1537 lines
50 KiB
C
1537 lines
50 KiB
C
/**************************************************************************
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*
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* Copyright 2007 VMware, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Authors:
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* Brian Paul
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*/
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#include "main/imports.h"
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#include "main/image.h"
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#include "main/bufferobj.h"
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#include "main/blit.h"
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#include "main/format_pack.h"
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#include "main/macros.h"
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#include "main/mtypes.h"
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#include "main/pack.h"
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#include "main/pbo.h"
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#include "main/readpix.h"
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#include "main/texformat.h"
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#include "main/teximage.h"
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#include "main/texstore.h"
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#include "main/glformats.h"
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#include "program/program.h"
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#include "program/prog_print.h"
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#include "program/prog_instruction.h"
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#include "st_atom.h"
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#include "st_atom_constbuf.h"
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#include "st_cb_drawpixels.h"
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#include "st_cb_readpixels.h"
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#include "st_cb_fbo.h"
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#include "st_context.h"
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#include "st_debug.h"
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#include "st_format.h"
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#include "st_program.h"
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#include "st_texture.h"
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#include "pipe/p_context.h"
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#include "pipe/p_defines.h"
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#include "tgsi/tgsi_ureg.h"
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#include "util/u_draw_quad.h"
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#include "util/u_format.h"
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#include "util/u_inlines.h"
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#include "util/u_math.h"
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#include "util/u_tile.h"
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#include "util/u_upload_mgr.h"
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#include "cso_cache/cso_context.h"
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/**
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* Create fragment program that does a TEX() instruction to get a Z and/or
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* stencil value value, then writes to FRAG_RESULT_DEPTH/FRAG_RESULT_STENCIL.
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* Used for glDrawPixels(GL_DEPTH_COMPONENT / GL_STENCIL_INDEX).
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* Pass fragment color through as-is.
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*
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* \return CSO of the fragment shader.
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*/
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static void *
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get_drawpix_z_stencil_program(struct st_context *st,
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GLboolean write_depth,
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GLboolean write_stencil)
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{
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struct ureg_program *ureg;
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struct ureg_src depth_sampler, stencil_sampler;
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struct ureg_src texcoord, color;
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struct ureg_dst out_color, out_depth, out_stencil;
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const GLuint shaderIndex = write_depth * 2 + write_stencil;
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void *cso;
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assert(shaderIndex < ARRAY_SIZE(st->drawpix.zs_shaders));
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if (st->drawpix.zs_shaders[shaderIndex]) {
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/* already have the proper shader */
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return st->drawpix.zs_shaders[shaderIndex];
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}
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ureg = ureg_create(TGSI_PROCESSOR_FRAGMENT);
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if (ureg == NULL)
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return NULL;
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ureg_property(ureg, TGSI_PROPERTY_FS_COLOR0_WRITES_ALL_CBUFS, TRUE);
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if (write_depth) {
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color = ureg_DECL_fs_input(ureg, TGSI_SEMANTIC_COLOR, 0,
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TGSI_INTERPOLATE_COLOR);
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out_color = ureg_DECL_output(ureg, TGSI_SEMANTIC_COLOR, 0);
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depth_sampler = ureg_DECL_sampler(ureg, 0);
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out_depth = ureg_DECL_output(ureg, TGSI_SEMANTIC_POSITION, 0);
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}
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if (write_stencil) {
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stencil_sampler = ureg_DECL_sampler(ureg, 1);
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out_stencil = ureg_DECL_output(ureg, TGSI_SEMANTIC_STENCIL, 0);
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}
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texcoord = ureg_DECL_fs_input(ureg,
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st->needs_texcoord_semantic ?
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TGSI_SEMANTIC_TEXCOORD :
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TGSI_SEMANTIC_GENERIC,
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0, TGSI_INTERPOLATE_LINEAR);
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if (write_depth) {
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ureg_TEX(ureg, ureg_writemask(out_depth, TGSI_WRITEMASK_Z),
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TGSI_TEXTURE_2D, texcoord, depth_sampler);
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ureg_MOV(ureg, out_color, color);
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}
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if (write_stencil)
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ureg_TEX(ureg, ureg_writemask(out_stencil, TGSI_WRITEMASK_Y),
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TGSI_TEXTURE_2D, texcoord, stencil_sampler);
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ureg_END(ureg);
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cso = ureg_create_shader_and_destroy(ureg, st->pipe);
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/* save the new shader */
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st->drawpix.zs_shaders[shaderIndex] = cso;
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return cso;
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}
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/**
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* Create a simple vertex shader that just passes through the
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* vertex position and texcoord (and optionally, color).
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*/
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static void *
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make_passthrough_vertex_shader(struct st_context *st,
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GLboolean passColor)
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{
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const unsigned texcoord_semantic = st->needs_texcoord_semantic ?
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TGSI_SEMANTIC_TEXCOORD : TGSI_SEMANTIC_GENERIC;
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if (!st->drawpix.vert_shaders[passColor]) {
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struct ureg_program *ureg = ureg_create( TGSI_PROCESSOR_VERTEX );
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if (ureg == NULL)
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return NULL;
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/* MOV result.pos, vertex.pos; */
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ureg_MOV(ureg,
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ureg_DECL_output( ureg, TGSI_SEMANTIC_POSITION, 0 ),
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ureg_DECL_vs_input( ureg, 0 ));
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/* MOV result.texcoord0, vertex.attr[1]; */
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ureg_MOV(ureg,
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ureg_DECL_output( ureg, texcoord_semantic, 0 ),
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ureg_DECL_vs_input( ureg, 1 ));
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if (passColor) {
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/* MOV result.color0, vertex.attr[2]; */
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ureg_MOV(ureg,
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ureg_DECL_output( ureg, TGSI_SEMANTIC_COLOR, 0 ),
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ureg_DECL_vs_input( ureg, 2 ));
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}
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ureg_END( ureg );
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st->drawpix.vert_shaders[passColor] =
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ureg_create_shader_and_destroy( ureg, st->pipe );
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}
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return st->drawpix.vert_shaders[passColor];
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}
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/**
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* Return a texture internalFormat for drawing/copying an image
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* of the given format and type.
