virtual ir_visitor_status visit_enter(ir_call *ir)
{
- exec_list_iterator sig_iter = ir->callee->parameters.iterator();
- foreach_iter(exec_list_iterator, iter, *ir) {
- ir_rvalue *param_rval = (ir_rvalue *)iter.get();
- ir_variable *sig_param = (ir_variable *)sig_iter.get();
+ foreach_two_lists(formal_node, &ir->callee->parameters,
+ actual_node, &ir->actual_parameters) {
+ ir_rvalue *param_rval = (ir_rvalue *) actual_node;
+ ir_variable *sig_param = (ir_variable *) formal_node;
if (sig_param->data.mode == ir_var_function_out ||
sig_param->data.mode == ir_var_function_inout) {
return visit_stop;
}
}
- sig_iter.next();
}
if (ir->return_deref != NULL) {
{
va_list ap;
- ralloc_strcat(&prog->InfoLog, "error: ");
+ ralloc_strcat(&prog->InfoLog, "warning: ");
va_start(ap, fmt);
ralloc_vasprintf_append(&prog->InfoLog, fmt, ap);
va_end(ap);
if (var->type->length != 0) {
existing->type = var->type;
}
+ } else if (var->type->is_record()
+ && existing->type->is_record()
+ && existing->type->record_compare(var->type)) {
+ existing->type = var->type;
} else {
linker_error(prog, "%s `%s' declared as type "
"`%s' and type `%s'\n",
hash_table *unnamed_interfaces;
};
+/**
+ * Performs the cross-validation of layout qualifiers specified in
+ * redeclaration of gl_FragCoord for the attached fragment shaders,
+ * and propagates them to the linked FS and linked shader program.
+ */
+static void
+link_fs_input_layout_qualifiers(struct gl_shader_program *prog,
+ struct gl_shader *linked_shader,
+ struct gl_shader **shader_list,
+ unsigned num_shaders)
+{
+ linked_shader->redeclares_gl_fragcoord = false;
+ linked_shader->uses_gl_fragcoord = false;
+ linked_shader->origin_upper_left = false;
+ linked_shader->pixel_center_integer = false;
+
+ if (linked_shader->Stage != MESA_SHADER_FRAGMENT || prog->Version < 150)
+ return;
+
+ for (unsigned i = 0; i < num_shaders; i++) {
+ struct gl_shader *shader = shader_list[i];
+ /* From the GLSL 1.50 spec, page 39:
+ *
+ * "If gl_FragCoord is redeclared in any fragment shader in a program,
+ * it must be redeclared in all the fragment shaders in that program
+ * that have a static use gl_FragCoord."
+ *
+ * Exclude the case when one of the 'linked_shader' or 'shader' redeclares
+ * gl_FragCoord with no layout qualifiers but the other one doesn't
+ * redeclare it. If we strictly follow GLSL 1.50 spec's language, it
+ * should be a link error. But, generating link error for this case will
+ * be a wrong behaviour which spec didn't intend to do and it could also
+ * break some applications.
+ */
+ if ((linked_shader->redeclares_gl_fragcoord
+ && !shader->redeclares_gl_fragcoord
+ && shader->uses_gl_fragcoord
+ && (linked_shader->origin_upper_left
+ || linked_shader->pixel_center_integer))
+ || (shader->redeclares_gl_fragcoord
+ && !linked_shader->redeclares_gl_fragcoord
+ && linked_shader->uses_gl_fragcoord
+ && (shader->origin_upper_left
+ || shader->pixel_center_integer))) {
+ linker_error(prog, "fragment shader defined with conflicting "
+ "layout qualifiers for gl_FragCoord\n");
+ }
+
+ /* From the GLSL 1.50 spec, page 39:
+ *
+ * "All redeclarations of gl_FragCoord in all fragment shaders in a
+ * single program must have the same set of qualifiers."
