diff options
| -rw-r--r-- | src/mesa/state_tracker/st_cb_blit.c | 109 |
1 files changed, 80 insertions, 29 deletions
diff --git a/src/mesa/state_tracker/st_cb_blit.c b/src/mesa/state_tracker/st_cb_blit.c index 98610473b31..c741940bcf4 100644 --- a/src/mesa/state_tracker/st_cb_blit.c +++ b/src/mesa/state_tracker/st_cb_blit.c @@ -69,56 +69,107 @@ st_BlitFramebuffer(GLcontext *ctx, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter) { + const GLbitfield depthStencil = (GL_DEPTH_BUFFER_BIT | + GL_STENCIL_BUFFER_BIT); struct st_context *st = ctx->st; - const uint pFilter = ((filter == GL_NEAREST) ? PIPE_TEX_MIPFILTER_NEAREST : PIPE_TEX_MIPFILTER_LINEAR); + struct gl_framebuffer *readFB = ctx->ReadBuffer; + struct gl_framebuffer *drawFB = ctx->DrawBuffer; if (!_mesa_clip_blit(ctx, &srcX0, &srcY0, &srcX1, &srcY1, &dstX0, &dstY0, &dstX1, &dstY1)) { return; /* nothing to draw/blit */ } + if (st_fb_orientation(drawFB) == Y_0_TOP) { + /* invert Y for dest */ + dstY0 = drawFB->Height - dstY0; + dstY1 = drawFB->Height - dstY1; + } + + if (st_fb_orientation(readFB) == Y_0_TOP) { + /* invert Y for src */ + srcY0 = readFB->Height - srcY0; + srcY1 = readFB->Height - srcY1; + } + + if (srcY0 > srcY1 && dstY0 > dstY1) { + /* Both src and dst are upside down. Swap Y to make it + * right-side up to increase odds of using a fast path. + * Recall that all Gallium raster coords have Y=0=top. + */ + GLint tmp; + tmp = srcY0; + srcY0 = srcY1; + srcY1 = tmp; + tmp = dstY0; + dstY0 = dstY1; + dstY1 = tmp; + } + if (mask & GL_COLOR_BUFFER_BIT) { struct st_renderbuffer *srcRb = - st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer); + st_renderbuffer(readFB->_ColorReadBuffer); struct st_renderbuffer *dstRb = - st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); + st_renderbuffer(drawFB->_ColorDrawBuffers[0]); struct pipe_surface *srcSurf = srcRb->surface; struct pipe_surface *dstSurf = dstRb->surface; - if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { - /* invert Y for dest */ - dstY0 = dstRb->Base.Height - dstY0; - dstY1 = dstRb->Base.Height - dstY1; - } - - if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { - /* invert Y for src */ - srcY0 = srcRb->Base.Height - srcY0; - srcY1 = srcRb->Base.Height - srcY1; - } - - if (srcY0 > srcY1 && dstY0 > dstY1) { - /* Both src and dst are upside down. Swap Y to make it - * right-side up to increase odds of using a fast path. - * Recall that all Gallium raster coords have Y=0=top. - */ - GLint tmp; - tmp = srcY0; - srcY0 = srcY1; - srcY1 = tmp; - tmp = dstY0; - dstY0 = dstY1; - dstY1 = tmp; - } - util_blit_pixels(st->blit, srcSurf, srcX0, srcY0, srcX1, srcY1, dstSurf, dstX0, dstY0, dstX1, dstY1, 0.0, pFilter); + } + if (mask & depthStencil) { + /* depth and/or stencil blit */ + + /* get src/dst depth surfaces */ + struct st_renderbuffer *srcDepthRb = + st_renderbuffer(readFB->Attachment[BUFFER_DEPTH].Renderbuffer); + struct st_renderbuffer *dstDepthRb = + st_renderbuffer(drawFB->Attachment[BUFFER_DEPTH].Renderbuffer); + struct pipe_surface *srcDepthSurf = + srcDepthRb ? srcDepthRb->surface : NULL; + struct pipe_surface *dstDepthSurf = + dstDepthRb ? dstDepthRb->surface : NULL; + + /* get src/dst stencil surfaces */ + struct st_renderbuffer *srcStencilRb = + st_renderbuffer(readFB->Attachment[BUFFER_STENCIL].Renderbuffer); + struct st_renderbuffer *dstStencilRb = + st_renderbuffer(drawFB->Attachment[BUFFER_STENCIL].Renderbuffer); + struct pipe_surface *srcStencilSurf = + srcStencilRb ? srcStencilRb->surface : NULL; + struct pipe_surface *dstStencilSurf = + dstStencilRb ? dstStencilRb->surface : NULL; + + if ((mask & depthStencil) == depthStencil && + srcDepthSurf == srcStencilSurf && + dstDepthSurf == dstStencilSurf) { + /* Blitting depth and stencil values between combined + * depth/stencil buffers. This is the ideal case for such buffers. + */ + util_blit_pixels(st->blit, + srcDepthSurf, srcX0, srcY0, srcX1, srcY1, + dstDepthSurf, dstX0, dstY0, dstX1, dstY1, + 0.0, pFilter); + } + else { + /* blitting depth and stencil separately */ + + if (mask & GL_DEPTH_BUFFER_BIT) { + /* blit Z only */ + _mesa_problem(ctx, "st_BlitFramebuffer(DEPTH) not completed"); + } + + if (mask & GL_STENCIL_BUFFER_BIT) { + /* blit stencil only */ + _mesa_problem(ctx, "st_BlitFramebuffer(STENCIL) not completed"); + } + } } } |