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mesa: Enable uploads of only depth to z24s8 textures

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This commit is contained in:
Jakob Bornecrantz 2009-06-11 19:26:55 +01:00
parent 3754c4135c
commit c6de08fff4
1 changed files with 36 additions and 3 deletions
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39
src/mesa/main/texstore.c
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@ -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 */