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5363cda52b84124b2b93d22d34fc8ebf6302bdae
third_party_mesa3d/src/gallium/auxiliary/draw/draw_llvm.c
Dave Airlie 5363cda52b gallivm: add swizzle support where one channel isn't defined. 
NIR doesn't always define all output channels
relies on outputs being memset to 0

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
2019-11-28 14:49:16 +10:00

2691 lines
102 KiB
C
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/**************************************************************************
*
* Copyright 2010 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include "draw_llvm.h"
#include "draw_context.h"
#include "draw_vs.h"
#include "draw_gs.h"
#include "gallivm/lp_bld_arit.h"
#include "gallivm/lp_bld_arit_overflow.h"
#include "gallivm/lp_bld_bitarit.h"
#include "gallivm/lp_bld_gather.h"
#include "gallivm/lp_bld_logic.h"
#include "gallivm/lp_bld_const.h"
#include "gallivm/lp_bld_swizzle.h"
#include "gallivm/lp_bld_struct.h"
#include "gallivm/lp_bld_type.h"
#include "gallivm/lp_bld_flow.h"
#include "gallivm/lp_bld_debug.h"
#include "gallivm/lp_bld_tgsi.h"
#include "gallivm/lp_bld_nir.h"
#include "gallivm/lp_bld_printf.h"
#include "gallivm/lp_bld_intr.h"
#include "gallivm/lp_bld_init.h"
#include "gallivm/lp_bld_type.h"
#include "gallivm/lp_bld_pack.h"
#include "gallivm/lp_bld_format.h"
#include "tgsi/tgsi_exec.h"
#include "tgsi/tgsi_dump.h"
#include "util/u_math.h"
#include "util/u_pointer.h"
#include "util/u_string.h"
#include "util/simple_list.h"
#define DEBUG_STORE 0
static void
draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *var);
struct draw_gs_llvm_iface {
struct lp_build_gs_iface base;
struct draw_gs_llvm_variant *variant;
LLVMValueRef input;
};
static inline const struct draw_gs_llvm_iface *
draw_gs_llvm_iface(const struct lp_build_gs_iface *iface)
{
return (const struct draw_gs_llvm_iface *)iface;
}
/**
* Create LLVM type for draw_vertex_buffer.
*/
static LLVMTypeRef
create_jit_dvbuffer_type(struct gallivm_state *gallivm,
const char *struct_name)
{
LLVMTargetDataRef target = gallivm->target;
LLVMTypeRef dvbuffer_type;
LLVMTypeRef elem_types[DRAW_JIT_DVBUFFER_NUM_FIELDS];
LLVMTypeRef int32_type = LLVMInt32TypeInContext(gallivm->context);
elem_types[DRAW_JIT_DVBUFFER_MAP] =
LLVMPointerType(LLVMIntTypeInContext(gallivm->context, 8), 0);
elem_types[DRAW_JIT_DVBUFFER_SIZE] = int32_type;
dvbuffer_type = LLVMStructTypeInContext(gallivm->context, elem_types,
ARRAY_SIZE(elem_types), 0);
(void) target; /* silence unused var warning for non-debug build */
LP_CHECK_MEMBER_OFFSET(struct draw_vertex_buffer, map,
target, dvbuffer_type,
DRAW_JIT_DVBUFFER_MAP);
LP_CHECK_MEMBER_OFFSET(struct draw_vertex_buffer, size,
target, dvbuffer_type,
DRAW_JIT_DVBUFFER_SIZE);
return dvbuffer_type;
}
/**
* Create LLVM type for struct draw_jit_texture
*/
static LLVMTypeRef
create_jit_texture_type(struct gallivm_state *gallivm, const char *struct_name)
{
LLVMTargetDataRef target = gallivm->target;
LLVMTypeRef texture_type;
LLVMTypeRef elem_types[DRAW_JIT_TEXTURE_NUM_FIELDS];
LLVMTypeRef int32_type = LLVMInt32TypeInContext(gallivm->context);
elem_types[DRAW_JIT_TEXTURE_WIDTH] =
elem_types[DRAW_JIT_TEXTURE_HEIGHT] =
elem_types[DRAW_JIT_TEXTURE_DEPTH] =
elem_types[DRAW_JIT_TEXTURE_FIRST_LEVEL] =
elem_types[DRAW_JIT_TEXTURE_LAST_LEVEL] = int32_type;
elem_types[DRAW_JIT_TEXTURE_BASE] =
LLVMPointerType(LLVMInt8TypeInContext(gallivm->context), 0);
elem_types[DRAW_JIT_TEXTURE_ROW_STRIDE] =
elem_types[DRAW_JIT_TEXTURE_IMG_STRIDE] =
elem_types[DRAW_JIT_TEXTURE_MIP_OFFSETS] =
LLVMArrayType(int32_type, PIPE_MAX_TEXTURE_LEVELS);
texture_type = LLVMStructTypeInContext(gallivm->context, elem_types,
ARRAY_SIZE(elem_types), 0);
(void) target; /* silence unused var warning for non-debug build */
LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, width,
target, texture_type,
DRAW_JIT_TEXTURE_WIDTH);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, height,
target, texture_type,
DRAW_JIT_TEXTURE_HEIGHT);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, depth,
target, texture_type,
DRAW_JIT_TEXTURE_DEPTH);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, base,
target, texture_type,
DRAW_JIT_TEXTURE_BASE);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, row_stride,
target, texture_type,
DRAW_JIT_TEXTURE_ROW_STRIDE);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, img_stride,
target, texture_type,
DRAW_JIT_TEXTURE_IMG_STRIDE);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, first_level,
target, texture_type,
DRAW_JIT_TEXTURE_FIRST_LEVEL);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, last_level,
target, texture_type,
DRAW_JIT_TEXTURE_LAST_LEVEL);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_texture, mip_offsets,
target, texture_type,
DRAW_JIT_TEXTURE_MIP_OFFSETS);
LP_CHECK_STRUCT_SIZE(struct draw_jit_texture, target, texture_type);
return texture_type;
}
/**
* Create LLVM type for struct draw_jit_sampler
*/
static LLVMTypeRef
create_jit_sampler_type(struct gallivm_state *gallivm, const char *struct_name)
{
LLVMTargetDataRef target = gallivm->target;
LLVMTypeRef sampler_type;
LLVMTypeRef elem_types[DRAW_JIT_SAMPLER_NUM_FIELDS];
elem_types[DRAW_JIT_SAMPLER_MIN_LOD] =
elem_types[DRAW_JIT_SAMPLER_MAX_LOD] =
elem_types[DRAW_JIT_SAMPLER_LOD_BIAS] = LLVMFloatTypeInContext(gallivm->context);
elem_types[DRAW_JIT_SAMPLER_BORDER_COLOR] =
LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
sampler_type = LLVMStructTypeInContext(gallivm->context, elem_types,
ARRAY_SIZE(elem_types), 0);
(void) target; /* silence unused var warning for non-debug build */
LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, min_lod,
target, sampler_type,
DRAW_JIT_SAMPLER_MIN_LOD);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, max_lod,
target, sampler_type,
DRAW_JIT_SAMPLER_MAX_LOD);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, lod_bias,
target, sampler_type,
DRAW_JIT_SAMPLER_LOD_BIAS);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_sampler, border_color,
target, sampler_type,
DRAW_JIT_SAMPLER_BORDER_COLOR);
LP_CHECK_STRUCT_SIZE(struct draw_jit_sampler, target, sampler_type);
return sampler_type;
}
/**
* Create LLVM type for struct draw_jit_texture
*/
static LLVMTypeRef
create_jit_image_type(struct gallivm_state *gallivm, const char *struct_name)
{
LLVMTargetDataRef target = gallivm->target;
LLVMTypeRef image_type;
LLVMTypeRef elem_types[DRAW_JIT_IMAGE_NUM_FIELDS];
LLVMTypeRef int32_type = LLVMInt32TypeInContext(gallivm->context);
elem_types[DRAW_JIT_IMAGE_WIDTH] =
elem_types[DRAW_JIT_IMAGE_HEIGHT] =
elem_types[DRAW_JIT_IMAGE_DEPTH] =
elem_types[DRAW_JIT_IMAGE_ROW_STRIDE] =
elem_types[DRAW_JIT_IMAGE_IMG_STRIDE] = int32_type;
elem_types[DRAW_JIT_IMAGE_BASE] =
LLVMPointerType(LLVMInt8TypeInContext(gallivm->context), 0);
image_type = LLVMStructTypeInContext(gallivm->context, elem_types,
ARRAY_SIZE(elem_types), 0);
(void) target; /* silence unused var warning for non-debug build */
LP_CHECK_MEMBER_OFFSET(struct draw_jit_image, width,
target, image_type,
DRAW_JIT_IMAGE_WIDTH);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_image, height,
target, image_type,
DRAW_JIT_IMAGE_HEIGHT);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_image, depth,
target, image_type,
DRAW_JIT_IMAGE_DEPTH);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_image, base,
target, image_type,
DRAW_JIT_IMAGE_BASE);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_image, row_stride,
target, image_type,
DRAW_JIT_IMAGE_ROW_STRIDE);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_image, img_stride,
target, image_type,
DRAW_JIT_IMAGE_IMG_STRIDE);
LP_CHECK_STRUCT_SIZE(struct draw_jit_image, target, image_type);
return image_type;
}
/**
* Create LLVM type for struct draw_jit_context
*/
static LLVMTypeRef
create_jit_context_type(struct gallivm_state *gallivm,
LLVMTypeRef texture_type, LLVMTypeRef sampler_type,
LLVMTypeRef image_type,
const char *struct_name)
{
LLVMTargetDataRef target = gallivm->target;
LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context);
LLVMTypeRef int_type = LLVMInt32TypeInContext(gallivm->context);
LLVMTypeRef elem_types[DRAW_JIT_CTX_NUM_FIELDS];
LLVMTypeRef context_type;
elem_types[0] = LLVMArrayType(LLVMPointerType(float_type, 0), /* vs_constants */
LP_MAX_TGSI_CONST_BUFFERS);
elem_types[1] = LLVMArrayType(int_type, /* num_vs_constants */
LP_MAX_TGSI_CONST_BUFFERS);
elem_types[2] = LLVMPointerType(LLVMArrayType(LLVMArrayType(float_type, 4),
DRAW_TOTAL_CLIP_PLANES), 0);
elem_types[3] = LLVMPointerType(float_type, 0); /* viewports */
elem_types[4] = LLVMArrayType(texture_type,
PIPE_MAX_SHADER_SAMPLER_VIEWS); /* textures */
elem_types[5] = LLVMArrayType(sampler_type,
PIPE_MAX_SAMPLERS); /* samplers */
elem_types[6] = LLVMArrayType(image_type,
PIPE_MAX_SHADER_IMAGES); /* images */
elem_types[7] = LLVMArrayType(LLVMPointerType(int_type, 0), /* vs_ssbo */
LP_MAX_TGSI_SHADER_BUFFERS);
elem_types[8] = LLVMArrayType(int_type, /* num_vs_ssbos */
LP_MAX_TGSI_SHADER_BUFFERS);
context_type = LLVMStructTypeInContext(gallivm->context, elem_types,
ARRAY_SIZE(elem_types), 0);
(void) target; /* silence unused var warning for non-debug build */
LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, vs_constants,
target, context_type, DRAW_JIT_CTX_CONSTANTS);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, num_vs_constants,
target, context_type, DRAW_JIT_CTX_NUM_CONSTANTS);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, planes,
