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Diffstat (limited to 'src/mesa/shader/slang/slang_compile.c')
-rw-r--r--src/mesa/shader/slang/slang_compile.c134
1 files changed, 131 insertions, 3 deletions
diff --git a/src/mesa/shader/slang/slang_compile.c b/src/mesa/shader/slang/slang_compile.c
index 29c5ca2f4b2..fd5d4afacb6 100644
--- a/src/mesa/shader/slang/slang_compile.c
+++ b/src/mesa/shader/slang/slang_compile.c
@@ -56,6 +56,9 @@
*/
+/** re-defined below, should be the same though */
+#define TYPE_SPECIFIER_COUNT 32
+
/**
* Allocate storage for a variable of 'size' bytes from given pool.
@@ -129,6 +132,7 @@ typedef struct slang_parse_ctx_
GLboolean global_scope; /**< Is object being declared a global? */
slang_atom_pool *atoms;
slang_unit_type type; /**< Vertex vs. Fragment */
+ GLuint version; /**< user-specified (or default) #version */
} slang_parse_ctx;
/* slang_output_ctx */
@@ -141,6 +145,7 @@ typedef struct slang_output_ctx_
slang_var_pool *global_pool;
struct gl_program *program;
slang_var_table *vartable;
+ GLuint default_precision[TYPE_SPECIFIER_COUNT];
} slang_output_ctx;
/* _slang_compile() */
@@ -525,7 +530,7 @@ parse_type_qualifier(slang_parse_ctx * C, slang_type_qualifier * qual)
#define TYPE_SPECIFIER_MAT42 29
#define TYPE_SPECIFIER_MAT34 30
#define TYPE_SPECIFIER_MAT43 31
-
+#define TYPE_SPECIFIER_COUNT 32
static int
parse_type_specifier(slang_parse_ctx * C, slang_output_ctx * O,
@@ -1817,10 +1822,111 @@ parse_declaration(slang_parse_ctx * C, slang_output_ctx * O)
return 1;
}
-/* external declaration */
+
+#define PRECISION_LOW 0
+#define PRECISION_MEDIUM 1
+#define PRECISION_HIGH 2
+
+static int
+parse_default_precision(slang_parse_ctx * C, slang_output_ctx * O)
+{
+#if FEATURE_es2_glsl
+ int precision, type;
+
+ precision = *C->I++;
+ switch (precision) {
+ case PRECISION_LOW:
+ case PRECISION_MEDIUM:
+ case PRECISION_HIGH:
+ /* OK */
+ break;
+ default:
+ _mesa_problem(NULL, "unexpected precision %d at %s:%d\n",
+ precision, __FILE__, __LINE__);
+ return 0;
+ }
+
+ type = *C->I++;
+ switch (type) {
+ case TYPE_SPECIFIER_FLOAT:
+ case TYPE_SPECIFIER_INT:
+ case TYPE_SPECIFIER_SAMPLER1D:
+ case TYPE_SPECIFIER_SAMPLER2D:
+ case TYPE_SPECIFIER_SAMPLER3D:
+ case TYPE_SPECIFIER_SAMPLERCUBE:
+ case TYPE_SPECIFIER_SAMPLER1DSHADOW:
+ case TYPE_SPECIFIER_SAMPLER2DSHADOW:
+ case TYPE_SPECIFIER_SAMPLER2DRECT:
+ case TYPE_SPECIFIER_SAMPLER2DRECTSHADOW:
+ /* OK */
+ break;
+ default:
+ _mesa_problem(NULL, "unexpected type %d at %s:%d\n",
+ type, __FILE__, __LINE__);
+ return 0;
+ }
+
+ assert(type < TYPE_SPECIFIER_COUNT);
+ O->default_precision[type] = precision;
+
+ return 1;
+#else
+ slang_info_log_error(C->L, "syntax error at \"precision\"");
+ return 0;
+#endif
+}
+
+
+/**
+ * Initialize the default precision for all types.
+ * XXX this info isn't used yet.
