}
bool
-process_xfb_layout_qualifiers(void *mem_ctx, const gl_shader *sh,
+process_xfb_layout_qualifiers(void *mem_ctx, const gl_linked_shader *sh,
unsigned *num_tfeedback_decls,
char ***varying_names)
{
return has_xfb_qualifiers;
}
+static bool
+anonymous_struct_type_matches(const glsl_type *output_type,
+ const glsl_type *to_match)
+{
+ while (output_type->is_array() && to_match->is_array()) {
+ /* if the lengths at each level don't match fail. */
+ if (output_type->length != to_match->length)
+ return false;
+ output_type = output_type->fields.array;
+ to_match = to_match->fields.array;
+ }
+
+ if (output_type->is_array() || to_match->is_array())
+ return false;
+ return output_type->is_anonymous() &&
+ to_match->is_anonymous() &&
+ to_match->record_compare(output_type);
+}
+
/**
* Validate the types and qualifiers of an output from one stage against the
* matching input to another stage.
* fragment language."
*/
if (!output->type->is_array() || !is_gl_identifier(output->name)) {
- linker_error(prog,
- "%s shader output `%s' declared as type `%s', "
- "but %s shader input declared as type `%s'\n",
- _mesa_shader_stage_to_string(producer_stage),
- output->name,
- output->type->name,
- _mesa_shader_stage_to_string(consumer_stage),
- input->type->name);
- return;
+ bool anon_matches = anonymous_struct_type_matches(output->type, type_to_match);
+
+ if (!anon_matches) {
+ linker_error(prog,
+ "%s shader output `%s' declared as type `%s', "
+ "but %s shader input declared as type `%s'\n",
+ _mesa_shader_stage_to_string(producer_stage),
+ output->name,
+ output->type->name,
+ _mesa_shader_stage_to_string(consumer_stage),
+ input->type->name);
+ return;
+ }
}
}
*/
void
cross_validate_outputs_to_inputs(struct gl_shader_program *prog,
- gl_shader *producer, gl_shader *consumer)
+ gl_linked_shader *producer,
+ gl_linked_shader *consumer)
{
glsl_symbol_table parameters;
- ir_variable *explicit_locations[MAX_VARYING] = { NULL, };
+ ir_variable *explicit_locations[MAX_VARYINGS_INCL_PATCH][4] =
+ { {NULL, NULL} };
/* Find all shader outputs in the "producer" stage.
*/
foreach_in_list(ir_instruction, node, producer->ir) {
ir_variable *const var = node->as_variable();
- if ((var == NULL) || (var->data.mode != ir_var_shader_out))
- continue;
+ if (var == NULL || var->data.mode != ir_var_shader_out)
+ continue;
if (!var->data.explicit_location
|| var->data.location < VARYING_SLOT_VAR0)
unsigned num_elements = type->count_attribute_slots(false);
unsigned idx = var->data.location - VARYING_SLOT_VAR0;
unsigned slot_limit = idx + num_elements;
+ unsigned last_comp;
+
+ if (type->without_array()->is_record()) {
+ /* The component qualifier can't be used on structs so just treat
+ * all component slots as used.
+ */
+ last_comp = 4;
+ } else {
+ unsigned dmul = type->without_array()->is_64bit() ? 2 : 1;
+ last_comp = var->data.location_frac +
+ type->without_array()->vector_elements * dmul;
+ }
while (idx < slot_limit) {
- if (explicit_locations[idx] != NULL) {
- linker_error(prog,
- "%s shader has multiple outputs explicitly "
- "assigned to location %d\n",
- _mesa_shader_stage_to_string(producer->Stage),
- idx);
- return;
- }
+ unsigned i = var->data.location_frac;
+ while (i < last_comp) {
+ if (explicit_locations[idx][i] != NULL) {
+ linker_error(prog,
+ "%s shader has multiple outputs explicitly "
+ "assigned to location %d and component %d\n",
+ _mesa_shader_stage_to_string(producer->Stage),
+ idx, var->data.location_frac);
+ return;
+ }
- explicit_locations[idx] = var;
+ /* Make sure all component at this location have the same type.
