#include "main/mtypes.h"
#include "glsl_symbol_table.h"
+#include "glsl_parser_extras.h"
#include "ir_optimization.h"
#include "linker.h"
#include "link_varyings.h"
gl_shader *producer, gl_shader *consumer)
{
glsl_symbol_table parameters;
- /* FINISHME: Figure these out dynamically. */
- const char *const producer_stage = "vertex";
- const char *const consumer_stage = "fragment";
+ const char *const producer_stage =
+ _mesa_glsl_shader_target_name(producer->Type);
+ const char *const consumer_stage =
+ _mesa_glsl_shader_target_name(consumer->Type);
/* Find all shader outputs in the "producer" stage.
*/
class varying_matches
{
public:
- varying_matches(bool disable_varying_packing);
+ varying_matches(bool disable_varying_packing, bool consumer_is_fs);
~varying_matches();
void record(ir_variable *producer_var, ir_variable *consumer_var);
unsigned assign_locations();
* it was allocated.
*/
unsigned matches_capacity;
+
+ const bool consumer_is_fs;
};
-varying_matches::varying_matches(bool disable_varying_packing)
- : disable_varying_packing(disable_varying_packing)
+varying_matches::varying_matches(bool disable_varying_packing,
+ bool consumer_is_fs)
+ : disable_varying_packing(disable_varying_packing),
+ consumer_is_fs(consumer_is_fs)
{
/* Note: this initial capacity is rather arbitrarily chosen to be large
* enough for many cases without wasting an unreasonable amount of space.
* If \c producer_var has already been paired up with a consumer_var, or
* producer_var is part of fixed pipeline functionality (and hence already has
* a location assigned), this function has no effect.
+ *
+ * Note: as a side effect this function may change the interpolation type of
+ * \c producer_var, but only when the change couldn't possibly affect
+ * rendering.
*/
void
varying_matches::record(ir_variable *producer_var, ir_variable *consumer_var)
return;
}
+ if ((consumer_var == NULL && producer_var->type->contains_integer()) ||
+ !consumer_is_fs) {
+ /* Since this varying is not being consumed by the fragment shader, its
+ * interpolation type varying cannot possibly affect rendering. Also,
+ * this variable is non-flat and is (or contains) an integer.
+ *
+ * lower_packed_varyings requires all integer varyings to flat,
+ * regardless of where they appear. We can trivially satisfy that
+ * requirement by changing the interpolation type to flat here.
+ */
+ producer_var->centroid = false;
+ producer_var->interpolation = INTERP_QUALIFIER_FLAT;
+
+ if (consumer_var) {
+ consumer_var->centroid = false;
+ consumer_var->interpolation = INTERP_QUALIFIER_FLAT;
+ }
+ }
+
if (this->num_matches == this->matches_capacity) {
this->matches_capacity *= 2;
this->matches = (match *)
{
const unsigned producer_base = VARYING_SLOT_VAR0;
const unsigned consumer_base = VARYING_SLOT_VAR0;
- varying_matches matches(ctx->Const.DisableVaryingPacking);
+ varying_matches matches(ctx->Const.DisableVaryingPacking,
+ consumer && consumer->Type == GL_FRAGMENT_SHADER);
hash_table *tfeedback_candidates
= hash_table_ctor(0, hash_table_string_hash, hash_table_string_compare);
hash_table *consumer_inputs
= hash_table_ctor(0, hash_table_string_hash, hash_table_string_compare);
+ hash_table *consumer_interface_inputs
+ = hash_table_ctor(0, hash_table_string_hash, hash_table_string_compare);
/* Operate in a total of three passes.
