Mesa (mesa_7_5_branch): mesa: Enable uploads of only depth to z24s8 textures
Jakob Bornecrantz
wallbraker at kemper.freedesktop.org
Fri Jun 12 11:33:23 UTC 2009
Module: Mesa
Branch: mesa_7_5_branch
Commit: c6de08fff483911953692693c501bc200c235dce
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=c6de08fff483911953692693c501bc200c235dce
Author: Jakob Bornecrantz <jakob at vmware.com>
Date: Thu Jun 11 19:26:55 2009 +0100
mesa: Enable uploads of only depth to z24s8 textures
---
src/mesa/main/texstore.c | 39 ++++++++++++++++++++++++++++++++++++---
1 files changed, 36 insertions(+), 3 deletions(-)
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c
index f3739f9..bfced1b 100644
--- a/src/mesa/main/texstore.c
+++ b/src/mesa/main/texstore.c
@@ -2689,12 +2689,45 @@ GLboolean
_mesa_texstore_z24_s8(TEXSTORE_PARAMS)
{
const GLfloat depthScale = (GLfloat) 0xffffff;
+ const GLint srcRowStride
+ = _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType)
+ / sizeof(GLuint);
+ GLint img, row;
ASSERT(dstFormat == &_mesa_texformat_z24_s8);
- ASSERT(srcFormat == GL_DEPTH_STENCIL_EXT);
- ASSERT(srcType == GL_UNSIGNED_INT_24_8_EXT);
+ ASSERT(srcFormat == GL_DEPTH_STENCIL_EXT || srcFormat == GL_DEPTH_COMPONENT);
+ ASSERT(srcFormat != GL_DEPTH_STENCIL_EXT || srcType == GL_UNSIGNED_INT_24_8_EXT);
- if (ctx->Pixel.DepthScale == 1.0f &&
+ /* In case we only upload depth we need to preserve the stencil */
+ if (srcFormat == GL_DEPTH_COMPONENT) {
+ for (img = 0; img < srcDepth; img++) {
+ GLuint *dstRow = (GLuint *) dstAddr
+ + dstImageOffsets[dstZoffset + img]
+ + dstYoffset * dstRowStride / sizeof(GLuint)
+ + dstXoffset;
+ const GLuint *src
+ = (const GLuint *) _mesa_image_address(dims, srcPacking, srcAddr,
+ srcWidth, srcHeight,
+ srcFormat, srcType,
+ img, 0, 0);
+ for (row = 0; row < srcHeight; row++) {
+ GLuint depth[MAX_WIDTH];
+ GLint i;
+ _mesa_unpack_depth_span(ctx, srcWidth,
+ GL_UNSIGNED_INT, /* dst type */
+ depth, /* dst addr */
+ depthScale,
+ srcType, src, srcPacking);
+
+ for (i = 0; i < srcWidth; i++)
+ dstRow[i] = depth[i] << 8 | (dstRow[i] & 0x000000FF);
+
+ src += srcRowStride;
+ dstRow += dstRowStride / sizeof(GLuint);
+ }
+ }
+ }
+ else if (ctx->Pixel.DepthScale == 1.0f &&
ctx->Pixel.DepthBias == 0.0f &&
!srcPacking->SwapBytes) {
/* simple path */
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