create_xfb_varying_names(mem_ctx, ifc_member_t, name, new_length, count,
NULL, NULL, varying_names);
- } else if (t->is_record()) {
+ } else if (t->is_struct()) {
for (unsigned i = 0; i < t->length; i++) {
const char *field = t->fields.structure[i].name;
size_t new_length = name_length;
new_length, count, NULL, NULL,
varying_names);
}
- } else if (t->without_array()->is_record() ||
+ } else if (t->without_array()->is_struct() ||
t->without_array()->is_interface() ||
(t->is_array() && t->fields.array->is_array())) {
for (unsigned i = 0; i < t->length; i++) {
}
if (type_to_match != output->type) {
- /* There is a bit of a special case for gl_TexCoord. This
- * built-in is unsized by default. Applications 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() || !is_gl_identifier(output->name)) {
+ if (output->type->is_struct()) {
+ /* Structures across shader stages can have different name
+ * and considered to match in type if and only if structure
+ * members match in name, type, qualification, and declaration
+ * order.
+ */
+ if (!output->type->record_compare(type_to_match, false, true)) {
+ linker_error(prog,
+ "%s shader output `%s' declared as struct `%s', "
+ "doesn't match in type with %s shader input "
+ "declared as struct `%s'\n",
+ _mesa_shader_stage_to_string(producer_stage),
+ output->name,
+ output->type->name,
+ _mesa_shader_stage_to_string(consumer_stage),
+ input->type->name);
+ }
+ } else if (!output->type->is_array() || !is_gl_identifier(output->name)) {
+ /* There is a bit of a special case for gl_TexCoord. This
+ * built-in is unsized by default. Applications 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."
+ */
linker_error(prog,
"%s shader output `%s' declared as type `%s', "
"but %s shader input declared as type `%s'\n",
* "The invariance of varyings that are declared in both the vertex
* and fragment shaders must match."
*/
- if (input->data.invariant != output->data.invariant &&
+ if (input->data.explicit_invariant != output->data.explicit_invariant &&
prog->data->Version < (prog->IsES ? 300 : 430)) {
linker_error(prog,
"%s shader output `%s' %s invariant qualifier, "
"but %s shader input %s invariant qualifier\n",
_mesa_shader_stage_to_string(producer_stage),
output->name,
- (output->data.invariant) ? "has" : "lacks",
+ (output->data.explicit_invariant) ? "has" : "lacks",
_mesa_shader_stage_to_string(consumer_stage),
- (input->data.invariant) ? "has" : "lacks");
+ (input->data.explicit_invariant) ? "has" : "lacks");
return;
}
struct explicit_location_info {
ir_variable *var;
- unsigned numerical_type;
+ bool base_type_is_integer;
+ unsigned base_type_bit_size;
unsigned interpolation;
bool centroid;
bool sample;
bool patch;
};
-static inline unsigned
-get_numerical_type(const glsl_type *type)
-{
- /* From the OpenGL 4.6 spec, section 4.4.1 Input Layout Qualifiers, Page 68,
- * (Location aliasing):
- *
- * "Further, when location aliasing, the aliases sharing the location
- * must have the same underlying numerical type (floating-point or
- * integer)
- */
- if (type->is_float() || type->is_double())
- return GLSL_TYPE_FLOAT;
- return GLSL_TYPE_INT;
-}
-
static bool
check_location_aliasing(struct explicit_location_info explicit_locations[][4],
ir_variable *var,
gl_shader_stage stage)
{
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.
+ unsigned base_type_bit_size;
+ const glsl_type *type_without_array = type->without_array();
+ const bool base_type_is_integer =
+ glsl_base_type_is_integer(type_without_array->base_type);
+ const bool is_struct = type_without_array->is_struct();
+ if (is_struct) {
+ /* structs don't have a defined underlying base type so just treat all
+ * component slots as used and set the bit size to 0. If there is
+ * location aliasing, we'll fail anyway later.