+ */
+ for (unsigned j = 0; j < 4; j++) {
+ if (explicit_locations[idx][j] &&
+ (explicit_locations[idx][j]->type->without_array()
+ ->base_type != type->without_array()->base_type)) {
+ linker_error(prog,
+ "Varyings sharing the same location must "
+ "have the same underlying numerical type. "
+ "Location %u component %u\n", idx,
+ var->data.location_frac);
+ return;
+ }
+ }
+
+ explicit_locations[idx][i] = var;
+ i++;
+
+ /* We need to do some special handling for doubles as dvec3 and
+ * dvec4 consume two consecutive locations. We don't need to
+ * worry about components beginning at anything other than 0 as
+ * the spec does not allow this for dvec3 and dvec4.
+ */
+ if (i == 4 && last_comp > 4) {
+ last_comp = last_comp - 4;
+ /* Bump location index and reset the component index */
+ idx++;
+ i = 0;
+ }
+ }
idx++;
}
}
foreach_in_list(ir_instruction, node, consumer->ir) {
ir_variable *const input = node->as_variable();
- if ((input == NULL) || (input->data.mode != ir_var_shader_in))
- continue;
+ if (input == NULL || input->data.mode != ir_var_shader_in)
+ continue;
if (strcmp(input->name, "gl_Color") == 0 && input->data.used) {
const ir_variable *const front_color =
unsigned slot_limit = idx + num_elements;
while (idx < slot_limit) {
- output = explicit_locations[idx];
+ output = explicit_locations[idx][input->data.location_frac];
if (output == NULL ||
input->data.location != output->data.location) {
*/
void
remove_unused_shader_inputs_and_outputs(bool is_separate_shader_object,
- gl_shader *sh,
+ gl_linked_shader *sh,
enum ir_variable_mode mode)
{
if (is_separate_shader_object)
foreach_in_list(ir_instruction, node, sh->ir) {
ir_variable *const var = node->as_variable();
- if ((var == NULL) || (var->data.mode != int(mode)))
+ if (var == NULL || var->data.mode != int(mode))
continue;
/* A shader 'in' or 'out' variable is only really an input or output if
* class must behave specially to account for the fact that gl_ClipDistance
* is converted from a float[8] to a vec4[2].
*/
- if (ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].LowerClipDistance &&
+ if (ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].LowerCombinedClipCullDistance &&
strcmp(this->var_name, "gl_ClipDistance") == 0) {
this->lowered_builtin_array_variable = clip_distance;
}
+ if (ctx->Const.ShaderCompilerOptions[MESA_SHADER_VERTEX].LowerCombinedClipCullDistance &&
+ strcmp(this->var_name, "gl_CullDistance") == 0) {
+ this->lowered_builtin_array_variable = cull_distance;
+ }
if (ctx->Const.LowerTessLevel &&
(strcmp(this->var_name, "gl_TessLevelOuter") == 0))
+ this->matched_candidate->toplevel_var->data.location_frac
+ this->matched_candidate->offset;
const unsigned dmul =
- this->matched_candidate->type->without_array()->is_double() ? 2 : 1;
+ this->matched_candidate->type->without_array()->is_64bit() ? 2 : 1;
if (this->matched_candidate->type->is_array()) {
/* Array variable */
case clip_distance:
actual_array_size = prog->LastClipDistanceArraySize;
break;
+ case cull_distance:
+ actual_array_size = prog->LastCullDistanceArraySize;
+ break;
case tess_level_outer:
actual_array_size = 4;
break;
const unsigned max_outputs, bool *explicit_stride,
bool has_xfb_qualifiers) const
{
- assert(!this->next_buffer_separator);
-
+ unsigned xfb_offset = 0;
+ unsigned size = this->size;
/* Handle gl_SkipComponents. */
if (this->skip_components) {
info->Buffers[buffer].Stride += this->skip_components;
- return true;
+ size = this->skip_components;
+ goto store_varying;
+ }
+
+ if (this->next_buffer_separator) {
+ size = 0;
+ goto store_varying;
}
- unsigned xfb_offset = 0;
if (has_xfb_qualifiers) {
xfb_offset = this->offset / 4;
} else {
}
info->Varyings[info->NumVarying].Offset = xfb_offset * 4;
- unsigned location = this->location;
- unsigned location_frac = this->location_frac;
- unsigned num_components = this->num_components();
- while (num_components > 0) {
- unsigned output_size = MIN2(num_components, 4 - location_frac);
- assert((info->NumOutputs == 0 && max_outputs == 0) ||
- info->NumOutputs < max_outputs);
+ {
+ unsigned location = this->location;
+ unsigned location_frac = this->location_frac;
+ unsigned num_components = this->num_components();
+ while (num_components > 0) {
+ unsigned output_size = MIN2(num_components, 4 - location_frac);
+ assert((info->NumOutputs == 0 && max_outputs == 0) ||
+ info->NumOutputs < max_outputs);
+
+ /* From the ARB_enhanced_layouts spec:
+ *
+ * "If such a block member or variable is not written during a shader
+ * invocation, the buffer contents at the assigned offset will be
+ * undefined. Even if there are no static writes to a variable or
+ * member that is assigned a transform feedback offset, the space is
+ * still allocated in the buffer and still affects the stride."