+ */
+static void
+init_default_precision(slang_output_ctx *O, slang_unit_type type)
+{
+ GLuint i;
+ for (i = 0; i < TYPE_SPECIFIER_COUNT; i++) {
+#if FEATURE_es2_glsl
+ O->default_precision[i] = PRECISION_LOW;
+#else
+ O->default_precision[i] = PRECISION_HIGH;
+#endif
+ }
+#if FEATURE_es2_glsl
+ if (type == SLANG_UNIT_VERTEX_SHADER) {
+ O->default_precision[TYPE_SPECIFIER_FLOAT] = PRECISION_HIGH;
+ O->default_precision[TYPE_SPECIFIER_INT] = PRECISION_HIGH;
+ }
+ else {
+ O->default_precision[TYPE_SPECIFIER_INT] = PRECISION_MEDIUM;
+ }
+#endif
+}
+
+
+static int
+parse_invariant(slang_parse_ctx * C, slang_output_ctx * O)
+{
+ if (C->version >= 120 || FEATURE_es2_glsl) {
+ slang_atom *a = parse_identifier(C);
+ /* XXX not doing anything with this var yet */
+ /*printf("ID: %s\n", (char*) a);*/
+ return a ? 1 : 0;
+ }
+ else {
+ slang_info_log_error(C->L, "syntax error at \"invariant\"");
+ return 0;
+ }
+}
+
+
+/* external declaration or default precision specifier */
#define EXTERNAL_NULL 0
#define EXTERNAL_FUNCTION_DEFINITION 1
#define EXTERNAL_DECLARATION 2
+#define DEFAULT_PRECISION 3
+#define INVARIANT_STMT 4
+
static GLboolean
parse_code_unit(slang_parse_ctx * C, slang_code_unit * unit,
@@ -1843,6 +1949,7 @@ parse_code_unit(slang_parse_ctx * C, slang_code_unit * unit,
}
/* setup output context */
+ init_default_precision(&o, unit->type);
o.funs = &unit->funs;
o.structs = &unit->structs;
o.vars = &unit->vars;
@@ -1868,6 +1975,12 @@ parse_code_unit(slang_parse_ctx * C, slang_code_unit * unit,
case EXTERNAL_DECLARATION:
success = parse_declaration(C, &o);
break;
+ case DEFAULT_PRECISION:
+ success = parse_default_precision(C, &o);
+ break;
+ case INVARIANT_STMT:
+ success = parse_invariant(C, &o);
+ break;
default:
success = GL_FALSE;
}
@@ -1904,6 +2017,7 @@ parse_code_unit(slang_parse_ctx * C, slang_code_unit * unit,
static GLboolean
compile_binary(const byte * prod, slang_code_unit * unit,
+ GLuint version,
slang_unit_type type, slang_info_log * infolog,
slang_code_unit * builtin, slang_code_unit * downlink,
struct gl_program *program)
@@ -1919,6 +2033,7 @@ compile_binary(const byte * prod, slang_code_unit * unit,
C.global_scope = GL_TRUE;
C.atoms = &unit->object->atompool;
C.type = type;
+ C.version = version;
if (!check_revision(&C))
return GL_FALSE;
@@ -1946,6 +2061,8 @@ compile_with_grammar(grammar id, const char *source, slang_code_unit * unit,
#if FEATURE_ARB_shading_language_120
maxVersion = 120;
+#elif FEATURE_es2_glsl
+ maxVersion = 100;
#else
maxVersion = 110;
#endif
@@ -1995,7 +2112,7 @@ compile_with_grammar(grammar id, const char *source, slang_code_unit * unit,
slang_string_free(&preprocessed);
/* Syntax is okay - translate it to internal representation. */
- if (!compile_binary(prod, unit, type, infolog, builtin,
+ if (!compile_binary(prod, unit, version, type, infolog, builtin,
&builtin[SLANG_BUILTIN_TOTAL - 1],
program)) {
grammar_alloc_free(prod);
@@ -2039,6 +2156,7 @@ compile_object(grammar * id, const char *source, slang_code_object * object,
struct gl_program *program)
{
slang_code_unit *builtins = NULL;
+ GLuint base_version = 110;
/* load GLSL grammar */
*id = grammar_load_from_text((const byte *) (slang_shader_syn));
@@ -2066,6 +2184,7 @@ compile_object(grammar * id, const char *source, slang_code_object * object,
/* compile core functionality first */
if (!compile_binary(slang_core_gc,
&object->builtin[SLANG_BUILTIN_CORE],
+ base_version,
SLANG_UNIT_FRAGMENT_BUILTIN, infolog,
NULL, NULL, NULL))
return GL_FALSE;
@@ -2073,6 +2192,7 @@ compile_object(grammar * id, const char *source, slang_code_object * object,
#if FEATURE_ARB_shading_language_120
if (!compile_binary(slang_120_core_gc,
&object->builtin[SLANG_BUILTIN_120_CORE],
+ 120,
SLANG_UNIT_FRAGMENT_BUILTIN, infolog,
NULL, &object->builtin[SLANG_BUILTIN_CORE], NULL))
return GL_FALSE;
@@ -2081,6 +2201,11 @@ compile_object(grammar * id, const char *source, slang_code_object * object,
/* compile common functions and variables, link to core */
if (!compile_binary(slang_common_builtin_gc,
&object->builtin[SLANG_BUILTIN_COMMON],
+#if FEATURE_ARB_shading_language_120
+ 120,
+#else
+ base_version,
+#endif
SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
#if FEATURE_ARB_shading_language_120
&object->builtin[SLANG_BUILTIN_120_CORE],
@@ -2094,12 +2219,14 @@ compile_object(grammar * id, const char *source, slang_code_object * object,
if (type == SLANG_UNIT_FRAGMENT_SHADER) {
if (!compile_binary(slang_fragment_builtin_gc,
&object->builtin[SLANG_BUILTIN_TARGET],
+ base_version,
SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
&object->builtin[SLANG_BUILTIN_COMMON], NULL))
return GL_FALSE;
#if FEATURE_ARB_shading_language_120
if (!compile_binary(slang_120_fragment_gc,
&object->builtin[SLANG_BUILTIN_TARGET],
+ 120,
SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
&object->builtin[SLANG_BUILTIN_COMMON], NULL))
return GL_FALSE;
@@ -2108,6 +2235,7 @@ compile_object(grammar * id, const char *source, slang_code_object * object,
else if (type == SLANG_UNIT_VERTEX_SHADER) {
if (!compile_binary(slang_vertex_builtin_gc,
&object->builtin[SLANG_BUILTIN_TARGET],
+ base_version,
SLANG_UNIT_VERTEX_BUILTIN, infolog, NULL,
&object->builtin[SLANG_BUILTIN_COMMON], NULL))
return GL_FALSE;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 06:13:46 +0000