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*/
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static GLenum
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internal_format(struct gl_context *ctx, GLenum format, GLenum type)
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{
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switch (format) {
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case GL_DEPTH_COMPONENT:
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switch (type) {
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case GL_UNSIGNED_SHORT:
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return GL_DEPTH_COMPONENT16;
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case GL_UNSIGNED_INT:
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return GL_DEPTH_COMPONENT32;
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case GL_FLOAT:
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if (ctx->Extensions.ARB_depth_buffer_float)
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return GL_DEPTH_COMPONENT32F;
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else
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return GL_DEPTH_COMPONENT;
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default:
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return GL_DEPTH_COMPONENT;
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}
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case GL_DEPTH_STENCIL:
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switch (type) {
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case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
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return GL_DEPTH32F_STENCIL8;
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case GL_UNSIGNED_INT_24_8:
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default:
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return GL_DEPTH24_STENCIL8;
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}
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case GL_STENCIL_INDEX:
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return GL_STENCIL_INDEX;
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default:
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if (_mesa_is_enum_format_integer(format)) {
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switch (type) {
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case GL_BYTE:
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return GL_RGBA8I;
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case GL_UNSIGNED_BYTE:
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return GL_RGBA8UI;
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case GL_SHORT:
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return GL_RGBA16I;
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case GL_UNSIGNED_SHORT:
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return GL_RGBA16UI;
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case GL_INT:
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return GL_RGBA32I;
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case GL_UNSIGNED_INT:
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return GL_RGBA32UI;
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default:
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assert(0 && "Unexpected type in internal_format()");
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return GL_RGBA_INTEGER;
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}
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}
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else {
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switch (type) {
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case GL_UNSIGNED_BYTE:
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case GL_UNSIGNED_INT_8_8_8_8:
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case GL_UNSIGNED_INT_8_8_8_8_REV:
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default:
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return GL_RGBA8;
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case GL_UNSIGNED_BYTE_3_3_2:
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case GL_UNSIGNED_BYTE_2_3_3_REV:
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return GL_R3_G3_B2;
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case GL_UNSIGNED_SHORT_4_4_4_4:
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case GL_UNSIGNED_SHORT_4_4_4_4_REV:
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return GL_RGBA4;
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case GL_UNSIGNED_SHORT_5_6_5:
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case GL_UNSIGNED_SHORT_5_6_5_REV:
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return GL_RGB565;
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case GL_UNSIGNED_SHORT_5_5_5_1:
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case GL_UNSIGNED_SHORT_1_5_5_5_REV:
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return GL_RGB5_A1;
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case GL_UNSIGNED_INT_10_10_10_2:
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case GL_UNSIGNED_INT_2_10_10_10_REV:
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return GL_RGB10_A2;
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case GL_UNSIGNED_SHORT:
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case GL_UNSIGNED_INT:
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return GL_RGBA16;
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case GL_BYTE:
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return
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ctx->Extensions.EXT_texture_snorm ? GL_RGBA8_SNORM : GL_RGBA8;
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case GL_SHORT:
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case GL_INT:
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return
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ctx->Extensions.EXT_texture_snorm ? GL_RGBA16_SNORM : GL_RGBA16;
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case GL_HALF_FLOAT_ARB:
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return
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ctx->Extensions.ARB_texture_float ? GL_RGBA16F :
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ctx->Extensions.EXT_texture_snorm ? GL_RGBA16_SNORM : GL_RGBA16;
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case GL_FLOAT:
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case GL_DOUBLE:
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return
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ctx->Extensions.ARB_texture_float ? GL_RGBA32F :
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ctx->Extensions.EXT_texture_snorm ? GL_RGBA16_SNORM : GL_RGBA16;
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case GL_UNSIGNED_INT_5_9_9_9_REV:
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assert(ctx->Extensions.EXT_texture_shared_exponent);
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return GL_RGB9_E5;
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case GL_UNSIGNED_INT_10F_11F_11F_REV:
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assert(ctx->Extensions.EXT_packed_float);
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return GL_R11F_G11F_B10F;
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}
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}
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}
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}
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/**
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* Create a temporary texture to hold an image of the given size.
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* If width, height are not POT and the driver only handles POT textures,
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* allocate the next larger size of texture that is POT.
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*/
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static struct pipe_resource *
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alloc_texture(struct st_context *st, GLsizei width, GLsizei height,
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enum pipe_format texFormat, unsigned bind)
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{
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struct pipe_resource *pt;
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pt = st_texture_create(st, st->internal_target, texFormat, 0,
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width, height, 1, 1, 0, bind);
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return pt;
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}
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/**
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* Make texture containing an image for glDrawPixels image.
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* If 'pixels' is NULL, leave the texture image data undefined.
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*/
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static struct pipe_resource *
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make_texture(struct st_context *st,
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GLsizei width, GLsizei height, GLenum format, GLenum type,
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const struct gl_pixelstore_attrib *unpack,
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const GLvoid *pixels)
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{
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struct gl_context *ctx = st->ctx;
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struct pipe_context *pipe = st->pipe;
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mesa_format mformat;
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struct pipe_resource *pt;
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enum pipe_format pipeFormat;
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GLenum baseInternalFormat;
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/* Choose a pixel format for the temp texture which will hold the
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* image to draw.
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*/
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pipeFormat = st_choose_matching_format(st, PIPE_BIND_SAMPLER_VIEW,
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format, type, unpack->SwapBytes);
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if (pipeFormat == PIPE_FORMAT_NONE) {
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/* Use the generic approach. */
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GLenum intFormat = internal_format(ctx, format, type);
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pipeFormat = st_choose_format(st, intFormat, format, type,
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PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW,
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FALSE);
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assert(pipeFormat != PIPE_FORMAT_NONE);
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}
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mformat = st_pipe_format_to_mesa_format(pipeFormat);
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baseInternalFormat = _mesa_get_format_base_format(mformat);
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pixels = _mesa_map_pbo_source(ctx, unpack, pixels);
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if (!pixels)
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return NULL;
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/* alloc temporary texture */
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pt = alloc_texture(st, width, height, pipeFormat, PIPE_BIND_SAMPLER_VIEW);
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if (!pt) {
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_mesa_unmap_pbo_source(ctx, unpack);
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return NULL;
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}
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{
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struct pipe_transfer *transfer;
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GLboolean success;
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GLubyte *dest;
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const GLbitfield imageTransferStateSave = ctx->_ImageTransferState;
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/* we'll do pixel transfer in a fragment shader */
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ctx->_ImageTransferState = 0x0;
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/* map texture transfer */
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dest = pipe_transfer_map(pipe, pt, 0, 0,
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PIPE_TRANSFER_WRITE, 0, 0,
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width, height, &transfer);
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/* Put image into texture transfer.
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* Note that the image is actually going to be upside down in
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* the texture. We deal with that with texcoords.
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*/
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success = _mesa_texstore(ctx, 2, /* dims */
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baseInternalFormat, /* baseInternalFormat */
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mformat, /* mesa_format */
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transfer->stride, /* dstRowStride, bytes */
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&dest, /* destSlices */
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width, height, 1, /* size */
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format, type, /* src format/type */
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pixels, /* data source */
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unpack);
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/* unmap */
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pipe_transfer_unmap(pipe, transfer);
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assert(success);
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/* restore */
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ctx->_ImageTransferState = imageTransferStateSave;
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}
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_mesa_unmap_pbo_source(ctx, unpack);
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return pt;
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}
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/**
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* Draw quad with texcoords and optional color.
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* Coords are gallium window coords with y=0=top.
