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| author | Brian <brian.paul@tungstengraphics.com> | 2007-12-05 15:06:23 -0700 |
|---|---|---|
| committer | Brian <brian.paul@tungstengraphics.com> | 2007-12-05 15:06:23 -0700 |
| commit | 259eacfa94a1086e4c99db83516989cc27832ef4 (patch) | |
| tree | 5fa172444591b667b3b8e93b90628b638d1ea4bc /src | |
| parent | 2407e48f2805e27e76e2e1d7083926c4077d9032 (diff) | |
Fix endianness bug in _mesa_texstore_argb8888()
On big-endian, storing in _mesa_texformat_argb8888 format produced wrong res
Also, clean-up nearby code to match.
picked from gallium-0.1 branch
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/main/texstore.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/src/mesa/main/texstore.c b/src/mesa/main/texstore.c index 3b5151ed17..a8e639be6d 100644 --- a/src/mesa/main/texstore.c +++ b/src/mesa/main/texstore.c @@ -1443,7 +1443,6 @@ _mesa_texstore_argb8888(TEXSTORE_PARAMS) (baseInternalFormat == GL_RGBA || baseInternalFormat == GL_RGB) && srcType == GL_UNSIGNED_BYTE) { - int img, row, col; for (img = 0; img < srcDepth; img++) { const GLint srcRowStride = _mesa_image_row_stride(srcPacking, @@ -1455,11 +1454,12 @@ _mesa_texstore_argb8888(TEXSTORE_PARAMS) + dstYoffset * dstRowStride + dstXoffset * dstFormat->TexelBytes; for (row = 0; row < srcHeight; row++) { + GLuint *d4 = (GLuint *) dstRow; for (col = 0; col < srcWidth; col++) { - dstRow[col * 4 + 0] = srcRow[col * 3 + BCOMP]; - dstRow[col * 4 + 1] = srcRow[col * 3 + GCOMP]; - dstRow[col * 4 + 2] = srcRow[col * 3 + RCOMP]; - dstRow[col * 4 + 3] = 0xff; + d4[col] = ((0xff << 24) | + (srcRow[col * 3 + RCOMP] << 16) | + (srcRow[col * 3 + GCOMP] << 8) | + (srcRow[col * 3 + BCOMP] << 0)); } dstRow += dstRowStride; srcRow += srcRowStride; @@ -1471,7 +1471,9 @@ _mesa_texstore_argb8888(TEXSTORE_PARAMS) dstFormat == &_mesa_texformat_argb8888 && srcFormat == GL_RGBA && baseInternalFormat == GL_RGBA && - (srcType == GL_UNSIGNED_BYTE && littleEndian)) { + srcType == GL_UNSIGNED_BYTE && + littleEndian) { + /* same as above case, but src data has alpha too */ GLint img, row, col; /* For some reason, streaming copies to write-combined regions * are extremely sensitive to the characteristics of how the @@ -1488,13 +1490,13 @@ _mesa_texstore_argb8888(TEXSTORE_PARAMS) + dstImageOffsets[dstZoffset + img] * dstFormat->TexelBytes + dstYoffset * dstRowStride + dstXoffset * dstFormat->TexelBytes; - for (row = 0; row < srcHeight; row++) { + GLuint *d4 = (GLuint *) dstRow; for (col = 0; col < srcWidth; col++) { - *(GLuint *)(dstRow + col * 4) = (srcRow[col * 4 + RCOMP] << 16 | - srcRow[col * 4 + GCOMP] << 8 | - srcRow[col * 4 + BCOMP] << 0 | - srcRow[col * 4 + ACOMP] << 24); + d4[col] = ((srcRow[col * 4 + ACOMP] << 24) | + (srcRow[col * 4 + RCOMP] << 16) | + (srcRow[col * 4 + GCOMP] << 8) | + (srcRow[col * 4 + BCOMP] << 0)); } dstRow += dstRowStride; srcRow += srcRowStride; |