draw/gs: make sure geometry shaders don't overflow

[mesa.git] / src / glsl / link_uniforms.cpp

diff --git a/src/glsl/link_uniforms.cpp b/src/glsl/link_uniforms.cpp
index 531efa4a39fe5b52086e8aaeca5c40d8540b57a9..d457e4d0cd939924af6e61de218b74874192902c 100644 (file)
--- a/src/glsl/link_uniforms.cpp
+++ b/src/glsl/link_uniforms.cpp
@@ -52,7 +52,7 @@ values_for_type(const glsl_type *type)
 }
 
 void
-uniform_field_visitor::process(const glsl_type *type, const char *name)
+program_resource_visitor::process(const glsl_type *type, const char *name)
 {
    assert(type->is_record()
           || (type->is_array() && type->fields.array->is_record())
@@ -65,7 +65,7 @@ uniform_field_visitor::process(const glsl_type *type, const char *name)
 }
 
 void
-uniform_field_visitor::process(ir_variable *var)
+program_resource_visitor::process(ir_variable *var)
 {
    const glsl_type *t = var->type;
 
@@ -93,8 +93,8 @@ uniform_field_visitor::process(ir_variable *var)
 }
 
 void
-uniform_field_visitor::recursion(const glsl_type *t, char **name,
-                                 size_t name_length, bool row_major)
+program_resource_visitor::recursion(const glsl_type *t, char **name,
+                                    size_t name_length, bool row_major)
 {
    /* Records need to have each field processed individually.
     *
@@ -110,7 +110,7 @@ uniform_field_visitor::recursion(const glsl_type *t, char **name,
          if (t->fields.structure[i].type->is_record())
             this->visit_field(&t->fields.structure[i]);
 
-         /* Append '.field' to the current uniform name. */
+         /* Append '.field' to the current variable name. */
          if (name_length == 0) {
             ralloc_asprintf_rewrite_tail(name, &new_length, "%s", field);
          } else {
@@ -125,7 +125,7 @@ uniform_field_visitor::recursion(const glsl_type *t, char **name,
       for (unsigned i = 0; i < t->length; i++) {
         size_t new_length = name_length;
 
-        /* Append the subscript to the current uniform name */
+        /* Append the subscript to the current variable name */
         ralloc_asprintf_rewrite_tail(name, &new_length, "[%u]", i);
 
          recursion(t->fields.array, name, new_length,
@@ -137,7 +137,7 @@ uniform_field_visitor::recursion(const glsl_type *t, char **name,
 }
 
 void
-uniform_field_visitor::visit_field(const glsl_struct_field *field)
+program_resource_visitor::visit_field(const glsl_struct_field *field)
 {
    (void) field;
    /* empty */
@@ -153,7 +153,7 @@ uniform_field_visitor::visit_field(const glsl_struct_field *field)
  * If the same uniform is added multiple times (i.e., once for each shader
  * target), it will only be accounted once.
  */
-class count_uniform_size : public uniform_field_visitor {
+class count_uniform_size : public program_resource_visitor {
 public:
    count_uniform_size(struct string_to_uint_map *map)
       : num_active_uniforms(0), num_values(0), num_shader_samplers(0),
@@ -171,10 +171,10 @@ public:
    void process(ir_variable *var)
    {
       if (var->is_interface_instance())
-         uniform_field_visitor::process(var->interface_type,
-                                        var->interface_type->name);
+         program_resource_visitor::process(var->interface_type,
+                                           var->interface_type->name);
       else
-         uniform_field_visitor::process(var);
+         program_resource_visitor::process(var);
    }
 
    /**
@@ -258,7 +258,7 @@ private:
  * the \c gl_uniform_storage and \c gl_constant_value arrays are "big
  * enough."
  */
-class parcel_out_uniform_storage : public uniform_field_visitor {
+class parcel_out_uniform_storage : public program_resource_visitor {
 public:
    parcel_out_uniform_storage(struct string_to_uint_map *map,
                              struct gl_uniform_storage *uniforms,
@@ -510,7 +510,13 @@ link_cross_validate_uniform_block(void *mem_ctx,
       struct gl_uniform_buffer_variable *ubo_var =
         &linked_block->Uniforms[i];
 
-      ubo_var->Name = ralloc_strdup(*linked_blocks, ubo_var->Name);
+      if (ubo_var->Name == ubo_var->IndexName) {
+         ubo_var->Name = ralloc_strdup(*linked_blocks, ubo_var->Name);
+         ubo_var->IndexName = ubo_var->Name;
+      } else {
+         ubo_var->Name = ralloc_strdup(*linked_blocks, ubo_var->Name);
+         ubo_var->IndexName = ralloc_strdup(*linked_blocks, ubo_var->IndexName);
+      }
    }
 
    return linked_block_index;
@@ -533,12 +539,42 @@ link_update_uniform_buffer_variables(struct gl_shader *shader)
 
       assert(var->mode == ir_var_uniform);
 
+      if (var->is_interface_instance()) {
+         var->location = 0;
+         continue;
+      }
+
       bool found = false;
+      char sentinel = '\0';
+
+      if (var->type->is_record()) {
+         sentinel = '.';
+      } else if (var->type->is_array()
+                 && var->type->fields.array->is_record()) {
+         sentinel = '[';
+      }
+
+      const unsigned l = strlen(var->name);
       for (unsigned i = 0; i < shader->NumUniformBlocks; i++) {
         for (unsigned j = 0; j < shader->UniformBlocks[i].NumUniforms; j++) {
-           if (!strcmp(var->name, shader->UniformBlocks[i].Uniforms[j].Name)) {
+            if (sentinel) {
+               const char *begin = shader->UniformBlocks[i].Uniforms[j].Name;
+               const char *end = strchr(begin, sentinel);
+
+               if (end == NULL)
+                  continue;
+
+               if (l != (end - begin))
+                  continue;
+
+               if (strncmp(var->name, begin, l) == 0) {
+                  found = true;
+                  var->location = j;
+                  break;
+               }
+            } else if (!strcmp(var->name,
+                               shader->UniformBlocks[i].Uniforms[j].Name)) {
               found = true;
-              var->uniform_block = i;
               var->location = j;
               break;
            }
@@ -608,13 +644,6 @@ link_assign_uniform_locations(struct gl_shader_program *prog)
     */
    memset(prog->SamplerUnits, 0, sizeof(prog->SamplerUnits));
 
-   for (unsigned i = 0; i < MESA_SHADER_TYPES; i++) {
-      if (prog->_LinkedShaders[i] == NULL)
-        continue;
-
-      link_update_uniform_buffer_variables(prog->_LinkedShaders[i]);
-   }
-
    /* First pass: Count the uniform resources used by the user-defined
     * uniforms.  While this happens, each active uniform will have an index
     * assigned to it.
@@ -627,6 +656,8 @@ link_assign_uniform_locations(struct gl_shader_program *prog)
       if (prog->_LinkedShaders[i] == NULL)
         continue;
 
+      link_update_uniform_buffer_variables(prog->_LinkedShaders[i]);
+
       /* Reset various per-shader target counts.
        */
       uniform_size.start_shader();