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* \param color may be null
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* \param invertTex if true, flip texcoords vertically
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*/
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static void
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draw_quad(struct gl_context *ctx, GLfloat x0, GLfloat y0, GLfloat z,
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GLfloat x1, GLfloat y1, const GLfloat *color,
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GLboolean invertTex, GLfloat maxXcoord, GLfloat maxYcoord)
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{
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struct st_context *st = st_context(ctx);
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struct pipe_context *pipe = st->pipe;
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GLfloat (*verts)[3][4]; /* four verts, three attribs, XYZW */
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struct pipe_resource *buf = NULL;
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unsigned offset;
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u_upload_alloc(st->uploader, 0, 4 * sizeof(verts[0]), &offset,
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&buf, (void **) &verts);
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if (!buf) {
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return;
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}
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/* setup vertex data */
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{
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const struct gl_framebuffer *fb = st->ctx->DrawBuffer;
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const GLfloat fb_width = (GLfloat) fb->Width;
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const GLfloat fb_height = (GLfloat) fb->Height;
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const GLfloat clip_x0 = x0 / fb_width * 2.0f - 1.0f;
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const GLfloat clip_y0 = y0 / fb_height * 2.0f - 1.0f;
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const GLfloat clip_x1 = x1 / fb_width * 2.0f - 1.0f;
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const GLfloat clip_y1 = y1 / fb_height * 2.0f - 1.0f;
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const GLfloat sLeft = 0.0f, sRight = maxXcoord;
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const GLfloat tTop = invertTex ? maxYcoord : 0.0f;
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const GLfloat tBot = invertTex ? 0.0f : maxYcoord;
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GLuint i;
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/* upper-left */
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verts[0][0][0] = clip_x0; /* v[0].attr[0].x */
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verts[0][0][1] = clip_y0; /* v[0].attr[0].y */
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/* upper-right */
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verts[1][0][0] = clip_x1;
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verts[1][0][1] = clip_y0;
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/* lower-right */
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verts[2][0][0] = clip_x1;
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verts[2][0][1] = clip_y1;
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/* lower-left */
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verts[3][0][0] = clip_x0;
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verts[3][0][1] = clip_y1;
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verts[0][1][0] = sLeft; /* v[0].attr[1].S */
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verts[0][1][1] = tTop; /* v[0].attr[1].T */
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verts[1][1][0] = sRight;
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verts[1][1][1] = tTop;
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verts[2][1][0] = sRight;
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verts[2][1][1] = tBot;
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verts[3][1][0] = sLeft;
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verts[3][1][1] = tBot;
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/* same for all verts: */
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if (color) {
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for (i = 0; i < 4; i++) {
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verts[i][0][2] = z; /* v[i].attr[0].z */
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verts[i][0][3] = 1.0f; /* v[i].attr[0].w */
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verts[i][2][0] = color[0]; /* v[i].attr[2].r */
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verts[i][2][1] = color[1]; /* v[i].attr[2].g */
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|
verts[i][2][2] = color[2]; /* v[i].attr[2].b */
|
|
verts[i][2][3] = color[3]; /* v[i].attr[2].a */
|
|
verts[i][1][2] = 0.0f; /* v[i].attr[1].R */
|
|
verts[i][1][3] = 1.0f; /* v[i].attr[1].Q */
|
|
}
|
|
}
|
|
else {
|
|
for (i = 0; i < 4; i++) {
|
|
verts[i][0][2] = z; /*Z*/
|
|
verts[i][0][3] = 1.0f; /*W*/
|
|
verts[i][1][2] = 0.0f; /*R*/
|
|
verts[i][1][3] = 1.0f; /*Q*/
|
|
}
|
|
}
|
|
}
|
|
|
|
u_upload_unmap(st->uploader);
|
|
util_draw_vertex_buffer(pipe, st->cso_context, buf,
|
|
cso_get_aux_vertex_buffer_slot(st->cso_context),
|
|
offset,
|
|
PIPE_PRIM_QUADS,
|
|
4, /* verts */
|
|
3); /* attribs/vert */
|
|
pipe_resource_reference(&buf, NULL);
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
draw_textured_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,
|
|
GLsizei width, GLsizei height,
|
|
GLfloat zoomX, GLfloat zoomY,
|
|
struct pipe_sampler_view **sv,
|
|
int num_sampler_view,
|
|
void *driver_vp,
|
|
void *driver_fp,
|
|
struct st_fp_variant *fpv,
|
|
const GLfloat *color,
|
|
GLboolean invertTex,
|
|
GLboolean write_depth, GLboolean write_stencil)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct cso_context *cso = st->cso_context;
|
|
GLfloat x0, y0, x1, y1;
|
|
GLsizei maxSize;
|
|
boolean normalized = sv[0]->texture->target != PIPE_TEXTURE_RECT;
|
|
|
|
/* limit checks */
|
|
/* XXX if DrawPixels image is larger than max texture size, break
|
|
* it up into chunks.
|
|
*/
|
|
maxSize = 1 << (pipe->screen->get_param(pipe->screen,
|
|
PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
|
|
assert(width <= maxSize);
|
|
assert(height <= maxSize);
|
|
|
|
cso_save_rasterizer(cso);
|
|
cso_save_viewport(cso);
|
|
cso_save_fragment_samplers(cso);
|
|
cso_save_fragment_sampler_views(cso);
|
|
cso_save_fragment_shader(cso);
|
|
cso_save_stream_outputs(cso);
|
|
cso_save_vertex_shader(cso);
|
|
cso_save_tessctrl_shader(cso);
|
|
cso_save_tesseval_shader(cso);
|
|
cso_save_geometry_shader(cso);
|
|
cso_save_vertex_elements(cso);
|
|
cso_save_aux_vertex_buffer_slot(cso);
|
|
if (write_stencil) {
|
|
cso_save_depth_stencil_alpha(cso);
|
|
cso_save_blend(cso);
|
|
}
|
|
|
|
/* rasterizer state: just scissor */
|
|
{
|
|
struct pipe_rasterizer_state rasterizer;
|
|
memset(&rasterizer, 0, sizeof(rasterizer));
|
|
rasterizer.clamp_fragment_color = !st->clamp_frag_color_in_shader &&
|
|
ctx->Color._ClampFragmentColor;
|
|
rasterizer.half_pixel_center = 1;
|
|
rasterizer.bottom_edge_rule = 1;
|
|
rasterizer.depth_clip = !ctx->Transform.DepthClamp;
|
|
rasterizer.scissor = ctx->Scissor.EnableFlags;
|
|
cso_set_rasterizer(cso, &rasterizer);
|
|
}
|
|
|
|
if (write_stencil) {
|
|
/* Stencil writing bypasses the normal fragment pipeline to
|
|
* disable color writing and set stencil test to always pass.
