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-rw-r--r--src/mesa/shader/slang/slang_codegen.c89
-rw-r--r--src/mesa/shader/slang/slang_emit.c8
-rw-r--r--src/mesa/shader/slang/slang_emit.h2
3 files changed, 56 insertions, 43 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index 12e9588579e..9f215734154 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -525,6 +525,19 @@ static slang_asm_info AsmInfo[] = {
};
+/**
+ * Recursively free an IR tree.
+ */
+static void
+_slang_free_ir_tree(slang_ir_node *n)
+{
+ if (!n)
+ return;
+ _slang_free_ir_tree(n->Children[0]);
+ _slang_free_ir_tree(n->Children[1]);
+ free(n);
+}
+
static slang_ir_node *
new_node(slang_ir_opcode op, slang_ir_node *left, slang_ir_node *right)
@@ -1984,10 +1997,10 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
{
struct gl_program *prog = A->program;
const char *varName = (char *) var->a_name;
+ GLboolean success = GL_TRUE;
GLint texIndex;
slang_ir_storage *store = NULL;
int dbg = 0;
- GLboolean codegen = GL_FALSE; /* generate code for this global? */
texIndex = sampler_to_texture_index(var->type.specifier.type);
@@ -2046,23 +2059,6 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
}
if (dbg) printf("VARYING ");
}
- else if (var->type.qualifier == slang_qual_const) {
- if (prog) {
- /* user-defined constant */
- /*
- const GLint size = _slang_sizeof_type_specifier(&var->type.specifier);
- const GLint index = _mesa_add_named_constant(prog->Parameters);
- */
- printf("Global user constant\n");
- abort(); /* XXX fix */
- }
- else {
- /* pre-defined global constant, like gl_MaxLights */
- GLint size = -1;
- store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, size);
- }
- if (dbg) printf("CONST ");
- }
else if (var->type.qualifier == slang_qual_attribute) {
if (prog) {
/* user-defined vertex attribute */
@@ -2103,30 +2099,29 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
}
if (dbg) printf("OUTPUT ");
}
+ else if (var->type.qualifier == slang_qual_const && !prog) {
+ /* pre-defined global constant, like gl_MaxLights */
+ GLint size = -1;
+ store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, size);
+ if (dbg) printf("CONST ");
+ }
else {
- /* ordinary variable */
+ /* ordinary variable (may be const) */
const GLint size = _slang_sizeof_type_specifier(&var->type.specifier);
const GLint index = -1;
- store = _slang_new_ir_storage(PROGRAM_TEMPORARY, index, size);
- codegen = GL_TRUE;
- assert(prog); /* shouldn't be any pre-defined, unqualified vars */
- }
- if (dbg) printf("GLOBAL VAR %s idx %d\n", (char*) var->a_name,
- store ? store->Index : -2);
-
- assert(!var->aux);
- var->aux = store; /* save var's storage info */
-
- if (codegen) {
slang_ir_node *n;
+ /* IR node to declare the variable */
n = new_node(IR_VAR_DECL, NULL, NULL);
if (!n)
return GL_FALSE;
n->Var = var;
var->declared = GL_TRUE;
+ store = _slang_new_ir_storage(PROGRAM_TEMPORARY, index, size);
+ var->aux = store; /* save var's storage info */
slang_allocate_storage(A->codegen, n, A->program);
+ /* IR code for the var's initializer, if present */
if (var->initializer) {
slang_ir_node *lhs, *rhs, *init;
@@ -2136,16 +2131,26 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
lhs->Swizzle = SWIZZLE_NOOP;
lhs->Store = store;
+ /* constant folding, etc */
+ slang_simplify(var->initializer, &A->space, A->atoms);
+
rhs = _slang_gen_operation(A, var->initializer);
init = new_node(IR_MOVE, lhs, rhs);
n = new_seq(n, init);
}
- /* emit code (n) */
+ success = _slang_emit_code(n, A->codegen, A->program, GL_FALSE);
+ _slang_free_ir_tree(n);
}
- return GL_TRUE;
+ if (dbg) printf("GLOBAL VAR %s idx %d\n", (char*) var->a_name,
+ store ? store->Index : -2);
+
+
+ var->aux = store; /* save var's storage info */
+
+ return success;
}
@@ -2158,7 +2163,7 @@ GLboolean
_slang_codegen_function(slang_assemble_ctx * A, slang_function * fun)
{
slang_ir_node *n, *endLabel;
- GLboolean success;
+ GLboolean success = GL_TRUE;
if (_mesa_strcmp((char *) fun->header.a_name, "main") != 0) {
/* we only really generate code for main, all other functions get
@@ -2190,15 +2195,19 @@ _slang_codegen_function(slang_assemble_ctx * A, slang_function * fun)
if (!CurFunction->end_label)
CurFunction->end_label = slang_atom_pool_gen(A->atoms, "__endOfFunc_main_");
+ /* Generate IR tree for the function body code */
n = _slang_gen_operation(A, fun->body);
- if (n) {
- endLabel = new_label(fun->end_label);
- n = new_seq(n, endLabel);
+ if (!n) {
+ /* XXX record error */
+ return GL_FALSE;
}
- CurFunction = NULL;
+ /* append an end-of-function-label to IR tree */
+ endLabel = new_label(fun->end_label);
+ n = new_seq(n, endLabel);
+ CurFunction = NULL;
#if 0
printf("************* New AST for %s *****\n", (char*)fun->header.a_name);
@@ -2210,13 +2219,15 @@ _slang_codegen_function(slang_assemble_ctx * A, slang_function * fun)
printf("************* End codegen function ************\n\n");
#endif
- success = _slang_emit_code(n, A->codegen, A->program);
+ /* Emit program instructions */
+ success = _slang_emit_code(n, A->codegen, A->program, GL_TRUE);
+ _slang_free_ir_tree(n);
/* free codegen context */
/*
_mesa_free(A->codegen);
*/
- return GL_TRUE;
+ return success;
}
diff --git a/src/mesa/shader/slang/slang_emit.c b/src/mesa/shader/slang/slang_emit.c
index 6c80c1e015a..909948968a4 100644
--- a/src/mesa/shader/slang/slang_emit.c
+++ b/src/mesa/shader/slang/slang_emit.c
@@ -769,14 +769,16 @@ _slang_new_codegen_context(void)
GLboolean
_slang_emit_code(slang_ir_node *n, slang_gen_context *gc,
- struct gl_program *prog)
+ struct gl_program *prog, GLboolean withEnd)
{
GLboolean success;
if (emit(gc, n, prog)) {
/* finish up by addeing the END opcode to program */
- struct prog_instruction *inst;
- inst = new_instruction(prog, OPCODE_END);
+ if (withEnd) {
+ struct prog_instruction *inst;
+ inst = new_instruction(prog, OPCODE_END);
+ }
success = GL_TRUE;
}
else {
diff --git a/src/mesa/shader/slang/slang_emit.h b/src/mesa/shader/slang/slang_emit.h
index 50585a4a031..cd3352604f4 100644
--- a/src/mesa/shader/slang/slang_emit.h
+++ b/src/mesa/shader/slang/slang_emit.h
@@ -53,7 +53,7 @@ _slang_alloc_temporary(slang_gen_context *gc, GLint size);
extern GLboolean
_slang_emit_code(slang_ir_node *n, slang_gen_context *gc,
- struct gl_program *prog);
+ struct gl_program *prog, GLboolean withEnd);
#endif /* SLANG_EMIT_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 17:58:59 +0000