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| author | Brian <brian.paul@tungstengraphics.com> | 2007-10-18 10:42:47 -0600 |
|---|---|---|
| committer | Brian <brian.paul@tungstengraphics.com> | 2007-10-18 11:41:12 -0600 |
| commit | 5bd119f9438b680f5e42458ef0b250662af36235 (patch) | |
| tree | a1fdc0b9804c9b1ad18f57e391be07af49ad6bd0 | |
| parent | 66586762f1d2a3a310cf83e177d3c659a93486c8 (diff) | |
handle fogcoord/raster distance
| -rw-r--r-- | src/mesa/state_tracker/st_cb_rasterpos.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/src/mesa/state_tracker/st_cb_rasterpos.c b/src/mesa/state_tracker/st_cb_rasterpos.c index eb6ee51939..40807fc05a 100644 --- a/src/mesa/state_tracker/st_cb_rasterpos.c +++ b/src/mesa/state_tracker/st_cb_rasterpos.c @@ -187,6 +187,7 @@ update_rasterpos(GLcontext *ctx, const float clipPos[4], const float color0[4], const float color1[4], + const float *fog, const float *tex) { uint i; @@ -232,15 +233,17 @@ update_rasterpos(GLcontext *ctx, ctx->Current.RasterPos[3] = clipPos[3]; /* compute raster distance */ +#if 0 if (ctx->Fog.FogCoordinateSource == GL_FOG_COORDINATE_EXT) ctx->Current.RasterDistance = ctx->Current.Attrib[VERT_ATTRIB_FOG][0]; else { -#if 0 /* XXX we don't have an eye coord! */ ctx->Current.RasterDistance = SQRTF( eye[0]*eye[0] + eye[1]*eye[1] + eye[2]*eye[2] ); -#endif } +#else + ctx->Current.RasterDistance = fog[0]; +#endif /* colors and texcoords */ COPY_4FV(ctx->Current.RasterColor, color0); @@ -314,7 +317,7 @@ st_RasterPos(GLcontext *ctx, const GLfloat v[4]) /* extract values and update rasterpos state */ { const GLuint *outputMapping = st->vertex_result_to_slot; - const float *pos, *color0, *color1, *tex0; + const float *pos, *color0, *color1, *fog, *tex0; float *buf = buf_map; assert(outputMapping[VERT_RESULT_HPOS] != ~0); @@ -337,6 +340,14 @@ st_RasterPos(GLcontext *ctx, const GLfloat v[4]) color1 = ctx->Current.Attrib[VERT_ATTRIB_COLOR1]; } + if (outputMapping[VERT_RESULT_FOGC] != ~0) { + fog = buf; + buf += 4; + } + else { + fog = ctx->Current.Attrib[VERT_ATTRIB_FOG]; + } + if (outputMapping[VERT_RESULT_TEX0] != ~0) { tex0 = buf; buf += 4; @@ -345,7 +356,7 @@ st_RasterPos(GLcontext *ctx, const GLfloat v[4]) tex0 = ctx->Current.Attrib[VERT_ATTRIB_TEX0]; } - update_rasterpos(ctx, pos, color0, color1, tex0); + update_rasterpos(ctx, pos, color0, color1, fog, tex0); } /* free vertex feedback buffer */ |