+ */
+ if (this->is_varying_written()) {
+ info->Outputs[info->NumOutputs].ComponentOffset = location_frac;
+ info->Outputs[info->NumOutputs].OutputRegister = location;
+ info->Outputs[info->NumOutputs].NumComponents = output_size;
+ info->Outputs[info->NumOutputs].StreamId = stream_id;
+ info->Outputs[info->NumOutputs].OutputBuffer = buffer;
+ info->Outputs[info->NumOutputs].DstOffset = xfb_offset;
+ ++info->NumOutputs;
+ }
+ info->Buffers[buffer].Stream = this->stream_id;
+ xfb_offset += output_size;
- /* From the ARB_enhanced_layouts spec:
- *
- * "If such a block member or variable is not written during a shader
- * invocation, the buffer contents at the assigned offset will be
- * undefined. Even if there are no static writes to a variable or
- * member that is assigned a transform feedback offset, the space is
- * still allocated in the buffer and still affects the stride."
- */
- if (this->is_varying_written()) {
- info->Outputs[info->NumOutputs].ComponentOffset = location_frac;
- info->Outputs[info->NumOutputs].OutputRegister = location;
- info->Outputs[info->NumOutputs].NumComponents = output_size;
- info->Outputs[info->NumOutputs].StreamId = stream_id;
- info->Outputs[info->NumOutputs].OutputBuffer = buffer;
- info->Outputs[info->NumOutputs].DstOffset = xfb_offset;
- ++info->NumOutputs;
+ num_components -= output_size;
+ location++;
+ location_frac = 0;
}
- info->Buffers[buffer].Stream = this->stream_id;
- xfb_offset += output_size;
-
- num_components -= output_size;
- location++;
- location_frac = 0;
}
if (explicit_stride && explicit_stride[buffer]) {
- if (this->is_double() && info->Buffers[buffer].Stride % 2) {
+ if (this->is_64bit() && info->Buffers[buffer].Stride % 2) {
linker_error(prog, "invalid qualifier xfb_stride=%d must be a "
"multiple of 8 as its applied to a type that is or "
"contains a double.",
return false;
}
+ store_varying:
info->Varyings[info->NumVarying].Name = ralloc_strdup(prog,
this->orig_name);
info->Varyings[info->NumVarying].Type = this->type;
- info->Varyings[info->NumVarying].Size = this->size;
+ info->Varyings[info->NumVarying].Size = size;
info->Varyings[info->NumVarying].BufferIndex = buffer_index;
info->NumVarying++;
info->Buffers[buffer].NumVaryings++;
case clip_distance:
name = "gl_ClipDistanceMESA";
break;
+ case cull_distance:
+ name = "gl_CullDistanceMESA";
+ break;
case tess_level_outer:
name = "gl_TessLevelOuterMESA";
break;
}
if (tfeedback_decls[i].is_next_buffer_separator()) {
+ if (!tfeedback_decls[i].store(ctx, prog,
+ &prog->LinkedTransformFeedback,
+ buffer, num_buffers, num_outputs,
+ explicit_stride, has_xfb_qualifiers))
+ return false;
num_buffers++;
buffer_stream_id = -1;
continue;
- } else if (buffer_stream_id == -1) {
- /* First varying writing to this buffer: remember its stream */
- buffer_stream_id = (int) tfeedback_decls[i].get_stream_id();
- } else if (buffer_stream_id !=
- (int) tfeedback_decls[i].get_stream_id()) {
- /* Varying writes to the same buffer from a different stream */
- linker_error(prog,
- "Transform feedback can't capture varyings belonging "
- "to different vertex streams in a single buffer. "
- "Varying %s writes to buffer from stream %u, other "
- "varyings in the same buffer write from stream %u.",
- tfeedback_decls[i].name(),
- tfeedback_decls[i].get_stream_id(),
- buffer_stream_id);
- return false;
+ } else if (tfeedback_decls[i].is_varying()) {
+ if (buffer_stream_id == -1) {
