diff options
Diffstat (limited to 'mesalib/src/mesa/program/prog_execute.c')
| -rw-r--r-- | mesalib/src/mesa/program/prog_execute.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/mesalib/src/mesa/program/prog_execute.c b/mesalib/src/mesa/program/prog_execute.c index dbfd1b918..77f842a16 100644 --- a/mesalib/src/mesa/program/prog_execute.c +++ b/mesalib/src/mesa/program/prog_execute.c @@ -639,7 +639,7 @@ _mesa_execute_program(struct gl_context * ctx, struct gl_program_machine *machine) { const GLuint numInst = program->NumInstructions; - const GLuint maxExec = 10000; + const GLuint maxExec = 65536; GLuint pc, numExec = 0; machine->CurProgram = program; @@ -1651,6 +1651,14 @@ _mesa_execute_program(struct gl_context * ctx, GLfloat texcoord[4], color[4]; fetch_vector4(&inst->SrcReg[0], machine, texcoord); + /* For TEX, texcoord.Q should not be used and its value should not + * matter (at most, we pass coord.xyz to texture3D() in GLSL). + * Set Q=1 so that FetchTexelDeriv() doesn't get a garbage value + * which is effectively what happens when the texcoord swizzle + * is .xyzz + */ + texcoord[3] = 1.0f; + fetch_texel(ctx, machine, inst, texcoord, 0.0, color); if (DEBUG_PROG) { |