glsl: process blend_support_* qualifiers

[mesa.git] / src / compiler / glsl / glsl_parser.yy

diff --git a/src/compiler/glsl/glsl_parser.yy b/src/compiler/glsl/glsl_parser.yy
index f2853da08481b0096700a85a580e5f9c17e1b601..4043dae5e1ac708194e96de78be4334e37033a08 100644 (file)
--- a/src/compiler/glsl/glsl_parser.yy
+++ b/src/compiler/glsl/glsl_parser.yy
@@ -1446,6 +1446,51 @@ layout_qualifier_id:
          }
       }
 
+      if (!$$.flags.i) {
+         static const struct {
+            const char *s;
+            uint32_t mask;
+         } map[] = {
+                 { "blend_support_multiply",       BLEND_MULTIPLY },
+                 { "blend_support_screen",         BLEND_SCREEN },
+                 { "blend_support_overlay",        BLEND_OVERLAY },
+                 { "blend_support_darken",         BLEND_DARKEN },
+                 { "blend_support_lighten",        BLEND_LIGHTEN },
+                 { "blend_support_colordodge",     BLEND_COLORDODGE },
+                 { "blend_support_colorburn",      BLEND_COLORBURN },
+                 { "blend_support_hardlight",      BLEND_HARDLIGHT },
+                 { "blend_support_softlight",      BLEND_SOFTLIGHT },
+                 { "blend_support_difference",     BLEND_DIFFERENCE },
+                 { "blend_support_exclusion",      BLEND_EXCLUSION },
+                 { "blend_support_hsl_hue",        BLEND_HSL_HUE },
+                 { "blend_support_hsl_saturation", BLEND_HSL_SATURATION },
+                 { "blend_support_hsl_color",      BLEND_HSL_COLOR },
+                 { "blend_support_hsl_luminosity", BLEND_HSL_LUMINOSITY },
+                 { "blend_support_all_equations",  BLEND_ALL },
+         };
+         for (unsigned i = 0; i < ARRAY_SIZE(map); i++) {
+            if (match_layout_qualifier($1, map[i].s, state) == 0) {
+               $$.flags.q.blend_support = 1;
+               state->fs_blend_support |= map[i].mask;
+               break;
+            }
+         }
+
+         if ($$.flags.i &&
+             !state->KHR_blend_equation_advanced_enable &&
+             !state->is_version(0, 320)) {
+            _mesa_glsl_error(& @1, state,
+                             "advanced blending layout qualifiers require "
+                             "ESSL 3.20 or KHR_blend_equation_advanced");
+         }
+
+         if ($$.flags.i && state->stage != MESA_SHADER_FRAGMENT) {
+            _mesa_glsl_error(& @1, state,
+                             "advanced blending layout qualifiers only "
+                             "valid in fragment shaders");
+         }
+      }
+
       if (!$$.flags.i) {
          _mesa_glsl_error(& @1, state, "unrecognized layout identifier "
                           "`%s'", $1);