summaryrefslogtreecommitdiff
path: root/src/mesa/main/nvfragparse.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/main/nvfragparse.c')
-rw-r--r--src/mesa/main/nvfragparse.c120
1 files changed, 112 insertions, 8 deletions
diff --git a/src/mesa/main/nvfragparse.c b/src/mesa/main/nvfragparse.c
index 0f75d6c36f..ff546db612 100644
--- a/src/mesa/main/nvfragparse.c
+++ b/src/mesa/main/nvfragparse.c
@@ -1,4 +1,4 @@
-/* $Id: nvfragparse.c,v 1.14 2003/03/15 17:33:26 brianp Exp $ */
+/* $Id: nvfragparse.c,v 1.15 2003/03/19 05:34:25 brianp Exp $ */
/*
* Mesa 3-D graphics library
@@ -42,6 +42,20 @@
#include "nvprogram.h"
+/* XXX move */
+static void *
+_mesa_realloc(void *oldBuffer, size_t oldSize, size_t newSize)
+{
+ void *newBuffer = _mesa_malloc(newSize);
+ size_t bytes = MIN2(oldSize, newSize);
+ if (newBuffer && bytes > 0) {
+ _mesa_memcpy(newBuffer, oldBuffer, bytes);
+ }
+ _mesa_free(oldBuffer);
+ return newBuffer;
+}
+
+
#define INPUT_1V 1
#define INPUT_2V 2
#define INPUT_3V 3
@@ -130,6 +144,13 @@ struct parse_state {
const GLubyte *start; /* start of program string */
const GLubyte *pos; /* current position */
struct fragment_program *program; /* current program */
+
+ GLuint numParameters;
+ struct program_parameter *parameters; /* DECLARE */
+
+ GLuint numConstants;
+ struct program_parameter *constants; /* DEFINE */
+
GLuint numInst; /* number of instructions parsed */
GLuint inputsRead; /* bitmask of input registers used */
GLuint outputsWritten; /* 2 = depth register */
@@ -137,6 +158,60 @@ struct parse_state {
};
+static void
+add_parameter(struct parse_state *parseState,
+ const char *name, const GLfloat values[4])
+{
+ const GLuint n = parseState->numParameters;
+
+ parseState->parameters = _mesa_realloc(parseState->parameters,
+ n * sizeof(struct program_parameter),
+ (n + 1) * sizeof(struct program_parameter));
+ parseState->numParameters = n + 1;
+ parseState->parameters[n].Name = _mesa_strdup(name);
+ COPY_4V(parseState->parameters[n].Values, values);
+}
+
+
+static const GLfloat *
+lookup_parameter(struct parse_state *parseState, const char *name)
+{
+ GLuint i;
+ for (i = 0; i < parseState->numParameters; i++) {
+ if (_mesa_strcmp(parseState->parameters[i].Name, name) == 0)
+ return parseState->parameters[i].Values;
+ }
+ return NULL;
+}
+
+
+static void
+add_constant(struct parse_state *parseState,
+ const char *name, const GLfloat values[4])
+{
+ const GLuint n = parseState->numConstants;
+
+ parseState->constants = _mesa_realloc(parseState->constants,
+ n * sizeof(struct program_parameter),
+ (n + 1) * sizeof(struct program_parameter));
+ parseState->numConstants = n + 1;
+ parseState->constants[n].Name = _mesa_strdup(name);
+ COPY_4V(parseState->constants[n].Values, values);
+}
+
+
+static const GLfloat *
+lookup_constant(struct parse_state *parseState, const char *name)
+{
+ GLuint i;
+ for (i = 0; i < parseState->numConstants; i++) {
+ if (_mesa_strcmp(parseState->constants[i].Name, name) == 0)
+ return parseState->constants[i].Values;
+ }
+ return NULL;
+}
+
+
/*
* Called whenever we find an error during parsing.
*/
@@ -493,13 +568,17 @@ Parse_ScalarConstant(struct parse_state *parseState, GLfloat *number)
else {
/* should be an identifier */
GLubyte ident[100];
+ const GLfloat *constant;
if (!Parse_Identifier(parseState, ident))
RETURN_ERROR1("Expected an identifier");
- if (!_mesa_lookup_symbol(&(parseState->program->SymbolTable),
- (const char *) ident, number)) {
+ constant = lookup_constant(parseState, (const char *) ident);
+ if (!constant) {
RETURN_ERROR1("Undefined symbol");
}
- return GL_TRUE;
+ else {
+ COPY_4V(number, constant);
+ return GL_TRUE;
+ }
}
}
@@ -1165,8 +1244,10 @@ Parse_InstructionSequence(struct parse_state *parseState,
RETURN_ERROR1("Expected ;");
printf("Parsed DEFINE %s = %f %f %f %f\n", id, value[0], value[1],
value[2], value[3]);
- _mesa_add_symbol(&(parseState->program->SymbolTable),
- (const char *) id, Definition, value);
+ if (lookup_parameter(parseState, (const char *) id)) {
+ RETURN_ERROR2(id, "already defined");
+ }
+ add_parameter(parseState, (const char *) id, value);
}
else if (Parse_String(parseState, "DECLARE")) {
GLubyte id[100];
@@ -1185,8 +1266,10 @@ Parse_InstructionSequence(struct parse_state *parseState,
}
if (!Parse_String(parseState, ";"))
RETURN_ERROR1("Expected ;");
- _mesa_add_symbol(&(parseState->program->SymbolTable),
- (const char *) id, Declaration, value);
+ if (lookup_constant(parseState, (const char *) id)) {
+ RETURN_ERROR2(id, "already declared");
+ }
+ add_constant(parseState, (const char *) id, value);
}
else if (Parse_String(parseState, "END")) {
inst->Opcode = FP_OPCODE_END;
@@ -1411,8 +1494,29 @@ _mesa_parse_nv_fragment_program(GLcontext *ctx, GLenum dstTarget,
for (u = 0; u < ctx->Const.MaxTextureImageUnits; u++)
program->TexturesUsed[u] = parseState.texturesUsed[u];
+ /* save program parameters */
+ if (program->Parameters) {
+ GLuint i;
+ for (i = 0; i < program->NumParameters; i++)
+ _mesa_free((void *) program->Parameters[i].Name);
+ _mesa_free(program->Parameters);
+ }
+ program->NumParameters = parseState.numParameters;
+ program->Parameters = parseState.parameters;
+
+ /* free program constants */
+ if (parseState.constants) {
+ GLuint i;
+ for (i = 0; i < parseState.numConstants; i++)
+ _mesa_free((void *) parseState.constants[i].Name);
+ _mesa_free(parseState.constants);
+ }
+
+
/* allocate registers for declared program parameters */
+#if 00
_mesa_assign_program_registers(&(program->SymbolTable));
+#endif
#ifdef DEBUG
_mesa_printf("--- glLoadProgramNV(%d) result ---\n", program->Base.Id);