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swrast: fix texel decoding in opt_sample_rgba_2d()

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This commit is contained in:
Brian Paul 2009-10-28 19:38:12 -06:00
parent 7ac233ec15
commit 1e7517f059
1 changed files with 5 additions and 5 deletions
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10
src/mesa/swrast/s_texfilter.c
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@ -1391,11 +1391,11 @@ opt_sample_rgba_2d(GLcontext *ctx,
const GLint col = IFLOOR(texcoords[i][0] * width) & colMask;
const GLint row = IFLOOR(texcoords[i][1] * height) & rowMask;
const GLint pos = (row << shift) | col;
const GLubyte *texel = ((GLubyte *) img->Data) + (pos << 2); /* pos*4 */
rgba[i][RCOMP] = UBYTE_TO_FLOAT(texel[3]);
rgba[i][GCOMP] = UBYTE_TO_FLOAT(texel[2]);
rgba[i][BCOMP] = UBYTE_TO_FLOAT(texel[1]);
rgba[i][ACOMP] = UBYTE_TO_FLOAT(texel[0]);
const GLuint texel = *((GLuint *) img->Data + pos);
rgba[i][RCOMP] = UBYTE_TO_FLOAT( (texel >> 24) );
rgba[i][GCOMP] = UBYTE_TO_FLOAT( (texel >> 16) & 0xff );
rgba[i][BCOMP] = UBYTE_TO_FLOAT( (texel >> 8) & 0xff );
rgba[i][ACOMP] = UBYTE_TO_FLOAT( (texel ) & 0xff );
}
}