2 * Copyright (C) 2008 Nicolai Haehnle.
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #ifndef __RADEON_PROGRAM_H_
29 #define __RADEON_PROGRAM_H_
31 #include "main/glheader.h"
32 #include "main/macros.h"
33 #include "main/enums.h"
34 #include "shader/program.h"
35 #include "shader/prog_instruction.h"
45 PROGRAM_BUILTIN
= PROGRAM_FILE_MAX
/**< not a real register, but a special swizzle constant */
49 OPCODE_REPL_ALPHA
= MAX_OPCODE
/**< used in paired instructions */
52 #define SWIZZLE_0000 MAKE_SWIZZLE4(SWIZZLE_ZERO, SWIZZLE_ZERO, SWIZZLE_ZERO, SWIZZLE_ZERO)
53 #define SWIZZLE_1111 MAKE_SWIZZLE4(SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE, SWIZZLE_ONE)
56 * Transformation context that is passed to local transformations.
58 * Care must be taken with some operations during transformation,
59 * e.g. finding new temporary registers must use @ref radeonFindFreeTemporary
61 struct radeon_transform_context
{
63 struct gl_program
*Program
;
64 struct prog_instruction
*OldInstructions
;
65 GLuint OldNumInstructions
;
69 * A transformation that can be passed to \ref radeonLocalTransform.
71 * The function will be called once for each instruction.
72 * It has to either emit the appropriate transformed code for the instruction
73 * and return GL_TRUE, or return GL_FALSE if it doesn't understand the
76 * The function gets passed the userData as last parameter.
78 struct radeon_program_transformation
{
79 GLboolean (*function
)(
80 struct radeon_transform_context
*,
81 struct prog_instruction
*,
86 void radeonLocalTransform(
88 struct gl_program
*program
,
89 int num_transformations
,
90 struct radeon_program_transformation
* transformations
);
93 * Find a usable free temporary register during program transformation
95 GLint
radeonFindFreeTemporary(struct radeon_transform_context
*ctx
);
97 struct prog_instruction
*radeonAppendInstructions(struct gl_program
*program
, int count
);