|
|
*/
|
|
struct pipe_depth_stencil_alpha_state dsa;
|
|
struct pipe_blend_state blend;
|
|
|
|
/* depth/stencil */
|
|
memset(&dsa, 0, sizeof(dsa));
|
|
dsa.stencil[0].enabled = 1;
|
|
dsa.stencil[0].func = PIPE_FUNC_ALWAYS;
|
|
dsa.stencil[0].writemask = ctx->Stencil.WriteMask[0] & 0xff;
|
|
dsa.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
|
|
if (write_depth) {
|
|
/* writing depth+stencil: depth test always passes */
|
|
dsa.depth.enabled = 1;
|
|
dsa.depth.writemask = ctx->Depth.Mask;
|
|
dsa.depth.func = PIPE_FUNC_ALWAYS;
|
|
}
|
|
cso_set_depth_stencil_alpha(cso, &dsa);
|
|
|
|
/* blend (colormask) */
|
|
memset(&blend, 0, sizeof(blend));
|
|
cso_set_blend(cso, &blend);
|
|
}
|
|
|
|
/* fragment shader state: TEX lookup program */
|
|
cso_set_fragment_shader_handle(cso, driver_fp);
|
|
|
|
/* vertex shader state: position + texcoord pass-through */
|
|
cso_set_vertex_shader_handle(cso, driver_vp);
|
|
|
|
/* disable other shaders */
|
|
cso_set_tessctrl_shader_handle(cso, NULL);
|
|
cso_set_tesseval_shader_handle(cso, NULL);
|
|
cso_set_geometry_shader_handle(cso, NULL);
|
|
|
|
/* user samplers, plus the drawpix samplers */
|
|
{
|
|
struct pipe_sampler_state sampler;
|
|
|
|
memset(&sampler, 0, sizeof(sampler));
|
|
sampler.wrap_s = PIPE_TEX_WRAP_CLAMP;
|
|
sampler.wrap_t = PIPE_TEX_WRAP_CLAMP;
|
|
sampler.wrap_r = PIPE_TEX_WRAP_CLAMP;
|
|
sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
|
|
sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
|
|
sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
|
|
sampler.normalized_coords = normalized;
|
|
|
|
if (fpv) {
|
|
const struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
|
|
uint num = MAX2(MAX2(fpv->drawpix_sampler, fpv->pixelmap_sampler) + 1,
|
|
st->state.num_samplers[PIPE_SHADER_FRAGMENT]);
|
|
uint i;
|
|
|
|
for (i = 0; i < st->state.num_samplers[PIPE_SHADER_FRAGMENT]; i++)
|
|
samplers[i] = &st->state.samplers[PIPE_SHADER_FRAGMENT][i];
|
|
|
|
samplers[fpv->drawpix_sampler] = &sampler;
|
|
if (sv[1])
|
|
samplers[fpv->pixelmap_sampler] = &sampler;
|
|
|
|
cso_set_samplers(cso, PIPE_SHADER_FRAGMENT, num, samplers);
|
|
} else {
|
|
const struct pipe_sampler_state *samplers[2] = {&sampler, &sampler};
|
|
|
|
cso_set_samplers(cso, PIPE_SHADER_FRAGMENT, num_sampler_view, samplers);
|
|
}
|
|
}
|
|
|
|
/* viewport state: viewport matching window dims */
|
|
{
|
|
const float w = (float) ctx->DrawBuffer->Width;
|
|
const float h = (float) ctx->DrawBuffer->Height;
|
|
struct pipe_viewport_state vp;
|
|
vp.scale[0] = 0.5f * w;
|
|
vp.scale[1] = -0.5f * h;
|
|
vp.scale[2] = 0.5f;
|
|
vp.translate[0] = 0.5f * w;
|
|
vp.translate[1] = 0.5f * h;
|
|
vp.translate[2] = 0.5f;
|
|
cso_set_viewport(cso, &vp);
|
|
}
|
|
|
|
cso_set_vertex_elements(cso, 3, st->velems_util_draw);
|
|
cso_set_stream_outputs(st->cso_context, 0, NULL, NULL);
|
|
|
|
/* user textures, plus the drawpix textures */
|
|
if (fpv) {
|
|
struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
|
|
uint num = MAX2(MAX2(fpv->drawpix_sampler, fpv->pixelmap_sampler) + 1,
|
|
st->state.num_sampler_views[PIPE_SHADER_FRAGMENT]);
|
|
|
|
memcpy(sampler_views, st->state.sampler_views[PIPE_SHADER_FRAGMENT],
|
|
sizeof(sampler_views));
|
|
|
|
sampler_views[fpv->drawpix_sampler] = sv[0];
|
|
if (sv[1])
|
|
sampler_views[fpv->pixelmap_sampler] = sv[1];
|
|
cso_set_sampler_views(cso, PIPE_SHADER_FRAGMENT, num, sampler_views);
|
|
} else
|
|
cso_set_sampler_views(cso, PIPE_SHADER_FRAGMENT, num_sampler_view, sv);
|
|
|
|
/* Compute Gallium window coords (y=0=top) with pixel zoom.
|
|
* Recall that these coords are transformed by the current
|
|
* vertex shader and viewport transformation.
|
|
*/
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM) {
|
|
y = ctx->DrawBuffer->Height - (int) (y + height * ctx->Pixel.ZoomY);
|
|
invertTex = !invertTex;
|
|
}
|
|
|
|
x0 = (GLfloat) x;
|
|
x1 = x + width * ctx->Pixel.ZoomX;
|
|
y0 = (GLfloat) y;
|
|
y1 = y + height * ctx->Pixel.ZoomY;
|
|
|
|
/* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
|
|
z = z * 2.0f - 1.0f;
|
|
|
|
draw_quad(ctx, x0, y0, z, x1, y1, color, invertTex,
|
|
normalized ? ((GLfloat) width / sv[0]->texture->width0) : (GLfloat)width,
|
|
normalized ? ((GLfloat) height / sv[0]->texture->height0) : (GLfloat)height);
|
|
|
|
/* restore state */
|
|
cso_restore_rasterizer(cso);
|
|
cso_restore_viewport(cso);
|
|
cso_restore_fragment_samplers(cso);
|
|
cso_restore_fragment_sampler_views(cso);
|
|
cso_restore_fragment_shader(cso);
|
|
cso_restore_vertex_shader(cso);
|
|
cso_restore_tessctrl_shader(cso);
|
|
cso_restore_tesseval_shader(cso);
|
|
cso_restore_geometry_shader(cso);
|
|
cso_restore_vertex_elements(cso);
|
|
cso_restore_aux_vertex_buffer_slot(cso);
|
|
cso_restore_stream_outputs(cso);
|
|
if (write_stencil) {
|
|
cso_restore_depth_stencil_alpha(cso);
|
|
cso_restore_blend(cso);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Software fallback to do glDrawPixels(GL_STENCIL_INDEX) when we
|
|
* can't use a fragment shader to write stencil values.
|
|
*/
|
|
static void
|
|
draw_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
|
|
GLsizei width, GLsizei height, GLenum format, GLenum type,
|
|
const struct gl_pixelstore_attrib *unpack,
|
|
const GLvoid *pixels)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct st_renderbuffer *strb;
|
|
enum pipe_transfer_usage usage;
|
|
struct pipe_transfer *pt;
|
|
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
|
|
ubyte *stmap;
|
|
struct gl_pixelstore_attrib clippedUnpack = *unpack;
|
|
GLubyte *sValues;
|
|
GLuint *zValues;
|
|
|
|
if (!zoom) {
|
|
if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height,
|
|
&clippedUnpack)) {
|
|
/* totally clipped */
|
|
return;
|
|
}
|
|
}
|
|
|
|
strb = st_renderbuffer(ctx->DrawBuffer->
|
|
Attachment[BUFFER_STENCIL].Renderbuffer);
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
y = ctx->DrawBuffer->Height - y - height;
|
|
}
|
|
|
|
if (format == GL_STENCIL_INDEX &&
|
|
_mesa_is_format_packed_depth_stencil(strb->Base.Format)) {
|
|
/* writing stencil to a combined depth+stencil buffer */
|
|
usage = PIPE_TRANSFER_READ_WRITE;
|
|
}
|
|
else {
|
|
usage = PIPE_TRANSFER_WRITE;
|
|
}
|
|
|
|
stmap = pipe_transfer_map(pipe, strb->texture,
|
|
strb->surface->u.tex.level,
|
|
strb->surface->u.tex.first_layer,
|
|
usage, x, y,
|
|
width, height, &pt);
|
|
|
|
pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels);
|
|
assert(pixels);
|
|
|
|
sValues = malloc(width * sizeof(GLubyte));
|
|
zValues = malloc(width * sizeof(GLuint));
|
|
|
|
if (sValues && zValues) {
|
|
GLint row;
|
|
for (row = 0; row < height; row++) {
|
|
GLfloat *zValuesFloat = (GLfloat*)zValues;
|
|
GLenum destType = GL_UNSIGNED_BYTE;
|
|
const GLvoid *source = _mesa_image_address2d(&clippedUnpack, pixels,
|
|
width, height,
|
|
format, type,
|
|
row, 0);
|
|
_mesa_unpack_stencil_span(ctx, width, destType, sValues,
|
|
type, source, &clippedUnpack,
|
|
ctx->_ImageTransferState);
|
|
|
|
if (format == GL_DEPTH_STENCIL) {
|
|
GLenum ztype =
|
|
pt->resource->format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT ?
