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-rw-r--r--mesalib/src/mesa/shader/program_parse_extra.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/mesalib/src/mesa/shader/program_parse_extra.c b/mesalib/src/mesa/shader/program_parse_extra.c
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+/*
+ * 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 <ian.d.romanick@intel.com>
+ */
+
+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) {
+ /* Don't need to check extension availability because all Mesa-based
+ * drivers support GL_ARB_draw_buffers.
+ */
+ state->option.DrawBuffers = 1;
+ return 1;
+ } else if (strcmp(option, "fragment_program_shadow") == 0) {
+ if (state->ctx->Extensions.ARB_fragment_program_shadow) {
+ state->option.Shadow = 1;
+ return 1;
+ }
+ }
+ } else if (strncmp(option, "MESA_", 5) == 0) {
+ option += 5;
+
+ if (strcmp(option, "texture_array") == 0) {
+ if (state->ctx->Extensions.MESA_texture_array) {
+ state->option.TexArray = 1;
+ return 1;
+ }
+ }
+ }
+
+ return 0;
+}