*/
last_comp = 4;
+ base_type_bit_size = 0;
} else {
- unsigned dmul = type->without_array()->is_64bit() ? 2 : 1;
- last_comp = component + type->without_array()->vector_elements * dmul;
+ unsigned dmul = type_without_array->is_64bit() ? 2 : 1;
+ last_comp = component + type_without_array->vector_elements * dmul;
+ base_type_bit_size =
+ glsl_base_type_get_bit_size(type_without_array->base_type);
}
while (location < location_limit) {
&explicit_locations[location][comp];
if (info->var) {
- /* Component aliasing is not alloed */
- if (comp >= component && comp < last_comp) {
+ if (info->var->type->without_array()->is_struct() || is_struct) {
+ /* Structs cannot share location since they are incompatible
+ * with any other underlying numerical type.
+ */
linker_error(prog,
- "%s shader has multiple outputs explicitly "
+ "%s shader has multiple %sputs sharing the "
+ "same location that don't have the same "
+ "underlying numerical type. Struct variable '%s', "
+ "location %u\n",
+ _mesa_shader_stage_to_string(stage),
+ var->data.mode == ir_var_shader_in ? "in" : "out",
+ is_struct ? var->name : info->var->name,
+ location);
+ return false;
+ } else if (comp >= component && comp < last_comp) {
+ /* Component aliasing is not allowed */
+ linker_error(prog,
+ "%s shader has multiple %sputs explicitly "
"assigned to location %d and component %d\n",
_mesa_shader_stage_to_string(stage),
+ var->data.mode == ir_var_shader_in ? "in" : "out",
location, comp);
return false;
} else {
- /* For all other used components we need to have matching
- * types, interpolation and auxiliary storage
+ /* From the OpenGL 4.60.5 spec, section 4.4.1 Input Layout
+ * Qualifiers, Page 67, (Location aliasing):
+ *
+ * " Further, when location aliasing, the aliases sharing the
+ * location must have the same underlying numerical type
+ * and bit width (floating-point or integer, 32-bit versus
+ * 64-bit, etc.) and the same auxiliary storage and
+ * interpolation qualification."
+ */
+
+ /* If the underlying numerical type isn't integer, implicitly
+ * it will be float or else we would have failed by now.
*/
- if (info->numerical_type !=
- get_numerical_type(type->without_array())) {
+ if (info->base_type_is_integer != base_type_is_integer) {
+ linker_error(prog,
+ "%s shader has multiple %sputs sharing the "
+ "same location that don't have the same "
+ "underlying numerical type. Location %u "
+ "component %u.\n",
+ _mesa_shader_stage_to_string(stage),
+ var->data.mode == ir_var_shader_in ?
+ "in" : "out", location, comp);
+ return false;
+ }
+
+ if (info->base_type_bit_size != base_type_bit_size) {
linker_error(prog,
- "Varyings sharing the same location must "
- "have the same underlying numerical type. "
- "Location %u component %u\n",
- location, comp);
+ "%s shader has multiple %sputs sharing the "
+ "same location that don't have the same "
+ "underlying numerical bit size. Location %u "
+ "component %u.\n",
+ _mesa_shader_stage_to_string(stage),
+ var->data.mode == ir_var_shader_in ?
+ "in" : "out", location, comp);
return false;
}
if (info->interpolation != interpolation) {
linker_error(prog,
- "%s shader has multiple outputs at explicit "
- "location %u with different interpolation "
- "settings\n",
- _mesa_shader_stage_to_string(stage), location);
+ "%s shader has multiple %sputs sharing the "
+ "same location that don't have the same "
+ "interpolation qualification. Location %u "
+ "component %u.\n",
+ _mesa_shader_stage_to_string(stage),
+ var->data.mode == ir_var_shader_in ?
+ "in" : "out", location, comp);
return false;
}
info->sample != sample ||
info->patch != patch) {
linker_error(prog,
- "%s shader has multiple outputs at explicit "
- "location %u with different aux storage\n",
- _mesa_shader_stage_to_string(stage), location);
+ "%s shader has multiple %sputs sharing the "
+ "same location that don't have the same "
+ "auxiliary storage qualification. Location %u "
+ "component %u.\n",
+ _mesa_shader_stage_to_string(stage),
+ var->data.mode == ir_var_shader_in ?
+ "in" : "out", location, comp);
return false;
}
}
} else if (comp >= component && comp < last_comp) {
info->var = var;
- info->numerical_type = get_numerical_type(type->without_array());
+ info->base_type_is_integer = base_type_is_integer;
+ info->base_type_bit_size = base_type_bit_size;
info->interpolation = interpolation;
info->centroid = centroid;
info->sample = sample;
/**
* Validate explicit locations for the inputs to the first stage and the
- * outputs of the last stage in an SSO program (everything in between is
- * validated in cross_validate_outputs_to_inputs).