|
|
GL_FLOAT : GL_UNSIGNED_INT;
|
|
|
|
_mesa_unpack_depth_span(ctx, width, ztype, zValues,
|
|
(1 << 24) - 1, type, source,
|
|
&clippedUnpack);
|
|
}
|
|
|
|
if (zoom) {
|
|
_mesa_problem(ctx, "Gallium glDrawPixels(GL_STENCIL) with "
|
|
"zoom not complete");
|
|
}
|
|
|
|
{
|
|
GLint spanY;
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
spanY = height - row - 1;
|
|
}
|
|
else {
|
|
spanY = row;
|
|
}
|
|
|
|
/* now pack the stencil (and Z) values in the dest format */
|
|
switch (pt->resource->format) {
|
|
case PIPE_FORMAT_S8_UINT:
|
|
{
|
|
ubyte *dest = stmap + spanY * pt->stride;
|
|
assert(usage == PIPE_TRANSFER_WRITE);
|
|
memcpy(dest, sValues, width);
|
|
}
|
|
break;
|
|
case PIPE_FORMAT_Z24_UNORM_S8_UINT:
|
|
if (format == GL_DEPTH_STENCIL) {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_TRANSFER_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k] = zValues[k] | (sValues[k] << 24);
|
|
}
|
|
}
|
|
else {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_TRANSFER_READ_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24);
|
|
}
|
|
}
|
|
break;
|
|
case PIPE_FORMAT_S8_UINT_Z24_UNORM:
|
|
if (format == GL_DEPTH_STENCIL) {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_TRANSFER_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff);
|
|
}
|
|
}
|
|
else {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_TRANSFER_READ_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff);
|
|
}
|
|
}
|
|
break;
|
|
case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT:
|
|
if (format == GL_DEPTH_STENCIL) {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLfloat *destf = (GLfloat*)dest;
|
|
GLint k;
|
|
assert(usage == PIPE_TRANSFER_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
destf[k*2] = zValuesFloat[k];
|
|
dest[k*2+1] = sValues[k] & 0xff;
|
|
}
|
|
}
|
|
else {
|
|
uint *dest = (uint *) (stmap + spanY * pt->stride);
|
|
GLint k;
|
|
assert(usage == PIPE_TRANSFER_READ_WRITE);
|
|
for (k = 0; k < width; k++) {
|
|
dest[k*2+1] = sValues[k] & 0xff;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels()");
|
|
}
|
|
|
|
free(sValues);
|
|
free(zValues);
|
|
|
|
_mesa_unmap_pbo_source(ctx, &clippedUnpack);
|
|
|
|
/* unmap the stencil buffer */
|
|
pipe_transfer_unmap(pipe, pt);
|
|
}
|
|
|
|
|
|
/**
|
|
* Get fragment program variant for a glDrawPixels or glCopyPixels
|
|
* command for RGBA data.
|
|
*/
|
|
static struct st_fp_variant *
|
|
get_color_fp_variant(struct st_context *st)
|
|
{
|
|
struct gl_context *ctx = st->ctx;
|
|
struct st_fp_variant_key key;
|
|
struct st_fp_variant *fpv;
|
|
|
|
memset(&key, 0, sizeof(key));
|
|
|
|
key.st = st->has_shareable_shaders ? NULL : st;
|
|
key.drawpixels = 1;
|
|
key.scaleAndBias = (ctx->Pixel.RedBias != 0.0 ||
|
|
ctx->Pixel.RedScale != 1.0 ||
|
|
ctx->Pixel.GreenBias != 0.0 ||
|
|
ctx->Pixel.GreenScale != 1.0 ||
|
|
ctx->Pixel.BlueBias != 0.0 ||
|
|
ctx->Pixel.BlueScale != 1.0 ||
|
|
ctx->Pixel.AlphaBias != 0.0 ||
|
|
ctx->Pixel.AlphaScale != 1.0);
|
|
key.pixelMaps = ctx->Pixel.MapColorFlag;
|
|
key.clamp_color = st->clamp_frag_color_in_shader &&
|
|
st->ctx->Color._ClampFragmentColor;
|
|
|
|
fpv = st_get_fp_variant(st, st->fp, &key);
|
|
|
|
return fpv;
|
|
}
|
|
|
|
|
|
/**
|
|
* Clamp glDrawPixels width and height to the maximum texture size.
|
|
*/
|
|
static void
|
|
clamp_size(struct pipe_context *pipe, GLsizei *width, GLsizei *height,
|
|
struct gl_pixelstore_attrib *unpack)
|
|
{
|
|
const int maxSize =
|
|
1 << (pipe->screen->get_param(pipe->screen,
|
|
PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
|
|
|
|
if (*width > maxSize) {
|
|
if (unpack->RowLength == 0)
|
|
unpack->RowLength = *width;
|
|
*width = maxSize;
|
|
}
|
|
if (*height > maxSize) {
|
|
*height = maxSize;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Called via ctx->Driver.DrawPixels()
|
|
*/
|
|
static void
|
|
st_DrawPixels(struct gl_context *ctx, GLint x, GLint y,
|
|
GLsizei width, GLsizei height,
|
|
GLenum format, GLenum type,
|
|
const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels)
|
|
{
|
|
void *driver_vp, *driver_fp;
|
|
struct st_context *st = st_context(ctx);
|
|
const GLfloat *color;
|
|
struct pipe_context *pipe = st->pipe;
|
|
GLboolean write_stencil = GL_FALSE, write_depth = GL_FALSE;
|
|
struct pipe_sampler_view *sv[2] = { NULL };
|
|
int num_sampler_view = 1;
|
|
struct gl_pixelstore_attrib clippedUnpack;
|
|
struct st_fp_variant *fpv = NULL;
|
|
|
|
/* Mesa state should be up to date by now */
|
|
assert(ctx->NewState == 0x0);
|
|
|
|
st_validate_state(st);
|
|
|
|
/* Limit the size of the glDrawPixels to the max texture size.
|
|
* Strictly speaking, that's not correct but since we don't handle
|
|
* larger images yet, this is better than crashing.