+ */
+ if (linked_shader->redeclares_gl_fragcoord && shader->redeclares_gl_fragcoord
+ && (shader->origin_upper_left != linked_shader->origin_upper_left
+ || shader->pixel_center_integer != linked_shader->pixel_center_integer)) {
+ linker_error(prog, "fragment shader defined with conflicting "
+ "layout qualifiers for gl_FragCoord\n");
+ }
+
+ /* Update the linked shader state. Note that uses_gl_fragcoord should
+ * accumulate the results. The other values should replace. If there
+ * are multiple redeclarations, all the fields except uses_gl_fragcoord
+ * are already known to be the same.
+ */
+ if (shader->redeclares_gl_fragcoord || shader->uses_gl_fragcoord) {
+ linked_shader->redeclares_gl_fragcoord =
+ shader->redeclares_gl_fragcoord;
+ linked_shader->uses_gl_fragcoord = linked_shader->uses_gl_fragcoord
+ || shader->uses_gl_fragcoord;
+ linked_shader->origin_upper_left = shader->origin_upper_left;
+ linked_shader->pixel_center_integer = shader->pixel_center_integer;
+ }
+ }
+}
+
/**
* Performs the cross-validation of geometry shader max_vertices and
* primitive type layout qualifiers for the attached geometry shaders,
unsigned num_shaders)
{
linked_shader->Geom.VerticesOut = 0;
+ linked_shader->Geom.Invocations = 0;
linked_shader->Geom.InputType = PRIM_UNKNOWN;
linked_shader->Geom.OutputType = PRIM_UNKNOWN;
}
linked_shader->Geom.VerticesOut = shader->Geom.VerticesOut;
}
+
+ if (shader->Geom.Invocations != 0) {
+ if (linked_shader->Geom.Invocations != 0 &&
+ linked_shader->Geom.Invocations != shader->Geom.Invocations) {
+ linker_error(prog, "geometry shader defined with conflicting "
+ "invocation count (%d and %d)\n",
+ linked_shader->Geom.Invocations,
+ shader->Geom.Invocations);
+ return;
+ }
+ linked_shader->Geom.Invocations = shader->Geom.Invocations;
+ }
}
/* Just do the intrastage -> interstage propagation right now,
return;
}
prog->Geom.VerticesOut = linked_shader->Geom.VerticesOut;
+
+ if (linked_shader->Geom.Invocations == 0)
+ linked_shader->Geom.Invocations = 1;
+
+ prog->Geom.Invocations = linked_shader->Geom.Invocations;
+}
+
+
+/**
+ * Perform cross-validation of compute shader local_size_{x,y,z} layout
+ * qualifiers for the attached compute shaders, and propagate them to the
+ * linked CS and linked shader program.
+ */
+static void
+link_cs_input_layout_qualifiers(struct gl_shader_program *prog,
+ struct gl_shader *linked_shader,
+ struct gl_shader **shader_list,
+ unsigned num_shaders)
+{
+ for (int i = 0; i < 3; i++)
+ linked_shader->Comp.LocalSize[i] = 0;
+
+ /* This function is called for all shader stages, but it only has an effect
+ * for compute shaders.
+ */
+ if (linked_shader->Stage != MESA_SHADER_COMPUTE)
+ return;
+
+ /* From the ARB_compute_shader spec, in the section describing local size
+ * declarations:
+ *
+ * If multiple compute shaders attached to a single program object
+ * declare local work-group size, the declarations must be identical;
+ * otherwise a link-time error results. Furthermore, if a program
+ * object contains any compute shaders, at least one must contain an
+ * input layout qualifier specifying the local work sizes of the
+ * program, or a link-time error will occur.
+ */
+ for (unsigned sh = 0; sh < num_shaders; sh++) {
+ struct gl_shader *shader = shader_list[sh];
+
+ if (shader->Comp.LocalSize[0] != 0) {
+ if (linked_shader->Comp.LocalSize[0] != 0) {
+ for (int i = 0; i < 3; i++) {
+ if (linked_shader->Comp.LocalSize[i] !=
+ shader->Comp.LocalSize[i]) {
+ linker_error(prog, "compute shader defined with conflicting "
+ "local sizes\n");
+ return;
+ }
+ }
+ }
+ for (int i = 0; i < 3; i++)
+ linked_shader->Comp.LocalSize[i] = shader->Comp.LocalSize[i];
+ }
+ }
+
+ /* Just do the intrastage -> interstage propagation right now,
+ * since we already know we're in the right type of shader program
+ * for doing it.