+ * outputs of the last stage in a program, if those are not the VS and FS
+ * shaders.
*/
void
-validate_sso_explicit_locations(struct gl_context *ctx,
- struct gl_shader_program *prog,
- gl_shader_stage first_stage,
- gl_shader_stage last_stage)
+validate_first_and_last_interface_explicit_locations(struct gl_context *ctx,
+ struct gl_shader_program *prog,
+ gl_shader_stage first_stage,
+ gl_shader_stage last_stage)
{
- assert(prog->SeparateShader);
-
/* VS inputs and FS outputs are validated in
* assign_attribute_or_color_locations()
*/
gl_linked_shader *consumer)
{
glsl_symbol_table parameters;
- struct explicit_location_info explicit_locations[MAX_VARYING][4] = { 0 };
+ struct explicit_location_info output_explicit_locations[MAX_VARYING][4] = {};
+ struct explicit_location_info input_explicit_locations[MAX_VARYING][4] = {};
/* Find all shader outputs in the "producer" stage.
*/
* differently because they do not need to have matching names.
*/
if (!validate_explicit_variable_location(ctx,
- explicit_locations,
+ output_explicit_locations,
var, prog, producer)) {
return;
}
compute_variable_location_slot(input, consumer->Stage);
unsigned slot_limit = idx + num_elements;
+ if (!validate_explicit_variable_location(ctx,
+ input_explicit_locations,
+ input, prog, consumer)) {
+ return;
+ }
+
while (idx < slot_limit) {
if (idx >= MAX_VARYING) {
linker_error(prog,
return;
}
- output = explicit_locations[idx][input->data.location_frac].var;
-
- if (output == NULL ||
- input->data.location != output->data.location) {
+ output = output_explicit_locations[idx][input->data.location_frac].var;
+
+ if (output == NULL) {
+ /* A linker failure should only happen when there is no
+ * output declaration and there is Static Use of the
+ * declared input.
+ */
+ if (input->data.used) {
+ linker_error(prog,
+ "%s shader input `%s' with explicit location "
+ "has no matching output\n",
+ _mesa_shader_stage_to_string(consumer->Stage),
+ input->name);
+ break;
+ }
+ } else if (input->data.location != output->data.location) {
linker_error(prog,
"%s shader input `%s' with explicit location "
"has no matching output\n",
*/
assert(!input->data.assigned);
if (input->data.used && !input->get_interface_type() &&
- !input->data.explicit_location && !prog->SeparateShader)
+ !input->data.explicit_location)
linker_error(prog,
"%s shader input `%s' "
"has no matching output in the previous stage\n",
tfeedback_decl::store(struct gl_context *ctx, struct gl_shader_program *prog,
struct gl_transform_feedback_info *info,
unsigned buffer, unsigned buffer_index,
- const unsigned max_outputs, bool *explicit_stride,
- bool has_xfb_qualifiers) const
+ const unsigned max_outputs,
+ BITSET_WORD *used_components[MAX_FEEDBACK_BUFFERS],
+ bool *explicit_stride, bool has_xfb_qualifiers,
+ const void* mem_ctx) const
{
unsigned xfb_offset = 0;
unsigned size = this->size;
unsigned location = this->location;
unsigned location_frac = this->location_frac;
unsigned num_components = this->num_components();
+
+ /* From GL_EXT_transform_feedback:
+ *
+ * " A program will fail to link if:
+ *
+ * * the total number of components to capture is greater than the
+ * constant MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS_EXT
+ * and the buffer mode is INTERLEAVED_ATTRIBS_EXT."
+ *
+ * From GL_ARB_enhanced_layouts:
+ *
+ * " The resulting stride (implicit or explicit) must be less than or
+ * equal to the implementation-dependent constant
+ * gl_MaxTransformFeedbackInterleavedComponents."
