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Diffstat (limited to 'src/mesa/shader/slang/slang_codegen.c')
-rw-r--r--src/mesa/shader/slang/slang_codegen.c62
1 files changed, 44 insertions, 18 deletions
diff --git a/src/mesa/shader/slang/slang_codegen.c b/src/mesa/shader/slang/slang_codegen.c
index 6261aab23c..d4d2e34dee 100644
--- a/src/mesa/shader/slang/slang_codegen.c
+++ b/src/mesa/shader/slang/slang_codegen.c
@@ -1410,6 +1410,27 @@ slang_find_asm_info(const char *name)
/**
+ * Return the default swizzle mask for accessing a variable of the
+ * given size (in floats). If size = 1, comp is used to identify
+ * which component [0..3] of the register holds the variable.
+ */
+static GLuint
+_slang_var_swizzle(GLint size, GLint comp)
+{
+ switch (size) {
+ case 1:
+ return MAKE_SWIZZLE4(comp, comp, comp, comp);
+ case 2:
+ return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_NIL, SWIZZLE_NIL);
+ case 3:
+ return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_NIL);
+ default:
+ return SWIZZLE_XYZW;
+ }
+}
+
+
+/**
* Some write-masked assignments are simple, but others are hard.
* Simple example:
* vec3 v;
@@ -3063,6 +3084,7 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
int dbg = 0;
const GLenum datatype = _slang_gltype_from_specifier(&var->type.specifier);
const GLint texIndex = sampler_to_texture_index(var->type.specifier.type);
+ const GLint size = _slang_sizeof_type_specifier(&var->type.specifier);
if (texIndex != -1) {
/* This is a texture sampler variable...
@@ -3076,8 +3098,8 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
}
else if (var->type.qualifier == SLANG_QUAL_UNIFORM) {
/* Uniform variable */
- const GLint size = _slang_sizeof_type_specifier(&var->type.specifier)
- * MAX2(var->array_len, 1);
+ const GLint totalSize = size * MAX2(var->array_len, 1);
+ const GLuint swizzle = _slang_var_swizzle(totalSize, 0);
if (prog) {
/* user-defined uniform */
if (datatype == GL_NONE) {
@@ -3106,8 +3128,10 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
}
else {
GLint uniformLoc = _mesa_add_uniform(prog->Parameters, varName,
- size, datatype);
- store = _slang_new_ir_storage(PROGRAM_UNIFORM, uniformLoc, size);
+ totalSize, datatype);
+ store = _slang_new_ir_storage_swz(PROGRAM_UNIFORM, uniformLoc,
+ totalSize, swizzle);
+ printf("GLOBAL USER UNIFORM %s size %d\n", varName, totalSize);
}
}
else {
@@ -3115,33 +3139,40 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
/* We know it's a uniform, but don't allocate storage unless
* it's really used.
*/
- store = _slang_new_ir_storage(PROGRAM_STATE_VAR, -1, size);
+ store = _slang_new_ir_storage_swz(PROGRAM_STATE_VAR, -1,
+ totalSize, swizzle);
}
- if (dbg) printf("UNIFORM (sz %d) ", size);
+ if (dbg) printf("UNIFORM (sz %d) ", totalSize);
}
else if (var->type.qualifier == SLANG_QUAL_VARYING) {
- const GLint size = 4; /* XXX fix */
if (prog) {
/* user-defined varying */
GLint varyingLoc = _mesa_add_varying(prog->Varying, varName, size);
- store = _slang_new_ir_storage(PROGRAM_VARYING, varyingLoc, size);
+ GLuint swizzle = _slang_var_swizzle(size, 0);
+ store = _slang_new_ir_storage_swz(PROGRAM_VARYING, varyingLoc,
+ size, swizzle);
}
else {
/* pre-defined varying, like gl_Color or gl_TexCoord */
if (type == SLANG_UNIT_FRAGMENT_BUILTIN) {
+ /* fragment program input */
GLuint swizzle;
GLint index = _slang_input_index(varName, GL_FRAGMENT_PROGRAM_ARB,
&swizzle);
assert(index >= 0);
- store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle);
assert(index < FRAG_ATTRIB_MAX);
+ store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index,
+ size, swizzle);
}
else {
+ /* vertex program output */
GLint index = _slang_output_index(varName, GL_VERTEX_PROGRAM_ARB);
+ GLuint swizzle = _slang_var_swizzle(size, 0);
assert(index >= 0);
- assert(type == SLANG_UNIT_VERTEX_BUILTIN);
- store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size);
assert(index < VERT_RESULT_MAX);
+ assert(type == SLANG_UNIT_VERTEX_BUILTIN);
+ store = _slang_new_ir_storage_swz(PROGRAM_OUTPUT, index,
+ size, swizzle);
}
if (dbg) printf("V/F ");
}
@@ -3150,7 +3181,6 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
else if (var->type.qualifier == SLANG_QUAL_ATTRIBUTE) {
if (prog) {
/* user-defined vertex attribute */
- const GLint size = _slang_sizeof_type_specifier(&var->type.specifier);
const GLint attr = -1; /* unknown */
GLint index = _mesa_add_attribute(prog->Attributes, varName,
size, attr);
@@ -3163,7 +3193,6 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
GLuint swizzle;
GLint index = _slang_input_index(varName, GL_VERTEX_PROGRAM_ARB,
&swizzle);
- GLint size = 4; /* XXX? */
assert(index >= 0);
store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle);
}
@@ -3173,27 +3202,24 @@ _slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
GLuint swizzle = SWIZZLE_XYZW; /* silence compiler warning */
GLint index = _slang_input_index(varName, GL_FRAGMENT_PROGRAM_ARB,
&swizzle);
- GLint size = 4; /* XXX? */
store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle);
if (dbg) printf("INPUT ");
}
else if (var->type.qualifier == SLANG_QUAL_FIXEDOUTPUT) {
if (type == SLANG_UNIT_VERTEX_BUILTIN) {
GLint index = _slang_output_index(varName, GL_VERTEX_PROGRAM_ARB);
- GLint size = 4; /* XXX? */
store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size);
}
else {
GLint index = _slang_output_index(varName, GL_FRAGMENT_PROGRAM_ARB);
- GLint size = 4; /* XXX? */
+ GLint specialSize = 4; /* treat all fragment outputs as float[4] */
assert(type == SLANG_UNIT_FRAGMENT_BUILTIN);
- store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size);
+ store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, specialSize);
}
if (dbg) printf("OUTPUT ");
}
else if (var->type.qualifier == SLANG_QUAL_CONST && !prog) {
/* pre-defined global constant, like gl_MaxLights */
- const GLint size = _slang_sizeof_type_specifier(&var->type.specifier);
store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, size);
if (dbg) printf("CONST ");
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 19:26:24 +0000