+ */
+ if (linked_shader->Comp.LocalSize[0] == 0) {
+ linker_error(prog, "compute shader didn't declare local size\n");
+ return;
+ }
+ for (int i = 0; i < 3; i++)
+ prog->Comp.LocalSize[i] = linked_shader->Comp.LocalSize[i];
}
+
/**
* Combine a group of shaders for a single stage to generate a linked shader
*
if (other == NULL)
continue;
- foreach_iter (exec_list_iterator, iter, *f) {
- ir_function_signature *sig =
- (ir_function_signature *) iter.get();
+ foreach_list(n, &f->signatures) {
+ ir_function_signature *sig = (ir_function_signature *) n;
if (!sig->is_defined || sig->is_builtin())
continue;
linked->NumUniformBlocks = num_uniform_blocks;
ralloc_steal(linked, linked->UniformBlocks);
+ link_fs_input_layout_qualifiers(prog, linked, shader_list, num_shaders);
link_gs_inout_layout_qualifiers(prog, linked, shader_list, num_shaders);
+ link_cs_input_layout_qualifiers(prog, linked, shader_list, num_shaders);
populate_symbol_table(linked);
if (linked->Stage == MESA_SHADER_GEOMETRY) {
unsigned num_vertices = vertices_per_prim(prog->Geom.InputType);
geom_array_resize_visitor input_resize_visitor(num_vertices, prog);
- foreach_iter(exec_list_iterator, iter, *linked->ir) {
- ir_instruction *ir = (ir_instruction *)iter.get();
+ foreach_list(n, linked->ir) {
+ ir_instruction *ir = (ir_instruction *) n;
ir->accept(&input_resize_visitor);
}
}
* active attribute array, both of which require multiple
* contiguous generic attributes."
*
- * Previous versions of the spec contain similar language but omit
- * the bit about attribute arrays.
+ * I think above text prohibits the aliasing of explicit and
+ * automatic assignments. But, aliasing is allowed in manual
+ * assignments of attribute locations. See below comments for
+ * the details.
*
- * Page 61 of the OpenGL 4.0 spec also says:
+ * From OpenGL 4.0 spec, page 61:
*
* "It is possible for an application to bind more than one
* attribute name to the same location. This is referred to as
* but implementations are not required to generate an error
* in this case."
*
- * These two paragraphs are either somewhat contradictory, or I
- * don't fully understand one or both of them.
- */
- /* FINISHME: The code as currently written does not support
- * FINISHME: attribute location aliasing (see comment above).
+ * From GLSL 4.30 spec, page 54:
+ *
+ * "A program will fail to link if any two non-vertex shader
+ * input variables are assigned to the same location. For
+ * vertex shaders, multiple input variables may be assigned
+ * to the same location using either layout qualifiers or via
+ * the OpenGL API. However, such aliasing is intended only to
+ * support vertex shaders where each execution path accesses
+ * at most one input per each location. Implementations are
+ * permitted, but not required, to generate link-time errors
+ * if they detect that every path through the vertex shader
+ * executable accesses multiple inputs assigned to any single
+ * location. For all shader types, a program will fail to link
+ * if explicit location assignments leave the linker unable
+ * to find space for other variables without explicit
+ * assignments."
+ *
+ * From OpenGL ES 3.0 spec, page 56:
+ *
+ * "Binding more than one attribute name to the same location
+ * is referred to as aliasing, and is not permitted in OpenGL
+ * ES Shading Language 3.00 vertex shaders. LinkProgram will
+ * fail when this condition exists. However, aliasing is
+ * possible in OpenGL ES Shading Language 1.00 vertex shaders.
+ * This will only work if only one of the aliased attributes
+ * is active in the executable program, or if no path through
+ * the shader consumes more than one attribute of a set of
+ * attributes aliased to the same location. A link error can
+ * occur if the linker determines that every path through the
+ * shader consumes multiple aliased attributes, but implemen-
+ * tations are not required to generate an error in this case."