+ */
+ if ((prog->TransformFeedback.BufferMode == GL_INTERLEAVED_ATTRIBS ||
+ has_xfb_qualifiers) &&
+ xfb_offset + num_components >
+ ctx->Const.MaxTransformFeedbackInterleavedComponents) {
+ linker_error(prog,
+ "The MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS "
+ "limit has been exceeded.");
+ return false;
+ }
+
+ /* From the OpenGL 4.60.5 spec, section 4.4.2. Output Layout Qualifiers,
+ * Page 76, (Transform Feedback Layout Qualifiers):
+ *
+ * " No aliasing in output buffers is allowed: It is a compile-time or
+ * link-time error to specify variables with overlapping transform
+ * feedback offsets."
+ */
+ const unsigned max_components =
+ ctx->Const.MaxTransformFeedbackInterleavedComponents;
+ const unsigned first_component = xfb_offset;
+ const unsigned last_component = xfb_offset + num_components - 1;
+ const unsigned start_word = BITSET_BITWORD(first_component);
+ const unsigned end_word = BITSET_BITWORD(last_component);
+ BITSET_WORD *used;
+ assert(last_component < max_components);
+
+ if (!used_components[buffer]) {
+ used_components[buffer] =
+ rzalloc_array(mem_ctx, BITSET_WORD, BITSET_WORDS(max_components));
+ }
+ used = used_components[buffer];
+
+ for (unsigned word = start_word; word <= end_word; word++) {
+ unsigned start_range = 0;
+ unsigned end_range = BITSET_WORDBITS - 1;
+
+ if (word == start_word)
+ start_range = first_component % BITSET_WORDBITS;
+
+ if (word == end_word)
+ end_range = last_component % BITSET_WORDBITS;
+
+ if (used[word] & BITSET_RANGE(start_range, end_range)) {
+ linker_error(prog,
+ "variable '%s', xfb_offset (%d) is causing aliasing.",
+ this->orig_name, xfb_offset * 4);
+ return false;
+ }
+ used[word] |= BITSET_RANGE(start_range, end_range);
+ }
+
while (num_components > 0) {
unsigned output_size = MIN2(num_components, 4 - location_frac);
assert((info->NumOutputs == 0 && max_outputs == 0) ||
return false;
}
- if ((this->offset / 4) / info->Buffers[buffer].Stride !=
- (xfb_offset - 1) / info->Buffers[buffer].Stride) {
+ if (xfb_offset > info->Buffers[buffer].Stride) {
linker_error(prog, "xfb_offset (%d) overflows xfb_stride (%d) for "
"buffer (%d)", xfb_offset * 4,
info->Buffers[buffer].Stride * 4, buffer);
info->Buffers[buffer].Stride = xfb_offset;
}
- /* From GL_EXT_transform_feedback:
- * A program will fail to link if:
- *
- * * the total number of components to capture is greater than
- * the constant MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS_EXT
- * and the buffer mode is INTERLEAVED_ATTRIBS_EXT.
- *
- * From GL_ARB_enhanced_layouts:
- *
- * "The resulting stride (implicit or explicit) must be less than or
- * equal to the implementation-dependent constant
- * gl_MaxTransformFeedbackInterleavedComponents."
- */
- if ((prog->TransformFeedback.BufferMode == GL_INTERLEAVED_ATTRIBS ||
- has_xfb_qualifiers) &&
- info->Buffers[buffer].Stride >
- ctx->Const.MaxTransformFeedbackInterleavedComponents) {
- linker_error(prog, "The MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS "
- "limit has been exceeded.");
- return false;
- }
-
store_varying:
info->Varyings[info->NumVarying].Name = ralloc_strdup(prog,
this->orig_name);
static bool
store_tfeedback_info(struct gl_context *ctx, struct gl_shader_program *prog,
unsigned num_tfeedback_decls,
- tfeedback_decl *tfeedback_decls, bool has_xfb_qualifiers)
+ tfeedback_decl *tfeedback_decls, bool has_xfb_qualifiers,
+ const void *mem_ctx)
{
if (!prog->last_vert_prog)
return true;
unsigned num_buffers = 0;
unsigned buffers = 0;
+ BITSET_WORD *used_components[MAX_FEEDBACK_BUFFERS] = {};
if (!has_xfb_qualifiers && separate_attribs_mode) {
/* GL_SEPARATE_ATTRIBS */
if (!tfeedback_decls[i].store(ctx, prog,
