/**
* Try to do a glBlitFramebuffer using no-copy texturing.
* We can do this when the src renderbuffer is actually a texture.
- *
- * \return new buffer mask indicating the buffers left to blit using the
- * normal path.
*/
-static GLbitfield
+static bool
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)
+ GLenum filter, GLint flipX, GLint flipY,
+ GLboolean glsl_version)
{
- if (mask & GL_COLOR_BUFFER_BIT) {
- const struct gl_framebuffer *readFb = ctx->ReadBuffer;
- 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;
-
- if (target != GL_TEXTURE_2D && target != GL_TEXTURE_RECTANGLE_ARB) {
- /* Can't handle other texture types at this time */
- return mask;
- }
+ const struct gl_framebuffer *readFb = ctx->ReadBuffer;
+ const struct gl_renderbuffer_attachment *readAtt =
+ &readFb->Attachment[readFb->_ColorReadBufferIndex];
+ 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;
+ GLuint srcLevel;
+ GLint baseLevelSave;
+ GLint maxLevelSave;
+ GLenum target;
+ GLuint sampler, samplerSave =
+ ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler ?
+ ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler->Name : 0;
+
+ 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);
- }
- else {
- _mesa_meta_setup_ff_tnl_for_blit(&ctx->Meta->Blit.VAO,
- &ctx->Meta->Blit.VBO,
- 2);
- }
+ if (readAtt->Texture) {
+ srcLevel = readAtt->TextureLevel;
+ texObj = readAtt->Texture;
+ } else {
+ return false;
+ }
- _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 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;
- }
-
- /* Silence valgrind warnings about reading uninitialized stack. */
- memset(verts, 0, sizeof(verts));
-
- /* 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].tex[0] = s0;
- verts[0].tex[1] = t0;
- verts[1].tex[0] = s1;
- verts[1].tex[1] = t0;
- verts[2].tex[0] = s1;
- verts[2].tex[1] = t1;
- verts[3].tex[0] = s0;
- verts[3].tex[1] = t1;
+ baseLevelSave = texObj->BaseLevel;
+ maxLevelSave = texObj->MaxLevel;
+ target = texObj->Target;
- _mesa_BufferSubData(GL_ARRAY_BUFFER_ARB, 0, sizeof(verts), verts);
- }
+ if (glsl_version) {
+ setup_glsl_blit_framebuffer(ctx, blit, target);
+ }
+ else {
+ _mesa_meta_setup_ff_tnl_for_blit(&ctx->Meta->Blit.VAO,
+ &ctx->Meta->Blit.VBO,
+ 2);
+ }
- /* 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);
+ _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);
- /* 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);
- }
+ /* 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);
+ }
- _mesa_BindSampler(ctx->Texture.CurrentUnit, samplerSave);
- _mesa_DeleteSamplers(1, &sampler);
+ 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);
+ }
- /* Done with color buffer */
- mask &= ~GL_COLOR_BUFFER_BIT;
+ /* Prepare vertex data (the VBO was previously created and bound) */
+ {
+ 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;
+ }
+
+ /* Silence valgrind warnings about reading uninitialized stack. */
+ memset(verts, 0, sizeof(verts));
+
+ /* 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].tex[0] = s0;
+ verts[0].tex[1] = t0;
+ verts[1].tex[0] = s1;
+ verts[1].tex[1] = t0;
+ verts[2].tex[0] = s1;
+ verts[2].tex[1] = t1;
+ verts[3].tex[0] = s0;
+ verts[3].tex[1] = 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);
}
- return mask;
+ _mesa_BindSampler(ctx->Texture.CurrentUnit, samplerSave);
+ _mesa_DeleteSamplers(1, &sampler);
+
+ return true;
}
/**
_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;
+ if (mask & GL_COLOR_BUFFER_BIT) {
+ if (blitframebuffer_texture(ctx, srcX0, srcY0, srcX1, srcY1,
+ dstX0, dstY0, dstX1, dstY1,
+ filter, dstFlipX, dstFlipY,
+ use_glsl_version)) {
+ mask &= ~GL_COLOR_BUFFER_BIT;
+ if (mask == 0x0) {
+ _mesa_meta_end(ctx);
+ return;
+ }
+ }
}
/* Choose between glsl version and fixed function version of
projects / mesa.git / commitdiff