target, context_type, DRAW_JIT_CTX_PLANES);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, viewports,
target, context_type, DRAW_JIT_CTX_VIEWPORT);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, textures,
target, context_type,
DRAW_JIT_CTX_TEXTURES);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, samplers,
target, context_type,
DRAW_JIT_CTX_SAMPLERS);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, images,
target, context_type, DRAW_JIT_CTX_IMAGES);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, vs_ssbos,
target, context_type, DRAW_JIT_CTX_SSBOS);
LP_CHECK_MEMBER_OFFSET(struct draw_jit_context, num_vs_ssbos,
target, context_type, DRAW_JIT_CTX_NUM_SSBOS);
LP_CHECK_STRUCT_SIZE(struct draw_jit_context,
target, context_type);
return context_type;
}
/**
* Create LLVM type for struct draw_gs_jit_context
*/
static LLVMTypeRef
create_gs_jit_context_type(struct gallivm_state *gallivm,
unsigned vector_length,
LLVMTypeRef texture_type, LLVMTypeRef sampler_type,
LLVMTypeRef image_type,
const char *struct_name)
{
LLVMTargetDataRef target = gallivm->target;
LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context);
LLVMTypeRef int_type = LLVMInt32TypeInContext(gallivm->context);
LLVMTypeRef elem_types[DRAW_GS_JIT_CTX_NUM_FIELDS];
LLVMTypeRef context_type;
elem_types[0] = LLVMArrayType(LLVMPointerType(float_type, 0), /* constants */
LP_MAX_TGSI_CONST_BUFFERS);
elem_types[1] = LLVMArrayType(int_type, /* num_constants */
LP_MAX_TGSI_CONST_BUFFERS);
elem_types[2] = LLVMPointerType(LLVMArrayType(LLVMArrayType(float_type, 4),
DRAW_TOTAL_CLIP_PLANES), 0);
elem_types[3] = LLVMPointerType(float_type, 0); /* viewports */
elem_types[4] = LLVMArrayType(texture_type,
PIPE_MAX_SHADER_SAMPLER_VIEWS); /* textures */
elem_types[5] = LLVMArrayType(sampler_type,
PIPE_MAX_SAMPLERS); /* samplers */
elem_types[6] = LLVMArrayType(image_type,
PIPE_MAX_SHADER_IMAGES); /* images */
elem_types[7] = LLVMPointerType(LLVMPointerType(int_type, 0), 0);
elem_types[8] = LLVMPointerType(LLVMVectorType(int_type,
vector_length), 0);
elem_types[9] = LLVMPointerType(LLVMVectorType(int_type,
vector_length), 0);
elem_types[10] = LLVMArrayType(LLVMPointerType(int_type, 0), /* ssbos */
LP_MAX_TGSI_SHADER_BUFFERS);
elem_types[11] = LLVMArrayType(int_type, /* num_ssbos */
LP_MAX_TGSI_SHADER_BUFFERS);
context_type = LLVMStructTypeInContext(gallivm->context, elem_types,
ARRAY_SIZE(elem_types), 0);
(void) target; /* silence unused var warning for non-debug build */
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, constants,
target, context_type, DRAW_GS_JIT_CTX_CONSTANTS);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, num_constants,
target, context_type, DRAW_GS_JIT_CTX_NUM_CONSTANTS);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, planes,
target, context_type, DRAW_GS_JIT_CTX_PLANES);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, viewports,
target, context_type, DRAW_GS_JIT_CTX_VIEWPORT);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, textures,
target, context_type,
DRAW_GS_JIT_CTX_TEXTURES);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, samplers,
target, context_type,
DRAW_GS_JIT_CTX_SAMPLERS);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, prim_lengths,
target, context_type,
DRAW_GS_JIT_CTX_PRIM_LENGTHS);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, emitted_vertices,
target, context_type,
DRAW_GS_JIT_CTX_EMITTED_VERTICES);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, emitted_prims,
target, context_type,
DRAW_GS_JIT_CTX_EMITTED_PRIMS);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, ssbos,
target, context_type, DRAW_GS_JIT_CTX_SSBOS);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, num_ssbos,
target, context_type, DRAW_GS_JIT_CTX_NUM_SSBOS);
LP_CHECK_MEMBER_OFFSET(struct draw_gs_jit_context, images,
target, context_type, DRAW_GS_JIT_CTX_IMAGES);
LP_CHECK_STRUCT_SIZE(struct draw_gs_jit_context,
target, context_type);
return context_type;
}
static LLVMTypeRef
create_gs_jit_input_type(struct gallivm_state *gallivm)
{
LLVMTypeRef float_type = LLVMFloatTypeInContext(gallivm->context);
LLVMTypeRef input_array;
input_array = LLVMVectorType(float_type, TGSI_NUM_CHANNELS); /* num primitives */
input_array = LLVMArrayType(input_array, TGSI_NUM_CHANNELS); /* num channels */
input_array = LLVMArrayType(input_array, PIPE_MAX_SHADER_INPUTS); /* num attrs per vertex */
input_array = LLVMPointerType(input_array, 0); /* num vertices per prim */
return input_array;
}
/**
* Create LLVM type for struct pipe_vertex_buffer
*/
static LLVMTypeRef
create_jit_vertex_buffer_type(struct gallivm_state *gallivm,
const char *struct_name)
{
LLVMTargetDataRef target = gallivm->target;
LLVMTypeRef elem_types[4];
LLVMTypeRef vb_type;
elem_types[0] = LLVMInt16TypeInContext(gallivm->context);
elem_types[1] = LLVMInt8TypeInContext(gallivm->context);
elem_types[2] = LLVMInt32TypeInContext(gallivm->context);
elem_types[3] = LLVMPointerType(LLVMInt8TypeInContext(gallivm->context), 0);
vb_type = LLVMStructTypeInContext(gallivm->context, elem_types,
ARRAY_SIZE(elem_types), 0);
(void) target; /* silence unused var warning for non-debug build */
LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, stride,
target, vb_type, 0);
LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, is_user_buffer,
target, vb_type, 1);
LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, buffer_offset,
target, vb_type, 2);
LP_CHECK_MEMBER_OFFSET(struct pipe_vertex_buffer, buffer.resource,
target, vb_type, 3);
LP_CHECK_STRUCT_SIZE(struct pipe_vertex_buffer, target, vb_type);
return vb_type;
}
/**
* Create LLVM type for struct vertex_header;
*/
static LLVMTypeRef
create_jit_vertex_header(struct gallivm_state *gallivm, int data_elems)
{
LLVMTargetDataRef target = gallivm->target;
LLVMTypeRef elem_types[3];
LLVMTypeRef vertex_header;
char struct_name[24];
snprintf(struct_name, 23, "vertex_header%d", data_elems);
elem_types[DRAW_JIT_VERTEX_VERTEX_ID] = LLVMIntTypeInContext(gallivm->context, 32);
elem_types[DRAW_JIT_VERTEX_CLIP_POS] = LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
elem_types[DRAW_JIT_VERTEX_DATA] = LLVMArrayType(elem_types[1], data_elems);
vertex_header = LLVMStructTypeInContext(gallivm->context, elem_types,
ARRAY_SIZE(elem_types), 0);
/* these are bit-fields and we can't take address of them
LP_CHECK_MEMBER_OFFSET(struct vertex_header, clipmask,
target, vertex_header,
DRAW_JIT_VERTEX_CLIPMASK);
LP_CHECK_MEMBER_OFFSET(struct vertex_header, edgeflag,
target, vertex_header,
DRAW_JIT_VERTEX_EDGEFLAG);
LP_CHECK_MEMBER_OFFSET(struct vertex_header, pad,
target, vertex_header,
DRAW_JIT_VERTEX_PAD);
LP_CHECK_MEMBER_OFFSET(struct vertex_header, vertex_id,
target, vertex_header,
DRAW_JIT_VERTEX_VERTEX_ID);
*/
(void) target; /* silence unused var warning for non-debug build */
LP_CHECK_MEMBER_OFFSET(struct vertex_header, clip_pos,
target, vertex_header,
DRAW_JIT_VERTEX_CLIP_POS);
LP_CHECK_MEMBER_OFFSET(struct vertex_header, data,
target, vertex_header,
DRAW_JIT_VERTEX_DATA);
assert(LLVMABISizeOfType(target, vertex_header) ==
offsetof(struct vertex_header, data[data_elems]));
return vertex_header;
}
/**
* Create LLVM types for various structures.
*/
static void
create_jit_types(struct draw_llvm_variant *variant)
{
struct gallivm_state *gallivm = variant->gallivm;
LLVMTypeRef texture_type, sampler_type, context_type, buffer_type,
vb_type, image_type;
texture_type = create_jit_texture_type(gallivm, "texture");
sampler_type = create_jit_sampler_type(gallivm, "sampler");
image_type = create_jit_image_type(gallivm, "image");
context_type = create_jit_context_type(gallivm, texture_type, sampler_type,
image_type,
"draw_jit_context");
variant->context_ptr_type = LLVMPointerType(context_type, 0);
buffer_type = create_jit_dvbuffer_type(gallivm, "draw_vertex_buffer");
variant->buffer_ptr_type = LLVMPointerType(buffer_type, 0);
vb_type = create_jit_vertex_buffer_type(gallivm, "pipe_vertex_buffer");
variant->vb_ptr_type = LLVMPointerType(vb_type, 0);
}
static LLVMTypeRef
get_context_ptr_type(struct draw_llvm_variant *variant)
{
if (!variant->context_ptr_type)
create_jit_types(variant);
return variant->context_ptr_type;
}
static LLVMTypeRef
get_buffer_ptr_type(struct draw_llvm_variant *variant)
{
if (!variant->buffer_ptr_type)
create_jit_types(variant);
return variant->buffer_ptr_type;
}
static LLVMTypeRef
get_vb_ptr_type(struct draw_llvm_variant *variant)
{
if (!variant->vb_ptr_type)
create_jit_types(variant);
return variant->vb_ptr_type;
}
static LLVMTypeRef
get_vertex_header_ptr_type(struct draw_llvm_variant *variant)
{
if (!variant->vertex_header_ptr_type)
create_jit_types(variant);
return variant->vertex_header_ptr_type;
}
/**
* Create per-context LLVM info.
*/
struct draw_llvm *
draw_llvm_create(struct draw_context *draw, LLVMContextRef context)
{
struct draw_llvm *llvm;
if (!lp_build_init())
return NULL;
llvm = CALLOC_STRUCT( draw_llvm );
if (!llvm)
return NULL;
llvm->draw = draw;
llvm->context = context;
if (!llvm->context) {
llvm->context = LLVMContextCreate();
llvm->context_owned = true;
}
if (!llvm->context)
goto fail;
llvm->nr_variants = 0;
make_empty_list(&llvm->vs_variants_list);
llvm->nr_gs_variants = 0;
make_empty_list(&llvm->gs_variants_list);
return llvm;
fail:
draw_llvm_destroy(llvm);
return NULL;
}
/**
* Free per-context LLVM info.
*/
void
draw_llvm_destroy(struct draw_llvm *llvm)
{
if (llvm->context_owned)
LLVMContextDispose(llvm->context);
llvm->context = NULL;
/* XXX free other draw_llvm data? */
FREE(llvm);
}
/**
* Create LLVM-generated code for a vertex shader.
