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authorBrian Paul <brian.paul@tungstengraphics.com>2004-12-16 02:14:19 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2004-12-16 02:14:19 +0000
commitc75900e7a2ad17ecf832e7e9aa41e714a1a78f2a (patch)
tree1782a2bfe2ef600ef105ead722968a1242c1dc50 /src/mesa/swrast
parentd16aa9859c9f5a3a7bf74a13dbbdd20688d3ad84 (diff)
don't divide texcoords by q if using a fragment program
Diffstat (limited to 'src/mesa/swrast')
-rw-r--r--src/mesa/swrast/s_pointtemp.h27
1 files changed, 19 insertions, 8 deletions
diff --git a/src/mesa/swrast/s_pointtemp.h b/src/mesa/swrast/s_pointtemp.h
index c564f2ee8e..25a6a31772 100644
--- a/src/mesa/swrast/s_pointtemp.h
+++ b/src/mesa/swrast/s_pointtemp.h
@@ -120,14 +120,25 @@ NAME ( GLcontext *ctx, const SWvertex *vert )
#endif
#if FLAGS & TEXTURE
span->arrayMask |= SPAN_TEXTURE;
- for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
- if (ctx->Texture._EnabledCoordUnits & (1 << u)) {
- const GLfloat q = vert->texcoord[u][3];
- const GLfloat invQ = (q == 0.0F || q == 1.0F) ? 1.0F : (1.0F / q);
- texcoord[u][0] = vert->texcoord[u][0] * invQ;
- texcoord[u][1] = vert->texcoord[u][1] * invQ;
- texcoord[u][2] = vert->texcoord[u][2] * invQ;
- texcoord[u][3] = q;
+ if (ctx->FragmentProgram._Enabled) {
+ /* Don't divide texture s,t,r by q (use TXP to do that) */
+ for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+ if (ctx->Texture._EnabledCoordUnits & (1 << u)) {
+ COPY_4V(texcoord[u], vert->texcoord[u]);
+ }
+ }
+ }
+ else {
+ /* Divide texture s,t,r by q here */
+ for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
+ if (ctx->Texture._EnabledCoordUnits & (1 << u)) {
+ const GLfloat q = vert->texcoord[u][3];
+ const GLfloat invQ = (q == 0.0F || q == 1.0F) ? 1.0F : (1.0F / q);
+ texcoord[u][0] = vert->texcoord[u][0] * invQ;
+ texcoord[u][1] = vert->texcoord[u][1] * invQ;
+ texcoord[u][2] = vert->texcoord[u][2] * invQ;
+ texcoord[u][3] = q;
+ }
}
}
/* need these for fragment programs */