This fixes a problem when glDrawBuffers(GL_NONE). The fragment program
was writing to color output[0] but OutputsWritten was 0. That led to a
failed assertion in the Mesa->TGSI translation code.
NOTE: This is a candidate for the 7.9 and 7.10 branches.
p.last_tex_stage = 0;
release_temps(ctx, &p);
- if (key->enabled_units) {
+ if (key->enabled_units && key->num_draw_buffers) {
GLboolean needbumpstage = GL_FALSE;
/* Zeroth pass - bump map textures first */
_mesa_copy_instructions(p.program->Base.Instructions, instBuffer,
p.program->Base.NumInstructions);
- if (p.program->FogOption) {
+ if (key->num_draw_buffers && p.program->FogOption) {
_mesa_append_fog_code(ctx, p.program);
p.program->FogOption = GL_NONE;
}