*/
struct draw_llvm_variant *
draw_llvm_create_variant(struct draw_llvm *llvm,
unsigned num_inputs,
const struct draw_llvm_variant_key *key)
{
struct draw_llvm_variant *variant;
struct llvm_vertex_shader *shader =
llvm_vertex_shader(llvm->draw->vs.vertex_shader);
LLVMTypeRef vertex_header;
char module_name[64];
variant = MALLOC(sizeof *variant +
shader->variant_key_size -
sizeof variant->key);
if (!variant)
return NULL;
variant->llvm = llvm;
variant->shader = shader;
snprintf(module_name, sizeof(module_name), "draw_llvm_vs_variant%u",
variant->shader->variants_cached);
variant->gallivm = gallivm_create(module_name, llvm->context);
create_jit_types(variant);
memcpy(&variant->key, key, shader->variant_key_size);
if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
if (llvm->draw->vs.vertex_shader->state.type == PIPE_SHADER_IR_TGSI)
tgsi_dump(llvm->draw->vs.vertex_shader->state.tokens, 0);
else
nir_print_shader(llvm->draw->vs.vertex_shader->state.ir.nir, stderr);
draw_llvm_dump_variant_key(&variant->key);
}
vertex_header = create_jit_vertex_header(variant->gallivm, num_inputs);
variant->vertex_header_ptr_type = LLVMPointerType(vertex_header, 0);
draw_llvm_generate(llvm, variant);
gallivm_compile_module(variant->gallivm);
variant->jit_func = (draw_jit_vert_func)
gallivm_jit_function(variant->gallivm, variant->function);
gallivm_free_ir(variant->gallivm);
variant->list_item_global.base = variant;
variant->list_item_local.base = variant;
/*variant->no = */shader->variants_created++;
variant->list_item_global.base = variant;
return variant;
}
static void
generate_vs(struct draw_llvm_variant *variant,
LLVMBuilderRef builder,
struct lp_type vs_type,
LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
const LLVMValueRef (*inputs)[TGSI_NUM_CHANNELS],
const struct lp_bld_tgsi_system_values *system_values,
LLVMValueRef context_ptr,
const struct lp_build_sampler_soa *draw_sampler,
const struct lp_build_image_soa *draw_image,
boolean clamp_vertex_color,
struct lp_build_mask_context *bld_mask)
{
struct draw_llvm *llvm = variant->llvm;
const struct tgsi_token *tokens = llvm->draw->vs.vertex_shader->state.tokens;
LLVMValueRef consts_ptr =
draw_jit_context_vs_constants(variant->gallivm, context_ptr);
LLVMValueRef num_consts_ptr =
draw_jit_context_num_vs_constants(variant->gallivm, context_ptr);
LLVMValueRef ssbos_ptr =
draw_jit_context_vs_ssbos(variant->gallivm, context_ptr);
LLVMValueRef num_ssbos_ptr =
draw_jit_context_num_vs_ssbos(variant->gallivm, context_ptr);
struct lp_build_tgsi_params params;
memset(&params, 0, sizeof(params));
params.type = vs_type;
params.mask = bld_mask;
params.consts_ptr = consts_ptr;
params.const_sizes_ptr = num_consts_ptr;
params.system_values = system_values;
params.inputs = inputs;
params.context_ptr = context_ptr;
params.sampler = draw_sampler;
params.info = &llvm->draw->vs.vertex_shader->info;
params.ssbo_ptr = ssbos_ptr;
params.ssbo_sizes_ptr = num_ssbos_ptr;
params.image = draw_image;
if (llvm->draw->vs.vertex_shader->state.ir.nir &&
llvm->draw->vs.vertex_shader->state.type == PIPE_SHADER_IR_NIR)
lp_build_nir_soa(variant->gallivm,
llvm->draw->vs.vertex_shader->state.ir.nir,
&params,
outputs);
else
lp_build_tgsi_soa(variant->gallivm,
tokens,
&params,
outputs);
{
LLVMValueRef out;
unsigned chan, attrib;
struct lp_build_context bld;
struct tgsi_shader_info* info = &llvm->draw->vs.vertex_shader->info;
lp_build_context_init(&bld, variant->gallivm, vs_type);
for (attrib = 0; attrib < info->num_outputs; ++attrib) {
for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) {
if (outputs[attrib][chan]) {
switch (info->output_semantic_name[attrib]) {
case TGSI_SEMANTIC_COLOR:
case TGSI_SEMANTIC_BCOLOR:
if (clamp_vertex_color) {
out = LLVMBuildLoad(builder, outputs[attrib][chan], "");
out = lp_build_clamp(&bld, out, bld.zero, bld.one);
LLVMBuildStore(builder, out, outputs[attrib][chan]);
}
break;
}
}
}
}
}
}
static void
fetch_instanced(struct gallivm_state *gallivm,
const struct util_format_description *format_desc,
struct lp_type vs_type,
LLVMValueRef vb_stride,
LLVMValueRef map_ptr,
LLVMValueRef buffer_size_adj,
LLVMValueRef *inputs,
LLVMValueRef index)
{
LLVMTypeRef i32_t = LLVMInt32TypeInContext(gallivm->context);
LLVMTypeRef aosf_t, aosi_t;
LLVMValueRef zero = LLVMConstNull(i32_t);
LLVMBuilderRef builder = gallivm->builder;
LLVMValueRef stride, buffer_overflowed, aos, index_valid;
unsigned i;
aosf_t = lp_build_vec_type(gallivm, lp_float32_vec4_type());
aosi_t = lp_build_vec_type(gallivm, lp_int32_vec4_type());
/* This mul can overflow. Wraparound is ok. */
stride = LLVMBuildMul(builder, vb_stride, index, "");
buffer_overflowed = LLVMBuildICmp(builder, LLVMIntUGE,
stride, buffer_size_adj,
"buffer_overflowed");
if (0) {
lp_build_print_value(gallivm, " instance index = ", index);
lp_build_print_value(gallivm, " buffer overflowed = ", buffer_overflowed);
}
index_valid = LLVMBuildNot(builder, buffer_overflowed, "");
index_valid = LLVMBuildSExt(builder, index_valid, i32_t, "");
stride = LLVMBuildAnd(builder, stride, index_valid, "");
aos = lp_build_fetch_rgba_aos(gallivm,
format_desc,
lp_float32_vec4_type(),
FALSE,
map_ptr,
stride, zero, zero,
NULL);
index_valid = lp_build_broadcast(gallivm, aosi_t, index_valid);
aos = LLVMBuildBitCast(builder, aos, aosi_t, "");
aos = LLVMBuildAnd(builder, aos, index_valid, "");
aos = LLVMBuildBitCast(builder, aos, aosf_t, "");
for (i = 0; i < TGSI_NUM_CHANNELS; i++) {
LLVMValueRef index = lp_build_const_int32(gallivm, i);
inputs[i] = lp_build_extract_broadcast(gallivm,
lp_float32_vec4_type(),
vs_type, aos, index);
}
}
static void
fetch_vector(struct gallivm_state *gallivm,
const struct util_format_description *format_desc,
struct lp_type vs_type,
LLVMValueRef vb_stride,
LLVMValueRef map_ptr,
LLVMValueRef buffer_size_adj,
LLVMValueRef *inputs,
LLVMValueRef indices)
{
LLVMBuilderRef builder = gallivm->builder;
struct lp_build_context blduivec;
struct lp_type fetch_type = vs_type;
LLVMValueRef offset, valid_mask;
unsigned i;
lp_build_context_init(&blduivec, gallivm, lp_uint_type(vs_type));
vb_stride = lp_build_broadcast_scalar(&blduivec, vb_stride);
buffer_size_adj = lp_build_broadcast_scalar(&blduivec, buffer_size_adj);
/* This mul can overflow. Wraparound is ok. */
offset = lp_build_mul(&blduivec, vb_stride, indices);
valid_mask = lp_build_compare(gallivm, blduivec.type,
PIPE_FUNC_LESS, offset, buffer_size_adj);
/* not valid elements use offset 0 */
offset = LLVMBuildAnd(builder, offset, valid_mask, "");
if (0) {
lp_build_print_value(gallivm, " indices = ", indices);
lp_build_print_value(gallivm, " offsets = ", offset);
lp_build_print_value(gallivm, " valid_mask = ", valid_mask);
}
/*
* Unlike fetch_instanced, use SoA fetch instead of multiple AoS fetches.
* This should always produce better code.
*/
/* The type handling is annoying here... */
if (format_desc->colorspace == UTIL_FORMAT_COLORSPACE_RGB &&
format_desc->channel[0].pure_integer) {
if (format_desc->channel[0].type == UTIL_FORMAT_TYPE_SIGNED) {
fetch_type = lp_type_int_vec(vs_type.width, vs_type.width * vs_type.length);
}
else if (format_desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED) {
fetch_type = lp_type_uint_vec(vs_type.width, vs_type.width * vs_type.length);
}
}
lp_build_fetch_rgba_soa(gallivm, format_desc,
fetch_type, FALSE, map_ptr, offset,
blduivec.zero, blduivec.zero,
NULL, inputs);
for (i = 0; i < TGSI_NUM_CHANNELS; i++) {
inputs[i] = LLVMBuildBitCast(builder, inputs[i],
lp_build_vec_type(gallivm, vs_type), "");
}
/* out-of-bound fetches return all zeros */
for (i = 0; i < TGSI_NUM_CHANNELS; i++) {
inputs[i] = LLVMBuildBitCast(builder, inputs[i], blduivec.vec_type, "");
inputs[i] = LLVMBuildAnd(builder, inputs[i], valid_mask, "");
inputs[i] = LLVMBuildBitCast(builder, inputs[i],
lp_build_vec_type(gallivm, vs_type), "");
}
}
static void
store_aos(struct gallivm_state *gallivm,
LLVMValueRef io_ptr,
LLVMValueRef index,
LLVMValueRef value)
{
LLVMTypeRef data_ptr_type = LLVMPointerType(lp_build_vec_type(gallivm, lp_float32_vec4_type()), 0);
LLVMBuilderRef builder = gallivm->builder;
LLVMValueRef data_ptr = draw_jit_header_data(gallivm, io_ptr);
LLVMValueRef indices[3];
indices[0] = lp_build_const_int32(gallivm, 0);
indices[1] = index;
indices[2] = lp_build_const_int32(gallivm, 0);
data_ptr = LLVMBuildGEP(builder, data_ptr, indices, 3, "");
data_ptr = LLVMBuildPointerCast(builder, data_ptr, data_ptr_type, "");
#if DEBUG_STORE
lp_build_printf(gallivm, " ---- %p storing attribute %d (io = %p)\n", data_ptr, index, io_ptr);
#endif
/* Unaligned store due to the vertex header */
LLVMSetAlignment(LLVMBuildStore(builder, value, data_ptr), sizeof(float));
}
/**
* Adjust the mask to architecture endianess. The mask will the store in struct:
*
* struct vertex_header {
* unsigned clipmask:DRAW_TOTAL_CLIP_PLANES;
* unsigned edgeflag:1;
* unsigned pad:1;
* unsigned vertex_id:16;
* [...]
* }
*
* On little-endian machine nothing needs to done, however on bit-endian machine
* the mask's fields need to be adjusted with the algorithm:
*
* uint32_t reverse (uint32_t x)
* {
* return (x >> 16) | // vertex_id
* ((x & 0x3fff) << 18) | // clipmask
* ((x & 0x4000) << 3) | // pad
* ((x & 0x8000) << 1); // edgeflag
* }
*/
static LLVMValueRef
adjust_mask(struct gallivm_state *gallivm,
LLVMValueRef mask)
{
#if UTIL_ARCH_BIG_ENDIAN
LLVMBuilderRef builder = gallivm->builder;
LLVMValueRef vertex_id;
LLVMValueRef clipmask;
LLVMValueRef pad;
LLVMValueRef edgeflag;
vertex_id = LLVMBuildLShr(builder, mask, lp_build_const_int32(gallivm, 16), "");
clipmask = LLVMBuildAnd(builder, mask, lp_build_const_int32(gallivm, 0x3fff), "");
clipmask = LLVMBuildShl(builder, clipmask, lp_build_const_int32(gallivm, 18), "");
if (0) {
pad = LLVMBuildAnd(builder, mask, lp_build_const_int32(gallivm, 0x4000), "");
pad = LLVMBuildShl(builder, pad, lp_build_const_int32(gallivm, 3), "");
}
edgeflag = LLVMBuildAnd(builder, mask, lp_build_const_int32(gallivm, 0x8000), "");
edgeflag = LLVMBuildShl(builder, edgeflag, lp_build_const_int32(gallivm, 1), "");
mask = LLVMBuildOr(builder, vertex_id, clipmask, "");
if (0) {
mask = LLVMBuildOr(builder, mask, pad, "");
}
mask = LLVMBuildOr(builder, mask, edgeflag, "");
#endif
return mask;
}
static void
store_aos_array(struct gallivm_state *gallivm,
struct lp_type soa_type,
LLVMValueRef io_ptr,
LLVMValueRef *indices,
LLVMValueRef* aos,
int attrib,
int num_outputs,
LLVMValueRef clipmask,
boolean need_edgeflag)
{
LLVMBuilderRef builder = gallivm->builder;
LLVMValueRef attr_index = lp_build_const_int32(gallivm, attrib);
LLVMValueRef inds[LP_MAX_VECTOR_WIDTH / 32];
LLVMValueRef linear_inds[LP_MAX_VECTOR_WIDTH / 32];
LLVMValueRef io_ptrs[LP_MAX_VECTOR_WIDTH / 32];
int vector_length = soa_type.length;
int i;
debug_assert(TGSI_NUM_CHANNELS == 4);
for (i = 0; i < vector_length; i++) {
linear_inds[i] = lp_build_const_int32(gallivm, i);
if (indices) {
inds[i] = indices[i];
} else {
inds[i] = linear_inds[i];
}
io_ptrs[i] = LLVMBuildGEP(builder, io_ptr, &inds[i], 1, "");
}
if (attrib == 0) {
/* store vertex header for each of the n vertices */
LLVMValueRef val, cliptmp;
int vertex_id_pad_edgeflag;
/* If this assertion fails, it means we need to update the bit twidding
* code here. See struct vertex_header in draw_private.h.
