st/mesa: Treat vertex outputs absent in outputMapping as zero in mesa_to_tgsi

[mesa.git] / src / mesa / state_tracker / st_glsl_to_ir.cpp

diff --git a/src/mesa/state_tracker/st_glsl_to_ir.cpp b/src/mesa/state_tracker/st_glsl_to_ir.cpp
index e450fec6d99275e09de225fa5cd74ceb515d2562..5025eaa7a7bb95e8e2d3e2e3418aa379ecc41a8a 100644 (file)
--- a/src/mesa/state_tracker/st_glsl_to_ir.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_ir.cpp
@@ -122,7 +122,7 @@ st_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
          lower_offset_arrays(ir);
       do_mat_op_to_vec(ir);
 
-      if (stage == MESA_SHADER_FRAGMENT)
+      if (stage == MESA_SHADER_FRAGMENT && pscreen->get_param(pscreen, PIPE_CAP_FBFETCH))
          lower_blend_equation_advanced(
             shader, ctx->Extensions.KHR_blend_equation_advanced_coherent);