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glsl: Allow .length() method on vectors and matrices.

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Required by ARB_shading_language_420pack.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Matt Turner
2013-05-20 09:18:01 -07:00
parent cf7f424e18
commit a8492e8fe7
1 changed files with 38 additions and 20 deletions
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48
src/glsl/hir_field_selection.cpp
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@@ -47,20 +47,6 @@ _mesa_ast_field_selection_to_hir(const ast_expression *expr,
YYLTYPE loc = expr->get_location();
if (op->type->is_error()) {
/* silently propagate the error */
} else if (op->type->is_vector()) {
ir_swizzle *swiz = ir_swizzle::create(op,
expr->primary_expression.identifier,
op->type->vector_elements);
if (swiz != NULL) {
result = swiz;
} else {
/* FINISHME: Logging of error messages should be moved into
* FINISHME: ir_swizzle::create. This allows the generation of more
* FINISHME: specific error messages.
*/
_mesa_glsl_error(& loc, state, "Invalid swizzle / mask `%s'",
expr->primary_expression.identifier);
}
} else if (op->type->base_type == GLSL_TYPE_STRUCT
|| op->type->base_type == GLSL_TYPE_INTERFACE) {
result = new(ctx) ir_dereference_record(op,
@@ -81,17 +67,49 @@ _mesa_ast_field_selection_to_hir(const ast_expression *expr,
const char *method;
method = call->subexpressions[0]->primary_expression.identifier;
if (op->type->is_array() && strcmp(method, "length") == 0) {
if (strcmp(method, "length") == 0) {
if (!call->expressions.is_empty())
_mesa_glsl_error(&loc, state, "length method takes no arguments.");
if (op->type->is_array()) {
if (op->type->array_size() == 0)
_mesa_glsl_error(&loc, state, "length called on unsized array.");
result = new(ctx) ir_constant(op->type->array_size());
} else if (op->type->is_vector()) {
if (state->ARB_shading_language_420pack_enable) {
/* .length() returns int. */
result = new(ctx) ir_constant((int) op->type->vector_elements);
} else {
_mesa_glsl_error(&loc, state, "length method on matrix only available"
"with ARB_shading_language_420pack.");
}
} else if (op->type->is_matrix()) {
if (state->ARB_shading_language_420pack_enable) {
/* .length() returns int. */
result = new(ctx) ir_constant((int) op->type->matrix_columns);
} else {
_mesa_glsl_error(&loc, state, "length method on matrix only available"
"with ARB_shading_language_420pack.");
}
}
} else {
_mesa_glsl_error(&loc, state, "Unknown method: `%s'.", method);
}
} else if (op->type->is_vector()) {
ir_swizzle *swiz = ir_swizzle::create(op,
expr->primary_expression.identifier,
op->type->vector_elements);
if (swiz != NULL) {
result = swiz;
} else {
/* FINISHME: Logging of error messages should be moved into
* FINISHME: ir_swizzle::create. This allows the generation of more
* FINISHME: specific error messages.
*/
_mesa_glsl_error(& loc, state, "Invalid swizzle / mask `%s'",
expr->primary_expression.identifier);
}
} else {
_mesa_glsl_error(& loc, state, "Cannot access field `%s' of "
"non-structure / non-vector.",