*/
assert(DRAW_TOTAL_CLIP_PLANES==14);
/* initialize vertex id:16 = 0xffff, pad:1 = 0, edgeflag:1 = 1 */
if (!need_edgeflag) {
vertex_id_pad_edgeflag = (0xffff << 16) | (1 << DRAW_TOTAL_CLIP_PLANES);
}
else {
vertex_id_pad_edgeflag = (0xffff << 16);
}
val = lp_build_const_int_vec(gallivm, lp_int_type(soa_type),
vertex_id_pad_edgeflag);
/* OR with the clipmask */
cliptmp = LLVMBuildOr(builder, val, clipmask, "");
for (i = 0; i < vector_length; i++) {
LLVMValueRef id_ptr = draw_jit_header_id(gallivm, io_ptrs[i]);
val = LLVMBuildExtractElement(builder, cliptmp, linear_inds[i], "");
val = adjust_mask(gallivm, val);
#if DEBUG_STORE
lp_build_printf(gallivm, "io = %p, index %d, clipmask = %x\n",
io_ptrs[i], inds[i], val);
#endif
LLVMBuildStore(builder, val, id_ptr);
}
}
/* store for each of the n vertices */
for (i = 0; i < vector_length; i++) {
store_aos(gallivm, io_ptrs[i], attr_index, aos[i]);
}
}
static void
convert_to_aos(struct gallivm_state *gallivm,
LLVMValueRef io,
LLVMValueRef *indices,
LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
LLVMValueRef clipmask,
int num_outputs,
struct lp_type soa_type,
boolean need_edgeflag)
{
LLVMBuilderRef builder = gallivm->builder;
unsigned chan, attrib, i;
#if DEBUG_STORE
lp_build_printf(gallivm, " # storing begin\n");
#endif
for (attrib = 0; attrib < num_outputs; ++attrib) {
LLVMValueRef soa[TGSI_NUM_CHANNELS];
LLVMValueRef aos[LP_MAX_VECTOR_WIDTH / 32];
for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) {
if (outputs[attrib][chan]) {
LLVMValueRef out = LLVMBuildLoad(builder, outputs[attrib][chan], "");
lp_build_name(out, "output%u.%c", attrib, "xyzw"[chan]);
#if DEBUG_STORE
lp_build_printf(gallivm, "output %d : %d ",
LLVMConstInt(LLVMInt32TypeInContext(gallivm->context),
attrib, 0),
LLVMConstInt(LLVMInt32TypeInContext(gallivm->context),
chan, 0));
lp_build_print_value(gallivm, "val = ", out);
{
LLVMValueRef iv =
LLVMBuildBitCast(builder, out, lp_build_int_vec_type(gallivm, soa_type), "");
lp_build_print_value(gallivm, " ival = ", iv);
}
#endif
soa[chan] = out;
}
else {
soa[chan] = 0;
}
}
if (soa_type.length == TGSI_NUM_CHANNELS) {
lp_build_transpose_aos(gallivm, soa_type, soa, aos);
} else {
lp_build_transpose_aos(gallivm, soa_type, soa, soa);
for (i = 0; i < soa_type.length; ++i) {
aos[i] = lp_build_extract_range(gallivm,
soa[i % TGSI_NUM_CHANNELS],
(i / TGSI_NUM_CHANNELS) * TGSI_NUM_CHANNELS,
TGSI_NUM_CHANNELS);
}
}
store_aos_array(gallivm,
soa_type,
io, indices,
aos,
attrib,
num_outputs,
clipmask,
need_edgeflag);
}
#if DEBUG_STORE
lp_build_printf(gallivm, " # storing end\n");
#endif
}
/**
* Stores original vertex positions in clip coordinates
*/
static void
store_clip(struct gallivm_state *gallivm,
const struct lp_type vs_type,
LLVMValueRef io_ptr,
LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
int idx)
{
LLVMBuilderRef builder = gallivm->builder;
LLVMValueRef soa[4];
LLVMValueRef aos[LP_MAX_VECTOR_LENGTH];
LLVMValueRef indices[2];
LLVMValueRef io_ptrs[LP_MAX_VECTOR_WIDTH / 32];
LLVMValueRef inds[LP_MAX_VECTOR_WIDTH / 32];
LLVMValueRef clip_ptrs[LP_MAX_VECTOR_WIDTH / 32];
LLVMTypeRef clip_ptr_type =
LLVMPointerType(LLVMVectorType(LLVMFloatTypeInContext(gallivm->context),
4), 0);
int i, j;
indices[0] =
indices[1] = lp_build_const_int32(gallivm, 0);
for (i = 0; i < vs_type.length; i++) {
inds[i] = lp_build_const_int32(gallivm, i);
io_ptrs[i] = LLVMBuildGEP(builder, io_ptr, &inds[i], 1, "");
}
soa[0] = LLVMBuildLoad(builder, outputs[idx][0], ""); /*x0 x1 .. xn*/
soa[1] = LLVMBuildLoad(builder, outputs[idx][1], ""); /*y0 y1 .. yn*/
soa[2] = LLVMBuildLoad(builder, outputs[idx][2], ""); /*z0 z1 .. zn*/
soa[3] = LLVMBuildLoad(builder, outputs[idx][3], ""); /*w0 w1 .. wn*/
for (i = 0; i < vs_type.length; i++) {
clip_ptrs[i] = draw_jit_header_clip_pos(gallivm, io_ptrs[i]);
}
lp_build_transpose_aos(gallivm, vs_type, soa, soa);
for (i = 0; i < vs_type.length; ++i) {
aos[i] = lp_build_extract_range(gallivm,
soa[i % TGSI_NUM_CHANNELS],
(i / TGSI_NUM_CHANNELS) * TGSI_NUM_CHANNELS,
TGSI_NUM_CHANNELS);
}
for (j = 0; j < vs_type.length; j++) {
LLVMValueRef clip_ptr;
clip_ptr = LLVMBuildGEP(builder, clip_ptrs[j], indices, 2, "clipo");
clip_ptr = LLVMBuildPointerCast(builder, clip_ptr, clip_ptr_type, "");
/* Unaligned store */
LLVMSetAlignment(LLVMBuildStore(builder, aos[j], clip_ptr), sizeof(float));
}
}
/**
* Transforms the outputs for viewport mapping
*/
static void
generate_viewport(struct draw_llvm_variant *variant,
LLVMBuilderRef builder,
struct lp_type vs_type,
LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
LLVMValueRef context_ptr)
{
int i;
struct gallivm_state *gallivm = variant->gallivm;
struct lp_type f32_type = vs_type;
const unsigned pos = variant->llvm->draw->vs.position_output;
LLVMTypeRef vs_type_llvm = lp_build_vec_type(gallivm, vs_type);
LLVMValueRef out3 = LLVMBuildLoad(builder, outputs[pos][3], ""); /*w0 w1 .. wn*/
LLVMValueRef const1 = lp_build_const_vec(gallivm, f32_type, 1.0); /*1.0 1.0 1.0 1.0*/
LLVMValueRef vp_ptr = draw_jit_context_viewports(gallivm, context_ptr);
/* We treat pipe_viewport_state as a float array */
const int scale_index_offset = offsetof(struct pipe_viewport_state, scale) / sizeof(float);
const int trans_index_offset = offsetof(struct pipe_viewport_state, translate) / sizeof(float);
/* for 1/w convention*/
out3 = LLVMBuildFDiv(builder, const1, out3, "");
LLVMBuildStore(builder, out3, outputs[pos][3]);
/* Viewport Mapping */
for (i=0; i<3; i++) {
LLVMValueRef out = LLVMBuildLoad(builder, outputs[pos][i], ""); /*x0 x1 .. xn*/
LLVMValueRef scale;
LLVMValueRef trans;
LLVMValueRef scale_i;
LLVMValueRef trans_i;
LLVMValueRef index;
index = lp_build_const_int32(gallivm, i + scale_index_offset);
scale_i = LLVMBuildGEP(builder, vp_ptr, &index, 1, "");
index = lp_build_const_int32(gallivm, i + trans_index_offset);
trans_i = LLVMBuildGEP(builder, vp_ptr, &index, 1, "");
scale = lp_build_broadcast(gallivm, vs_type_llvm,
LLVMBuildLoad(builder, scale_i, "scale"));
trans = lp_build_broadcast(gallivm, vs_type_llvm,
LLVMBuildLoad(builder, trans_i, "trans"));
/* divide by w */
out = LLVMBuildFMul(builder, out, out3, "");
/* mult by scale, add translation */
out = lp_build_fmuladd(builder, out, scale, trans);
/* store transformed outputs */
LLVMBuildStore(builder, out, outputs[pos][i]);
}
}
/**
* Returns clipmask as nxi32 bitmask for the n vertices
*/
static LLVMValueRef
generate_clipmask(struct draw_llvm *llvm,
struct gallivm_state *gallivm,
struct lp_type vs_type,
LLVMValueRef (*outputs)[TGSI_NUM_CHANNELS],
struct draw_llvm_variant_key *key,
LLVMValueRef context_ptr,
boolean *have_clipdist)
{
LLVMBuilderRef builder = gallivm->builder;
LLVMValueRef mask; /* stores the <nxi32> clipmasks */
LLVMValueRef test, temp;
LLVMValueRef zero, shift;
LLVMValueRef pos_x, pos_y, pos_z, pos_w;
LLVMValueRef cv_x, cv_y, cv_z, cv_w;
LLVMValueRef plane1, planes, plane_ptr, sum;
struct lp_type f32_type = vs_type;
struct lp_type i32_type = lp_int_type(vs_type);
const unsigned pos = llvm->draw->vs.position_output;
const unsigned cv = llvm->draw->vs.clipvertex_output;
int num_written_clipdistance = llvm->draw->vs.vertex_shader->info.num_written_clipdistance;
boolean have_cd = false;
boolean clip_user = key->clip_user;
unsigned ucp_enable = key->ucp_enable;
unsigned cd[2];
cd[0] = llvm->draw->vs.ccdistance_output[0];
cd[1] = llvm->draw->vs.ccdistance_output[1];
if (cd[0] != pos || cd[1] != pos)
have_cd = true;
if (num_written_clipdistance && !clip_user) {
clip_user = true;
ucp_enable = (1 << num_written_clipdistance) - 1;
}
mask = lp_build_const_int_vec(gallivm, i32_type, 0);
temp = lp_build_const_int_vec(gallivm, i32_type, 0);
zero = lp_build_const_vec(gallivm, f32_type, 0); /* 0.0f 0.0f 0.0f 0.0f */
shift = lp_build_const_int_vec(gallivm, i32_type, 1); /* 1 1 1 1 */
/*
* load clipvertex and position from correct locations.
* if they are the same just load them once.
*/
pos_x = LLVMBuildLoad(builder, outputs[pos][0], ""); /*x0 x1 .. xn */
pos_y = LLVMBuildLoad(builder, outputs[pos][1], ""); /*y0 y1 .. yn */
pos_z = LLVMBuildLoad(builder, outputs[pos][2], ""); /*z0 z1 .. zn */
pos_w = LLVMBuildLoad(builder, outputs[pos][3], ""); /*w0 w1 .. wn */
if (clip_user && cv != pos) {
cv_x = LLVMBuildLoad(builder, outputs[cv][0], ""); /*x0 x1 .. xn */
cv_y = LLVMBuildLoad(builder, outputs[cv][1], ""); /*y0 y1 .. yn */
cv_z = LLVMBuildLoad(builder, outputs[cv][2], ""); /*z0 z1 .. zn */
cv_w = LLVMBuildLoad(builder, outputs[cv][3], ""); /*w0 w1 .. wn */
} else {
cv_x = pos_x;
cv_y = pos_y;
cv_z = pos_z;
cv_w = pos_w;
}
/*
* Be careful with the comparisons and NaNs (using llvm's unordered
* comparisons here).
*/
/* Cliptest, for hardwired planes */
/*
* XXX should take guardband into account (currently not in key).
* Otherwise might run the draw pipeline stages for nothing.
*/
if (key->clip_xy) {
/* plane 1 */
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, pos_x , pos_w);
temp = shift;
test = LLVMBuildAnd(builder, test, temp, "");
mask = test;
/* plane 2 */
test = LLVMBuildFAdd(builder, pos_x, pos_w, "");
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, test);
temp = LLVMBuildShl(builder, temp, shift, "");
test = LLVMBuildAnd(builder, test, temp, "");
mask = LLVMBuildOr(builder, mask, test, "");
/* plane 3 */
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, pos_y, pos_w);
temp = LLVMBuildShl(builder, temp, shift, "");
test = LLVMBuildAnd(builder, test, temp, "");
mask = LLVMBuildOr(builder, mask, test, "");
/* plane 4 */
test = LLVMBuildFAdd(builder, pos_y, pos_w, "");
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, test);
temp = LLVMBuildShl(builder, temp, shift, "");
test = LLVMBuildAnd(builder, test, temp, "");
mask = LLVMBuildOr(builder, mask, test, "");
}
if (key->clip_z) {
temp = lp_build_const_int_vec(gallivm, i32_type, 16);
if (key->clip_halfz) {
/* plane 5 */
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, pos_z);
test = LLVMBuildAnd(builder, test, temp, "");
mask = LLVMBuildOr(builder, mask, test, "");
}
else {
/* plane 5 */
test = LLVMBuildFAdd(builder, pos_z, pos_w, "");
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, test);
test = LLVMBuildAnd(builder, test, temp, "");
mask = LLVMBuildOr(builder, mask, test, "");
}
/* plane 6 */
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, pos_z, pos_w);
temp = LLVMBuildShl(builder, temp, shift, "");
test = LLVMBuildAnd(builder, test, temp, "");
mask = LLVMBuildOr(builder, mask, test, "");
}
if (clip_user) {
LLVMValueRef planes_ptr = draw_jit_context_planes(gallivm, context_ptr);
LLVMValueRef indices[3];
LLVMValueRef is_nan_or_inf;
/* userclip planes */
while (ucp_enable) {
unsigned plane_idx = ffs(ucp_enable)-1;
ucp_enable &= ~(1 << plane_idx);
plane_idx += 6;
if (have_cd && num_written_clipdistance) {
LLVMValueRef clipdist;
int i;
i = plane_idx - 6;
*have_clipdist = TRUE;
if (i < 4) {
clipdist = LLVMBuildLoad(builder, outputs[cd[0]][i], "");
} else {
clipdist = LLVMBuildLoad(builder, outputs[cd[1]][i-4], "");
}
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, clipdist);
is_nan_or_inf = lp_build_is_inf_or_nan(gallivm, vs_type, clipdist);
test = LLVMBuildOr(builder, test, is_nan_or_inf, "");
temp = lp_build_const_int_vec(gallivm, i32_type, 1LL << plane_idx);
test = LLVMBuildAnd(builder, test, temp, "");
mask = LLVMBuildOr(builder, mask, test, "");
} else {
LLVMTypeRef vs_type_llvm = lp_build_vec_type(gallivm, vs_type);
indices[0] = lp_build_const_int32(gallivm, 0);
indices[1] = lp_build_const_int32(gallivm, plane_idx);
indices[2] = lp_build_const_int32(gallivm, 0);
plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_x");
planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
sum = LLVMBuildFMul(builder, planes, cv_x, "");
indices[2] = lp_build_const_int32(gallivm, 1);
plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_y");
planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
sum = lp_build_fmuladd(builder, planes, cv_y, sum);
indices[2] = lp_build_const_int32(gallivm, 2);
plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_z");
planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
sum = lp_build_fmuladd(builder, planes, cv_z, sum);
indices[2] = lp_build_const_int32(gallivm, 3);
plane_ptr = LLVMBuildGEP(builder, planes_ptr, indices, 3, "");
plane1 = LLVMBuildLoad(builder, plane_ptr, "plane_w");
planes = lp_build_broadcast(gallivm, vs_type_llvm, plane1);
sum = lp_build_fmuladd(builder, planes, cv_w, sum);
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_GREATER, zero, sum);
temp = lp_build_const_int_vec(gallivm, i32_type, 1LL << plane_idx);
test = LLVMBuildAnd(builder, test, temp, "");
mask = LLVMBuildOr(builder, mask, test, "");
}
}
}
if (key->need_edgeflags) {
/*
* This isn't really part of clipmask but stored the same in vertex
* header later, so do it here.
