[Mesa-dev] [PATCH 03/11] meta: Move glBlitFramebuffer() to a separate file.
Eric Anholt
eric at anholt.net
Wed Feb 5 17:20:06 PST 2014
---
src/mesa/Makefile.sources | 1 +
src/mesa/drivers/common/meta.c | 608 +-------------------------------
src/mesa/drivers/common/meta.h | 3 +
src/mesa/drivers/common/meta_blit.c | 675 ++++++++++++++++++++++++++++++++++++
4 files changed, 680 insertions(+), 607 deletions(-)
create mode 100644 src/mesa/drivers/common/meta_blit.c
diff --git a/src/mesa/Makefile.sources b/src/mesa/Makefile.sources
index bd02d3e..1ce94de 100644
--- a/src/mesa/Makefile.sources
+++ b/src/mesa/Makefile.sources
@@ -319,6 +319,7 @@ SPARC_FILES = \
COMMON_DRIVER_FILES = \
$(SRCDIR)drivers/common/driverfuncs.c \
+ $(SRCDIR)drivers/common/meta_blit.c \
$(SRCDIR)drivers/common/meta.c
diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index e2321eb..33ea67f 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -82,7 +82,6 @@
/** Return offset in bytes of the field within a vertex struct */
#define OFFSET(FIELD) ((void *) offsetof(struct vertex, FIELD))
-static void meta_glsl_blit_cleanup(struct blit_state *blit);
static void cleanup_temp_texture(struct temp_texture *tex);
static void meta_glsl_clear_cleanup(struct clear_state *clear);
static void meta_glsl_generate_mipmap_cleanup(struct gen_mipmap_state *mipmap);
@@ -179,7 +178,7 @@ _mesa_meta_free(struct gl_context *ctx)
{
GET_CURRENT_CONTEXT(old_context);
_mesa_make_current(ctx, NULL, NULL);
- meta_glsl_blit_cleanup(&ctx->Meta->Blit);
+ _mesa_meta_glsl_blit_cleanup(&ctx->Meta->Blit);
meta_glsl_clear_cleanup(&ctx->Meta->Clear);
meta_glsl_generate_mipmap_cleanup(&ctx->Meta->Mipmap);
cleanup_temp_texture(&ctx->Meta->TempTex);
@@ -1156,611 +1155,6 @@ _mesa_meta_setup_drawpix_texture(struct gl_context *ctx,
}
}
-
-
-/**
- * One-time init for drawing depth pixels.
- */
-static void
-init_blit_depth_pixels(struct gl_context *ctx)
-{
- static const char *program =
- "!!ARBfp1.0\n"
- "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"
- "END \n";
- char program2[200];
- struct blit_state *blit = &ctx->Meta->Blit;
- struct temp_texture *tex = _mesa_meta_get_temp_texture(ctx);
- const char *texTarget;
-
- assert(blit->DepthFP == 0);
-
- /* replace %s with "RECT" or "2D" */
- assert(strlen(program) + 4 < sizeof(program2));
- if (tex->Target == GL_TEXTURE_RECTANGLE)
- texTarget = "RECT";
- else
- texTarget = "2D";
- _mesa_snprintf(program2, sizeof(program2), program, texTarget);
-
- _mesa_GenProgramsARB(1, &blit->DepthFP);
- _mesa_BindProgramARB(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
- _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
- strlen(program2), (const GLubyte *) program2);
-}
-
-static void
-setup_ff_blit_framebuffer(struct blit_state *blit)
-{
- struct vertex {
- GLfloat x, y, s, t;
- };
- struct vertex verts[4];
-
- if (blit->VAO == 0) {
- /* one-time setup */
-
- /* create vertex array object */
- _mesa_GenVertexArrays(1, &blit->VAO);
- _mesa_BindVertexArray(blit->VAO);
-
- /* create vertex array buffer */
- _mesa_GenBuffers(1, &blit->VBO);
- _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, blit->VBO);
- _mesa_BufferData(GL_ARRAY_BUFFER_ARB, sizeof(verts),
- NULL, GL_DYNAMIC_DRAW_ARB);
-
- /* setup vertex arrays */
- _mesa_VertexPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(x));
- _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));
- _mesa_EnableClientState(GL_VERTEX_ARRAY);
- _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
- }
-
- /* setup projection matrix */
- _mesa_MatrixMode(GL_PROJECTION);
- _mesa_LoadIdentity();
- _mesa_Ortho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
-
-}
-
-static void
-setup_glsl_blit_framebuffer(struct gl_context *ctx,
- struct blit_state *blit,
- GLenum target)
-{
- struct vertex {
- GLfloat x, y, s, t;
- };
- struct vertex verts[4];
- const char *vs_source;
- char *fs_source;
- GLuint vs, fs;
- void *mem_ctx;
- GLuint ShaderProg;
- GLboolean texture_2d = (target == GL_TEXTURE_2D);
-
- /* target = GL_TEXTURE_RECTANGLE is not supported in GLES 3.0 */
- assert(_mesa_is_desktop_gl(ctx) || texture_2d);
-
- /* Check if already initialized */
- if (blit->VAO == 0) {
-
- /* create vertex array object */
- _mesa_GenVertexArrays(1, &blit->VAO);
- _mesa_BindVertexArray(blit->VAO);
-
- /* create vertex array buffer */
- _mesa_GenBuffers(1, &blit->VBO);
- _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, blit->VBO);
- _mesa_BufferData(GL_ARRAY_BUFFER_ARB, sizeof(verts),
- NULL, GL_DYNAMIC_DRAW_ARB);
-
- /* setup vertex arrays */
- _mesa_VertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE,
- sizeof(struct vertex), OFFSET(x));
- _mesa_VertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE,
- sizeof(struct vertex), OFFSET(s));
-
- _mesa_EnableVertexAttribArray(0);
- _mesa_EnableVertexAttribArray(1);
- }
-
- /* Generate a relevant fragment shader program for the texture target */
- if ((target == GL_TEXTURE_2D && blit->ShaderProg != 0) ||
- (target == GL_TEXTURE_RECTANGLE && blit->RectShaderProg != 0)) {
- return;
- }
-
- mem_ctx = ralloc_context(NULL);
-
- if (ctx->Const.GLSLVersion < 130) {
- vs_source =
- "attribute vec2 position;\n"
- "attribute vec2 textureCoords;\n"
- "varying vec2 texCoords;\n"
- "void main()\n"
- "{\n"
- " texCoords = textureCoords;\n"
- " gl_Position = vec4(position, 0.0, 1.0);\n"
- "}\n";
