From c75900e7a2ad17ecf832e7e9aa41e714a1a78f2a Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Thu, 16 Dec 2004 02:14:19 +0000 Subject: [PATCH] don't divide texcoords by q if using a fragment program --- src/mesa/swrast/s_pointtemp.h | 27 +++++++++++++++++++-------- 1 file changed, 19 insertions(+), 8 deletions(-) diff --git a/src/mesa/swrast/s_pointtemp.h b/src/mesa/swrast/s_pointtemp.h index c564f2e..25a6a31 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 */ -- 2.7.4