*/
unsigned edge_attr = llvm->draw->vs.edgeflag_output;
LLVMValueRef one = lp_build_const_vec(gallivm, f32_type, 1.0);
LLVMValueRef edgeflag = LLVMBuildLoad(builder, outputs[edge_attr][0], "");
test = lp_build_compare(gallivm, f32_type, PIPE_FUNC_EQUAL, one, edgeflag);
temp = lp_build_const_int_vec(gallivm, i32_type,
1LL << DRAW_TOTAL_CLIP_PLANES);
test = LLVMBuildAnd(builder, test, temp, "");
mask = LLVMBuildOr(builder, mask, test, "");
}
return mask;
}
/**
* Returns boolean if any clipping has occurred
* Used zero/one i8 value to represent boolean
*/
static LLVMValueRef
clipmask_booli8(struct gallivm_state *gallivm,
const struct lp_type vs_type,
LLVMValueRef clipmask_bool_ptr,
boolean edgeflag_in_clipmask)
{
LLVMBuilderRef builder = gallivm->builder;
LLVMTypeRef int8_type = LLVMInt8TypeInContext(gallivm->context);
LLVMValueRef clipmask_bool = LLVMBuildLoad(builder, clipmask_bool_ptr, "");
LLVMValueRef ret;
struct lp_build_context bldivec;
lp_build_context_init(&bldivec, gallivm, lp_int_type(vs_type));
/*
* We need to invert the edgeflag bit from the clipmask here
* (because the result is really if we want to run the pipeline or not
* and we (may) need it if edgeflag was 0).
*/
if (edgeflag_in_clipmask) {
LLVMValueRef edge = lp_build_const_int_vec(gallivm, bldivec.type,
1LL << DRAW_TOTAL_CLIP_PLANES);
clipmask_bool = LLVMBuildXor(builder, clipmask_bool, edge, "");
}
/*
* XXX: probably should mask off bits from the mask which come from
* vertices which were beyond the count (i.e. indices_valid for
* linear fetches, for elts ones we don't have the correct mask
* right now). Otherwise might run the pipeline for nothing,
* though everything should still work.
*/
ret = lp_build_any_true_range(&bldivec, vs_type.length, clipmask_bool);
ret = LLVMBuildZExt(builder, ret, int8_type, "");
return ret;
}
static LLVMValueRef
draw_gs_llvm_fetch_input(const struct lp_build_gs_iface *gs_iface,
struct lp_build_context * bld,
boolean is_vindex_indirect,
LLVMValueRef vertex_index,
boolean is_aindex_indirect,
LLVMValueRef attrib_index,
LLVMValueRef swizzle_index)
{
const struct draw_gs_llvm_iface *gs = draw_gs_llvm_iface(gs_iface);
struct gallivm_state *gallivm = bld->gallivm;
LLVMBuilderRef builder = gallivm->builder;
LLVMValueRef indices[3];
LLVMValueRef res;
struct lp_type type = bld->type;
if (is_vindex_indirect || is_aindex_indirect) {
int i;
res = bld->zero;
for (i = 0; i < type.length; ++i) {
LLVMValueRef idx = lp_build_const_int32(gallivm, i);
LLVMValueRef vert_chan_index = vertex_index;
LLVMValueRef attr_chan_index = attrib_index;
LLVMValueRef channel_vec, value;
if (is_vindex_indirect) {
vert_chan_index = LLVMBuildExtractElement(builder,
vertex_index, idx, "");
}
if (is_aindex_indirect) {
attr_chan_index = LLVMBuildExtractElement(builder,
attrib_index, idx, "");
}
indices[0] = vert_chan_index;
indices[1] = attr_chan_index;
indices[2] = swizzle_index;
channel_vec = LLVMBuildGEP(builder, gs->input, indices, 3, "");
channel_vec = LLVMBuildLoad(builder, channel_vec, "");
value = LLVMBuildExtractElement(builder, channel_vec, idx, "");
res = LLVMBuildInsertElement(builder, res, value, idx, "");
}
} else {
indices[0] = vertex_index;
indices[1] = attrib_index;
indices[2] = swizzle_index;
res = LLVMBuildGEP(builder, gs->input, indices, 3, "");
res = LLVMBuildLoad(builder, res, "");
}
return res;
}
static void
draw_gs_llvm_emit_vertex(const struct lp_build_gs_iface *gs_base,
struct lp_build_context * bld,
LLVMValueRef (*outputs)[4],
LLVMValueRef emitted_vertices_vec,
LLVMValueRef stream_id)
{
const struct draw_gs_llvm_iface *gs_iface = draw_gs_llvm_iface(gs_base);
struct draw_gs_llvm_variant *variant = gs_iface->variant;
struct gallivm_state *gallivm = variant->gallivm;
LLVMBuilderRef builder = gallivm->builder;
struct lp_type gs_type = bld->type;
LLVMValueRef clipmask = lp_build_const_int_vec(gallivm,
lp_int_type(gs_type), 0);
LLVMValueRef indices[LP_MAX_VECTOR_LENGTH];
LLVMValueRef next_prim_offset =
lp_build_const_int32(gallivm, variant->shader->base.primitive_boundary);
LLVMValueRef io = variant->io_ptr;
unsigned i;
const struct tgsi_shader_info *gs_info = &variant->shader->base.info;
for (i = 0; i < gs_type.length; ++i) {
LLVMValueRef ind = lp_build_const_int32(gallivm, i);
LLVMValueRef currently_emitted =
LLVMBuildExtractElement(builder, emitted_vertices_vec, ind, "");
indices[i] = LLVMBuildMul(builder, ind, next_prim_offset, "");
indices[i] = LLVMBuildAdd(builder, indices[i], currently_emitted, "");
}
convert_to_aos(gallivm, io, indices,
outputs, clipmask,
gs_info->num_outputs, gs_type,
FALSE);
}
static void
draw_gs_llvm_end_primitive(const struct lp_build_gs_iface *gs_base,
struct lp_build_context * bld,
LLVMValueRef total_emitted_vertices_vec_ptr,
LLVMValueRef verts_per_prim_vec,
LLVMValueRef emitted_prims_vec,
LLVMValueRef mask_vec)
{
const struct draw_gs_llvm_iface *gs_iface = draw_gs_llvm_iface(gs_base);
struct draw_gs_llvm_variant *variant = gs_iface->variant;
struct gallivm_state *gallivm = variant->gallivm;
LLVMBuilderRef builder = gallivm->builder;
LLVMValueRef prim_lengts_ptr =
draw_gs_jit_prim_lengths(variant->gallivm, variant->context_ptr);
unsigned i;
for (i = 0; i < bld->type.length; ++i) {
LLVMValueRef ind = lp_build_const_int32(gallivm, i);
LLVMValueRef prims_emitted =
LLVMBuildExtractElement(builder, emitted_prims_vec, ind, "");
LLVMValueRef store_ptr;
LLVMValueRef num_vertices =
LLVMBuildExtractElement(builder, verts_per_prim_vec, ind, "");
store_ptr = LLVMBuildGEP(builder, prim_lengts_ptr, &prims_emitted, 1, "");
store_ptr = LLVMBuildLoad(builder, store_ptr, "");
store_ptr = LLVMBuildGEP(builder, store_ptr, &ind, 1, "");
LLVMBuildStore(builder, num_vertices, store_ptr);
}
}
static void
draw_gs_llvm_epilogue(const struct lp_build_gs_iface *gs_base,
LLVMValueRef total_emitted_vertices_vec,
LLVMValueRef emitted_prims_vec)
{
const struct draw_gs_llvm_iface *gs_iface = draw_gs_llvm_iface(gs_base);
struct draw_gs_llvm_variant *variant = gs_iface->variant;
struct gallivm_state *gallivm = variant->gallivm;
LLVMBuilderRef builder = gallivm->builder;
LLVMValueRef emitted_verts_ptr =
draw_gs_jit_emitted_vertices(gallivm, variant->context_ptr);
LLVMValueRef emitted_prims_ptr =
draw_gs_jit_emitted_prims(gallivm, variant->context_ptr);
LLVMValueRef zero = lp_build_const_int32(gallivm, 0);
emitted_verts_ptr = LLVMBuildGEP(builder, emitted_verts_ptr, &zero, 0, "");
emitted_prims_ptr = LLVMBuildGEP(builder, emitted_prims_ptr, &zero, 0, "");
LLVMBuildStore(builder, total_emitted_vertices_vec, emitted_verts_ptr);
LLVMBuildStore(builder, emitted_prims_vec, emitted_prims_ptr);
}
static void
draw_llvm_generate(struct draw_llvm *llvm, struct draw_llvm_variant *variant)
{
struct gallivm_state *gallivm = variant->gallivm;
LLVMContextRef context = gallivm->context;
LLVMTypeRef int32_type = LLVMInt32TypeInContext(context);
LLVMTypeRef arg_types[11];
unsigned num_arg_types = ARRAY_SIZE(arg_types);
LLVMTypeRef func_type;
LLVMValueRef context_ptr;
LLVMBasicBlockRef block;
LLVMBuilderRef builder;
char func_name[64];
struct lp_type vs_type;
LLVMValueRef count, fetch_elts, start_or_maxelt;
LLVMValueRef vertex_id_offset, start_instance;
LLVMValueRef stride, step, io_itr;
LLVMValueRef ind_vec, start_vec, have_elts, fetch_max, tmp;
LLVMValueRef io_ptr, vbuffers_ptr, vb_ptr;
LLVMValueRef vb_stride[PIPE_MAX_ATTRIBS];
LLVMValueRef map_ptr[PIPE_MAX_ATTRIBS];
LLVMValueRef buffer_size_adj[PIPE_MAX_ATTRIBS];
LLVMValueRef instance_index[PIPE_MAX_ATTRIBS];
LLVMValueRef fake_buf_ptr, fake_buf;
struct draw_context *draw = llvm->draw;
const struct tgsi_shader_info *vs_info = &draw->vs.vertex_shader->info;
unsigned i, j;
struct lp_build_context bld, blduivec;
struct lp_build_loop_state lp_loop;
struct lp_build_if_state if_ctx;
const int vector_length = lp_native_vector_width / 32;
LLVMValueRef outputs[PIPE_MAX_SHADER_OUTPUTS][TGSI_NUM_CHANNELS];
struct lp_build_sampler_soa *sampler = 0;
struct lp_build_image_soa *image = NULL;
LLVMValueRef ret, clipmask_bool_ptr;
struct draw_llvm_variant_key *key = &variant->key;
/* If geometry shader is present we need to skip both the viewport
* transformation and clipping otherwise the inputs to the geometry
* shader will be incorrect.
* The code can't handle vp transform when vs writes vp index neither
* (though this would be fixable here, but couldn't just broadcast
* the values).
*/
const boolean bypass_viewport = key->has_gs || key->bypass_viewport ||
vs_info->writes_viewport_index;
const boolean enable_cliptest = !key->has_gs && (key->clip_xy ||
key->clip_z ||
key->clip_user ||
key->need_edgeflags);
LLVMValueRef variant_func;
const unsigned pos = draw->vs.position_output;
const unsigned cv = draw->vs.clipvertex_output;
boolean have_clipdist = FALSE;
struct lp_bld_tgsi_system_values system_values;
memset(&system_values, 0, sizeof(system_values));
memset(&outputs, 0, sizeof(outputs));
snprintf(func_name, sizeof(func_name), "draw_llvm_vs_variant%u",
variant->shader->variants_cached);
i = 0;
arg_types[i++] = get_context_ptr_type(variant); /* context */
arg_types[i++] = get_vertex_header_ptr_type(variant); /* vertex_header */
arg_types[i++] = get_buffer_ptr_type(variant); /* vbuffers */
arg_types[i++] = int32_type; /* count */
arg_types[i++] = int32_type; /* start/fetch_elt_max */
arg_types[i++] = int32_type; /* stride */
arg_types[i++] = get_vb_ptr_type(variant); /* pipe_vertex_buffer's */
arg_types[i++] = int32_type; /* instance_id */
arg_types[i++] = int32_type; /* vertex_id_offset */
arg_types[i++] = int32_type; /* start_instance */
arg_types[i++] = LLVMPointerType(int32_type, 0); /* fetch_elts */
func_type = LLVMFunctionType(LLVMInt8TypeInContext(context),
arg_types, num_arg_types, 0);
variant_func = LLVMAddFunction(gallivm->module, func_name, func_type);
variant->function = variant_func;
LLVMSetFunctionCallConv(variant_func, LLVMCCallConv);
for (i = 0; i < num_arg_types; ++i)
if (LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind)
lp_add_function_attr(variant_func, i + 1, LP_FUNC_ATTR_NOALIAS);
context_ptr = LLVMGetParam(variant_func, 0);
io_ptr = LLVMGetParam(variant_func, 1);
vbuffers_ptr = LLVMGetParam(variant_func, 2);
count = LLVMGetParam(variant_func, 3);
/*
* XXX: the maxelt part is unused. Not really useful, since we cannot
* get index buffer overflows due to vsplit (which provides its own
* elts buffer, with a different size than what's passed in here).