-
- fs_source = ralloc_asprintf(mem_ctx,
- "#ifdef GL_ES\n"
- "precision highp float;\n"
- "#endif\n"
- "uniform %s texSampler;\n"
- "varying vec2 texCoords;\n"
- "void main()\n"
- "{\n"
- " gl_FragColor = %s(texSampler, texCoords);\n"
- " gl_FragDepth = gl_FragColor.r;\n"
- "}\n",
- texture_2d ? "sampler2D" : "sampler2DRect",
- texture_2d ? "texture2D" : "texture2DRect");
- }
- else {
- vs_source = ralloc_asprintf(mem_ctx,
- "#version %s\n"
- "in vec2 position;\n"
- "in vec2 textureCoords;\n"
- "out vec2 texCoords;\n"
- "void main()\n"
- "{\n"
- " texCoords = textureCoords;\n"
- " gl_Position = vec4(position, 0.0, 1.0);\n"
- "}\n",
- _mesa_is_desktop_gl(ctx) ? "130" : "300 es");
- fs_source = ralloc_asprintf(mem_ctx,
- "#version %s\n"
- "#ifdef GL_ES\n"
- "precision highp float;\n"
- "#endif\n"
- "uniform %s texSampler;\n"
- "in vec2 texCoords;\n"
- "out vec4 out_color;\n"
- "\n"
- "void main()\n"
- "{\n"
- " out_color = %s(texSampler, texCoords);\n"
- " gl_FragDepth = out_color.r;\n"
- "}\n",
- _mesa_is_desktop_gl(ctx) ? "130" : "300 es",
- texture_2d ? "sampler2D" : "sampler2DRect",
- texture_2d ? "texture" : "texture2DRect");
- }
-
- vs = _mesa_meta_compile_shader_with_debug(ctx, GL_VERTEX_SHADER, vs_source);
- fs = _mesa_meta_compile_shader_with_debug(ctx, GL_FRAGMENT_SHADER,
- fs_source);
-
- ShaderProg = _mesa_CreateProgramObjectARB();
- _mesa_AttachShader(ShaderProg, fs);
- _mesa_DeleteObjectARB(fs);
- _mesa_AttachShader(ShaderProg, vs);
- _mesa_DeleteObjectARB(vs);
- _mesa_BindAttribLocation(ShaderProg, 0, "position");
- _mesa_BindAttribLocation(ShaderProg, 1, "texcoords");
- _mesa_meta_link_program_with_debug(ctx, ShaderProg);
- ralloc_free(mem_ctx);
- if (texture_2d)
- blit->ShaderProg = ShaderProg;
- else
- blit->RectShaderProg = ShaderProg;
-}
-
-/**
- * Try to do a glBlitFramebuffer using no-copy texturing.
- * We can do this when the src renderbuffer is actually a texture.
- * But if the src buffer == dst buffer we cannot do this.
- *
- * \return new buffer mask indicating the buffers left to blit using the
- * normal path.
- */
-static GLbitfield
-blitframebuffer_texture(struct gl_context *ctx,
- GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
- GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
- GLbitfield mask, GLenum filter, GLint flipX,
- GLint flipY, GLboolean glsl_version)
-{
- if (mask & GL_COLOR_BUFFER_BIT) {
- const struct gl_framebuffer *drawFb = ctx->DrawBuffer;
- const struct gl_framebuffer *readFb = ctx->ReadBuffer;
- const struct gl_renderbuffer_attachment *drawAtt;
- const struct gl_renderbuffer_attachment *readAtt =
- &readFb->Attachment[readFb->_ColorReadBufferIndex];
-
- if (readAtt && readAtt->Texture) {
- struct blit_state *blit = &ctx->Meta->Blit;
- const GLint dstX = MIN2(dstX0, dstX1);
- const GLint dstY = MIN2(dstY0, dstY1);
- const GLint dstW = abs(dstX1 - dstX0);
- const GLint dstH = abs(dstY1 - dstY0);
- const struct gl_texture_object *texObj = readAtt->Texture;
- const GLuint srcLevel = readAtt->TextureLevel;
- const GLint baseLevelSave = texObj->BaseLevel;
- const GLint maxLevelSave = texObj->MaxLevel;
- const GLenum target = texObj->Target;
- GLuint sampler, samplerSave =
- ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler ?
- ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler->Name : 0;
- int i;
-
- /* Iterate through all draw buffers */
- for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
- int idx = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
- if (idx == -1)
- continue;
- drawAtt = &drawFb->Attachment[idx];
-
- if (drawAtt->Texture == readAtt->Texture) {
- /* Can't use same texture as both the source and dest. We need
- * to handle overlapping blits and besides, some hw may not
- * support this.
- */
- return mask;
- }
- }
-
- if (target != GL_TEXTURE_2D && target != GL_TEXTURE_RECTANGLE_ARB) {
- /* Can't handle other texture types at this time */
- return mask;
- }
-
- /* Choose between glsl version and fixed function version of
- * BlitFramebuffer function.
- */
- if (glsl_version) {
- setup_glsl_blit_framebuffer(ctx, blit, target);
- if (target == GL_TEXTURE_2D)
- _mesa_UseProgram(blit->ShaderProg);
- else
- _mesa_UseProgram(blit->RectShaderProg);
- }
- else {
- setup_ff_blit_framebuffer(&ctx->Meta->Blit);
- }
-
- _mesa_BindVertexArray(blit->VAO);
- _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, blit->VBO);
-
- _mesa_GenSamplers(1, &sampler);
- _mesa_BindSampler(ctx->Texture.CurrentUnit, sampler);
-
- /*
- printf("Blit from texture!\n");
- printf(" srcAtt %p dstAtt %p\n", readAtt, drawAtt);
- printf(" srcTex %p dstText %p\n", texObj, drawAtt->Texture);
- */
-
- /* Prepare src texture state */
- _mesa_BindTexture(target, texObj->Name);
- _mesa_SamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, filter);
- _mesa_SamplerParameteri(sampler, GL_TEXTURE_MAG_FILTER, filter);
- if (target != GL_TEXTURE_RECTANGLE_ARB) {
- _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, srcLevel);
- _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);
- }
- _mesa_SamplerParameteri(sampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
- _mesa_SamplerParameteri(sampler, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-
- /* Always do our blits with no sRGB decode or encode. Note that
- * GL_FRAMEBUFFER_SRGB has already been disabled by
- * _mesa_meta_begin().