*
((ir_instruction *) node)->as_variable();
if ((input_var != NULL) && (input_var->mode == ir_var_shader_in)) {
- hash_table_insert(consumer_inputs, input_var,
- ralloc_strdup(mem_ctx, input_var->name));
+ if (input_var->interface_type != NULL) {
+ char *const iface_field_name =
+ ralloc_asprintf(mem_ctx, "%s.%s",
+ input_var->interface_type->name,
+ input_var->name);
+ hash_table_insert(consumer_interface_inputs, input_var,
+ iface_field_name);
+ } else {
+ hash_table_insert(consumer_inputs, input_var,
+ ralloc_strdup(mem_ctx, input_var->name));
+ }
}
}
}
tfeedback_candidate_generator g(mem_ctx, tfeedback_candidates);
g.process(output_var);
- ir_variable *input_var =
- (ir_variable *) hash_table_find(consumer_inputs, output_var->name);
+ ir_variable *input_var;
+ if (output_var->interface_type != NULL) {
+ char *const iface_field_name =
+ ralloc_asprintf(mem_ctx, "%s.%s",
+ output_var->interface_type->name,
+ output_var->name);
+ input_var =
+ (ir_variable *) hash_table_find(consumer_interface_inputs,
+ iface_field_name);
+ } else {
+ input_var =
+ (ir_variable *) hash_table_find(consumer_inputs, output_var->name);
+ }
if (input_var && input_var->mode != ir_var_shader_in)
input_var = NULL;
if (matched_candidate == NULL) {
hash_table_dtor(tfeedback_candidates);
hash_table_dtor(consumer_inputs);
+ hash_table_dtor(consumer_interface_inputs);
return false;
}
if (!tfeedback_decls[i].assign_location(ctx, prog)) {
hash_table_dtor(tfeedback_candidates);
hash_table_dtor(consumer_inputs);
+ hash_table_dtor(consumer_interface_inputs);
return false;
}
}
hash_table_dtor(tfeedback_candidates);
hash_table_dtor(consumer_inputs);
+ hash_table_dtor(consumer_interface_inputs);
if (ctx->Const.DisableVaryingPacking) {
/* Transform feedback code assumes varyings are packed, so if the driver
}
}
- unsigned varying_vectors = 0;
-
if (consumer) {
foreach_list(node, consumer->ir) {
ir_variable *const var = ((ir_instruction *) node)->as_variable();
- if ((var == NULL) || (var->mode != ir_var_shader_in))
- continue;
-
- if (var->is_unmatched_generic_inout) {
+ if (var && var->mode == ir_var_shader_in &&
+ var->is_unmatched_generic_inout) {
if (prog->Version <= 120) {
/* On page 25 (page 31 of the PDF) of the GLSL 1.20 spec:
*
* "glsl1-varying read but not written" in piglit.
*/
- linker_error(prog, "fragment shader varying %s not written "
- "by vertex shader\n.", var->name);
+ linker_error(prog, "%s shader varying %s not written "
+ "by %s shader\n.",
+ _mesa_glsl_shader_target_name(consumer->Type),
+ var->name,
+ _mesa_glsl_shader_target_name(producer->Type));
}
/* An 'in' variable is only really a shader input if its
* value is written by the previous stage.
*/
var->mode = ir_var_auto;
- } else if (is_varying_var(consumer->Type, var)) {
- /* The packing rules are used for vertex shader inputs are also
- * used for fragment shader inputs.
- */
- varying_vectors += count_attribute_slots(var->type);
}
}
}
+ return true;
+}
+
+bool
+check_against_varying_limit(struct gl_context *ctx,
+ struct gl_shader_program *prog,
+ gl_shader *consumer)
+{
+ unsigned varying_vectors = 0;
+
+ foreach_list(node, consumer->ir) {
+ ir_variable *const var = ((ir_instruction *) node)->as_variable();
+
+ if (var && var->mode == ir_var_shader_in &&
+ is_varying_var(consumer->Type, var)) {
+ /* The packing rules used for vertex shader inputs are also
+ * used for fragment shader inputs.
+ */
+ varying_vectors += count_attribute_slots(var->type);
+ }
+ }
+
if (ctx->API == API_OPENGLES2 || prog->IsES) {
if (varying_vectors > ctx->Const.MaxVarying) {
- if (ctx->Const.GLSLSkipStrictMaxVaryingLimitCheck) {
- linker_warning(prog, "shader uses too many varying vectors "
- "(%u > %u), but the driver will try to optimize "
- "them out; this is non-portable out-of-spec "
- "behavior\n",
- varying_vectors, ctx->Const.MaxVarying);
- } else {
- linker_error(prog, "shader uses too many varying vectors "
- "(%u > %u)\n",
- varying_vectors, ctx->Const.MaxVarying);
- return false;
- }
+ linker_error(prog, "shader uses too many varying vectors "
+ "(%u > %u)\n",
+ varying_vectors, ctx->Const.MaxVarying);
+ return false;
}
} else {
const unsigned float_components = varying_vectors * 4;
if (float_components > ctx->Const.MaxVarying * 4) {
- if (ctx->Const.GLSLSkipStrictMaxVaryingLimitCheck) {
- linker_warning(prog, "shader uses too many varying components "
- "(%u > %u), but the driver will try to optimize "
- "them out; this is non-portable out-of-spec "
- "behavior\n",
- float_components, ctx->Const.MaxVarying * 4);
- } else {
- linker_error(prog, "shader uses too many varying components "
- "(%u > %u)\n",
- float_components, ctx->Const.MaxVarying * 4);
- return false;
- }
+ linker_error(prog, "shader uses too many varying components "
+ "(%u > %u)\n",
+ float_components, ctx->Const.MaxVarying * 4);
+ return false;
}
}
projects / mesa.git / blobdiff