*/
start_or_maxelt = LLVMGetParam(variant_func, 4);
/*
* XXX: stride is actually unused. The stride we use is strictly calculated
* from the number of outputs (including the draw_extra outputs).
* Should probably fix some day (we need a new vs just because of extra
* outputs which the generated vs won't touch).
*/
stride = LLVMGetParam(variant_func, 5);
vb_ptr = LLVMGetParam(variant_func, 6);
system_values.instance_id = LLVMGetParam(variant_func, 7);
vertex_id_offset = LLVMGetParam(variant_func, 8);
start_instance = LLVMGetParam(variant_func, 9);
fetch_elts = LLVMGetParam(variant_func, 10);
lp_build_name(context_ptr, "context");
lp_build_name(io_ptr, "io");
lp_build_name(vbuffers_ptr, "vbuffers");
lp_build_name(count, "count");
lp_build_name(start_or_maxelt, "start_or_maxelt");
lp_build_name(stride, "stride");
lp_build_name(vb_ptr, "vb");
lp_build_name(system_values.instance_id, "instance_id");
lp_build_name(vertex_id_offset, "vertex_id_offset");
lp_build_name(start_instance, "start_instance");
lp_build_name(fetch_elts, "fetch_elts");
/*
* Function body
*/
block = LLVMAppendBasicBlockInContext(gallivm->context, variant_func, "entry");
builder = gallivm->builder;
LLVMPositionBuilderAtEnd(builder, block);
memset(&vs_type, 0, sizeof vs_type);
vs_type.floating = TRUE; /* floating point values */
vs_type.sign = TRUE; /* values are signed */
vs_type.norm = FALSE; /* values are not limited to [0,1] or [-1,1] */
vs_type.width = 32; /* 32-bit float */
vs_type.length = vector_length;
lp_build_context_init(&bld, gallivm, lp_type_uint(32));
lp_build_context_init(&blduivec, gallivm, lp_uint_type(vs_type));
/* hold temporary "bool" clipmask */
clipmask_bool_ptr = lp_build_alloca(gallivm, blduivec.vec_type, "");
fake_buf = lp_build_alloca_undef(gallivm,
LLVMVectorType(LLVMInt64TypeInContext(context), 4), "");
fake_buf = LLVMBuildBitCast(builder, fake_buf,
LLVMPointerType(LLVMInt8TypeInContext(context), 0), "");
fake_buf_ptr = LLVMBuildGEP(builder, fake_buf, &bld.zero, 1, "");
/* code generated texture sampling */
sampler = draw_llvm_sampler_soa_create(draw_llvm_variant_key_samplers(key));
image = draw_llvm_image_soa_create(draw_llvm_variant_key_images(key));
step = lp_build_const_int32(gallivm, vector_length);
ind_vec = blduivec.undef;
for (i = 0; i < vs_type.length; i++) {
LLVMValueRef index = lp_build_const_int32(gallivm, i);
ind_vec = LLVMBuildInsertElement(builder, ind_vec, index, index, "");
}
have_elts = LLVMBuildICmp(builder, LLVMIntNE,
LLVMConstPointerNull(arg_types[10]), fetch_elts, "");
fetch_max = LLVMBuildSub(builder, count, bld.one, "fetch_max");
fetch_max = lp_build_broadcast_scalar(&blduivec, fetch_max);
/*
* Only needed for non-indexed path.
*/
start_vec = lp_build_broadcast_scalar(&blduivec, start_or_maxelt);
/*
* Pre-calculate everything which is constant per shader invocation.
*/
for (j = 0; j < key->nr_vertex_elements; ++j) {
LLVMValueRef vb_buffer_offset, buffer_size, temp_ptr;
LLVMValueRef vb_info, vbuffer_ptr, buf_offset, ofbit;
struct pipe_vertex_element *velem = &key->vertex_element[j];
LLVMValueRef vb_index =
lp_build_const_int32(gallivm, velem->vertex_buffer_index);
LLVMValueRef bsize = lp_build_const_int32(gallivm,
util_format_get_blocksize(velem->src_format));
LLVMValueRef src_offset = lp_build_const_int32(gallivm,
velem->src_offset);
struct lp_build_if_state if_ctx;
if (velem->src_format != PIPE_FORMAT_NONE) {
vbuffer_ptr = LLVMBuildGEP(builder, vbuffers_ptr, &vb_index, 1, "");
vb_info = LLVMBuildGEP(builder, vb_ptr, &vb_index, 1, "");
vb_stride[j] = draw_jit_vbuffer_stride(gallivm, vb_info);
vb_stride[j] = LLVMBuildZExt(gallivm->builder, vb_stride[j],
LLVMInt32TypeInContext(context), "");
vb_buffer_offset = draw_jit_vbuffer_offset(gallivm, vb_info);
map_ptr[j] = draw_jit_dvbuffer_map(gallivm, vbuffer_ptr);
buffer_size = draw_jit_dvbuffer_size(gallivm, vbuffer_ptr);
ofbit = NULL;
/*
* We'll set buffer_size_adj to zero if we have of, so it will
* always overflow later automatically without having to keep ofbit.
* Overflows (with normal wraparound) doing the actual offset
* calculation should be ok, just not for the buffer size calc.
* It would also be possible to detect such overflows and return
* zeros if that happens, but this would be more complex.
*/
buf_offset = lp_build_add(&bld, vb_buffer_offset, src_offset);
tmp = lp_build_sub(&bld, bsize, bld.one);
buffer_size_adj[j] = lp_build_usub_overflow(gallivm, buffer_size, tmp,
&ofbit);
buffer_size_adj[j] = lp_build_usub_overflow(gallivm, buffer_size_adj[j],
buf_offset, &ofbit);
/*
* We can't easily set fake vertex buffers outside the generated code.
* Hence, set fake vertex buffers here instead basically, so fetch
* code can always fetch using offset 0, eliminating all control flow
* inside the main loop.
* (Alternatively, could have control flow per vector skipping fetch
* if ofbit is true.)
*/
if (velem->instance_divisor) {
/*
* Index is equal to the start instance plus the number of current
* instance divided by the divisor. In this case we compute it as:
* index = start_instance + (instance_id / divisor).
* Note we could actually do the fetch here, outside the loop -
* it's all constant, hopefully llvm recognizes this.
*/
LLVMValueRef current_instance;
current_instance = LLVMBuildUDiv(builder, system_values.instance_id,
lp_build_const_int32(gallivm,
velem->instance_divisor),
"instance_divisor");
instance_index[j] = lp_build_uadd_overflow(gallivm, start_instance,
current_instance, &ofbit);
}
buffer_size_adj[j] = LLVMBuildSelect(builder, ofbit, bld.zero,
buffer_size_adj[j], "");
temp_ptr = lp_build_alloca_undef(gallivm,
LLVMPointerType(LLVMInt8TypeInContext(context), 0), "");
lp_build_if(&if_ctx, gallivm, ofbit);
{
LLVMBuildStore(builder, fake_buf_ptr, temp_ptr);
}
lp_build_else(&if_ctx);
{
map_ptr[j] = LLVMBuildGEP(builder, map_ptr[j], &buf_offset, 1, "");
LLVMBuildStore(builder, map_ptr[j], temp_ptr);
}
lp_build_endif(&if_ctx);
map_ptr[j] = LLVMBuildLoad(builder, temp_ptr, "map_ptr");
if (0) {
lp_build_printf(gallivm, "velem %d, vbuf index = %u, vb_stride = %u\n",
lp_build_const_int32(gallivm, j),
vb_index, vb_stride[j]);
lp_build_printf(gallivm,
" vb_buffer_offset = %u, src_offset = %u, buf_offset = %u\n",
vb_buffer_offset, src_offset, buf_offset);
lp_build_printf(gallivm, " buffer size = %u, blocksize = %u\n",
buffer_size, bsize);
lp_build_printf(gallivm, " instance_id = %u\n", system_values.instance_id);
}
}
}
lp_build_loop_begin(&lp_loop, gallivm, bld.zero);
{
LLVMValueRef inputs[PIPE_MAX_SHADER_INPUTS][TGSI_NUM_CHANNELS];
LLVMValueRef io;
LLVMValueRef clipmask; /* holds the clipmask value */
LLVMValueRef true_index_array, index_store;
const LLVMValueRef (*ptr_aos)[TGSI_NUM_CHANNELS];
io_itr = lp_loop.counter;
io = LLVMBuildGEP(builder, io_ptr, &io_itr, 1, "");
#if DEBUG_STORE
lp_build_printf(gallivm, " --- io %d = %p, loop counter %d\n",
io_itr, io, lp_loop.counter);
#endif
true_index_array = lp_build_broadcast_scalar(&blduivec, lp_loop.counter);
true_index_array = LLVMBuildAdd(builder, true_index_array, ind_vec, "");
LLVMValueRef exec_mask = lp_build_cmp(&blduivec, PIPE_FUNC_LEQUAL, true_index_array, fetch_max);
/*
* Limit indices to fetch_max, otherwise might try to access indices
* beyond index buffer (or rather vsplit elt buffer) size.
* Could probably safely (?) skip this for non-indexed draws and
* simplify things minimally (by removing it could combine the ind_vec
* and start_vec adds). I think the only effect for non-indexed draws will
* be that for the invalid elements they will be all fetched from the
* same location as the last valid one, but noone should really care.
*/
true_index_array = lp_build_min(&blduivec, true_index_array, fetch_max);
index_store = lp_build_alloca_undef(gallivm, blduivec.vec_type, "index_store");
lp_build_if(&if_ctx, gallivm, have_elts);
{
/*
* Note: you'd expect some comparison/clamp against fetch_elt_max
* here.
* There used to be one here but it was incorrect: overflow was
* detected if index > fetch_elt_max - but the correct condition
* would be index >= fetch_elt_max (since this is just size of elts
* buffer / element size).
* Using the correct condition however will cause failures - due to
* vsplit/vcache code which rebases indices. So, as an example, if
* fetch_elt_max is just 1 and fetch_count 2, vsplit cache will
* replace all invalid indices with 0 - which in case of elt_bias
* not being zero will get a different fetch index than the valid
* index 0. So, just rely on vsplit code preventing out-of-bounds
* fetches. This is also why it's safe to do elts fetch even if there
* was no index buffer bound - the real buffer is never seen here, at
* least not if there are index buffer overflows...
*/
/*
* XXX should not have to do this, as scale can be handled
* natively by loads (hits asserts though).
*/
tmp = lp_build_shl_imm(&blduivec, true_index_array, 2);
fetch_elts = LLVMBuildBitCast(builder, fetch_elts,
LLVMPointerType(LLVMInt8TypeInContext(context),
0), "");
tmp = lp_build_gather(gallivm, vs_type.length,
32, bld.type, TRUE,
fetch_elts, tmp, FALSE);
LLVMBuildStore(builder, tmp, index_store);
}
lp_build_else(&if_ctx);
{
tmp = LLVMBuildAdd(builder, true_index_array, start_vec, "");
LLVMBuildStore(builder, tmp, index_store);
}
lp_build_endif(&if_ctx);
true_index_array = LLVMBuildLoad(builder, index_store, "");
for (j = 0; j < key->nr_vertex_elements; ++j) {
struct pipe_vertex_element *velem = &key->vertex_element[j];
const struct util_format_description *format_desc =
util_format_description(velem->src_format);
if (format_desc->format == PIPE_FORMAT_NONE) {
for (i = 0; i < TGSI_NUM_CHANNELS; i++) {
inputs[j][i] = lp_build_zero(gallivm, vs_type);
}
}
else if (velem->instance_divisor) {
fetch_instanced(gallivm, format_desc, vs_type,
vb_stride[j], map_ptr[j],
buffer_size_adj[j],
inputs[j], instance_index[j]);
}
else {
fetch_vector(gallivm, format_desc, vs_type,
vb_stride[j], map_ptr[j],
buffer_size_adj[j],
inputs[j], true_index_array);
}
}
struct lp_build_mask_context mask;
lp_build_mask_begin(&mask, gallivm, vs_type, exec_mask);
/* In the paths with elts vertex id has to be unaffected by the
* index bias and because indices inside our elements array have
* already had index bias applied we need to subtract it here to
* get back to the original index.