- */
- if (ctx->Extensions.EXT_texture_sRGB_decode) {
- _mesa_SamplerParameteri(sampler, GL_TEXTURE_SRGB_DECODE_EXT,
- GL_SKIP_DECODE_EXT);
- }
-
- if (ctx->API == API_OPENGL_COMPAT || ctx->API == API_OPENGLES) {
- _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
- _mesa_set_enable(ctx, target, GL_TRUE);
- }
-
- /* Prepare vertex data (the VBO was previously created and bound) */
- {
- struct vertex {
- GLfloat x, y, s, t;
- };
- struct vertex verts[4];
- GLfloat s0, t0, s1, t1;
-
- if (target == GL_TEXTURE_2D) {
- const struct gl_texture_image *texImage
- = _mesa_select_tex_image(ctx, texObj, target, srcLevel);
- s0 = srcX0 / (float) texImage->Width;
- s1 = srcX1 / (float) texImage->Width;
- t0 = srcY0 / (float) texImage->Height;
- t1 = srcY1 / (float) texImage->Height;
- }
- else {
- assert(target == GL_TEXTURE_RECTANGLE_ARB);
- s0 = (float) srcX0;
- s1 = (float) srcX1;
- t0 = (float) srcY0;
- t1 = (float) srcY1;
- }
-
- /* setup vertex positions */
- verts[0].x = -1.0F * flipX;
- verts[0].y = -1.0F * flipY;
- verts[1].x = 1.0F * flipX;
- verts[1].y = -1.0F * flipY;
- verts[2].x = 1.0F * flipX;
- verts[2].y = 1.0F * flipY;
- verts[3].x = -1.0F * flipX;
- verts[3].y = 1.0F * flipY;
-
- verts[0].s = s0;
- verts[0].t = t0;
- verts[1].s = s1;
- verts[1].t = t0;
- verts[2].s = s1;
- verts[2].t = t1;
- verts[3].s = s0;
- verts[3].t = t1;
-
- _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
- }
-
- /* setup viewport */
- _mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
- _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
- _mesa_DepthMask(GL_FALSE);
- _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
- /* Restore texture object state, the texture binding will
- * be restored by _mesa_meta_end().
- */
- if (target != GL_TEXTURE_RECTANGLE_ARB) {
- _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, baseLevelSave);
- _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);
- }
-
- _mesa_BindSampler(ctx->Texture.CurrentUnit, samplerSave);
- _mesa_DeleteSamplers(1, &sampler);
-
- /* Done with color buffer */
- mask &= ~GL_COLOR_BUFFER_BIT;
- }
- }
-
- return mask;
-}
-
-
-/**
- * Meta implementation of ctx->Driver.BlitFramebuffer() in terms
- * of texture mapping and polygon rendering.
- */
-void
-_mesa_meta_BlitFramebuffer(struct gl_context *ctx,
- GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
- GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
- GLbitfield mask, GLenum filter)
-{
- struct blit_state *blit = &ctx->Meta->Blit;
- struct temp_texture *tex = _mesa_meta_get_temp_texture(ctx);
- struct temp_texture *depthTex = _mesa_meta_get_temp_depth_texture(ctx);
- const GLsizei maxTexSize = tex->MaxSize;
- const GLint srcX = MIN2(srcX0, srcX1);
- const GLint srcY = MIN2(srcY0, srcY1);
- const GLint srcW = abs(srcX1 - srcX0);
- const GLint srcH = abs(srcY1 - srcY0);
- const GLint dstX = MIN2(dstX0, dstX1);
- const GLint dstY = MIN2(dstY0, dstY1);
- const GLint dstW = abs(dstX1 - dstX0);
- const GLint dstH = abs(dstY1 - dstY0);
- const GLint srcFlipX = (srcX1 - srcX0) / srcW;
- const GLint srcFlipY = (srcY1 - srcY0) / srcH;
- const GLint dstFlipX = (dstX1 - dstX0) / dstW;
- const GLint dstFlipY = (dstY1 - dstY0) / dstH;
- const GLint flipX = srcFlipX * dstFlipX;
- const GLint flipY = srcFlipY * dstFlipY;
-
- struct vertex {
- GLfloat x, y, s, t;
- };
- struct vertex verts[4];
- GLboolean newTex;
- const GLboolean use_glsl_version = ctx->Extensions.ARB_vertex_shader &&
- ctx->Extensions.ARB_fragment_shader &&
- (ctx->API != API_OPENGLES);
-
- /* In addition to falling back if the blit size is larger than the maximum
- * texture size, fallback if the source is multisampled. This fallback can
- * be removed once Mesa gets support ARB_texture_multisample.
- */
- if (srcW > maxTexSize || srcH > maxTexSize
- || ctx->ReadBuffer->Visual.samples > 0) {
- /* XXX avoid this fallback */
- _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1, mask, filter);
- return;
- }
-
- /* only scissor effects blit so save/clear all other relevant state */
- _mesa_meta_begin(ctx, ~MESA_META_SCISSOR);
-
- /* Try faster, direct texture approach first */
- mask = blitframebuffer_texture(ctx, srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1, mask, filter,
- dstFlipX, dstFlipY, use_glsl_version);
- if (mask == 0x0) {
- _mesa_meta_end(ctx);
- return;
- }
-
- /* Choose between glsl version and fixed function version of
- * BlitFramebuffer function.
- */
- if (use_glsl_version) {
- setup_glsl_blit_framebuffer(ctx, blit, tex->Target);
- if (tex->Target == GL_TEXTURE_2D)
- _mesa_UseProgram(blit->ShaderProg);
- else
- _mesa_UseProgram(blit->RectShaderProg);
- }
- else {
- setup_ff_blit_framebuffer(blit);
- }
-
- _mesa_BindVertexArray(blit->VAO);
- _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, blit->VBO);
-
- /* Continue with "normal" approach which involves copying the src rect
- * into a temporary texture and is "blitted" by drawing a textured quad.
