*
* \author Ian Romanick <ian.d.romanick@intel.com>
*/
-#include <cstdlib>
-#include <cstdio>
-#include <cstdarg>
-#include <climits>
-
-extern "C" {
-#include <talloc.h>
-}
#include "main/core.h"
#include "glsl_symbol_table.h"
{
va_list ap;
- prog->InfoLog = talloc_strdup_append(prog->InfoLog, "error: ");
+ ralloc_strcat(&prog->InfoLog, "error: ");
va_start(ap, fmt);
- prog->InfoLog = talloc_vasprintf_append(prog->InfoLog, fmt, ap);
+ ralloc_vasprintf_append(&prog->InfoLog, fmt, ap);
va_end(ap);
}
case ir_var_out: return "shader output";
case ir_var_inout: return "shader inout";
+ case ir_var_const_in:
case ir_var_temporary:
default:
assert(!"Should not get here.");
&& (var->type->fields.array == existing->type->fields.array)
&& ((var->type->length == 0)
|| (existing->type->length == 0))) {
- if (existing->type->length == 0) {
+ if (var->type->length != 0) {
existing->type = var->type;
- existing->max_array_access =
- MAX2(existing->max_array_access,
- var->max_array_access);
}
} else {
linker_error_printf(prog, "%s `%s' declared as type "
existing->explicit_location = true;
}
+ /* Validate layout qualifiers for gl_FragDepth.
+ *
+ * From the AMD_conservative_depth spec:
+ * "If gl_FragDepth is redeclared in any fragment shader in
+ * a program, it must be redeclared in all fragment shaders in that
+ * program that have static assignments to gl_FragDepth. All
+ * redeclarations of gl_FragDepth in all fragment shaders in
+ * a single program must have the same set of qualifiers."
+ */
+ if (strcmp(var->name, "gl_FragDepth") == 0) {
+ bool layout_declared = var->depth_layout != ir_depth_layout_none;
+ bool layout_differs = var->depth_layout != existing->depth_layout;
+ if (layout_declared && layout_differs) {
+ linker_error_printf(prog,
+ "All redeclarations of gl_FragDepth in all fragment shaders "
+ "in a single program must have the same set of qualifiers.");
+ }
+ if (var->used && layout_differs) {
+ linker_error_printf(prog,
+ "If gl_FragDepth is redeclared with a layout qualifier in"
+ "any fragment shader, it must be redeclared with the same"
+ "layout qualifier in all fragment shaders that have"
+ "assignments to gl_FragDepth");
+ }
+ }
+
/* FINISHME: Handle non-constant initializers.
*/
if (var->constant_value != NULL) {
* FINISHME: will fail.
*/
existing->constant_value =
- var->constant_value->clone(talloc_parent(existing), NULL);
+ var->constant_value->clone(ralloc_parent(existing), NULL);
}
if (existing->invariant != var->invariant) {
mode_string(var), var->name);
return false;
}
+ if (existing->centroid != var->centroid) {
+ linker_error_printf(prog, "declarations for %s `%s' have "
+ "mismatching centroid qualifiers\n",
+ mode_string(var), var->name);
+ return false;
+ }
} else
variables.add_variable(var);
}
/* Check that the types match between stages.
*/
if (input->type != output->type) {
- linker_error_printf(prog,
- "%s shader output `%s' declared as "
- "type `%s', but %s shader input declared "
- "as type `%s'\n",
- producer_stage, output->name,
- output->type->name,
- consumer_stage, input->type->name);
- return false;
+ /* There is a bit of a special case for gl_TexCoord. This
+ * built-in is unsized by default. Appliations that variable
+ * access it must redeclare it with a size. There is some
+ * language in the GLSL spec that implies the fragment shader
+ * and vertex shader do not have to agree on this size. Other
+ * driver behave this way, and one or two applications seem to
+ * rely on it.
+ *
+ * Neither declaration needs to be modified here because the array
+ * sizes are fixed later when update_array_sizes is called.
+ *
+ * From page 48 (page 54 of the PDF) of the GLSL 1.10 spec:
+ *
+ * "Unlike user-defined varying variables, the built-in
+ * varying variables don't have a strict one-to-one
+ * correspondence between the vertex language and the
+ * fragment language."
