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/* -*- c++ -*- */
/*
* Copyright © 2010 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#pragma once
#ifndef GLSL_LINKER_H
#define GLSL_LINKER_H
extern bool
link_function_calls(gl_shader_program *prog, gl_shader *main,
gl_shader **shader_list, unsigned num_shaders);
extern void
link_invalidate_variable_locations(gl_shader *sh, enum ir_variable_mode mode,
int generic_base);
extern void
link_assign_uniform_locations(struct gl_shader_program *prog);
extern void
link_set_uniform_initializers(struct gl_shader_program *prog);
extern int
link_cross_validate_uniform_block(void *mem_ctx,
struct gl_uniform_block **linked_blocks,
unsigned int *num_linked_blocks,
struct gl_uniform_block *new_block);
void
link_assign_uniform_block_offsets(struct gl_shader *shader);
extern bool
link_uniform_blocks_are_compatible(const gl_uniform_block *a,
const gl_uniform_block *b);
extern int
link_uniform_blocks(void *mem_ctx,
struct gl_shader_program *prog,
struct gl_shader **shader_list,
unsigned num_shaders,
struct gl_uniform_block **blocks_ret);
/**
* Class for processing all of the leaf fields of an uniform
*
* Leaves are, roughly speaking, the parts of the uniform that the application
* could query with \c glGetUniformLocation (or that could be returned by
* \c glGetActiveUniforms).
*
* Classes my derive from this class to implement specific functionality.
* This class only provides the mechanism to iterate over the leaves. Derived
* classes must implement \c ::visit_field and may override \c ::process.
*/
class uniform_field_visitor {
public:
/**
* Begin processing a uniform
*
* Classes that overload this function should call \c ::process from the
* base class to start the recursive processing of the uniform.
*
* \param var The uniform variable that is to be processed
*
* Calls \c ::visit_field for each leaf of the uniform.
*
* \warning
* This entry should only be used with uniform blocks in cases where the
* row / column ordering of matrices in the block does not matter. For
* example, enumerating the names of members of the block, but not for
* determining the offsets of members.
*/
void process(ir_variable *var);
/**
* Begin processing a uniform of a structured type.
*
* This flavor of \c process should be used to handle structured types
* (i.e., structures, interfaces, or arrays there of) that need special
* name handling. A common usage is to handle cases where the block name
* (instead of the instance name) is used for an interface block.
*
* \param type Type that is to be processed, associated with \c name
* \param name Base name of the structured uniform being processed
*
* \note
* \c type must be \c GLSL_TYPE_RECORD, \c GLSL_TYPE_INTERFACE, or an array
* there of.
*/
void process(const glsl_type *type, const char *name);
protected:
/**
* Method invoked for each leaf of the uniform
*
* \param type Type of the field.
* \param name Fully qualified name of the field.
* \param row_major For a matrix type, is it stored row-major.
*/
virtual void visit_field(const glsl_type *type, const char *name,
bool row_major) = 0;
/**
* Visit a record before visiting its fields
*
* For structures-of-structures or interfaces-of-structures, this visits
* the inner structure before visiting its fields.
*
* The default implementation does nothing.
*/
virtual void visit_field(const glsl_struct_field *field);
private:
/**
* \param name_length Length of the current name \b not including the
* terminating \c NUL character.
*/
void recursion(const glsl_type *t, char **name, size_t name_length,
bool row_major);
};
void
linker_error(gl_shader_program *prog, const char *fmt, ...);
void
linker_warning(gl_shader_program *prog, const char *fmt, ...);
unsigned
count_attribute_slots(const glsl_type *t);
#endif /* GLSL_LINKER_H */
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