- */
- {
- /* setup vertex positions */
- verts[0].x = -1.0F * flipX;
- verts[0].y = -1.0F * flipY;
- verts[1].x = 1.0F * flipX;
- verts[1].y = -1.0F * flipY;
- verts[2].x = 1.0F * flipX;
- verts[2].y = 1.0F * flipY;
- verts[3].x = -1.0F * flipX;
- verts[3].y = 1.0F * flipY;
-
- }
-
- /* glEnable() in gles2 and gles3 doesn't allow GL_TEXTURE_{1D, 2D, etc.}
- * tokens.
- */
- if (_mesa_is_desktop_gl(ctx) || ctx->API == API_OPENGLES)
- _mesa_set_enable(ctx, tex->Target, GL_TRUE);
-
- if (mask & GL_COLOR_BUFFER_BIT) {
- const struct gl_framebuffer *readFb = ctx->ReadBuffer;
- const struct gl_renderbuffer *colorReadRb = readFb->_ColorReadBuffer;
- const GLenum rb_base_format =
- _mesa_base_tex_format(ctx, colorReadRb->InternalFormat);
-
- /* Using the exact source rectangle to create the texture does incorrect
- * linear filtering along the edges. So, allocate the texture extended along
- * edges by one pixel in x, y directions.
- */
- newTex = _mesa_meta_alloc_texture(tex, srcW + 2, srcH + 2,
- rb_base_format);
- _mesa_meta_setup_copypix_texture(ctx, tex, newTex,
- srcX - 1, srcY - 1, srcW + 2, srcH + 2,
- rb_base_format, filter);
- /* texcoords (after texture allocation!) */
- {
- verts[0].s = 1.0F;
- verts[0].t = 1.0F;
- verts[1].s = tex->Sright - 1.0F;
- verts[1].t = 1.0F;
- verts[2].s = tex->Sright - 1.0F;
- verts[2].t = tex->Ttop - 1.0F;
- verts[3].s = 1.0F;
- verts[3].t = tex->Ttop - 1.0F;
-
- /* upload new vertex data */
- _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
- }
-
- _mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
- _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
- _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_FALSE);
- _mesa_DepthMask(GL_FALSE);
- _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
- mask &= ~GL_COLOR_BUFFER_BIT;
- }
-
- if ((mask & GL_DEPTH_BUFFER_BIT) &&
- _mesa_is_desktop_gl(ctx) &&
- ctx->Extensions.ARB_depth_texture &&
- ctx->Extensions.ARB_fragment_program) {
-
- GLuint *tmp = malloc(srcW * srcH * sizeof(GLuint));
-
- if (tmp) {
-
- newTex = _mesa_meta_alloc_texture(depthTex, srcW, srcH,
- GL_DEPTH_COMPONENT);
- _mesa_ReadPixels(srcX, srcY, srcW, srcH, GL_DEPTH_COMPONENT,
- GL_UNSIGNED_INT, tmp);
- _mesa_meta_setup_drawpix_texture(ctx, depthTex, newTex,
- GL_DEPTH_COMPONENT,
- srcW, srcH, GL_DEPTH_COMPONENT,
- GL_UNSIGNED_INT, tmp);
-
- /* texcoords (after texture allocation!) */
- {
- verts[0].s = 0.0F;
- verts[0].t = 0.0F;
- verts[1].s = depthTex->Sright;
- verts[1].t = 0.0F;
- verts[2].s = depthTex->Sright;
- verts[2].t = depthTex->Ttop;
- verts[3].s = 0.0F;
- verts[3].t = depthTex->Ttop;
-
- /* upload new vertex data */
- _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
- }
-
- if (!blit->DepthFP)
- init_blit_depth_pixels(ctx);
-
- _mesa_BindProgramARB(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
- _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
- _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
- _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);
- _mesa_DepthFunc(GL_ALWAYS);
- _mesa_DepthMask(GL_TRUE);
-
- _mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
- _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
- _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
- mask &= ~GL_DEPTH_BUFFER_BIT;
-
- free(tmp);
- }
- }
-
- if (mask & GL_STENCIL_BUFFER_BIT) {
- /* XXX can't easily do stencil */
- }
-
- if (_mesa_is_desktop_gl(ctx) || ctx->API == API_OPENGLES)
- _mesa_set_enable(ctx, tex->Target, GL_FALSE);
-
- _mesa_meta_end(ctx);
-
- if (mask) {
- _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1, mask, filter);
- }
-}
-
-static void
-meta_glsl_blit_cleanup(struct blit_state *blit)
-{
- if (blit->VAO) {
- _mesa_DeleteVertexArrays(1, &blit->VAO);
- blit->VAO = 0;
- _mesa_DeleteBuffers(1, &blit->VBO);
- blit->VBO = 0;
- }
- if (blit->DepthFP) {
- _mesa_DeleteProgramsARB(1, &blit->DepthFP);
- blit->DepthFP = 0;
- }
-
- _mesa_DeleteObjectARB(blit->ShaderProg);
- blit->ShaderProg = 0;
- _mesa_DeleteObjectARB(blit->RectShaderProg);
- blit->RectShaderProg = 0;
-
- _mesa_DeleteTextures(1, &blit->depthTex.TexObj);
- blit->depthTex.TexObj = 0;
-}
-
-
/**
* Meta implementation of ctx->Driver.Clear() in terms of polygon rendering.