* in the linear paths vertex id has to be unaffected by the
* original start index and because we abuse the 'start' variable
* to either represent the actual start index or the index at which
* the primitive was split (we split rendering into chunks of at
* most 4095-vertices) we need to back out the original start
* index out of our vertex id here.
*/
system_values.basevertex = lp_build_broadcast_scalar(&blduivec,
vertex_id_offset);
system_values.vertex_id = true_index_array;
system_values.vertex_id_nobase = LLVMBuildSub(builder, true_index_array,
system_values.basevertex, "");
ptr_aos = (const LLVMValueRef (*)[TGSI_NUM_CHANNELS]) inputs;
generate_vs(variant,
builder,
vs_type,
outputs,
ptr_aos,
&system_values,
context_ptr,
sampler,
image,
key->clamp_vertex_color,
&mask);
lp_build_mask_end(&mask);
if (pos != -1 && cv != -1) {
/* store original positions in clip before further manipulation */
store_clip(gallivm, vs_type, io, outputs, pos);
/* do cliptest */
if (enable_cliptest) {
LLVMValueRef temp = LLVMBuildLoad(builder, clipmask_bool_ptr, "");
/* allocate clipmask, assign it integer type */
clipmask = generate_clipmask(llvm,
gallivm,
vs_type,
outputs,
key,
context_ptr, &have_clipdist);
temp = LLVMBuildOr(builder, clipmask, temp, "");
/* store temporary clipping boolean value */
LLVMBuildStore(builder, temp, clipmask_bool_ptr);
}
else {
clipmask = blduivec.zero;
}
/* do viewport mapping */
if (!bypass_viewport) {
generate_viewport(variant, builder, vs_type, outputs, context_ptr);
}
}
else {
clipmask = blduivec.zero;
}
/* store clipmask in vertex header,
* original positions in clip
* and transformed positions in data
*/
convert_to_aos(gallivm, io, NULL, outputs, clipmask,
vs_info->num_outputs, vs_type,
enable_cliptest && key->need_edgeflags);
}
lp_build_loop_end_cond(&lp_loop, count, step, LLVMIntUGE);
sampler->destroy(sampler);
image->destroy(image);
/* return clipping boolean value for function */
ret = clipmask_booli8(gallivm, vs_type, clipmask_bool_ptr,
enable_cliptest && key->need_edgeflags);
LLVMBuildRet(builder, ret);
gallivm_verify_function(gallivm, variant_func);
}
struct draw_llvm_variant_key *
draw_llvm_make_variant_key(struct draw_llvm *llvm, char *store)
{
unsigned i;
struct draw_llvm_variant_key *key;
struct draw_sampler_static_state *draw_sampler;
struct draw_image_static_state *draw_image;
key = (struct draw_llvm_variant_key *)store;
memset(key, 0, offsetof(struct draw_llvm_variant_key, vertex_element[0]));
key->clamp_vertex_color = llvm->draw->rasterizer->clamp_vertex_color; /**/
/* will have to rig this up properly later */
key->clip_xy = llvm->draw->clip_xy;
key->clip_z = llvm->draw->clip_z;
key->clip_user = llvm->draw->clip_user;
key->bypass_viewport = llvm->draw->bypass_viewport;
key->clip_halfz = llvm->draw->rasterizer->clip_halfz;
/* XXX assumes edgeflag output not at 0 */
key->need_edgeflags = (llvm->draw->vs.edgeflag_output ? TRUE : FALSE);
key->ucp_enable = llvm->draw->rasterizer->clip_plane_enable;
key->has_gs = llvm->draw->gs.geometry_shader != NULL;
key->num_outputs = draw_total_vs_outputs(llvm->draw);
/* All variants of this shader will have the same value for
* nr_samplers. Not yet trying to compact away holes in the
* sampler array.
*/
key->nr_samplers = llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_SAMPLER] + 1;
if (llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] != -1) {
key->nr_sampler_views =
llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] + 1;
}
else {
key->nr_sampler_views = key->nr_samplers;
}
key->nr_images = llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_IMAGE] + 1;
/* Presumably all variants of the shader should have the same
* number of vertex elements - ie the number of shader inputs.
* NOTE: we NEED to store the needed number of needed inputs
* here, not the number of provided elements to match keysize
* (and the offset of sampler state in the key).
* If we have excess number of vertex elements, this is valid,
* but the excess ones don't matter.
* If we don't have enough vertex elements (which looks not really
* valid but we'll handle it gracefully) fill out missing ones with
* zero (we'll recognize these later by PIPE_FORMAT_NONE).
*/
key->nr_vertex_elements =
llvm->draw->vs.vertex_shader->info.file_max[TGSI_FILE_INPUT] + 1;
if (llvm->draw->pt.nr_vertex_elements < key->nr_vertex_elements) {
debug_printf("draw: vs with %d inputs but only have %d vertex elements\n",
key->nr_vertex_elements, llvm->draw->pt.nr_vertex_elements);
memset(key->vertex_element, 0,
sizeof(struct pipe_vertex_element) * key->nr_vertex_elements);
}
memcpy(key->vertex_element,
llvm->draw->pt.vertex_element,
sizeof(struct pipe_vertex_element) *
MIN2(key->nr_vertex_elements, llvm->draw->pt.nr_vertex_elements));
draw_sampler = draw_llvm_variant_key_samplers(key);
memset(draw_sampler, 0,
MAX2(key->nr_samplers, key->nr_sampler_views) * sizeof *draw_sampler);
for (i = 0 ; i < key->nr_samplers; i++) {
lp_sampler_static_sampler_state(&draw_sampler[i].sampler_state,
llvm->draw->samplers[PIPE_SHADER_VERTEX][i]);
}
for (i = 0 ; i < key->nr_sampler_views; i++) {
lp_sampler_static_texture_state(&draw_sampler[i].texture_state,
llvm->draw->sampler_views[PIPE_SHADER_VERTEX][i]);
}
draw_image = draw_llvm_variant_key_images(key);
memset(draw_image, 0,
key->nr_images * sizeof *draw_image);
for (i = 0; i < key->nr_images; i++) {
lp_sampler_static_texture_state_image(&draw_image[i].image_state,
llvm->draw->images[PIPE_SHADER_VERTEX][i]);
}
return key;
}
void
draw_llvm_dump_variant_key(struct draw_llvm_variant_key *key)
{
unsigned i;
struct draw_sampler_static_state *sampler = draw_llvm_variant_key_samplers(key);
struct draw_image_static_state *image = draw_llvm_variant_key_images(key);
debug_printf("clamp_vertex_color = %u\n", key->clamp_vertex_color);
debug_printf("clip_xy = %u\n", key->clip_xy);
debug_printf("clip_z = %u\n", key->clip_z);
debug_printf("clip_user = %u\n", key->clip_user);
debug_printf("bypass_viewport = %u\n", key->bypass_viewport);
debug_printf("clip_halfz = %u\n", key->clip_halfz);
debug_printf("need_edgeflags = %u\n", key->need_edgeflags);
debug_printf("has_gs = %u\n", key->has_gs);
debug_printf("ucp_enable = %u\n", key->ucp_enable);
for (i = 0 ; i < key->nr_vertex_elements; i++) {
debug_printf("vertex_element[%i].src_offset = %u\n", i, key->vertex_element[i].src_offset);
debug_printf("vertex_element[%i].instance_divisor = %u\n", i, key->vertex_element[i].instance_divisor);
debug_printf("vertex_element[%i].vertex_buffer_index = %u\n", i, key->vertex_element[i].vertex_buffer_index);
debug_printf("vertex_element[%i].src_format = %s\n", i, util_format_name(key->vertex_element[i].src_format));
}
for (i = 0 ; i < key->nr_sampler_views; i++) {
debug_printf("sampler[%i].src_format = %s\n", i, util_format_name(sampler[i].texture_state.format));
}
for (i = 0 ; i < key->nr_images; i++)
debug_printf("images[%i].format = %s\n", i, util_format_name(image[i].image_state.format));
}
void
draw_llvm_set_mapped_texture(struct draw_context *draw,
enum pipe_shader_type shader_stage,
unsigned sview_idx,
uint32_t width, uint32_t height, uint32_t depth,
uint32_t first_level, uint32_t last_level,
const void *base_ptr,
uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
uint32_t mip_offsets[PIPE_MAX_TEXTURE_LEVELS])
{
unsigned j;
struct draw_jit_texture *jit_tex;
assert(shader_stage == PIPE_SHADER_VERTEX ||
shader_stage == PIPE_SHADER_GEOMETRY);
if (shader_stage == PIPE_SHADER_VERTEX) {
assert(sview_idx < ARRAY_SIZE(draw->llvm->jit_context.textures));
jit_tex = &draw->llvm->jit_context.textures[sview_idx];
} else if (shader_stage == PIPE_SHADER_GEOMETRY) {
assert(sview_idx < ARRAY_SIZE(draw->llvm->gs_jit_context.textures));
jit_tex = &draw->llvm->gs_jit_context.textures[sview_idx];
} else {
assert(0);
return;
}
jit_tex->width = width;
jit_tex->height = height;
jit_tex->depth = depth;
jit_tex->first_level = first_level;
jit_tex->last_level = last_level;
jit_tex->base = base_ptr;
for (j = first_level; j <= last_level; j++) {
jit_tex->mip_offsets[j] = mip_offsets[j];
jit_tex->row_stride[j] = row_stride[j];
jit_tex->img_stride[j] = img_stride[j];
}
}
void
draw_llvm_set_mapped_image(struct draw_context *draw,
enum pipe_shader_type shader_stage,
unsigned idx,
uint32_t width, uint32_t height, uint32_t depth,
const void *base_ptr,
uint32_t row_stride,
uint32_t img_stride)
{
struct draw_jit_image *jit_image;
assert(shader_stage == PIPE_SHADER_VERTEX ||
shader_stage == PIPE_SHADER_GEOMETRY);
if (shader_stage == PIPE_SHADER_VERTEX) {
assert(idx < ARRAY_SIZE(draw->llvm->jit_context.images));
jit_image = &draw->llvm->jit_context.images[idx];
} else if (shader_stage == PIPE_SHADER_GEOMETRY) {
assert(idx < ARRAY_SIZE(draw->llvm->gs_jit_context.images));
jit_image = &draw->llvm->gs_jit_context.images[idx];
} else {
assert(0);
return;
}
jit_image->width = width;
jit_image->height = height;
jit_image->depth = depth;
jit_image->base = base_ptr;
jit_image->row_stride = row_stride;
jit_image->img_stride = img_stride;
}
void
draw_llvm_set_sampler_state(struct draw_context *draw,
enum pipe_shader_type shader_type)
{
unsigned i;
if (shader_type == PIPE_SHADER_VERTEX) {
for (i = 0; i < draw->num_samplers[PIPE_SHADER_VERTEX]; i++) {
struct draw_jit_sampler *jit_sam = &draw->llvm->jit_context.samplers[i];
if (draw->samplers[PIPE_SHADER_VERTEX][i]) {
const struct pipe_sampler_state *s
= draw->samplers[PIPE_SHADER_VERTEX][i];
jit_sam->min_lod = s->min_lod;
jit_sam->max_lod = s->max_lod;
jit_sam->lod_bias = s->lod_bias;
COPY_4V(jit_sam->border_color, s->border_color.f);
}
}
} else if (shader_type == PIPE_SHADER_GEOMETRY) {
for (i = 0; i < draw->num_samplers[PIPE_SHADER_GEOMETRY]; i++) {
struct draw_jit_sampler *jit_sam = &draw->llvm->gs_jit_context.samplers[i];
if (draw->samplers[PIPE_SHADER_GEOMETRY][i]) {
const struct pipe_sampler_state *s
= draw->samplers[PIPE_SHADER_GEOMETRY][i];
jit_sam->min_lod = s->min_lod;
jit_sam->max_lod = s->max_lod;
jit_sam->lod_bias = s->lod_bias;
COPY_4V(jit_sam->border_color, s->border_color.f);
}
}
}
}
void
draw_llvm_destroy_variant(struct draw_llvm_variant *variant)
{
struct draw_llvm *llvm = variant->llvm;
if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
debug_printf("Deleting VS variant: %u vs variants,\t%u total variants\n",
variant->shader->variants_cached, llvm->nr_variants);
}
gallivm_destroy(variant->gallivm);
remove_from_list(&variant->list_item_local);
variant->shader->variants_cached--;
remove_from_list(&variant->list_item_global);
llvm->nr_variants--;
FREE(variant);
}
/**
* Create LLVM types for various structures.
