mesa: support for GL_ARB_fragment_coord_conventions

Signed-off-by: Brian Paul <[email protected]>

3 files changed, 16 insertions, 0 deletions

diff --git a/src/mesa/shader/arbprogparse.c b/src/mesa/shader/arbprogparse.c
index a09be71020e..3e22a8a3057 100644
--- a/src/mesa/shader/arbprogparse.c
+++ b/src/mesa/shader/arbprogparse.c
@@ -123,6 +123,8 @@ _mesa_parse_arb_fragment_program(GLcontext* ctx, GLenum target,
    case OPTION_FOG_LINEAR: program->FogOption = GL_LINEAR; break;
    default:                program->FogOption = GL_NONE;   break;
    }
+   program->OriginUpperLeft = state.option.OriginUpperLeft;
+   program->PixelCenterInteger = state.option.PixelCenterInteger;
 
    program->UsesKill            = state.fragment.UsesKill;
 
diff --git a/src/mesa/shader/program_parse_extra.c b/src/mesa/shader/program_parse_extra.c
index 0656c5eaa8e..ae98b782b70 100644
--- a/src/mesa/shader/program_parse_extra.c
+++ b/src/mesa/shader/program_parse_extra.c
@@ -216,6 +216,18 @@ _mesa_ARBfp_parse_option(struct asm_parser_state *state, const char *option)
 	    state->option.Shadow = 1;
 	    return 1;
 	 }
+      } else if (strncmp(option, "fragment_coord_", 15) == 0) {
+         option += 15;
+         if (state->ctx->Extensions.ARB_fragment_coord_conventions) {
+            if (strcmp(option, "origin_upper_left") == 0) {
+               state->option.OriginUpperLeft = 1;
+               return 1;
+            }
+            else if (strcmp(option, "pixel_center_integer") == 0) {
+               state->option.PixelCenterInteger = 1;
+               return 1;
+            }
+         }
       }
    } else if (strncmp(option, "NV_fragment_program", 19) == 0) {
       option += 19;
diff --git a/src/mesa/shader/program_parser.h b/src/mesa/shader/program_parser.h
index 69396ca2c0f..730466c30f5 100644
--- a/src/mesa/shader/program_parser.h
+++ b/src/mesa/shader/program_parser.h
@@ -209,6 +209,8 @@ struct asm_parser_state {
       unsigned TexRect:1;
       unsigned TexArray:1;
       unsigned NV_fragment:1;
+      unsigned OriginUpperLeft:1;
+      unsigned PixelCenterInteger:1;
    } option;
 
    struct {