*/
diff --git a/src/mesa/drivers/common/meta.h b/src/mesa/drivers/common/meta.h
index e8b1d82..64925ff 100644
--- a/src/mesa/drivers/common/meta.h
+++ b/src/mesa/drivers/common/meta.h
@@ -350,6 +350,9 @@ _mesa_meta_BlitFramebuffer(struct gl_context *ctx,
GLbitfield mask, GLenum filter);
extern void
+_mesa_meta_glsl_blit_cleanup(struct blit_state *blit);
+
+extern void
_mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers);
extern void
diff --git a/src/mesa/drivers/common/meta_blit.c b/src/mesa/drivers/common/meta_blit.c
new file mode 100644
index 0000000..5f7cad7
--- /dev/null
+++ b/src/mesa/drivers/common/meta_blit.c
@@ -0,0 +1,675 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2009 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, sublicense,
+ * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 "main/glheader.h"
+#include "main/mtypes.h"
+#include "main/imports.h"
+#include "main/arbprogram.h"
+#include "main/arrayobj.h"
+#include "main/blend.h"
+#include "main/bufferobj.h"
+#include "main/buffers.h"
+#include "main/colortab.h"
+#include "main/condrender.h"
+#include "main/depth.h"
+#include "main/enable.h"
+#include "main/fbobject.h"
+#include "main/feedback.h"
+#include "main/formats.h"
+#include "main/glformats.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "main/matrix.h"
+#include "main/mipmap.h"
+#include "main/pixel.h"
+#include "main/pbo.h"
+#include "main/polygon.h"
+#include "main/queryobj.h"
+#include "main/readpix.h"
+#include "main/scissor.h"
+#include "main/shaderapi.h"
+#include "main/shaderobj.h"
+#include "main/state.h"
+#include "main/stencil.h"
+#include "main/texobj.h"
+#include "main/texenv.h"
+#include "main/texgetimage.h"
+#include "main/teximage.h"
+#include "main/texparam.h"
+#include "main/texstate.h"
+#include "main/transformfeedback.h"
+#include "main/uniforms.h"
+#include "main/varray.h"
+#include "main/viewport.h"
+#include "main/samplerobj.h"
+#include "program/program.h"
+#include "swrast/swrast.h"
+#include "drivers/common/meta.h"
+#include "main/enums.h"
+#include "main/glformats.h"
+#include "../glsl/ralloc.h"
+
+/** Return offset in bytes of the field within a vertex struct */
+#define OFFSET(FIELD) ((void *) offsetof(struct vertex, FIELD))
+/**
+ * One-time init for drawing depth pixels.
+ */
+static void
+init_blit_depth_pixels(struct gl_context *ctx)
+{
+ static const char *program =
+ "!!ARBfp1.0\n"
+ "TEX result.depth, fragment.texcoord[0], texture[0], %s; \n"
+ "END \n";
+ char program2[200];
+ struct blit_state *blit = &ctx->Meta->Blit;
+ struct temp_texture *tex = _mesa_meta_get_temp_texture(ctx);
+ const char *texTarget;
+
+ assert(blit->DepthFP == 0);
+
+ /* replace %s with "RECT" or "2D" */
+ assert(strlen(program) + 4 < sizeof(program2));
+ if (tex->Target == GL_TEXTURE_RECTANGLE)
+ texTarget = "RECT";
+ else
+ texTarget = "2D";
+ _mesa_snprintf(program2, sizeof(program2), program, texTarget);
+
+ _mesa_GenProgramsARB(1, &blit->DepthFP);
+ _mesa_BindProgramARB(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
+ _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+ strlen(program2), (const GLubyte *) program2);
+}
+
+static void
+setup_ff_blit_framebuffer(struct blit_state *blit)
+{
+ struct vertex {
+ GLfloat x, y, s, t;
+ };
+ struct vertex verts[4];
+
+ if (blit->VAO == 0) {
+ /* one-time setup */
+
+ /* create vertex array object */
+ _mesa_GenVertexArrays(1, &blit->VAO);
+ _mesa_BindVertexArray(blit->VAO);
+
+ /* create vertex array buffer */
+ _mesa_GenBuffers(1, &blit->VBO);
+ _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, blit->VBO);
+ _mesa_BufferData(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+ NULL, GL_DYNAMIC_DRAW_ARB);
+
+ /* setup vertex arrays */
+ _mesa_VertexPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(x));
+ _mesa_TexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), OFFSET(s));
+ _mesa_EnableClientState(GL_VERTEX_ARRAY);
+ _mesa_EnableClientState(GL_TEXTURE_COORD_ARRAY);
+ }
+
+ /* setup projection matrix */
+ _mesa_MatrixMode(GL_PROJECTION);
+ _mesa_LoadIdentity();
+ _mesa_Ortho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
+
+}
+
+static void
+setup_glsl_blit_framebuffer(struct gl_context *ctx,
+ struct blit_state *blit,
+ GLenum target)
+{
+ struct vertex {
+ GLfloat x, y, s, t;
+ };
+ struct vertex verts[4];
+ const char *vs_source;
+ char *fs_source;
+ GLuint vs, fs;
+ void *mem_ctx;
+ GLuint ShaderProg;
+ GLboolean texture_2d = (target == GL_TEXTURE_2D);
+
+ /* target = GL_TEXTURE_RECTANGLE is not supported in GLES 3.0 */
+ assert(_mesa_is_desktop_gl(ctx) || texture_2d);
+
+ /* Check if already initialized */
+ if (blit->VAO == 0) {
+
+ /* create vertex array object */
+ _mesa_GenVertexArrays(1, &blit->VAO);
+ _mesa_BindVertexArray(blit->VAO);
+
+ /* create vertex array buffer */
+ _mesa_GenBuffers(1, &blit->VBO);
+ _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, blit->VBO);
+ _mesa_BufferData(GL_ARRAY_BUFFER_ARB, sizeof(verts),
+ NULL, GL_DYNAMIC_DRAW_ARB);
+
+ /* setup vertex arrays */
+ _mesa_VertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE,
+ sizeof(struct vertex), OFFSET(x));
+ _mesa_VertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE,
+ sizeof(struct vertex), OFFSET(s));
+
+ _mesa_EnableVertexAttribArray(0);
+ _mesa_EnableVertexAttribArray(1);
+ }
+
+ /* Generate a relevant fragment shader program for the texture target */
+ if ((target == GL_TEXTURE_2D && blit->ShaderProg != 0) ||
+ (target == GL_TEXTURE_RECTANGLE && blit->RectShaderProg != 0)) {
+ return;
+ }
+
+ mem_ctx = ralloc_context(NULL);
+
+ if (ctx->Const.GLSLVersion < 130) {