+ *
+ * After looking at above references from OpenGL, OpenGL ES and
+ * GLSL specifications, we allow aliasing of vertex input variables
+ * in: OpenGL 2.0 (and above) and OpenGL ES 2.0.
+ *
+ * NOTE: This is not required by the spec but its worth mentioning
+ * here that we're not doing anything to make sure that no path
+ * through the vertex shader executable accesses multiple inputs
+ * assigned to any single location.
*/
+
/* Mask representing the contiguous slots that will be used by
* this attribute.
*/
const unsigned attr = var->data.location - generic_base;
const unsigned use_mask = (1 << slots) - 1;
+ const char *const string = (target_index == MESA_SHADER_VERTEX)
+ ? "vertex shader input" : "fragment shader output";
+
+ /* Generate a link error if the requested locations for this
+ * attribute exceed the maximum allowed attribute location.
+ */
+ if (attr + slots > max_index) {
+ linker_error(prog,
+ "insufficient contiguous locations "
+ "available for %s `%s' %d %d %d", string,
+ var->name, used_locations, use_mask, attr);
+ return false;
+ }
/* Generate a link error if the set of bits requested for this
* attribute overlaps any previously allocated bits.
*/
if ((~(use_mask << attr) & used_locations) != used_locations) {
- const char *const string = (target_index == MESA_SHADER_VERTEX)
- ? "vertex shader input" : "fragment shader output";
- linker_error(prog,
- "insufficient contiguous locations "
- "available for %s `%s' %d %d %d", string,
- var->name, used_locations, use_mask, attr);
- return false;
+ if (target_index == MESA_SHADER_FRAGMENT ||
+ (prog->IsES && prog->Version >= 300)) {
+ linker_error(prog,
+ "overlapping location is assigned "
+ "to %s `%s' %d %d %d\n", string,
+ var->name, used_locations, use_mask, attr);
+ return false;
+ } else {
+ linker_warning(prog,
+ "overlapping location is assigned "
+ "to %s `%s' %d %d %d\n", string,
+ var->name, used_locations, use_mask, attr);
+ }
}
used_locations |= (use_mask << attr);
static void
check_resources(struct gl_context *ctx, struct gl_shader_program *prog)
{
- const unsigned max_samplers[] = {
- ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits,
- ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits,
- ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits
- };
- STATIC_ASSERT(Elements(max_samplers) == MESA_SHADER_STAGES);
-
- const unsigned max_default_uniform_components[] = {
- ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents,
- ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxUniformComponents,
- ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents
- };
- STATIC_ASSERT(Elements(max_default_uniform_components) ==
- MESA_SHADER_STAGES);
-
- const unsigned max_combined_uniform_components[] = {
- ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents,
- ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxCombinedUniformComponents,
- ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents
- };
- STATIC_ASSERT(Elements(max_combined_uniform_components) ==
- MESA_SHADER_STAGES);
-
- const unsigned max_uniform_blocks[] = {
- ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformBlocks,
- ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxUniformBlocks,
- ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformBlocks
- };
- STATIC_ASSERT(Elements(max_uniform_blocks) == MESA_SHADER_STAGES);
-
for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
struct gl_shader *sh = prog->_LinkedShaders[i];
if (sh == NULL)
continue;
- if (sh->num_samplers > max_samplers[i]) {
+ if (sh->num_samplers > ctx->Const.Program[i].MaxTextureImageUnits) {
linker_error(prog, "Too many %s shader texture samplers",
_mesa_shader_stage_to_string(i));
}
- if (sh->num_uniform_components > max_default_uniform_components[i]) {
+ if (sh->num_uniform_components >
+ ctx->Const.Program[i].MaxUniformComponents) {
if (ctx->Const.GLSLSkipStrictMaxUniformLimitCheck) {
linker_warning(prog, "Too many %s shader default uniform block "
"components, but the driver will try to optimize "
}
if (sh->num_combined_uniform_components >
- max_combined_uniform_components[i]) {
+ ctx->Const.Program[i].MaxCombinedUniformComponents) {
if (ctx->Const.GLSLSkipStrictMaxUniformLimitCheck) {
linker_warning(prog, "Too many %s shader uniform components, "
"but the driver will try to optimize them out; "
ctx->Const.MaxCombinedUniformBlocks);
} else {
for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
- if (blocks[i] > max_uniform_blocks[i]) {
+ const unsigned max_uniform_blocks =
+ ctx->Const.Program[i].MaxUniformBlocks;
+ if (blocks[i] > max_uniform_blocks) {
linker_error(prog, "Too many %s uniform blocks (%d/%d)",
_mesa_shader_stage_to_string(i),
blocks[i],
- max_uniform_blocks[i]);
+ max_uniform_blocks);
break;
}
}
}
}
+/**
+ * Validate shader image resources.
