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| -rw-r--r-- | src/glsl/ir_uniform.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/glsl/ir_uniform.h b/src/glsl/ir_uniform.h new file mode 100644 index 00000000000..f53388c5e4d --- /dev/null +++ b/src/glsl/ir_uniform.h @@ -0,0 +1,125 @@ +/* + * 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 + +#ifdef __cplusplus +extern "C" { +#endif + +/* 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. */ + +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_uniform_storage { + char *name; + 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; + + /** + * Base sampler index + * + * If \c ::base_type is \c GLSL_TYPE_SAMPLER, this represents the index of + * this sampler. If \c ::array_elements is not zero, the array will use + * sampler indexes \c ::sampler through \c ::sampler + \c ::array_elements + * - 1, inclusive. + */ + uint8_t sampler; + + /** + * 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; +}; + +#ifdef __cplusplus +} +#endif + +#endif /* IR_UNIFORM_H */ |