+ vs_source =
+ "attribute vec2 position;\n"
+ "attribute vec2 textureCoords;\n"
+ "varying vec2 texCoords;\n"
+ "void main()\n"
+ "{\n"
+ " texCoords = textureCoords;\n"
+ " gl_Position = vec4(position, 0.0, 1.0);\n"
+ "}\n";
+
+ fs_source = ralloc_asprintf(mem_ctx,
+ "#ifdef GL_ES\n"
+ "precision highp float;\n"
+ "#endif\n"
+ "uniform %s texSampler;\n"
+ "varying vec2 texCoords;\n"
+ "void main()\n"
+ "{\n"
+ " gl_FragColor = %s(texSampler, texCoords);\n"
+ " gl_FragDepth = gl_FragColor.r;\n"
+ "}\n",
+ texture_2d ? "sampler2D" : "sampler2DRect",
+ texture_2d ? "texture2D" : "texture2DRect");
+ }
+ else {
+ vs_source = ralloc_asprintf(mem_ctx,
+ "#version %s\n"
+ "in vec2 position;\n"
+ "in vec2 textureCoords;\n"
+ "out vec2 texCoords;\n"
+ "void main()\n"
+ "{\n"
+ " texCoords = textureCoords;\n"
+ " gl_Position = vec4(position, 0.0, 1.0);\n"
+ "}\n",
+ _mesa_is_desktop_gl(ctx) ? "130" : "300 es");
+ fs_source = ralloc_asprintf(mem_ctx,
+ "#version %s\n"
+ "#ifdef GL_ES\n"
+ "precision highp float;\n"
+ "#endif\n"
+ "uniform %s texSampler;\n"
+ "in vec2 texCoords;\n"
+ "out vec4 out_color;\n"
+ "\n"
+ "void main()\n"
+ "{\n"
+ " out_color = %s(texSampler, texCoords);\n"
+ " gl_FragDepth = out_color.r;\n"
+ "}\n",
+ _mesa_is_desktop_gl(ctx) ? "130" : "300 es",
+ texture_2d ? "sampler2D" : "sampler2DRect",
+ texture_2d ? "texture" : "texture2DRect");
+ }
+
+ vs = _mesa_meta_compile_shader_with_debug(ctx, GL_VERTEX_SHADER, vs_source);
+ fs = _mesa_meta_compile_shader_with_debug(ctx, GL_FRAGMENT_SHADER,
+ fs_source);
+
+ ShaderProg = _mesa_CreateProgramObjectARB();
+ _mesa_AttachShader(ShaderProg, fs);
+ _mesa_DeleteObjectARB(fs);
+ _mesa_AttachShader(ShaderProg, vs);
+ _mesa_DeleteObjectARB(vs);
+ _mesa_BindAttribLocation(ShaderProg, 0, "position");
+ _mesa_BindAttribLocation(ShaderProg, 1, "texcoords");
+ _mesa_meta_link_program_with_debug(ctx, ShaderProg);
+ ralloc_free(mem_ctx);
+ if (texture_2d)
+ blit->ShaderProg = ShaderProg;
+ else
+ blit->RectShaderProg = ShaderProg;
+}
+
+/**
+ * Try to do a glBlitFramebuffer using no-copy texturing.
+ * We can do this when the src renderbuffer is actually a texture.
+ * But if the src buffer == dst buffer we cannot do this.
+ *
+ * \return new buffer mask indicating the buffers left to blit using the
+ * normal path.
+ */
+static GLbitfield
+blitframebuffer_texture(struct gl_context *ctx,
+ GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+ GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+ GLbitfield mask, GLenum filter, GLint flipX,
+ GLint flipY, GLboolean glsl_version)
+{
+ if (mask & GL_COLOR_BUFFER_BIT) {
+ const struct gl_framebuffer *drawFb = ctx->DrawBuffer;
+ const struct gl_framebuffer *readFb = ctx->ReadBuffer;
+ const struct gl_renderbuffer_attachment *drawAtt;
+ const struct gl_renderbuffer_attachment *readAtt =
+ &readFb->Attachment[readFb->_ColorReadBufferIndex];
+
+ if (readAtt && readAtt->Texture) {
+ struct blit_state *blit = &ctx->Meta->Blit;
+ const GLint dstX = MIN2(dstX0, dstX1);
+ const GLint dstY = MIN2(dstY0, dstY1);
+ const GLint dstW = abs(dstX1 - dstX0);
+ const GLint dstH = abs(dstY1 - dstY0);
+ const struct gl_texture_object *texObj = readAtt->Texture;
+ const GLuint srcLevel = readAtt->TextureLevel;
+ const GLint baseLevelSave = texObj->BaseLevel;
+ const GLint maxLevelSave = texObj->MaxLevel;
+ const GLenum target = texObj->Target;
+ GLuint sampler, samplerSave =
+ ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler ?
+ ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler->Name : 0;
+ int i;
+
+ /* Iterate through all draw buffers */
+ for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
+ int idx = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
+ if (idx == -1)
+ continue;
+ drawAtt = &drawFb->Attachment[idx];
+
+ if (drawAtt->Texture == readAtt->Texture) {
+ /* Can't use same texture as both the source and dest. We need
+ * to handle overlapping blits and besides, some hw may not
+ * support this.
+ */
+ return mask;
+ }
+ }
+
+ if (target != GL_TEXTURE_2D && target != GL_TEXTURE_RECTANGLE_ARB) {
+ /* Can't handle other texture types at this time */
+ return mask;
+ }
+
+ /* Choose between glsl version and fixed function version of
+ * BlitFramebuffer function.
+ */
+ if (glsl_version) {
+ setup_glsl_blit_framebuffer(ctx, blit, target);
+ if (target == GL_TEXTURE_2D)
+ _mesa_UseProgram(blit->ShaderProg);
+ else
+ _mesa_UseProgram(blit->RectShaderProg);
+ }
+ else {
+ setup_ff_blit_framebuffer(&ctx->Meta->Blit);
+ }
+
+ _mesa_BindVertexArray(blit->VAO);
+ _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, blit->VBO);
+
+ _mesa_GenSamplers(1, &sampler);
+ _mesa_BindSampler(ctx->Texture.CurrentUnit, sampler);
+
+ /*
+ printf("Blit from texture!\n");
+ printf(" srcAtt %p dstAtt %p\n", readAtt, drawAtt);
+ printf(" srcTex %p dstText %p\n", texObj, drawAtt->Texture);
+ */
+
+ /* Prepare src texture state */
+ _mesa_BindTexture(target, texObj->Name);
+ _mesa_SamplerParameteri(sampler, GL_TEXTURE_MIN_FILTER, filter);
+ _mesa_SamplerParameteri(sampler, GL_TEXTURE_MAG_FILTER, filter);
+ if (target != GL_TEXTURE_RECTANGLE_ARB) {
+ _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, srcLevel);
+ _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, srcLevel);
+ }
+ _mesa_SamplerParameteri(sampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ _mesa_SamplerParameteri(sampler, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+ /* Always do our blits with no sRGB decode or encode. Note that
+ * GL_FRAMEBUFFER_SRGB has already been disabled by
+ * _mesa_meta_begin().