+ */
+static void
+check_image_resources(struct gl_context *ctx, struct gl_shader_program *prog)
+{
+ unsigned total_image_units = 0;
+ unsigned fragment_outputs = 0;
+
+ if (!ctx->Extensions.ARB_shader_image_load_store)
+ return;
+
+ for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
+ struct gl_shader *sh = prog->_LinkedShaders[i];
+
+ if (sh) {
+ if (sh->NumImages > ctx->Const.Program[i].MaxImageUniforms)
+ linker_error(prog, "Too many %s shader image uniforms",
+ _mesa_shader_stage_to_string(i));
+
+ total_image_units += sh->NumImages;
+
+ if (i == MESA_SHADER_FRAGMENT) {
+ foreach_list(node, sh->ir) {
+ ir_variable *var = ((ir_instruction *)node)->as_variable();
+ if (var && var->data.mode == ir_var_shader_out)
+ fragment_outputs += var->type->count_attribute_slots();
+ }
+ }
+ }
+ }
+
+ if (total_image_units > ctx->Const.MaxCombinedImageUniforms)
+ linker_error(prog, "Too many combined image uniforms");
+
+ if (total_image_units + fragment_outputs >
+ ctx->Const.MaxCombinedImageUnitsAndFragmentOutputs)
+ linker_error(prog, "Too many combined image uniforms and fragment outputs");
+}
+
void
link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
{
/* Separate the shaders into groups based on their type.
*/
- struct gl_shader **vert_shader_list;
- unsigned num_vert_shaders = 0;
- struct gl_shader **frag_shader_list;
- unsigned num_frag_shaders = 0;
- struct gl_shader **geom_shader_list;
- unsigned num_geom_shaders = 0;
-
- vert_shader_list = (struct gl_shader **)
- calloc(prog->NumShaders, sizeof(struct gl_shader *));
- frag_shader_list = (struct gl_shader **)
- calloc(prog->NumShaders, sizeof(struct gl_shader *));
- geom_shader_list = (struct gl_shader **)
- calloc(prog->NumShaders, sizeof(struct gl_shader *));
+ struct gl_shader **shader_list[MESA_SHADER_STAGES];
+ unsigned num_shaders[MESA_SHADER_STAGES];
+
+ for (int i = 0; i < MESA_SHADER_STAGES; i++) {
+ shader_list[i] = (struct gl_shader **)
+ calloc(prog->NumShaders, sizeof(struct gl_shader *));
+ num_shaders[i] = 0;
+ }
unsigned min_version = UINT_MAX;
unsigned max_version = 0;
goto done;
}
- switch (prog->Shaders[i]->Stage) {
- case MESA_SHADER_VERTEX:
- vert_shader_list[num_vert_shaders] = prog->Shaders[i];
- num_vert_shaders++;
- break;
- case MESA_SHADER_FRAGMENT:
- frag_shader_list[num_frag_shaders] = prog->Shaders[i];
- num_frag_shaders++;
- break;
- case MESA_SHADER_GEOMETRY:
- geom_shader_list[num_geom_shaders] = prog->Shaders[i];
- num_geom_shaders++;
- break;
- }
+ gl_shader_stage shader_type = prog->Shaders[i]->Stage;
+ shader_list[shader_type][num_shaders[shader_type]] = prog->Shaders[i];
+ num_shaders[shader_type]++;
}
/* In desktop GLSL, different shader versions may be linked together. In
/* Geometry shaders have to be linked with vertex shaders.
