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mesa/main: Add support for GL_ARB_cull_distance (v2)

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airlied:
v2: rename LowerClipDistance to LowerCombinedClipCullDistnace.
I don't think we want any other behaviour with any current hw.

Signed-off-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Tobias Klausmann
2016-05-08 22:44:02 +02:00
committed by Dave Airlie
parent f2a2e08e01
commit eb18fea707
10 changed files with 27 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/compiler/glsl/link_varyings.cpp
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@@ -627,7 +627,7 @@ tfeedback_decl::init(struct gl_context *ctx, const void *mem_ctx,
* class must behave specially to account for the fact that gl_ClipDistance
* is converted from a float[8] to a vec4[2].
*/
if (ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].LowerClipDistance &&
if (ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].LowerCombinedClipCullDistance &&
strcmp(this->var_name, "gl_ClipDistance") == 0) {
this->lowered_builtin_array_variable = clip_distance;
}

2
src/compiler/glsl/linker.cpp
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@@ -4560,7 +4560,7 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
if (!prog->LinkStatus)
goto done;
if (ctx->Const.ShaderCompilerOptions[i].LowerClipDistance) {
if (ctx->Const.ShaderCompilerOptions[i].LowerCombinedClipCullDistance) {
lower_clip_distance(prog->_LinkedShaders[i]);
}

2
src/compiler/glsl/lower_clip_distance.cpp
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@@ -42,7 +42,7 @@
*
* Since some hardware may not internally represent gl_ClipDistance as a pair
* of vec4's, this lowering pass is optional. To enable it, set the
* LowerClipDistance flag in gl_shader_compiler_options to true.
* LowerCombinedClipCullDistance flag in gl_shader_compiler_options to true.
*/
#include "glsl_symbol_table.h"

2
src/mesa/drivers/dri/i965/brw_compiler.c
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@@ -168,7 +168,7 @@ brw_compiler_create(void *mem_ctx, const struct brw_device_info *devinfo)
compiler->glsl_compiler_options[i].EmitNoMainReturn = true;
compiler->glsl_compiler_options[i].EmitNoIndirectInput = true;
compiler->glsl_compiler_options[i].EmitNoIndirectUniform = false;
compiler->glsl_compiler_options[i].LowerClipDistance = true;
compiler->glsl_compiler_options[i].LowerCombinedClipCullDistance = true;
bool is_scalar = compiler->scalar_stage[i];

1
src/mesa/main/extensions_table.h
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@@ -44,6 +44,7 @@ EXT(ARB_conditional_render_inverted , ARB_conditional_render_inverted
EXT(ARB_conservative_depth , ARB_conservative_depth , GLL, GLC, x , x , 2011)
EXT(ARB_copy_buffer , dummy_true , GLL, GLC, x , x , 2008)
EXT(ARB_copy_image , ARB_copy_image , GLL, GLC, x , x , 2012)
EXT(ARB_cull_distance , ARB_cull_distance , GLL, GLC, x , x , 2014)
EXT(ARB_debug_output , dummy_true , GLL, GLC, x , x , 2009)
EXT(ARB_depth_buffer_float , ARB_depth_buffer_float , GLL, GLC, x , x , 2008)
EXT(ARB_depth_clamp , ARB_depth_clamp , GLL, GLC, x , x , 2003)

1
src/mesa/main/get.c
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@@ -465,6 +465,7 @@ EXTRA_EXT(ARB_shader_storage_buffer_object);
EXTRA_EXT(ARB_indirect_parameters);
EXTRA_EXT(ATI_meminfo);
EXTRA_EXT(NVX_gpu_memory_info);
EXTRA_EXT(ARB_cull_distance);
static const int
extra_ARB_color_buffer_float_or_glcore[] = {

4
src/mesa/main/get_hash_params.py
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@@ -878,6 +878,10 @@ descriptor=[
[ "GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX", "LOC_CUSTOM, TYPE_INT, NO_OFFSET, extra_NVX_gpu_memory_info" ],
[ "GPU_MEMORY_INFO_EVICTION_COUNT_NVX", "LOC_CUSTOM, TYPE_INT, NO_OFFSET, extra_NVX_gpu_memory_info" ],
[ "GPU_MEMORY_INFO_EVICTED_MEMORY_NVX", "LOC_CUSTOM, TYPE_INT, NO_OFFSET, extra_NVX_gpu_memory_info" ],
# GL_ARB_cull_distance
[ "MAX_CULL_DISTANCES", "CONTEXT_INT(Const.MaxClipPlanes), extra_ARB_cull_distance" ],
[ "MAX_COMBINED_CLIP_AND_CULL_DISTANCES", "CONTEXT_INT(Const.MaxClipPlanes), extra_ARB_cull_distance" ],
]},
# Enums restricted to OpenGL Core profile