+ */
+ if (ctx->Extensions.EXT_texture_sRGB_decode) {
+ _mesa_SamplerParameteri(sampler, GL_TEXTURE_SRGB_DECODE_EXT,
+ GL_SKIP_DECODE_EXT);
+ }
+
+ if (ctx->API == API_OPENGL_COMPAT || ctx->API == API_OPENGLES) {
+ _mesa_TexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+ _mesa_set_enable(ctx, target, GL_TRUE);
+ }
+
+ /* Prepare vertex data (the VBO was previously created and bound) */
+ {
+ struct vertex {
+ GLfloat x, y, s, t;
+ };
+ struct vertex verts[4];
+ GLfloat s0, t0, s1, t1;
+
+ if (target == GL_TEXTURE_2D) {
+ const struct gl_texture_image *texImage
+ = _mesa_select_tex_image(ctx, texObj, target, srcLevel);
+ s0 = srcX0 / (float) texImage->Width;
+ s1 = srcX1 / (float) texImage->Width;
+ t0 = srcY0 / (float) texImage->Height;
+ t1 = srcY1 / (float) texImage->Height;
+ }
+ else {
+ assert(target == GL_TEXTURE_RECTANGLE_ARB);
+ s0 = (float) srcX0;
+ s1 = (float) srcX1;
+ t0 = (float) srcY0;
+ t1 = (float) srcY1;
+ }
+
+ /* setup vertex positions */
+ verts[0].x = -1.0F * flipX;
+ verts[0].y = -1.0F * flipY;
+ verts[1].x = 1.0F * flipX;
+ verts[1].y = -1.0F * flipY;
+ verts[2].x = 1.0F * flipX;
+ verts[2].y = 1.0F * flipY;
+ verts[3].x = -1.0F * flipX;
+ verts[3].y = 1.0F * flipY;
+
+ verts[0].s = s0;
+ verts[0].t = t0;
+ verts[1].s = s1;
+ verts[1].t = t0;
+ verts[2].s = s1;
+ verts[2].t = t1;
+ verts[3].s = s0;
+ verts[3].t = t1;
+
+ _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+ }
+
+ /* setup viewport */
+ _mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
+ _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+ _mesa_DepthMask(GL_FALSE);
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+
+ /* Restore texture object state, the texture binding will
+ * be restored by _mesa_meta_end().
+ */
+ if (target != GL_TEXTURE_RECTANGLE_ARB) {
+ _mesa_TexParameteri(target, GL_TEXTURE_BASE_LEVEL, baseLevelSave);
+ _mesa_TexParameteri(target, GL_TEXTURE_MAX_LEVEL, maxLevelSave);
+ }
+
+ _mesa_BindSampler(ctx->Texture.CurrentUnit, samplerSave);
+ _mesa_DeleteSamplers(1, &sampler);
+
+ /* Done with color buffer */
+ mask &= ~GL_COLOR_BUFFER_BIT;
+ }
+ }
+
+ return mask;
+}
+
+
+/**
+ * Meta implementation of ctx->Driver.BlitFramebuffer() in terms
+ * of texture mapping and polygon rendering.
+ */
+void
+_mesa_meta_BlitFramebuffer(struct gl_context *ctx,
+ GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
+ GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
+ GLbitfield mask, GLenum filter)
+{
+ struct blit_state *blit = &ctx->Meta->Blit;
+ struct temp_texture *tex = _mesa_meta_get_temp_texture(ctx);
+ struct temp_texture *depthTex = _mesa_meta_get_temp_depth_texture(ctx);
+ const GLsizei maxTexSize = tex->MaxSize;
+ const GLint srcX = MIN2(srcX0, srcX1);
+ const GLint srcY = MIN2(srcY0, srcY1);
+ const GLint srcW = abs(srcX1 - srcX0);
+ const GLint srcH = abs(srcY1 - srcY0);
+ const GLint dstX = MIN2(dstX0, dstX1);
+ const GLint dstY = MIN2(dstY0, dstY1);
+ const GLint dstW = abs(dstX1 - dstX0);
+ const GLint dstH = abs(dstY1 - dstY0);
+ const GLint srcFlipX = (srcX1 - srcX0) / srcW;
+ const GLint srcFlipY = (srcY1 - srcY0) / srcH;
+ const GLint dstFlipX = (dstX1 - dstX0) / dstW;
+ const GLint dstFlipY = (dstY1 - dstY0) / dstH;
+ const GLint flipX = srcFlipX * dstFlipX;
+ const GLint flipY = srcFlipY * dstFlipY;
+
+ struct vertex {
+ GLfloat x, y, s, t;
+ };
+ struct vertex verts[4];
+ GLboolean newTex;
+ const GLboolean use_glsl_version = ctx->Extensions.ARB_vertex_shader &&
+ ctx->Extensions.ARB_fragment_shader &&
+ (ctx->API != API_OPENGLES);
+
+ /* In addition to falling back if the blit size is larger than the maximum
+ * texture size, fallback if the source is multisampled. This fallback can
+ * be removed once Mesa gets support ARB_texture_multisample.
+ */
+ if (srcW > maxTexSize || srcH > maxTexSize
+ || ctx->ReadBuffer->Visual.samples > 0) {
+ /* XXX avoid this fallback */
+ _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1, mask, filter);
+ return;
+ }
+
+ /* only scissor effects blit so save/clear all other relevant state */
+ _mesa_meta_begin(ctx, ~MESA_META_SCISSOR);
+
+ /* Try faster, direct texture approach first */
+ mask = blitframebuffer_texture(ctx, srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1, mask, filter,
+ dstFlipX, dstFlipY, use_glsl_version);
+ if (mask == 0x0) {
+ _mesa_meta_end(ctx);
+ return;
+ }
+
+ /* Choose between glsl version and fixed function version of
+ * BlitFramebuffer function.
+ */
+ if (use_glsl_version) {
+ setup_glsl_blit_framebuffer(ctx, blit, tex->Target);
+ if (tex->Target == GL_TEXTURE_2D)
+ _mesa_UseProgram(blit->ShaderProg);
+ else
+ _mesa_UseProgram(blit->RectShaderProg);
+ }
+ else {
+ setup_ff_blit_framebuffer(blit);
+ }
+
+ _mesa_BindVertexArray(blit->VAO);
+ _mesa_BindBuffer(GL_ARRAY_BUFFER_ARB, blit->VBO);
+
+ /* Continue with "normal" approach which involves copying the src rect
+ * into a temporary texture and is "blitted" by drawing a textured quad.