*/
- if (num_geom_shaders > 0 && num_vert_shaders == 0) {
+ if (num_shaders[MESA_SHADER_GEOMETRY] > 0 &&
+ num_shaders[MESA_SHADER_VERTEX] == 0) {
linker_error(prog, "Geometry shader must be linked with "
"vertex shader\n");
goto done;
}
+ /* Compute shaders have additional restrictions. */
+ if (num_shaders[MESA_SHADER_COMPUTE] > 0 &&
+ num_shaders[MESA_SHADER_COMPUTE] != prog->NumShaders) {
+ linker_error(prog, "Compute shaders may not be linked with any other "
+ "type of shader\n");
+ }
+
for (unsigned int i = 0; i < MESA_SHADER_STAGES; i++) {
if (prog->_LinkedShaders[i] != NULL)
ctx->Driver.DeleteShader(ctx, prog->_LinkedShaders[i]);
/* Link all shaders for a particular stage and validate the result.
*/
- if (num_vert_shaders > 0) {
- gl_shader *const sh =
- link_intrastage_shaders(mem_ctx, ctx, prog, vert_shader_list,
- num_vert_shaders);
-
- if (!prog->LinkStatus)
- goto done;
-
- validate_vertex_shader_executable(prog, sh);
- if (!prog->LinkStatus)
- goto done;
- prog->LastClipDistanceArraySize = prog->Vert.ClipDistanceArraySize;
-
- _mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_VERTEX],
- sh);
- }
+ for (int stage = 0; stage < MESA_SHADER_STAGES; stage++) {
+ if (num_shaders[stage] > 0) {
+ gl_shader *const sh =
+ link_intrastage_shaders(mem_ctx, ctx, prog, shader_list[stage],
+ num_shaders[stage]);
- if (num_frag_shaders > 0) {
- gl_shader *const sh =
- link_intrastage_shaders(mem_ctx, ctx, prog, frag_shader_list,
- num_frag_shaders);
-
- if (!prog->LinkStatus)
- goto done;
+ if (!prog->LinkStatus)
+ goto done;
- validate_fragment_shader_executable(prog, sh);
- if (!prog->LinkStatus)
- goto done;
+ switch (stage) {
+ case MESA_SHADER_VERTEX:
+ validate_vertex_shader_executable(prog, sh);
+ break;
+ case MESA_SHADER_GEOMETRY:
+ validate_geometry_shader_executable(prog, sh);
+ break;
+ case MESA_SHADER_FRAGMENT:
+ validate_fragment_shader_executable(prog, sh);
+ break;
+ }
+ if (!prog->LinkStatus)
+ goto done;
- _mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_FRAGMENT],
- sh);
+ _mesa_reference_shader(ctx, &prog->_LinkedShaders[stage], sh);
+ }
}
- if (num_geom_shaders > 0) {
- gl_shader *const sh =
- link_intrastage_shaders(mem_ctx, ctx, prog, geom_shader_list,
- num_geom_shaders);
-
- if (!prog->LinkStatus)
- goto done;
-
- validate_geometry_shader_executable(prog, sh);
- if (!prog->LinkStatus)
- goto done;
+ if (num_shaders[MESA_SHADER_GEOMETRY] > 0)
prog->LastClipDistanceArraySize = prog->Geom.ClipDistanceArraySize;
-
- _mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_GEOMETRY],
- sh);
- }
+ else if (num_shaders[MESA_SHADER_VERTEX] > 0)
+ prog->LastClipDistanceArraySize = prog->Vert.ClipDistanceArraySize;
+ else
+ prog->LastClipDistanceArraySize = 0; /* Not used */
/* Here begins the inter-stage linking phase. Some initial validation is
* performed, then locations are assigned for uniforms, attributes, and
unsigned prev;
- for (prev = 0; prev < MESA_SHADER_STAGES; prev++) {
+ for (prev = 0; prev <= MESA_SHADER_FRAGMENT; prev++) {
if (prog->_LinkedShaders[prev] != NULL)
break;
}
/* Validate the inputs of each stage with the output of the preceding
* stage.
