diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/state_tracker/st_cb_blit.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/src/mesa/state_tracker/st_cb_blit.c b/src/mesa/state_tracker/st_cb_blit.c index 28526234720..98610473b31 100644 --- a/src/mesa/state_tracker/st_cb_blit.c +++ b/src/mesa/state_tracker/st_cb_blit.c @@ -75,6 +75,11 @@ st_BlitFramebuffer(GLcontext *ctx, ? PIPE_TEX_MIPFILTER_NEAREST : PIPE_TEX_MIPFILTER_LINEAR); + if (!_mesa_clip_blit(ctx, &srcX0, &srcY0, &srcX1, &srcY1, + &dstX0, &dstY0, &dstX1, &dstY1)) { + return; /* nothing to draw/blit */ + } + if (mask & GL_COLOR_BUFFER_BIT) { struct st_renderbuffer *srcRb = st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer); @@ -84,12 +89,29 @@ st_BlitFramebuffer(GLcontext *ctx, struct pipe_surface *dstSurf = dstRb->surface; if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { - /* invert Y */ + /* 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; + } - dstY0 = dstRb->Base.Height - dstY0; - dstY1 = dstRb->Base.Height - dstY1; + 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, |