aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/glsl/ir_uniform.h
diff options
context:
space:
mode:
Diffstat (limited to 'mesalib/src/glsl/ir_uniform.h')
-rw-r--r--mesalib/src/glsl/ir_uniform.h128
1 files changed, 128 insertions, 0 deletions
diff --git a/mesalib/src/glsl/ir_uniform.h b/mesalib/src/glsl/ir_uniform.h
new file mode 100644
index 000000000..225da3fc5
--- /dev/null
+++ b/mesalib/src/glsl/ir_uniform.h
@@ -0,0 +1,128 @@
+/*
+ * 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_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 */