*/
- for (unsigned i = prev + 1; i < MESA_SHADER_STAGES; i++) {
+ for (unsigned i = prev + 1; i <= MESA_SHADER_FRAGMENT; i++) {
if (prog->_LinkedShaders[i] == NULL)
continue;
lower_clip_distance(prog->_LinkedShaders[i]);
}
- unsigned max_unroll = ctx->ShaderCompilerOptions[i].MaxUnrollIterations;
-
- while (do_common_optimization(prog->_LinkedShaders[i]->ir, true, false, max_unroll, &ctx->ShaderCompilerOptions[i]))
+ while (do_common_optimization(prog->_LinkedShaders[i]->ir, true, false,
+ &ctx->ShaderCompilerOptions[i],
+ ctx->Const.NativeIntegers))
;
}
/* Mark all generic shader inputs and outputs as unpaired. */
- if (prog->_LinkedShaders[MESA_SHADER_VERTEX] != NULL) {
- link_invalidate_variable_locations(
- prog->_LinkedShaders[MESA_SHADER_VERTEX]->ir);
- }
- if (prog->_LinkedShaders[MESA_SHADER_GEOMETRY] != NULL) {
- link_invalidate_variable_locations(
- prog->_LinkedShaders[MESA_SHADER_GEOMETRY]->ir);
- }
- if (prog->_LinkedShaders[MESA_SHADER_FRAGMENT] != NULL) {
- link_invalidate_variable_locations(
- prog->_LinkedShaders[MESA_SHADER_FRAGMENT]->ir);
+ for (unsigned i = MESA_SHADER_VERTEX; i <= MESA_SHADER_FRAGMENT; i++) {
+ if (prog->_LinkedShaders[i] != NULL) {
+ link_invalidate_variable_locations(prog->_LinkedShaders[i]->ir);
+ }
}
/* FINISHME: The value of the max_attribute_index parameter is
}
unsigned first;
- for (first = 0; first < MESA_SHADER_STAGES; first++) {
+ for (first = 0; first <= MESA_SHADER_FRAGMENT; first++) {
if (prog->_LinkedShaders[first] != NULL)
break;
}
* eliminated if they are (transitively) not used in a later stage.
*/
int last, next;
- for (last = MESA_SHADER_STAGES-1; last >= 0; last--) {
+ for (last = MESA_SHADER_FRAGMENT; last >= 0; last--) {
if (prog->_LinkedShaders[last] != NULL)
break;
}
store_fragdepth_layout(prog);
check_resources(ctx, prog);
+ check_image_resources(ctx, prog);
link_check_atomic_counter_resources(ctx, prog);
if (!prog->LinkStatus)
goto done;
/* OpenGL ES requires that a vertex shader and a fragment shader both be
- * present in a linked program. By checking prog->IsES, we also
- * catch the GL_ARB_ES2_compatibility case.
+ * present in a linked program. GL_ARB_ES2_compatibility doesn't say
+ * anything about shader linking when one of the shaders (vertex or
+ * fragment shader) is absent. So, the extension shouldn't change the
+ * behavior specified in GLSL specification.
*/
- if (!prog->InternalSeparateShader &&
- (ctx->API == API_OPENGLES2 || prog->IsES)) {
+ if (!prog->InternalSeparateShader && ctx->API == API_OPENGLES2) {
if (prog->_LinkedShaders[MESA_SHADER_VERTEX] == NULL) {
linker_error(prog, "program lacks a vertex shader\n");
} else if (prog->_LinkedShaders[MESA_SHADER_FRAGMENT] == NULL) {
/* FINISHME: Assign fragment shader output locations. */
done:
- free(vert_shader_list);
- free(frag_shader_list);
- free(geom_shader_list);
-
for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
+ free(shader_list[i]);
if (prog->_LinkedShaders[i] == NULL)
continue;
projects / mesa.git / blobdiff