+ /* First varying writing to this buffer: remember its stream */
+ buffer_stream_id = (int) tfeedback_decls[i].get_stream_id();
+ } else if (buffer_stream_id !=
+ (int) tfeedback_decls[i].get_stream_id()) {
+ /* Varying writes to the same buffer from a different stream */
+ linker_error(prog,
+ "Transform feedback can't capture varyings belonging "
+ "to different vertex streams in a single buffer. "
+ "Varying %s writes to buffer from stream %u, other "
+ "varyings in the same buffer write from stream %u.",
+ tfeedback_decls[i].name(),
+ tfeedback_decls[i].get_stream_id(),
+ buffer_stream_id);
+ return false;
+ }
}
if (has_xfb_qualifiers) {
~varying_matches();
void record(ir_variable *producer_var, ir_variable *consumer_var);
unsigned assign_locations(struct gl_shader_program *prog,
- uint64_t reserved_slots, bool separate_shader);
+ uint64_t reserved_slots);
void store_locations() const;
private:
/**
- * Packing is always safe on individual arrays, structure and matices. It is
- * also safe if the varying is only used for transform feedback.
+ * Packing is always safe on individual arrays, structures, and matrices. It
+ * is also safe if the varying is only used for transform feedback.
*/
bool
varying_matches::is_varying_packing_safe(const glsl_type *type,
*/
unsigned
varying_matches::assign_locations(struct gl_shader_program *prog,
- uint64_t reserved_slots,
- bool separate_shader)
+ uint64_t reserved_slots)
{
/* If packing has been disabled then we cannot safely sort the varyings by
* class as it may mean we are using a version of OpenGL where
foreach_in_list(ir_instruction, node, ir) {
ir_variable *const input_var = node->as_variable();
- if ((input_var != NULL) && (input_var->data.mode == ir_var_shader_in)) {
+ if (input_var != NULL && input_var->data.mode == ir_var_shader_in) {
/* All interface blocks should have been lowered by this point */
assert(!input_var->type->is_interface());
/**
* Generate a bitfield map of the explicit locations for shader varyings.
*
- * In theory a 32 bits value will be enough but a 64 bits value is future proof.
+ * Note: For Tessellation shaders we are sitting right on the limits of the
+ * 64 bit map. Per-vertex and per-patch both have separate location domains
+ * with a max of MAX_VARYING.
*/
uint64_t
-reserved_varying_slot(struct gl_shader *stage, ir_variable_mode io_mode)
+reserved_varying_slot(struct gl_linked_shader *stage,
+ ir_variable_mode io_mode)
{
assert(io_mode == ir_var_shader_in || io_mode == ir_var_shader_out);
- assert(MAX_VARYING <= 64); /* avoid an overflow of the returned value */
+ /* Avoid an overflow of the returned value */
+ assert(MAX_VARYINGS_INCL_PATCH <= 64);
uint64_t slots = 0;
int var_slot;
unsigned num_elements = get_varying_type(var, stage->Stage)
->count_attribute_slots(stage->Stage == MESA_SHADER_VERTEX);
for (unsigned i = 0; i < num_elements; i++) {
- if (var_slot >= 0 && var_slot < MAX_VARYING)
+ if (var_slot >= 0 && var_slot < MAX_VARYINGS_INCL_PATCH)
slots |= UINT64_C(1) << var_slot;
var_slot += 1;
}
assign_varying_locations(struct gl_context *ctx,
void *mem_ctx,
struct gl_shader_program *prog,
- gl_shader *producer, gl_shader *consumer,
+ gl_linked_shader *producer,
+ gl_linked_shader *consumer,
unsigned num_tfeedback_decls,
- tfeedback_decl *tfeedback_decls)
+ tfeedback_decl *tfeedback_decls,
+ const uint64_t reserved_slots)
{
/* Tessellation shaders treat inputs and outputs as shared memory and can
* access inputs and outputs of other invocations.
