From 244a02c47d0de860db4183212f8a33c2c02d95db Mon Sep 17 00:00:00 2001 From: Chad Versace Date: Mon, 10 Oct 2011 15:07:14 -0700 Subject: swrast: Fix fastpaths in glRead/WritePixels(GL_DEPTH_STENCIL) For glReadPixels, the user supplied pixels have format GL_UNSIGNED_INT_24_8. But, when the depthstencil buffer's format was MESA_FORMAT_S8_Z24, the fastpath read from the buffer without reordering the depth and stencil bits. To fix this, this patch just skips the fastpath when the format is not MESA_FORMAT_Z24_S8. The problem and fix for glWritePixels is analagous. Fixes the Piglit tests below on i965/gen6 and causes no regressions. general/depthstencil-default_fb-drawpixels-24_8 general/depthstencil-default_fb-readpixels-24_8 EXT_packed_depth_stencil/fbo-depthstencil-GL_DEPTH24_STENCIL8-drawpixels-24_8 EXT_packed_depth_stencil/fbo-depthstencil-GL_DEPTH24_STENCIL8-readpixels-24_8 Note: This is a candidate for the stable branches. Reviewed-by: Brian Paul Signed-off-by: Chad Versace --- src/mesa/swrast/s_drawpix.c | 2 ++ src/mesa/swrast/s_readpix.c | 2 ++ 2 files changed, 4 insertions(+) (limited to 'src/mesa/swrast') diff --git a/src/mesa/swrast/s_drawpix.c b/src/mesa/swrast/s_drawpix.c index 63bfa79b513..55b31df5dd3 100644 --- a/src/mesa/swrast/s_drawpix.c +++ b/src/mesa/swrast/s_drawpix.c @@ -591,6 +591,8 @@ draw_depth_stencil_pixels(struct gl_context *ctx, GLint x, GLint y, if (depthRb->_BaseFormat == GL_DEPTH_STENCIL_EXT && stencilRb->_BaseFormat == GL_DEPTH_STENCIL_EXT && + depthRb->Format == MESA_FORMAT_Z24_S8 && + type == GL_UNSIGNED_INT_24_8 && depthRb == stencilRb && !scaleOrBias && !zoom && diff --git a/src/mesa/swrast/s_readpix.c b/src/mesa/swrast/s_readpix.c index 6eec2fc782d..0f1f0ff58f6 100644 --- a/src/mesa/swrast/s_readpix.c +++ b/src/mesa/swrast/s_readpix.c @@ -392,6 +392,8 @@ read_depth_stencil_pixels(struct gl_context *ctx, if (depthRb->_BaseFormat == GL_DEPTH_STENCIL_EXT && stencilRb->_BaseFormat == GL_DEPTH_STENCIL_EXT && + depthRb->Format == MESA_FORMAT_Z24_S8 && + type == GL_UNSIGNED_INT_24_8 && depthRb == stencilRb && !scaleOrBias && !stencilTransfer) { -- cgit v1.2.3