xfb_prog->sh.LinkedTransformFeedback,
num_buffers, num_buffers, num_outputs,
- NULL, has_xfb_qualifiers))
+ used_components, NULL,
+ has_xfb_qualifiers, mem_ctx))
return false;
buffers |= 1 << num_buffers;
if (!tfeedback_decls[i].store(ctx, prog,
xfb_prog->sh.LinkedTransformFeedback,
buffer, num_buffers, num_outputs,
- explicit_stride, has_xfb_qualifiers))
+ used_components, explicit_stride,
+ has_xfb_qualifiers, mem_ctx))
return false;
num_buffers++;
buffer_stream_id = -1;
if (!tfeedback_decls[i].store(ctx, prog,
xfb_prog->sh.LinkedTransformFeedback,
buffer, num_buffers, num_outputs,
- explicit_stride, has_xfb_qualifiers))
+ used_components, explicit_stride,
+ has_xfb_qualifiers, mem_ctx))
return false;
}
}
producer_stage == MESA_SHADER_TESS_CTRL)
return false;
- return xfb_enabled && (type->is_array() || type->is_record() ||
+ return xfb_enabled && (type->is_array() || type->is_struct() ||
type->is_matrix() || var->data.is_xfb_only);
}
if (enhanced_layouts_enabled) {
const glsl_type *type =
get_varying_type(producer_var, producer_stage);
- if (type->is_array() || type->is_matrix() || type->is_record() ||
+ if (type->is_array() || type->is_matrix() || type->is_struct() ||
type->is_double()) {
unsigned comp_slots = type->component_slots() + offset;
unsigned slots = comp_slots / 4;
{
public:
tfeedback_candidate_generator(void *mem_ctx,
- hash_table *tfeedback_candidates)
+ hash_table *tfeedback_candidates,
+ gl_shader_stage stage)
: mem_ctx(mem_ctx),
tfeedback_candidates(tfeedback_candidates),
+ stage(stage),
toplevel_var(NULL),
varying_floats(0)
{
{
/* All named varying interface blocks should be flattened by now */
assert(!var->is_interface_instance());
+ assert(var->data.mode == ir_var_shader_out);
this->toplevel_var = var;
this->varying_floats = 0;
- program_resource_visitor::process(var, false);
+ const glsl_type *t =
+ var->data.from_named_ifc_block ? var->get_interface_type() : var->type;
+ if (!var->data.patch && stage == MESA_SHADER_TESS_CTRL) {
+ assert(t->is_array());
+ t = t->fields.array;
+ }
+ program_resource_visitor::process(var, t, false);
}
private:
const enum glsl_interface_packing,
bool /* last_field */)
{
- assert(!type->without_array()->is_record());
+ assert(!type->without_array()->is_struct());
assert(!type->without_array()->is_interface());
tfeedback_candidate *candidate
*/
hash_table * const tfeedback_candidates;
+ gl_shader_stage stage;
+
/**
* Pointer to the toplevel variable that is being traversed.
*/
producer->Stage == MESA_SHADER_GEOMETRY));
if (num_tfeedback_decls > 0) {
- tfeedback_candidate_generator g(mem_ctx, tfeedback_candidates);
- g.process(output_var);
+ tfeedback_candidate_generator g(mem_ctx, tfeedback_candidates, producer->Stage);
+ /* From OpenGL 4.6 (Core Profile) spec, section 11.1.2.1
+ * ("Vertex Shader Variables / Output Variables")
+ *
+ * "Each program object can specify a set of output variables from
+ * one shader to be recorded in transform feedback mode (see
+ * section 13.3). The variables that can be recorded are those
+ * emitted by the first active shader, in order, from the
+ * following list:
+ *
+ * * geometry shader
+ * * tessellation evaluation shader
+ * * tessellation control shader
+ * * vertex shader"
+ *
+ * But on OpenGL ES 3.2, section 11.1.2.1 ("Vertex Shader
+ * Variables / Output Variables") tessellation control shader is
+ * not included in the stages list.
+ */
+ if (!prog->IsES || producer->Stage != MESA_SHADER_TESS_CTRL) {
+ g.process(output_var);
+ }
}
ir_variable *const input_var =
}
if (!store_tfeedback_info(ctx, prog, num_tfeedback_decls, tfeedback_decls,
- has_xfb_qualifiers))
+ has_xfb_qualifiers, mem_ctx))
return false;
return true;
projects / mesa.git / blobdiff