diff options
author | Brian Paul <brianp@vmware.com> | 2009-08-05 14:13:48 -0600 |
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committer | Brian Paul <brianp@vmware.com> | 2009-08-05 14:13:48 -0600 |
commit | 1f713059934c2365a42aadfdca49213b36a7de90 (patch) | |
tree | e116f5f41dfde926be870dfc439a7dfbaa0ded06 /src/mesa/state_tracker/st_cb_blit.c | |
parent | 3905119b4743eb5d284236cc237ee2c19ae3c5c8 (diff) | |
parent | 5b3428d7453eec8e8a5344e22113774dea1dc456 (diff) |
Merge branch 'mesa_7_5_branch'
Conflicts:
src/mesa/main/state.c
Diffstat (limited to 'src/mesa/state_tracker/st_cb_blit.c')
-rw-r--r-- | src/mesa/state_tracker/st_cb_blit.c | 97 |
1 files changed, 85 insertions, 12 deletions
diff --git a/src/mesa/state_tracker/st_cb_blit.c b/src/mesa/state_tracker/st_cb_blit.c index 2852623472..c741940bcf 100644 --- a/src/mesa/state_tracker/st_cb_blit.c +++ b/src/mesa/state_tracker/st_cb_blit.c @@ -69,34 +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 */ - srcY0 = srcRb->Base.Height - srcY0; - srcY1 = srcRb->Base.Height - srcY1; - - dstY0 = dstRb->Base.Height - dstY0; - dstY1 = dstRb->Base.Height - dstY1; - } - 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"); + } + } } } |