i915: Map sampler indices to texture units correctly for fragment shaders.

Fixes hang with "gst-launch-0.10 videotestsrc ! video/x-raw-rgb !
glupload !  gleffects effect=heat ! glimagesink" which uses 2 samplers
pointing at GL_TEXTURE1 and GL_TEXTURE2, and piglit
glsl-fs-sampler-numbering.

diff --git a/src/mesa/drivers/dri/i915/i915_fragprog.c b/src/mesa/drivers/dri/i915/i915_fragprog.c
index 906d585..9f12e2c 100644 (file)
--- a/src/mesa/drivers/dri/i915/i915_fragprog.c
+++ b/src/mesa/drivers/dri/i915/i915_fragprog.c
@@ -255,8 +255,10 @@ translate_tex_src_target(struct i915_fragment_program *p, GLubyte bit)
 #define EMIT_TEX( OP )                                         \
 do {                                                           \
    GLuint dim = translate_tex_src_target( p, inst->TexSrcTarget );     \
+   const struct gl_fragment_program *program = p->ctx->FragmentProgram._Current; \
+   GLuint unit = program->Base.SamplerUnits[inst->TexSrcUnit]; \
    GLuint sampler = i915_emit_decl(p, REG_TYPE_S,              \
-                                 inst->TexSrcUnit, dim);       \
+                                  unit, dim);                  \
    GLuint coord = src_vector( p, &inst->SrcReg[0], program);   \
    /* Texel lookup */                                          \
                                                                \