From: Eric Anholt Date: Fri, 28 Feb 2014 20:36:02 +0000 (-0800) Subject: meta: Refactor the BlitFramebuffer color CopyTexImage fallback. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b702233f53d6de50943fa0b81e1def8f879ab644;p=mesa.git meta: Refactor the BlitFramebuffer color CopyTexImage fallback. There shouldn't be anything special about copying out a subset of the src rb to a temp before texturing from it, so just do it when we're figuring out our src texture binding. This drops Anuj's change to copy an extra border of 1 pixel around the src area. I can't see how that change could be valid, and presumably if there's some filtering problem at edges we just need to set the right wrap mode. v2: Don't fall back to swrast on non-2D/RECT/2D_MS textures when we can still CopyTexSubImage. Fixes a segfault regression on i965 with gl-3.2-layered-rendering-blit. Reviewed-by: Ian Romanick (v1) Reviewed-by: Kenneth Graunke (v1) Tested-by: Anuj Phogat --- diff --git a/src/mesa/drivers/common/meta_blit.c b/src/mesa/drivers/common/meta_blit.c index c201521d8e9..8122fa3a850 100644 --- a/src/mesa/drivers/common/meta_blit.c +++ b/src/mesa/drivers/common/meta_blit.c @@ -389,6 +389,7 @@ blitframebuffer_texture(struct gl_context *ctx, ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler->Name : 0; GLuint tempTex = 0; struct gl_renderbuffer *rb = readAtt->Renderbuffer; + struct temp_texture *meta_temp_texture; if (rb->NumSamples && !ctx->Extensions.ARB_texture_multisample) return false; @@ -398,23 +399,17 @@ blitframebuffer_texture(struct gl_context *ctx, filter = GL_LINEAR; } - if (readAtt->Texture) { + if (readAtt->Texture && + (readAtt->Texture->Target == GL_TEXTURE_2D || + readAtt->Texture->Target == GL_TEXTURE_RECTANGLE || + readAtt->Texture->Target == GL_TEXTURE_2D_MULTISAMPLE)) { /* If there's a texture attached of a type we can handle, then just use * it directly. */ srcLevel = readAtt->TextureLevel; texObj = readAtt->Texture; target = texObj->Target; - - switch (target) { - case GL_TEXTURE_2D: - case GL_TEXTURE_RECTANGLE: - case GL_TEXTURE_2D_MULTISAMPLE: - break; - default: - return false; - } - } else if (ctx->Driver.BindRenderbufferTexImage) { + } else if (!readAtt->Texture && ctx->Driver.BindRenderbufferTexImage) { /* Otherwise, we need the driver to be able to bind a renderbuffer as * a texture image. */ @@ -449,7 +444,38 @@ blitframebuffer_texture(struct gl_context *ctx, } } } else { - return false; + GLenum tex_base_format; + int srcW = abs(srcY1 - srcY0); + int srcH = abs(srcY1 - srcY0); + /* Fall back to doing a CopyTexSubImage to get the destination + * renderbuffer into a texture. + */ + if (rb->NumSamples > 1) + return false; + + if (do_depth) { + return false; + } else { + meta_temp_texture = _mesa_meta_get_temp_texture(ctx); + tex_base_format = + _mesa_base_tex_format(ctx, rb->InternalFormat); + } + + srcLevel = 0; + target = meta_temp_texture->Target; + texObj = _mesa_lookup_texture(ctx, meta_temp_texture->TexObj); + + _mesa_meta_setup_copypix_texture(ctx, meta_temp_texture, + srcX0, srcY0, + srcW, srcH, + tex_base_format, + filter); + + + srcX0 = 0; + srcY0 = 0; + srcX1 = srcW; + srcY1 = srcH; } baseLevelSave = texObj->BaseLevel; @@ -601,7 +627,6 @@ _mesa_meta_BlitFramebuffer(struct gl_context *ctx, 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 GLint srcX = MIN2(srcX0, srcX1); const GLint srcY = MIN2(srcY0, srcY1); @@ -663,7 +688,7 @@ _mesa_meta_BlitFramebuffer(struct gl_context *ctx, * BlitFramebuffer function. */ if (use_glsl_version) { - setup_glsl_blit_framebuffer(ctx, blit, NULL, tex->Target); + setup_glsl_blit_framebuffer(ctx, blit, NULL, depthTex->Target); } else { _mesa_meta_setup_ff_tnl_for_blit(&blit->VAO, &blit->VBO, 2); @@ -689,43 +714,7 @@ _mesa_meta_BlitFramebuffer(struct gl_context *ctx, } if (!use_glsl_version) - _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. - */ - _mesa_meta_setup_copypix_texture(ctx, tex, - srcX - 1, srcY - 1, srcW + 2, srcH + 2, - rb_base_format, filter); - /* texcoords (after texture allocation!) */ - { - verts[0].tex[0] = 1.0F; - verts[0].tex[1] = 1.0F; - verts[1].tex[0] = tex->Sright - 1.0F; - verts[1].tex[1] = 1.0F; - verts[2].tex[0] = tex->Sright - 1.0F; - verts[2].tex[1] = tex->Ttop - 1.0F; - verts[3].tex[0] = 1.0F; - verts[3].tex[1] = 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; - } + _mesa_set_enable(ctx, depthTex->Target, GL_TRUE); if ((mask & GL_DEPTH_BUFFER_BIT) && _mesa_is_desktop_gl(ctx) && @@ -783,7 +772,7 @@ _mesa_meta_BlitFramebuffer(struct gl_context *ctx, } if (!use_glsl_version) - _mesa_set_enable(ctx, tex->Target, GL_FALSE); + _mesa_set_enable(ctx, depthTex->Target, GL_FALSE); _mesa_meta_end(ctx);