| /* |
| * Copyright © 2011 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 IR_UNIFORM_H |
| #define IR_UNIFORM_H |
| |
| |
| /* stdbool.h is necessary because this file is included in both C and C++ code. |
| */ |
| #include <stdbool.h> |
| |
| #include "program/prog_parameter.h" /* For union gl_constant_value. */ |
| |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| enum gl_uniform_driver_format { |
| uniform_native = 0, /**< Store data in the native format. */ |
| uniform_int_float, /**< Store integer data as floats. */ |
| uniform_bool_float, /**< Store boolean data as floats. */ |
| |
| /** |
| * Store boolean data as integer using 1 for \c true. |
| */ |
| uniform_bool_int_0_1, |
| |
| /** |
| * Store boolean data as integer using ~0 for \c true. |
| */ |
| uniform_bool_int_0_not0 |
| }; |
| |
| struct gl_uniform_driver_storage { |
| /** |
| * Number of bytes from one array element to the next. |
| */ |
| uint8_t element_stride; |
| |
| /** |
| * Number of bytes from one vector in a matrix to the next. |
| */ |
| uint8_t vector_stride; |
| |
| /** |
| * Base format of the stored data. |
| * |
| * This field must have a value from \c GLSL_TYPE_UINT through \c |
| * GLSL_TYPE_SAMPLER. |
| */ |
| uint8_t format; |
| |
| /** |
| * Pointer to the base of the data. |
| */ |
| void *data; |
| }; |
| |
| struct gl_opaque_uniform_index { |
| /** |
| * Base opaque uniform index |
| * |
| * If \c gl_uniform_storage::base_type is an opaque type, this |
| * represents its uniform index. If \c |
| * gl_uniform_storage::array_elements is not zero, the array will |
| * use opaque uniform indices \c index through \c index + \c |
| * gl_uniform_storage::array_elements - 1, inclusive. |
| * |
| * Note that the index may be different in each shader stage. |
| */ |
| uint8_t index; |
| |
| /** |
| * Whether this opaque uniform is used in this shader stage. |
| */ |
| bool active; |
| }; |
| |
| struct gl_uniform_storage { |
| char *name; |
| /** Type of this uniform data stored. |
| * |
| * In the case of an array, it's the type of a single array element. |
| */ |
| const struct glsl_type *type; |
| |
| /** |
| * The number of elements in this uniform. |
| * |
| * For non-arrays, this is always 0. For arrays, the value is the size of |
| * the array. |
| */ |
| unsigned array_elements; |
| |
| /** |
| * Has this uniform ever been set? |
| */ |
| bool initialized; |
| |
| struct gl_opaque_uniform_index sampler[MESA_SHADER_STAGES]; |
| |
| struct gl_opaque_uniform_index image[MESA_SHADER_STAGES]; |
| |
| /** |
| * Storage used by the driver for the uniform |
| */ |
| unsigned num_driver_storage; |
| struct gl_uniform_driver_storage *driver_storage; |
| |
| /** |
| * Storage used by Mesa for the uniform |
| * |
| * This form of the uniform is used by Mesa's implementation of \c |
| * glGetUniform. It can also be used by drivers to obtain the value of the |
| * uniform if the \c ::driver_storage interface is not used. |
| */ |
| union gl_constant_value *storage; |
| |
| /** Fields for GL_ARB_uniform_buffer_object |
| * @{ |
| */ |
| |
| /** |
| * GL_UNIFORM_BLOCK_INDEX: index of the uniform block containing |
| * the uniform, or -1 for the default uniform block. Note that the |
| * index is into the linked program's UniformBlocks[] array, not |
| * the linked shader's. |
| */ |
| int block_index; |
| |
| /** GL_UNIFORM_OFFSET: byte offset within the uniform block, or -1. */ |
| int offset; |
| |
| /** |
| * GL_UNIFORM_MATRIX_STRIDE: byte stride between columns or rows of |
| * a matrix. Set to 0 for non-matrices in UBOs, or -1 for uniforms |
| * in the default uniform block. |
| */ |
| int matrix_stride; |
| |
| /** |
| * GL_UNIFORM_ARRAY_STRIDE: byte stride between elements of the |
| * array. Set to zero for non-arrays in UBOs, or -1 for uniforms |
| * in the default uniform block. |
| */ |
| int array_stride; |
| |
| /** GL_UNIFORM_ROW_MAJOR: true iff it's a row-major matrix in a UBO */ |
| bool row_major; |
| |
| /** @} */ |
| |
| /** |
| * Index within gl_shader_program::AtomicBuffers[] of the atomic |
| * counter buffer this uniform is stored in, or -1 if this is not |
| * an atomic counter. |
| */ |
| int atomic_buffer_index; |
| |
| /** |
| * The 'base location' for this uniform in the uniform remap table. For |
| * arrays this is the first element in the array. |
| */ |
| unsigned remap_location; |
| }; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* IR_UNIFORM_H */ |