/* Disable varying packing for GL 4.4+ as there is no guarantee
* that interpolation qualifiers will match between shaders in these
- * versions. We also disable packing on outerward facing interfaces for
+ * versions. We also disable packing on outward facing interfaces for
* SSO because in ES we need to retain the unpacked varying information
* for draw time validation. For desktop GL we could allow packing for
- * versions < 4.4 but its just safer not to do packing.
+ * versions < 4.4 but it's just safer not to do packing.
*
* Packing is still enabled on individual arrays, structs, and matrices as
* these are required by the transform feedback code and it is still safe
foreach_in_list(ir_instruction, node, producer->ir) {
ir_variable *const output_var = node->as_variable();
- if ((output_var == NULL) ||
- (output_var->data.mode != ir_var_shader_out))
+ if (output_var == NULL || output_var->data.mode != ir_var_shader_out)
continue;
/* Only geometry shaders can use non-zero streams */
consumer_interface_inputs,
consumer_inputs_with_locations);
- /* If a matching input variable was found, add this ouptut (and the
+ /* If a matching input variable was found, add this output (and the
* input) to the set. If this is a separable program and there is no
* consumer stage, add the output.
*
* within a patch and can be used as shared memory.
*/
if (input_var || (prog->SeparateShader && consumer == NULL) ||
- producer->Type == GL_TESS_CONTROL_SHADER) {
+ producer->Stage == MESA_SHADER_TESS_CTRL) {
matches.record(output_var, input_var);
}
foreach_in_list(ir_instruction, node, consumer->ir) {
ir_variable *const input_var = node->as_variable();
- if ((input_var == NULL) ||
- (input_var->data.mode != ir_var_shader_in))
+ if (input_var == NULL || input_var->data.mode != ir_var_shader_in)
continue;
matches.record(NULL, input_var);
}
}
- const uint64_t reserved_slots =
- reserved_varying_slot(producer, ir_var_shader_out) |
- reserved_varying_slot(consumer, ir_var_shader_in);
-
- const unsigned slots_used = matches.assign_locations(prog, reserved_slots,
- prog->SeparateShader);
+ const unsigned slots_used = matches.assign_locations(prog, reserved_slots);
matches.store_locations();
for (unsigned i = 0; i < num_tfeedback_decls; ++i) {
bool
check_against_output_limit(struct gl_context *ctx,
struct gl_shader_program *prog,
- gl_shader *producer)
+ gl_linked_shader *producer,
+ unsigned num_explicit_locations)
{
- unsigned output_vectors = 0;
+ unsigned output_vectors = num_explicit_locations;
foreach_in_list(ir_instruction, node, producer->ir) {
ir_variable *const var = node->as_variable();
- if (var && var->data.mode == ir_var_shader_out &&
+ if (var && !var->data.explicit_location &&
+ var->data.mode == ir_var_shader_out &&
var_counts_against_varying_limit(producer->Stage, var)) {
/* outputs for fragment shader can't be doubles */
output_vectors += var->type->count_attribute_slots(false);
bool
check_against_input_limit(struct gl_context *ctx,
struct gl_shader_program *prog,
- gl_shader *consumer)
+ gl_linked_shader *consumer,
+ unsigned num_explicit_locations)
{
- unsigned input_vectors = 0;
+ unsigned input_vectors = num_explicit_locations;
foreach_in_list(ir_instruction, node, consumer->ir) {
ir_variable *const var = node->as_variable();
- if (var && var->data.mode == ir_var_shader_in &&
+ if (var && !var->data.explicit_location &&
+ var->data.mode == ir_var_shader_in &&
var_counts_against_varying_limit(consumer->Stage, var)) {
/* vertex inputs aren't varying counted */
input_vectors += var->type->count_attribute_slots(false);
projects / mesa.git / blobdiff