*/
static void
create_gs_jit_types(struct draw_gs_llvm_variant *var)
{
struct gallivm_state *gallivm = var->gallivm;
LLVMTypeRef texture_type, sampler_type, image_type, context_type;
texture_type = create_jit_texture_type(gallivm, "texture");
sampler_type = create_jit_sampler_type(gallivm, "sampler");
image_type = create_jit_image_type(gallivm, "image");
context_type = create_gs_jit_context_type(gallivm,
var->shader->base.vector_length,
texture_type, sampler_type,
image_type,
"draw_gs_jit_context");
var->context_ptr_type = LLVMPointerType(context_type, 0);
var->input_array_type = create_gs_jit_input_type(gallivm);
}
static LLVMTypeRef
get_gs_context_ptr_type(struct draw_gs_llvm_variant *variant)
{
if (!variant->context_ptr_type)
create_gs_jit_types(variant);
return variant->context_ptr_type;
}
static LLVMValueRef
generate_mask_value(struct draw_gs_llvm_variant *variant,
struct lp_type gs_type)
{
struct gallivm_state *gallivm = variant->gallivm;
LLVMBuilderRef builder = gallivm->builder;
struct lp_type mask_type = lp_int_type(gs_type);
LLVMValueRef num_prims;
LLVMValueRef mask_val = lp_build_const_vec(gallivm, mask_type, 0);
unsigned i;
num_prims = lp_build_broadcast(gallivm, lp_build_vec_type(gallivm, mask_type),
variant->num_prims);
for (i = 0; i < gs_type.length; i++) {
LLVMValueRef idx = lp_build_const_int32(gallivm, i);
mask_val = LLVMBuildInsertElement(builder, mask_val, idx, idx, "");
}
mask_val = lp_build_compare(gallivm, mask_type,
PIPE_FUNC_GREATER, num_prims, mask_val);
return mask_val;
}
static void
draw_gs_llvm_generate(struct draw_llvm *llvm,
struct draw_gs_llvm_variant *variant)
{
struct gallivm_state *gallivm = variant->gallivm;
LLVMContextRef context = gallivm->context;
LLVMTypeRef int32_type = LLVMInt32TypeInContext(context);
LLVMTypeRef arg_types[7];
LLVMTypeRef func_type;
LLVMValueRef variant_func;
LLVMValueRef context_ptr;
LLVMValueRef prim_id_ptr;
LLVMBasicBlockRef block;
LLVMBuilderRef builder;
LLVMValueRef io_ptr, input_array, num_prims, mask_val;
struct lp_build_sampler_soa *sampler = 0;
struct lp_build_image_soa *image = NULL;
struct lp_build_context bld;
struct lp_bld_tgsi_system_values system_values;
char func_name[64];
struct lp_type gs_type;
unsigned i;
struct draw_gs_llvm_iface gs_iface;
const struct tgsi_token *tokens = variant->shader->base.state.tokens;
LLVMValueRef consts_ptr, num_consts_ptr;
LLVMValueRef ssbos_ptr, num_ssbos_ptr;
LLVMValueRef outputs[PIPE_MAX_SHADER_OUTPUTS][TGSI_NUM_CHANNELS];
struct lp_build_mask_context mask;
const struct tgsi_shader_info *gs_info = &variant->shader->base.info;
unsigned vector_length = variant->shader->base.vector_length;
memset(&system_values, 0, sizeof(system_values));
memset(&outputs, 0, sizeof(outputs));
snprintf(func_name, sizeof(func_name), "draw_llvm_gs_variant%u",
variant->shader->variants_cached);
assert(variant->vertex_header_ptr_type);
arg_types[0] = get_gs_context_ptr_type(variant); /* context */
arg_types[1] = variant->input_array_type; /* input */
arg_types[2] = variant->vertex_header_ptr_type; /* vertex_header */
arg_types[3] = int32_type; /* num_prims */
arg_types[4] = int32_type; /* instance_id */
arg_types[5] = LLVMPointerType(
LLVMVectorType(int32_type, vector_length), 0); /* prim_id_ptr */
arg_types[6] = int32_type;
func_type = LLVMFunctionType(int32_type, arg_types, ARRAY_SIZE(arg_types), 0);
variant_func = LLVMAddFunction(gallivm->module, func_name, func_type);
variant->function = variant_func;
LLVMSetFunctionCallConv(variant_func, LLVMCCallConv);
for (i = 0; i < ARRAY_SIZE(arg_types); ++i)
if (LLVMGetTypeKind(arg_types[i]) == LLVMPointerTypeKind)
lp_add_function_attr(variant_func, i + 1, LP_FUNC_ATTR_NOALIAS);
context_ptr = LLVMGetParam(variant_func, 0);
input_array = LLVMGetParam(variant_func, 1);
io_ptr = LLVMGetParam(variant_func, 2);
num_prims = LLVMGetParam(variant_func, 3);
system_values.instance_id = LLVMGetParam(variant_func, 4);
prim_id_ptr = LLVMGetParam(variant_func, 5);
system_values.invocation_id = LLVMGetParam(variant_func, 6);
lp_build_name(context_ptr, "context");
lp_build_name(input_array, "input");
lp_build_name(io_ptr, "io");
lp_build_name(num_prims, "num_prims");
lp_build_name(system_values.instance_id, "instance_id");
lp_build_name(prim_id_ptr, "prim_id_ptr");
lp_build_name(system_values.invocation_id, "invocation_id");
variant->context_ptr = context_ptr;
variant->io_ptr = io_ptr;
variant->num_prims = num_prims;
gs_iface.base.fetch_input = draw_gs_llvm_fetch_input;
gs_iface.base.emit_vertex = draw_gs_llvm_emit_vertex;
gs_iface.base.end_primitive = draw_gs_llvm_end_primitive;
gs_iface.base.gs_epilogue = draw_gs_llvm_epilogue;
gs_iface.input = input_array;
gs_iface.variant = variant;
/*
* Function body
*/
block = LLVMAppendBasicBlockInContext(gallivm->context, variant_func, "entry");
builder = gallivm->builder;
LLVMPositionBuilderAtEnd(builder, block);
lp_build_context_init(&bld, gallivm, lp_type_int(32));
memset(&gs_type, 0, sizeof gs_type);
gs_type.floating = TRUE; /* floating point values */
gs_type.sign = TRUE; /* values are signed */
gs_type.norm = FALSE; /* values are not limited to [0,1] or [-1,1] */
gs_type.width = 32; /* 32-bit float */
gs_type.length = vector_length;
consts_ptr = draw_gs_jit_context_constants(variant->gallivm, context_ptr);
num_consts_ptr =
draw_gs_jit_context_num_constants(variant->gallivm, context_ptr);
ssbos_ptr = draw_gs_jit_context_ssbos(variant->gallivm, context_ptr);
num_ssbos_ptr =
draw_gs_jit_context_num_ssbos(variant->gallivm, context_ptr);
/* code generated texture sampling */
sampler = draw_llvm_sampler_soa_create(variant->key.samplers);
image = draw_llvm_image_soa_create(draw_gs_llvm_variant_key_images(&variant->key));
mask_val = generate_mask_value(variant, gs_type);
lp_build_mask_begin(&mask, gallivm, gs_type, mask_val);
if (gs_info->uses_primid) {
system_values.prim_id = LLVMBuildLoad(builder, prim_id_ptr, "prim_id");
}
if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
if (llvm->draw->gs.geometry_shader->state.type == PIPE_SHADER_IR_TGSI)
tgsi_dump(tokens, 0);
else
nir_print_shader(llvm->draw->gs.geometry_shader->state.ir.nir, stderr);
draw_gs_llvm_dump_variant_key(&variant->key);
}
struct lp_build_tgsi_params params;
memset(&params, 0, sizeof(params));
params.type = gs_type;
params.mask = &mask;
params.consts_ptr = consts_ptr;
params.const_sizes_ptr = num_consts_ptr;
params.system_values = &system_values;
params.context_ptr = context_ptr;
params.sampler = sampler;
params.info = &llvm->draw->gs.geometry_shader->info;
params.gs_iface = (const struct lp_build_gs_iface *)&gs_iface;
params.ssbo_ptr = ssbos_ptr;
params.ssbo_sizes_ptr = num_ssbos_ptr;
params.image = image;
if (llvm->draw->gs.geometry_shader->state.type == PIPE_SHADER_IR_TGSI)
lp_build_tgsi_soa(variant->gallivm,
tokens,
&params,
outputs);
else
lp_build_nir_soa(variant->gallivm,
llvm->draw->gs.geometry_shader->state.ir.nir,
&params,
outputs);
sampler->destroy(sampler);
image->destroy(image);
lp_build_mask_end(&mask);
LLVMBuildRet(builder, lp_build_zero(gallivm, lp_type_uint(32)));
gallivm_verify_function(gallivm, variant_func);
}
struct draw_gs_llvm_variant *
draw_gs_llvm_create_variant(struct draw_llvm *llvm,
unsigned num_outputs,
const struct draw_gs_llvm_variant_key *key)
{
struct draw_gs_llvm_variant *variant;
struct llvm_geometry_shader *shader =
llvm_geometry_shader(llvm->draw->gs.geometry_shader);
LLVMTypeRef vertex_header;
char module_name[64];
variant = MALLOC(sizeof *variant +
shader->variant_key_size -
sizeof variant->key);
if (!variant)
return NULL;
variant->llvm = llvm;
variant->shader = shader;
snprintf(module_name, sizeof(module_name), "draw_llvm_gs_variant%u",
variant->shader->variants_cached);
variant->gallivm = gallivm_create(module_name, llvm->context);
create_gs_jit_types(variant);
memcpy(&variant->key, key, shader->variant_key_size);
vertex_header = create_jit_vertex_header(variant->gallivm, num_outputs);
variant->vertex_header_ptr_type = LLVMPointerType(vertex_header, 0);
draw_gs_llvm_generate(llvm, variant);
gallivm_compile_module(variant->gallivm);
variant->jit_func = (draw_gs_jit_func)
gallivm_jit_function(variant->gallivm, variant->function);
gallivm_free_ir(variant->gallivm);
variant->list_item_global.base = variant;
variant->list_item_local.base = variant;
/*variant->no = */shader->variants_created++;
variant->list_item_global.base = variant;
return variant;
}
void
draw_gs_llvm_destroy_variant(struct draw_gs_llvm_variant *variant)
{
struct draw_llvm *llvm = variant->llvm;
if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
debug_printf("Deleting GS variant: %u gs variants,\t%u total variants\n",
variant->shader->variants_cached, llvm->nr_gs_variants);
}
gallivm_destroy(variant->gallivm);
remove_from_list(&variant->list_item_local);
variant->shader->variants_cached--;
remove_from_list(&variant->list_item_global);
llvm->nr_gs_variants--;
FREE(variant);
}
struct draw_gs_llvm_variant_key *
draw_gs_llvm_make_variant_key(struct draw_llvm *llvm, char *store)
{
unsigned i;
struct draw_gs_llvm_variant_key *key;
struct draw_sampler_static_state *draw_sampler;
struct draw_image_static_state *draw_image;
key = (struct draw_gs_llvm_variant_key *)store;
memset(key, 0, offsetof(struct draw_gs_llvm_variant_key, samplers[0]));
key->num_outputs = draw_total_gs_outputs(llvm->draw);
/* All variants of this shader will have the same value for
* nr_samplers. Not yet trying to compact away holes in the
* sampler array.
*/
key->nr_samplers = llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_SAMPLER] + 1;
if (llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] != -1) {
key->nr_sampler_views =
llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_SAMPLER_VIEW] + 1;
}
else {
key->nr_sampler_views = key->nr_samplers;
}
key->nr_images = llvm->draw->gs.geometry_shader->info.file_max[TGSI_FILE_IMAGE] + 1;
draw_sampler = key->samplers;
memset(draw_sampler, 0, MAX2(key->nr_samplers, key->nr_sampler_views) * sizeof *draw_sampler);
for (i = 0 ; i < key->nr_samplers; i++) {
lp_sampler_static_sampler_state(&draw_sampler[i].sampler_state,
llvm->draw->samplers[PIPE_SHADER_GEOMETRY][i]);
}
for (i = 0 ; i < key->nr_sampler_views; i++) {
lp_sampler_static_texture_state(&draw_sampler[i].texture_state,
llvm->draw->sampler_views[PIPE_SHADER_GEOMETRY][i]);
}
draw_image = draw_gs_llvm_variant_key_images(key);
memset(draw_image, 0,
key->nr_images * sizeof *draw_image);
for (i = 0; i < key->nr_images; i++) {
lp_sampler_static_texture_state_image(&draw_image[i].image_state,
llvm->draw->images[PIPE_SHADER_GEOMETRY][i]);
}
return key;
}
void
draw_gs_llvm_dump_variant_key(struct draw_gs_llvm_variant_key *key)
{
unsigned i;
struct draw_sampler_static_state *sampler = key->samplers;
struct draw_image_static_state *image = draw_gs_llvm_variant_key_images(key);
for (i = 0 ; i < key->nr_sampler_views; i++) {
debug_printf("sampler[%i].src_format = %s\n", i,
util_format_name(sampler[i].texture_state.format));
}
for (i = 0 ; i < key->nr_images; i++)
debug_printf("images[%i].format = %s\n", i, util_format_name(image[i].image_state.format));
}
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