+ */
+ if (!output->type->is_array()
+ || (strncmp("gl_", output->name, 3) != 0)) {
+ linker_error_printf(prog,
+ "%s shader output `%s' declared as "
+ "type `%s', but %s shader input declared "
+ "as type `%s'\n",
+ producer_stage, output->name,
+ output->type->name,
+ consumer_stage, input->type->name);
+ return false;
+ }
}
/* Check that all of the qualifiers match between stages.
free(linking_shaders);
- /* Make a pass over all global variables to ensure that arrays with
+ /* Make a pass over all variable declarations to ensure that arrays with
* unspecified sizes have a size specified. The size is inferred from the
* max_array_access field.
*/
- foreach_list(node, linked->ir) {
- ir_variable *const var = ((ir_instruction *) node)->as_variable();
-
- if (var == NULL)
- continue;
-
- if (!var->type->is_array() || (var->type->length != 0))
- continue;
+ if (linked != NULL) {
+ class array_sizing_visitor : public ir_hierarchical_visitor {
+ public:
+ virtual ir_visitor_status visit(ir_variable *var)
+ {
+ if (var->type->is_array() && (var->type->length == 0)) {
+ const glsl_type *type =
+ glsl_type::get_array_instance(var->type->fields.array,
+ var->max_array_access + 1);
+
+ assert(type != NULL);
+ var->type = type;
+ }
- const glsl_type *type =
- glsl_type::get_array_instance(var->type->fields.array,
- var->max_array_access);
+ return visit_continue;
+ }
+ } v;
- assert(type != NULL);
- var->type = type;
+ v.run(linked->ir);
}
-
return linked;
}
if (type->is_record()) {
for (unsigned int i = 0; i < type->length; i++) {
const glsl_type *field_type = type->fields.structure[i].type;
- char *field_name = talloc_asprintf(mem_ctx, "%s.%s", name,
+ char *field_name = ralloc_asprintf(mem_ctx, "%s.%s", name,
type->fields.structure[i].name);
add_uniform(mem_ctx, uniforms, ht, field_name, field_type,
/* Array of structures. */
if (array_elem_type->is_record()) {
for (unsigned int i = 0; i < type->length; i++) {
- char *elem_name = talloc_asprintf(mem_ctx, "%s[%d]", name, i);
+ char *elem_name = ralloc_asprintf(mem_ctx, "%s[%d]", name, i);
add_uniform(mem_ctx, uniforms, ht, elem_name, array_elem_type,
shader_type, next_shader_pos, total_uniforms);
}
unsigned total_uniforms = 0;
hash_table *ht = hash_table_ctor(32, hash_table_string_hash,
hash_table_string_compare);
- void *mem_ctx = talloc_new(NULL);
+ void *mem_ctx = ralloc_context(NULL);
for (unsigned i = 0; i < MESA_SHADER_TYPES; i++) {
if (prog->_LinkedShaders[i] == NULL)
}
}
- talloc_free(mem_ctx);
+ ralloc_free(mem_ctx);
gl_uniform_list *ul = (gl_uniform_list *)
calloc(1, sizeof(gl_uniform_list));
void
link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
{
- void *mem_ctx = talloc_init("temporary linker context");
+ void *mem_ctx = ralloc_context(NULL); // temporary linker context
prog->LinkStatus = false;
prog->Validated = false;
prog->_Used = false;
if (prog->InfoLog != NULL)
- talloc_free(prog->InfoLog);
+ ralloc_free(prog->InfoLog);
- prog->InfoLog = talloc_strdup(NULL, "");
+ prog->InfoLog = ralloc_strdup(NULL, "");
/* Separate the shaders into groups based on their type.
*/
demote_shader_inputs_and_outputs(sh, ir_var_in);
}
+ /* OpenGL ES requires that a vertex shader and a fragment shader both be
+ * present in a linked program. By checking for use of shading language
+ * version 1.00, we also catch the GL_ARB_ES2_compatibility case.
+ */
+ if (ctx->API == API_OPENGLES2 || prog->Version == 100) {
+ if (prog->_LinkedShaders[MESA_SHADER_VERTEX] == NULL) {
+ linker_error_printf(prog, "program lacks a vertex shader\n");
+ prog->LinkStatus = false;
+ } else if (prog->_LinkedShaders[MESA_SHADER_FRAGMENT] == NULL) {
+ linker_error_printf(prog, "program lacks a fragment shader\n");
+ prog->LinkStatus = false;
+ }
+ }
+
/* FINISHME: Assign fragment shader output locations. */
done:
reparent_ir(prog->_LinkedShaders[i]->ir, prog->_LinkedShaders[i]->ir);
}
- talloc_free(mem_ctx);
+ ralloc_free(mem_ctx);
}
projects / mesa.git / blobdiff