|
|
*/
|
|
clippedUnpack = *unpack;
|
|
unpack = &clippedUnpack;
|
|
clamp_size(st->pipe, &width, &height, &clippedUnpack);
|
|
|
|
if (format == GL_DEPTH_STENCIL)
|
|
write_stencil = write_depth = GL_TRUE;
|
|
else if (format == GL_STENCIL_INDEX)
|
|
write_stencil = GL_TRUE;
|
|
else if (format == GL_DEPTH_COMPONENT)
|
|
write_depth = GL_TRUE;
|
|
|
|
if (write_stencil &&
|
|
!pipe->screen->get_param(pipe->screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) {
|
|
/* software fallback */
|
|
draw_stencil_pixels(ctx, x, y, width, height, format, type,
|
|
unpack, pixels);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Get vertex/fragment shaders
|
|
*/
|
|
if (write_depth || write_stencil) {
|
|
driver_fp = get_drawpix_z_stencil_program(st, write_depth,
|
|
write_stencil);
|
|
driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);
|
|
color = ctx->Current.RasterColor;
|
|
}
|
|
else {
|
|
fpv = get_color_fp_variant(st);
|
|
|
|
driver_fp = fpv->driver_shader;
|
|
driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);
|
|
|
|
color = NULL;
|
|
if (ctx->Pixel.MapColorFlag) {
|
|
pipe_sampler_view_reference(&sv[1],
|
|
st->pixel_xfer.pixelmap_sampler_view);
|
|
num_sampler_view++;
|
|
}
|
|
|
|
/* update fragment program constants */
|
|
st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);
|
|
}
|
|
|
|
/* draw with textured quad */
|
|
{
|
|
struct pipe_resource *pt
|
|
= make_texture(st, width, height, format, type, unpack, pixels);
|
|
if (pt) {
|
|
sv[0] = st_create_texture_sampler_view(st->pipe, pt);
|
|
|
|
if (sv[0]) {
|
|
/* Create a second sampler view to read stencil.
|
|
* The stencil is written using the shader stencil export
|
|
* functionality. */
|
|
if (write_stencil) {
|
|
enum pipe_format stencil_format =
|
|
util_format_stencil_only(pt->format);
|
|
/* we should not be doing pixel map/transfer (see above) */
|
|
assert(num_sampler_view == 1);
|
|
sv[1] = st_create_texture_sampler_view_format(st->pipe, pt,
|
|
stencil_format);
|
|
num_sampler_view++;
|
|
}
|
|
|
|
draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2],
|
|
width, height,
|
|
ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
|
|
sv,
|
|
num_sampler_view,
|
|
driver_vp,
|
|
driver_fp, fpv,
|
|
color, GL_FALSE, write_depth, write_stencil);
|
|
pipe_sampler_view_reference(&sv[0], NULL);
|
|
if (num_sampler_view > 1)
|
|
pipe_sampler_view_reference(&sv[1], NULL);
|
|
}
|
|
pipe_resource_reference(&pt, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Software fallback for glCopyPixels(GL_STENCIL).
|
|
*/
|
|
static void
|
|
copy_stencil_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,
|
|
GLsizei width, GLsizei height,
|
|
GLint dstx, GLint dsty)
|
|
{
|
|
struct st_renderbuffer *rbDraw;
|
|
struct pipe_context *pipe = st_context(ctx)->pipe;
|
|
enum pipe_transfer_usage usage;
|
|
struct pipe_transfer *ptDraw;
|
|
ubyte *drawMap;
|
|
ubyte *buffer;
|
|
int i;
|
|
|
|
buffer = malloc(width * height * sizeof(ubyte));
|
|
if (!buffer) {
|
|
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels(stencil)");
|
|
return;
|
|
}
|
|
|
|
/* Get the dest renderbuffer */
|
|
rbDraw = st_renderbuffer(ctx->DrawBuffer->
|
|
Attachment[BUFFER_STENCIL].Renderbuffer);
|
|
|
|
/* this will do stencil pixel transfer ops */
|
|
_mesa_readpixels(ctx, srcx, srcy, width, height,
|
|
GL_STENCIL_INDEX, GL_UNSIGNED_BYTE,
|
|
&ctx->DefaultPacking, buffer);
|
|
|
|
if (0) {
|
|
/* debug code: dump stencil values */
|
|
GLint row, col;
|
|
for (row = 0; row < height; row++) {
|
|
printf("%3d: ", row);
|
|
for (col = 0; col < width; col++) {
|
|
printf("%02x ", buffer[col + row * width]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
if (_mesa_is_format_packed_depth_stencil(rbDraw->Base.Format))
|
|
usage = PIPE_TRANSFER_READ_WRITE;
|
|
else
|
|
usage = PIPE_TRANSFER_WRITE;
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
dsty = rbDraw->Base.Height - dsty - height;
|
|
}
|
|
|
|
assert(util_format_get_blockwidth(rbDraw->texture->format) == 1);
|
|
assert(util_format_get_blockheight(rbDraw->texture->format) == 1);
|
|
|
|
/* map the stencil buffer */
|
|
drawMap = pipe_transfer_map(pipe,
|
|
rbDraw->texture,
|
|
rbDraw->surface->u.tex.level,
|
|
rbDraw->surface->u.tex.first_layer,
|
|
usage, dstx, dsty,
|
|
width, height, &ptDraw);
|
|
|
|
/* draw */
|
|
/* XXX PixelZoom not handled yet */
|
|
for (i = 0; i < height; i++) {
|
|
ubyte *dst;
|
|
const ubyte *src;
|
|
int y;
|
|
|
|
y = i;
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
y = height - y - 1;
|
|
}
|
|
|
|
dst = drawMap + y * ptDraw->stride;
|
|
src = buffer + i * width;
|
|
|
|
_mesa_pack_ubyte_stencil_row(rbDraw->Base.Format, width, src, dst);
|
|
}
|
|
|
|
free(buffer);
|
|
|
|
/* unmap the stencil buffer */
|
|
pipe_transfer_unmap(pipe, ptDraw);
|
|
}
|
|
|
|
|
|
/**
|
|
* Return renderbuffer to use for reading color pixels for glCopyPixels
|
|
*/
|
|
static struct st_renderbuffer *
|
|
st_get_color_read_renderbuffer(struct gl_context *ctx)
|
|
{
|
|
struct gl_framebuffer *fb = ctx->ReadBuffer;
|
|
struct st_renderbuffer *strb =
|
|
st_renderbuffer(fb->_ColorReadBuffer);
|
|
|
|
return strb;
|
|
}
|
|
|
|
|
|
/**
|
|
* Try to do a glCopyPixels for simple cases with a blit by calling
|
|
* pipe->blit().
|
|
*
|
|
* We can do this when we're copying color pixels (depth/stencil
|
|
* eventually) with no pixel zoom, no pixel transfer ops, no
|
|
* per-fragment ops, and the src/dest regions don't overlap.