+ */
+ {
+ /* setup vertex positions */
+ verts[0].x = -1.0F * flipX;
+ verts[0].y = -1.0F * flipY;
+ verts[1].x = 1.0F * flipX;
+ verts[1].y = -1.0F * flipY;
+ verts[2].x = 1.0F * flipX;
+ verts[2].y = 1.0F * flipY;
+ verts[3].x = -1.0F * flipX;
+ verts[3].y = 1.0F * flipY;
+
+ }
+
+ /* glEnable() in gles2 and gles3 doesn't allow GL_TEXTURE_{1D, 2D, etc.}
+ * tokens.
+ */
+ if (_mesa_is_desktop_gl(ctx) || ctx->API == API_OPENGLES)
+ _mesa_set_enable(ctx, tex->Target, GL_TRUE);
+
+ if (mask & GL_COLOR_BUFFER_BIT) {
+ const struct gl_framebuffer *readFb = ctx->ReadBuffer;
+ const struct gl_renderbuffer *colorReadRb = readFb->_ColorReadBuffer;
+ const GLenum rb_base_format =
+ _mesa_base_tex_format(ctx, colorReadRb->InternalFormat);
+
+ /* Using the exact source rectangle to create the texture does incorrect
+ * linear filtering along the edges. So, allocate the texture extended along
+ * edges by one pixel in x, y directions.
+ */
+ newTex = _mesa_meta_alloc_texture(tex, srcW + 2, srcH + 2,
+ rb_base_format);
+ _mesa_meta_setup_copypix_texture(ctx, tex, newTex,
+ srcX - 1, srcY - 1, srcW + 2, srcH + 2,
+ rb_base_format, filter);
+ /* texcoords (after texture allocation!) */
+ {
+ verts[0].s = 1.0F;
+ verts[0].t = 1.0F;
+ verts[1].s = tex->Sright - 1.0F;
+ verts[1].t = 1.0F;
+ verts[2].s = tex->Sright - 1.0F;
+ verts[2].t = tex->Ttop - 1.0F;
+ verts[3].s = 1.0F;
+ verts[3].t = tex->Ttop - 1.0F;
+
+ /* upload new vertex data */
+ _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+ }
+
+ _mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
+ _mesa_ColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+ _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_FALSE);
+ _mesa_DepthMask(GL_FALSE);
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ mask &= ~GL_COLOR_BUFFER_BIT;
+ }
+
+ if ((mask & GL_DEPTH_BUFFER_BIT) &&
+ _mesa_is_desktop_gl(ctx) &&
+ ctx->Extensions.ARB_depth_texture &&
+ ctx->Extensions.ARB_fragment_program) {
+
+ GLuint *tmp = malloc(srcW * srcH * sizeof(GLuint));
+
+ if (tmp) {
+
+ newTex = _mesa_meta_alloc_texture(depthTex, srcW, srcH,
+ GL_DEPTH_COMPONENT);
+ _mesa_ReadPixels(srcX, srcY, srcW, srcH, GL_DEPTH_COMPONENT,
+ GL_UNSIGNED_INT, tmp);
+ _mesa_meta_setup_drawpix_texture(ctx, depthTex, newTex,
+ GL_DEPTH_COMPONENT,
+ srcW, srcH, GL_DEPTH_COMPONENT,
+ GL_UNSIGNED_INT, tmp);
+
+ /* texcoords (after texture allocation!) */
+ {
+ verts[0].s = 0.0F;
+ verts[0].t = 0.0F;
+ verts[1].s = depthTex->Sright;
+ verts[1].t = 0.0F;
+ verts[2].s = depthTex->Sright;
+ verts[2].t = depthTex->Ttop;
+ verts[3].s = 0.0F;
+ verts[3].t = depthTex->Ttop;
+
+ /* upload new vertex data */
+ _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+ }
+
+ if (!blit->DepthFP)
+ init_blit_depth_pixels(ctx);
+
+ _mesa_BindProgramARB(GL_FRAGMENT_PROGRAM_ARB, blit->DepthFP);
+ _mesa_set_enable(ctx, GL_FRAGMENT_PROGRAM_ARB, GL_TRUE);
+ _mesa_ColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
+ _mesa_set_enable(ctx, GL_DEPTH_TEST, GL_TRUE);
+ _mesa_DepthFunc(GL_ALWAYS);
+ _mesa_DepthMask(GL_TRUE);
+
+ _mesa_set_viewport(ctx, 0, dstX, dstY, dstW, dstH);
+ _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
+ _mesa_DrawArrays(GL_TRIANGLE_FAN, 0, 4);
+ mask &= ~GL_DEPTH_BUFFER_BIT;
+
+ free(tmp);
+ }
+ }
+
+ if (mask & GL_STENCIL_BUFFER_BIT) {
+ /* XXX can't easily do stencil */
+ }
+
+ if (_mesa_is_desktop_gl(ctx) || ctx->API == API_OPENGLES)
+ _mesa_set_enable(ctx, tex->Target, GL_FALSE);
+
+ _mesa_meta_end(ctx);
+
+ if (mask) {
+ _swrast_BlitFramebuffer(ctx, srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1, mask, filter);
+ }
+}
+
+void
+_mesa_meta_glsl_blit_cleanup(struct blit_state *blit)
+{
+ if (blit->VAO) {
+ _mesa_DeleteVertexArrays(1, &blit->VAO);
+ blit->VAO = 0;
+ _mesa_DeleteBuffers(1, &blit->VBO);
+ blit->VBO = 0;
+ }
+ if (blit->DepthFP) {
+ _mesa_DeleteProgramsARB(1, &blit->DepthFP);
+ blit->DepthFP = 0;
+ }
+
+ _mesa_DeleteObjectARB(blit->ShaderProg);
+ blit->ShaderProg = 0;
+ _mesa_DeleteObjectARB(blit->RectShaderProg);
+ blit->RectShaderProg = 0;
+
+ _mesa_DeleteTextures(1, &blit->depthTex.TexObj);
+ blit->depthTex.TexObj = 0;
+}
--
1.9.rc1
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