Module: Mesa Branch: master Commit: fdd605e446ed174bae13171d116f498704259057 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=fdd605e446ed174bae13171d116f498704259057
Author: José Fonseca <[email protected]> Date: Sat Sep 19 14:33:35 2009 +0100 mesa: Allow BlitFramebuffer from a texture. Although GL_EXT_framebuffer_blit does not mention textures, it doesn't forbid them either, and some thirdparty driver appear to support this. --- src/mesa/state_tracker/st_cb_blit.c | 56 ++++++++++++++++++++++++++++------- 1 files changed, 45 insertions(+), 11 deletions(-) diff --git a/src/mesa/state_tracker/st_cb_blit.c b/src/mesa/state_tracker/st_cb_blit.c index c741940..5626e25 100644 --- a/src/mesa/state_tracker/st_cb_blit.c +++ b/src/mesa/state_tracker/st_cb_blit.c @@ -39,6 +39,7 @@ #include "shader/prog_print.h" #include "st_context.h" +#include "st_texture.h" #include "st_program.h" #include "st_cb_blit.h" #include "st_cb_fbo.h" @@ -110,17 +111,50 @@ st_BlitFramebuffer(GLcontext *ctx, } if (mask & GL_COLOR_BUFFER_BIT) { - struct st_renderbuffer *srcRb = - st_renderbuffer(readFB->_ColorReadBuffer); - struct st_renderbuffer *dstRb = - st_renderbuffer(drawFB->_ColorDrawBuffers[0]); - struct pipe_surface *srcSurf = srcRb->surface; - struct pipe_surface *dstSurf = dstRb->surface; - - util_blit_pixels(st->blit, - srcSurf, srcX0, srcY0, srcX1, srcY1, - dstSurf, dstX0, dstY0, dstX1, dstY1, - 0.0, pFilter); + struct gl_renderbuffer_attachment *srcAtt = + &readFB->Attachment[readFB->_ColorReadBufferIndex]; + + if(srcAtt->Type == GL_TEXTURE) { + struct pipe_screen *screen = ctx->st->pipe->screen; + const struct st_texture_object *srcObj = + st_texture_object(srcAtt->Texture); + struct st_renderbuffer *dstRb = + st_renderbuffer(drawFB->_ColorDrawBuffers[0]); + struct pipe_surface *srcSurf; + struct pipe_surface *dstSurf = dstRb->surface; + + if (!srcObj->pt) + return; + + srcSurf = screen->get_tex_surface(screen, + srcObj->pt, + srcAtt->CubeMapFace, + srcAtt->TextureLevel, + srcAtt->Zoffset, + PIPE_BUFFER_USAGE_GPU_READ); + if(!srcSurf) + return; + + util_blit_pixels(st->blit, + srcSurf, srcX0, srcY0, srcX1, srcY1, + dstSurf, dstX0, dstY0, dstX1, dstY1, + 0.0, pFilter); + + pipe_surface_reference(&srcSurf, NULL); + } + else { + struct st_renderbuffer *srcRb = + st_renderbuffer(readFB->_ColorReadBuffer); + struct st_renderbuffer *dstRb = + st_renderbuffer(drawFB->_ColorDrawBuffers[0]); + struct pipe_surface *srcSurf = srcRb->surface; + struct pipe_surface *dstSurf = dstRb->surface; + + util_blit_pixels(st->blit, + srcSurf, srcX0, srcY0, srcX1, srcY1, + dstSurf, dstX0, dstY0, dstX1, dstY1, + 0.0, pFilter); + } } if (mask & depthStencil) { _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