|
|
*/
|
|
static GLboolean
|
|
blit_copy_pixels(struct gl_context *ctx, GLint srcx, GLint srcy,
|
|
GLsizei width, GLsizei height,
|
|
GLint dstx, GLint dsty, GLenum type)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct pipe_screen *screen = pipe->screen;
|
|
struct gl_pixelstore_attrib pack, unpack;
|
|
GLint readX, readY, readW, readH, drawX, drawY, drawW, drawH;
|
|
|
|
if (type == GL_COLOR &&
|
|
ctx->Pixel.ZoomX == 1.0 &&
|
|
ctx->Pixel.ZoomY == 1.0 &&
|
|
ctx->_ImageTransferState == 0x0 &&
|
|
!ctx->Color.BlendEnabled &&
|
|
!ctx->Color.AlphaEnabled &&
|
|
!ctx->Depth.Test &&
|
|
!ctx->Fog.Enabled &&
|
|
!ctx->Stencil.Enabled &&
|
|
!ctx->FragmentProgram.Enabled &&
|
|
!ctx->VertexProgram.Enabled &&
|
|
!ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT] &&
|
|
ctx->DrawBuffer->_NumColorDrawBuffers == 1 &&
|
|
!ctx->Query.CondRenderQuery &&
|
|
!ctx->Query.CurrentOcclusionObject) {
|
|
struct st_renderbuffer *rbRead, *rbDraw;
|
|
|
|
/*
|
|
* Clip the read region against the src buffer bounds.
|
|
* We'll still allocate a temporary buffer/texture for the original
|
|
* src region size but we'll only read the region which is on-screen.
|
|
* This may mean that we draw garbage pixels into the dest region, but
|
|
* that's expected.
|
|
*/
|
|
readX = srcx;
|
|
readY = srcy;
|
|
readW = width;
|
|
readH = height;
|
|
pack = ctx->DefaultPacking;
|
|
if (!_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack))
|
|
return GL_TRUE; /* all done */
|
|
|
|
/* clip against dest buffer bounds and scissor box */
|
|
drawX = dstx + pack.SkipPixels;
|
|
drawY = dsty + pack.SkipRows;
|
|
unpack = pack;
|
|
if (!_mesa_clip_drawpixels(ctx, &drawX, &drawY, &readW, &readH, &unpack))
|
|
return GL_TRUE; /* all done */
|
|
|
|
readX = readX - pack.SkipPixels + unpack.SkipPixels;
|
|
readY = readY - pack.SkipRows + unpack.SkipRows;
|
|
|
|
drawW = readW;
|
|
drawH = readH;
|
|
|
|
rbRead = st_get_color_read_renderbuffer(ctx);
|
|
rbDraw = st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]);
|
|
|
|
/* Flip src/dst position depending on the orientation of buffers. */
|
|
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
|
|
readY = rbRead->Base.Height - readY;
|
|
readH = -readH;
|
|
}
|
|
|
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
|
|
/* We can't flip the destination for pipe->blit, so we only adjust
|
|
* its position and flip the source.
|
|
*/
|
|
drawY = rbDraw->Base.Height - drawY - drawH;
|
|
readY += readH;
|
|
readH = -readH;
|
|
}
|
|
|
|
if (rbRead != rbDraw ||
|
|
!_mesa_regions_overlap(readX, readY, readX + readW, readY + readH,
|
|
drawX, drawY, drawX + drawW, drawY + drawH)) {
|
|
struct pipe_blit_info blit;
|
|
|
|
memset(&blit, 0, sizeof(blit));
|
|
blit.src.resource = rbRead->texture;
|
|
blit.src.level = rbRead->surface->u.tex.level;
|
|
blit.src.format = rbRead->texture->format;
|
|
blit.src.box.x = readX;
|
|
blit.src.box.y = readY;
|
|
blit.src.box.z = rbRead->surface->u.tex.first_layer;
|
|
blit.src.box.width = readW;
|
|
blit.src.box.height = readH;
|
|
blit.src.box.depth = 1;
|
|
blit.dst.resource = rbDraw->texture;
|
|
blit.dst.level = rbDraw->surface->u.tex.level;
|
|
blit.dst.format = rbDraw->texture->format;
|
|
blit.dst.box.x = drawX;
|
|
blit.dst.box.y = drawY;
|
|
blit.dst.box.z = rbDraw->surface->u.tex.first_layer;
|
|
blit.dst.box.width = drawW;
|
|
blit.dst.box.height = drawH;
|
|
blit.dst.box.depth = 1;
|
|
blit.mask = PIPE_MASK_RGBA;
|
|
blit.filter = PIPE_TEX_FILTER_NEAREST;
|
|
|
|
if (screen->is_format_supported(screen, blit.src.format,
|
|
blit.src.resource->target,
|
|
blit.src.resource->nr_samples,
|
|
PIPE_BIND_SAMPLER_VIEW) &&
|
|
screen->is_format_supported(screen, blit.dst.format,
|
|
blit.dst.resource->target,
|
|
blit.dst.resource->nr_samples,
|
|
PIPE_BIND_RENDER_TARGET)) {
|
|
pipe->blit(pipe, &blit);
|
|
return GL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return GL_FALSE;
|
|
}
|
|
|
|
|
|
static void
|
|
st_CopyPixels(struct gl_context *ctx, GLint srcx, GLint srcy,
|
|
GLsizei width, GLsizei height,
|
|
GLint dstx, GLint dsty, GLenum type)
|
|
{
|
|
struct st_context *st = st_context(ctx);
|
|
struct pipe_context *pipe = st->pipe;
|
|
struct pipe_screen *screen = pipe->screen;
|
|
struct st_renderbuffer *rbRead;
|
|
void *driver_vp, *driver_fp;
|
|
struct pipe_resource *pt;
|
|
struct pipe_sampler_view *sv[2] = { NULL };
|
|
struct st_fp_variant *fpv = NULL;
|
|
int num_sampler_view = 1;
|
|
GLfloat *color;
|
|
enum pipe_format srcFormat;
|
|
unsigned srcBind;
|
|
GLboolean invertTex = GL_FALSE;
|
|
GLint readX, readY, readW, readH;
|
|
struct gl_pixelstore_attrib pack = ctx->DefaultPacking;
|
|
|
|
st_validate_state(st);
|
|
|
|
if (type == GL_DEPTH_STENCIL) {
|
|
/* XXX make this more efficient */
|
|
st_CopyPixels(ctx, srcx, srcy, width, height, dstx, dsty, GL_STENCIL);
|
|
st_CopyPixels(ctx, srcx, srcy, width, height, dstx, dsty, GL_DEPTH);
|
|
return;
|
|
}
|
|
|
|
if (type == GL_STENCIL) {
|
|
/* can't use texturing to do stencil */
|
|
copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty);
|
|
return;
|
|
}
|
|
|
|
if (blit_copy_pixels(ctx, srcx, srcy, width, height, dstx, dsty, type))
|
|
return;
|
|
|
|
/*
|
|
* The subsequent code implements glCopyPixels by copying the source
|
|
* pixels into a temporary texture that's then applied to a textured quad.
|
|
* When we draw the textured quad, all the usual per-fragment operations
|
|
* are handled.
