ARB_fp/vp: Initial import of new ARB vp/fp assembler

This still needs quite a bit of work, but a bunch of the programs in progs/vp
produce correct results.

1 files changed, 109 insertions, 0 deletions

diff --git a/src/mesa/shader/program_parse_extra.c b/src/mesa/shader/program_parse_extra.c
new file mode 100644
index 00000000000..b365267d4d7
--- /dev/null
+++ b/src/mesa/shader/program_parse_extra.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright © 2009 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <string.h>
+#include "main/mtypes.h"
+#include "prog_instruction.h"
+#include "program_parser.h"
+
+
+/**
+ * Extra assembly-level parser routines
+ *
+ * \author Ian Romanick <[email protected]>
+ */
+
+int
+_mesa_ARBvp_parse_option(struct asm_parser_state *state, const char *option)
+{
+   if (strcmp(option, "ARB_position_invariant") == 0) {
+      state->option.PositionInvariant = 1;
+      return 1;
+   }
+
+   return 0;
+}
+
+
+int
+_mesa_ARBfp_parse_option(struct asm_parser_state *state, const char *option)
+{
+   /* All of the options currently supported start with "ARB_".  The code is
+    * currently structured with nested if-statements because eventually options
+    * that start with "NV_" will be supported.  This structure will result in
+    * less churn when those options are added.
+    */
+   if (strncmp(option, "ARB_", 4) == 0) {
+      /* Advance the pointer past the "ARB_" prefix.
+       */
+      option += 4;
+
+
+      if (strncmp(option, "fog_", 4) == 0) {
+	 option += 4;
+
+	 if (state->option.Fog == OPTION_NONE) {
+	    if (strcmp(option, "exp") == 0) {
+	       state->option.Fog = OPTION_FOG_EXP;
+	       return 1;
+	    } else if (strcmp(option, "exp2") == 0) {
+	       state->option.Fog = OPTION_FOG_EXP2;
+	       return 1;
+	    } else if (strcmp(option, "linear") == 0) {
+	       state->option.Fog = OPTION_FOG_LINEAR;
+	       return 1;
+	    }
+	 }
+
+	 return 0;
+      } else if (strncmp(option, "precision_hint_", 15) == 0) {
+	 option += 15;
+
+	 if (state->option.PrecisionHint == OPTION_NONE) {
+	    if (strcmp(option, "nicest") == 0) {
+	       state->option.PrecisionHint = OPTION_NICEST;
+	       return 1;
+	    } else if (strcmp(option, "fastest") == 0) {
+	       state->option.PrecisionHint = OPTION_FASTEST;
+	       return 1;
+	    }
+	 }
+
+	 return 0;
+      } else if (strcmp(option, "draw_buffers") == 0) {
+	 /* FINISHME: This should validate that the driver support the
+	  * FINISHME: GL_ARB_draw_buffers extension.
+	  */
+	 state->option.DrawBuffers = 1;
+	 return 1;
+      } else if (strcmp(option, "fragment_program_shadow") == 0) {
+	 /* FINISHME: This should validate that the driver support the
+	  * FINISHME: GL_ARB_fragment_program_shadow extension.
+	  */
+	 state->option.Shadow = 1;
+	 return 1;
+      }
+   }
+
+   return 0;
+}