fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-05 09:38:07 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

swrast: fix incorrect arithmetic for GL_ADD_SIGNED/GL_COMBINE4_NV mode

Browse source
This commit is contained in:
Brian Paul 2009-04-06 14:38:09 -06:00
parent 89276e2aaf
commit 87c356a222
1 changed files with 6 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
src/mesa/swrast/s_texcombine.c
View file

@ -316,12 +316,12 @@ texture_combine( const GLcontext *ctx, GLuint unit, GLuint n,
if (textureUnit->EnvMode == GL_COMBINE4_NV) {
/* (a * b) + (c * d) - 0.5 */
for (i = 0; i < n; i++) {
rgba[i][RCOMP] = (arg0[i][RCOMP] + arg1[i][RCOMP] *
arg2[i][RCOMP] + arg3[i][RCOMP] - 0.5) * scaleRGB;
rgba[i][GCOMP] = (arg0[i][GCOMP] + arg1[i][GCOMP] *
arg2[i][GCOMP] + arg3[i][GCOMP] - 0.5) * scaleRGB;
rgba[i][BCOMP] = (arg0[i][BCOMP] + arg1[i][BCOMP] *
arg2[i][BCOMP] + arg3[i][BCOMP] - 0.5) * scaleRGB;
rgba[i][RCOMP] = (arg0[i][RCOMP] * arg1[i][RCOMP] +
arg2[i][RCOMP] * arg3[i][RCOMP] - 0.5) * scaleRGB;
rgba[i][GCOMP] = (arg0[i][GCOMP] * arg1[i][GCOMP] +
arg2[i][GCOMP] * arg3[i][GCOMP] - 0.5) * scaleRGB;
rgba[i][BCOMP] = (arg0[i][BCOMP] * arg1[i][BCOMP] +
arg2[i][BCOMP] * arg3[i][BCOMP] - 0.5) * scaleRGB;
}
}
else {