|
|
*/
|
|
|
|
|
|
/*
|
|
* Get vertex/fragment shaders
|
|
*/
|
|
if (type == GL_COLOR) {
|
|
fpv = get_color_fp_variant(st);
|
|
|
|
rbRead = st_get_color_read_renderbuffer(ctx);
|
|
color = NULL;
|
|
|
|
driver_fp = fpv->driver_shader;
|
|
driver_vp = make_passthrough_vertex_shader(st, GL_FALSE);
|
|
|
|
if (ctx->Pixel.MapColorFlag) {
|
|
pipe_sampler_view_reference(&sv[1],
|
|
st->pixel_xfer.pixelmap_sampler_view);
|
|
num_sampler_view++;
|
|
}
|
|
|
|
/* update fragment program constants */
|
|
st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT);
|
|
}
|
|
else {
|
|
assert(type == GL_DEPTH);
|
|
rbRead = st_renderbuffer(ctx->ReadBuffer->
|
|
Attachment[BUFFER_DEPTH].Renderbuffer);
|
|
color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];
|
|
|
|
driver_fp = get_drawpix_z_stencil_program(st, GL_TRUE, GL_FALSE);
|
|
driver_vp = make_passthrough_vertex_shader(st, GL_TRUE);
|
|
}
|
|
|
|
/* Choose the format for the temporary texture. */
|
|
srcFormat = rbRead->texture->format;
|
|
srcBind = PIPE_BIND_SAMPLER_VIEW |
|
|
(type == GL_COLOR ? PIPE_BIND_RENDER_TARGET : PIPE_BIND_DEPTH_STENCIL);
|
|
|
|
if (!screen->is_format_supported(screen, srcFormat, st->internal_target, 0,
|
|
srcBind)) {
|
|
/* srcFormat is non-renderable. Find a compatible renderable format. */
|
|
if (type == GL_DEPTH) {
|
|
srcFormat = st_choose_format(st, GL_DEPTH_COMPONENT, GL_NONE,
|
|
GL_NONE, st->internal_target, 0,
|
|
srcBind, FALSE);
|
|
}
|
|
else {
|
|
assert(type == GL_COLOR);
|
|
|
|
if (util_format_is_float(srcFormat)) {
|
|
srcFormat = st_choose_format(st, GL_RGBA32F, GL_NONE,
|
|
GL_NONE, st->internal_target, 0,
|
|
srcBind, FALSE);
|
|
}
|
|
else if (util_format_is_pure_sint(srcFormat)) {
|
|
srcFormat = st_choose_format(st, GL_RGBA32I, GL_NONE,
|
|
GL_NONE, st->internal_target, 0,
|
|
srcBind, FALSE);
|
|
}
|
|
else if (util_format_is_pure_uint(srcFormat)) {
|
|
srcFormat = st_choose_format(st, GL_RGBA32UI, GL_NONE,
|
|
GL_NONE, st->internal_target, 0,
|
|
srcBind, FALSE);
|
|
}
|
|
else if (util_format_is_snorm(srcFormat)) {
|
|
srcFormat = st_choose_format(st, GL_RGBA16_SNORM, GL_NONE,
|
|
GL_NONE, st->internal_target, 0,
|
|
srcBind, FALSE);
|
|
}
|
|
else {
|
|
srcFormat = st_choose_format(st, GL_RGBA, GL_NONE,
|
|
GL_NONE, st->internal_target, 0,
|
|
srcBind, FALSE);
|
|
}
|
|
}
|
|
|
|
if (srcFormat == PIPE_FORMAT_NONE) {
|
|
assert(0 && "cannot choose a format for src of CopyPixels");
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Invert src region if needed */
|
|
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) {
|
|
srcy = ctx->ReadBuffer->Height - srcy - height;
|
|
invertTex = !invertTex;
|
|
}
|
|
|
|
/* Clip the read region against the src buffer bounds.
|
|
* We'll still allocate a temporary buffer/texture for the original
|
|
* src region size but we'll only read the region which is on-screen.
|
|
* This may mean that we draw garbage pixels into the dest region, but
|
|
* that's expected.
|
|
*/
|
|
readX = srcx;
|
|
readY = srcy;
|
|
readW = width;
|
|
readH = height;
|
|
if (!_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack)) {
|
|
/* The source region is completely out of bounds. Do nothing.
|
|
* The GL spec says "Results of copies from outside the window,
|
|
* or from regions of the window that are not exposed, are
|
|
* hardware dependent and undefined."
|
|
*/
|
|
return;
|
|
}
|
|
|
|
readW = MAX2(0, readW);
|
|
readH = MAX2(0, readH);
|
|
|
|
/* Allocate the temporary texture. */
|
|
pt = alloc_texture(st, width, height, srcFormat, srcBind);
|
|
if (!pt)
|
|
return;
|
|
|
|
sv[0] = st_create_texture_sampler_view(st->pipe, pt);
|
|
if (!sv[0]) {
|
|
pipe_resource_reference(&pt, NULL);
|
|
return;
|
|
}
|
|
|
|
/* Copy the src region to the temporary texture. */
|
|
{
|
|
struct pipe_blit_info blit;
|
|
|
|
memset(&blit, 0, sizeof(blit));
|
|
blit.src.resource = rbRead->texture;
|
|
blit.src.level = rbRead->surface->u.tex.level;
|
|
blit.src.format = rbRead->texture->format;
|
|
blit.src.box.x = readX;
|
|
blit.src.box.y = readY;
|
|
blit.src.box.z = rbRead->surface->u.tex.first_layer;
|
|
blit.src.box.width = readW;
|
|
blit.src.box.height = readH;
|
|
blit.src.box.depth = 1;
|
|
blit.dst.resource = pt;
|
|
blit.dst.level = 0;
|
|
blit.dst.format = pt->format;
|
|
blit.dst.box.x = pack.SkipPixels;
|
|
blit.dst.box.y = pack.SkipRows;
|
|
blit.dst.box.z = 0;
|
|
blit.dst.box.width = readW;
|
|
blit.dst.box.height = readH;
|
|
blit.dst.box.depth = 1;
|
|
blit.mask = util_format_get_mask(pt->format) & ~PIPE_MASK_S;
|
|
blit.filter = PIPE_TEX_FILTER_NEAREST;
|
|
|
|
pipe->blit(pipe, &blit);
|
|
}
|
|
|
|
/* OK, the texture 'pt' contains the src image/pixels. Now draw a
|
|
* textured quad with that texture.
|
|
*/
|
|
draw_textured_quad(ctx, dstx, dsty, ctx->Current.RasterPos[2],
|
|
width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
|
|
sv,
|
|
num_sampler_view,
|
|
driver_vp,
|
|
driver_fp, fpv,
|
|
color, invertTex, GL_FALSE, GL_FALSE);
|
|
|
|
pipe_resource_reference(&pt, NULL);
|
|
pipe_sampler_view_reference(&sv[0], NULL);
|
|
}
|
|
|
|
|
|
|
|
void st_init_drawpixels_functions(struct dd_function_table *functions)
|
|
{
|
|
functions->DrawPixels = st_DrawPixels;
|
|
functions->CopyPixels = st_CopyPixels;
|
|
}
|
|
|
|
|
|
void
|
|
st_destroy_drawpix(struct st_context *st)
|
|
{
|
|
GLuint i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(st->drawpix.zs_shaders); i++) {
|
|
if (st->drawpix.zs_shaders[i])
|
|
cso_delete_fragment_shader(st->cso_context,
|
|
st->drawpix.zs_shaders[i]);
|
|
}
|
|
|
|
if (st->drawpix.vert_shaders[0])
|
|
cso_delete_vertex_shader(st->cso_context, st->drawpix.vert_shaders[0]);
|
|
if (st->drawpix.vert_shaders[1])
|
|
cso_delete_vertex_shader(st->cso_context, st->drawpix.vert_shaders[1]);
|
|
}
|