| /* |
| * Copyright © 2018 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. |
| */ |
| |
| #ifndef GLSL_LINKER_UTIL_H |
| #define GLSL_LINKER_UTIL_H |
| |
| #include "util/bitset.h" |
| #include "util/glheader.h" |
| #include "compiler/glsl/list.h" |
| #include "compiler/glsl_types.h" |
| #include "main/mtypes.h" |
| #include "main/shader_types.h" |
| |
| struct gl_constants; |
| struct gl_shader_program; |
| struct gl_uniform_storage; |
| struct set; |
| |
| /** |
| * Built-in / reserved GL variables names start with "gl_" |
| */ |
| static inline bool |
| is_gl_identifier(const char *s) |
| { |
| return s && s[0] == 'g' && s[1] == 'l' && s[2] == '_'; |
| } |
| |
| static inline GLenum |
| glsl_get_gl_type(const struct glsl_type *t) |
| { |
| return t->gl_type; |
| } |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** |
| * Sometimes there are empty slots left over in UniformRemapTable after we |
| * allocate slots to explicit locations. This struct represents a single |
| * continouous block of empty slots in UniformRemapTable. |
| */ |
| struct empty_uniform_block { |
| struct exec_node link; |
| /* The start location of the block */ |
| unsigned start; |
| /* The number of slots in the block */ |
| unsigned slots; |
| }; |
| |
| /** |
| * Describes an access of an array element or an access of the whole array |
| */ |
| struct array_deref_range { |
| /** |
| * Index that was accessed. |
| * |
| * All valid array indices are less than the size of the array. If index |
| * is equal to the size of the array, this means the entire array has been |
| * accessed (e.g., due to use of a non-constant index). |
| */ |
| unsigned index; |
| |
| /** Size of the array. Used for offset calculations. */ |
| unsigned size; |
| }; |
| |
| void |
| link_shaders_init(struct gl_context *ctx, struct gl_shader_program *prog); |
| |
| void |
| linker_error(struct gl_shader_program *prog, const char *fmt, ...); |
| |
| void |
| linker_warning(struct gl_shader_program *prog, const char *fmt, ...); |
| |
| long |
| link_util_parse_program_resource_name(const GLchar *name, const size_t len, |
| const GLchar **out_base_name_end); |
| |
| bool |
| link_util_should_add_buffer_variable(struct gl_shader_program *prog, |
| struct gl_uniform_storage *uniform, |
| int top_level_array_base_offset, |
| int top_level_array_size_in_bytes, |
| int second_element_offset, |
| int block_index); |
| |
| bool |
| link_util_add_program_resource(struct gl_shader_program *prog, |
| struct set *resource_set, |
| GLenum type, const void *data, uint8_t stages); |
| |
| int |
| link_util_find_empty_block(struct gl_shader_program *prog, |
| struct gl_uniform_storage *uniform); |
| |
| void |
| link_util_update_empty_uniform_locations(struct gl_shader_program *prog); |
| |
| void |
| link_util_check_subroutine_resources(struct gl_shader_program *prog); |
| |
| void |
| link_util_check_uniform_resources(const struct gl_constants *consts, |
| struct gl_shader_program *prog); |
| |
| void |
| link_util_calculate_subroutine_compat(struct gl_shader_program *prog); |
| |
| void |
| link_util_mark_array_elements_referenced(const struct array_deref_range *dr, |
| unsigned count, unsigned array_depth, |
| BITSET_WORD *bits); |
| |
| void |
| resource_name_updated(struct gl_resource_name *name); |
| |
| /** |
| * Get the string value for an interpolation qualifier |
| * |
| * \return The string that would be used in a shader to specify \c |
| * mode will be returned. |
| * |
| * This function is used to generate error messages of the form "shader |
| * uses %s interpolation qualifier", so in the case where there is no |
| * interpolation qualifier, it returns "no". |
| * |
| * This function should only be used on a shader input or output variable. |
| */ |
| const char *interpolation_string(unsigned interpolation); |
| |
| /** |
| * \brief Can \c from be implicitly converted to \c desired |
| * |
| * \return True if the types are identical or if \c from type can be converted |
| * to \c desired according to Section 4.1.10 of the GLSL spec. |
| * |
| * \verbatim |
| * From page 25 (31 of the pdf) of the GLSL 1.50 spec, Section 4.1.10 |
| * Implicit Conversions: |
| * |
| * In some situations, an expression and its type will be implicitly |
| * converted to a different type. The following table shows all allowed |
| * implicit conversions: |
| * |
| * Type of expression | Can be implicitly converted to |
| * -------------------------------------------------- |
| * int float |
| * uint |
| * |
| * ivec2 vec2 |
| * uvec2 |
| * |
| * ivec3 vec3 |
| * uvec3 |
| * |
| * ivec4 vec4 |
| * uvec4 |
| * |
| * There are no implicit array or structure conversions. For example, |
| * an array of int cannot be implicitly converted to an array of float. |
| * There are no implicit conversions between signed and unsigned |
| * integers. |
| * \endverbatim |
| */ |
| extern bool _mesa_glsl_can_implicitly_convert(const glsl_type *from, const glsl_type *desired, |
| bool has_implicit_conversions, |
| bool has_implicit_int_to_uint_conversion); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* GLSL_LINKER_UTIL_H */ |