14
src/mesa/main/mtypes.h
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@@ -1922,6 +1922,7 @@ struct gl_program
* gl_ClipDistance output. Ignored for fragment shaders.
*/
unsigned ClipDistanceArraySize;
unsigned CullDistanceArraySize;
/** Named parameters, constants, etc. from program text */
@@ -2703,6 +2704,8 @@ struct gl_shader_program
*/
GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
0 if not present. */
GLuint CullDistanceArraySize; /**< Size of the gl_CullDistance array, or
0 if not present. */
} TessEval;
/**
@@ -2725,6 +2728,8 @@ struct gl_shader_program
*/
GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
0 if not present. */
GLuint CullDistanceArraySize; /**< Size of the gl_CullDistance array, or
0 if not present. */
bool UsesEndPrimitive;
bool UsesStreams;
} Geom;
@@ -2737,6 +2742,8 @@ struct gl_shader_program
*/
GLuint ClipDistanceArraySize; /**< Size of the gl_ClipDistance array, or
0 if not present. */
GLuint CullDistanceArraySize; /**< Size of the gl_CullDistance array, or
0 if not present. */
} Vert;
/**
@@ -2780,6 +2787,7 @@ struct gl_shader_program
* stage before the fragment shader.
*/
unsigned LastClipDistanceArraySize;
unsigned LastCullDistanceArraySize;
unsigned NumUniformBlocks;
struct gl_uniform_block *UniformBlocks;
@@ -2911,7 +2919,10 @@ struct gl_shader_compiler_options
GLboolean EmitNoNoise; /**< Emit NOISE opcodes? */
GLboolean EmitNoPow; /**< Emit POW opcodes? */
GLboolean EmitNoSat; /**< Emit SAT opcodes? */
GLboolean LowerClipDistance; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
GLboolean LowerCombinedClipCullDistance; /** Lower gl_ClipDistance and
* gl_CullDistance together from
* float[8] to vec4[2]
**/
/**
* \name Forms of indirect addressing the driver cannot do.
@@ -3742,6 +3753,7 @@ struct gl_extensions
GLboolean ARB_conditional_render_inverted;
GLboolean ARB_conservative_depth;
GLboolean ARB_copy_image;
GLboolean ARB_cull_distance;
GLboolean ARB_depth_buffer_float;
GLboolean ARB_depth_clamp;
GLboolean ARB_depth_texture;

3
src/mesa/main/shaderapi.c
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@@ -2080,6 +2080,7 @@ _mesa_copy_linked_program_data(gl_shader_stage type,
switch (type) {
case MESA_SHADER_VERTEX:
dst->ClipDistanceArraySize = src->Vert.ClipDistanceArraySize;
dst->CullDistanceArraySize = src->Vert.CullDistanceArraySize;
break;
case MESA_SHADER_TESS_CTRL: {
struct gl_tess_ctrl_program *dst_tcp =
@@ -2095,6 +2096,7 @@ _mesa_copy_linked_program_data(gl_shader_stage type,
dst_tep->VertexOrder = src->TessEval.VertexOrder;
dst_tep->PointMode = src->TessEval.PointMode;
dst->ClipDistanceArraySize = src->TessEval.ClipDistanceArraySize;
dst->CullDistanceArraySize = src->TessEval.CullDistanceArraySize;
break;
}
case MESA_SHADER_GEOMETRY: {
@@ -2105,6 +2107,7 @@ _mesa_copy_linked_program_data(gl_shader_stage type,
dst_gp->InputType = src->Geom.InputType;
dst_gp->OutputType = src->Geom.OutputType;
dst->ClipDistanceArraySize = src->Geom.ClipDistanceArraySize;
dst->CullDistanceArraySize = src->Geom.CullDistanceArraySize;
dst_gp->UsesEndPrimitive = src->Geom.UsesEndPrimitive;
dst_gp->UsesStreams = src->Geom.UsesStreams;
break;

2
src/mesa/state_tracker/st_extensions.c
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@@ -306,7 +306,7 @@ void st_init_limits(struct pipe_screen *screen,
screen->get_shader_param(screen, sh,
PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT);
options->LowerClipDistance = true;
options->LowerCombinedClipCullDistance = true;
options->LowerBufferInterfaceBlocks = true;
if (sh == PIPE_SHADER_COMPUTE)