Functions for vertex/fragment program transformations, optimizations, etc.
This commit is contained in:
Brian Paul
parent
beb32c4a59
commit
c6511ab950
|
|
@ -0,0 +1,146 @@
|
|||
/*
|
||||
* Mesa 3-D graphics library
|
||||
* Version: 6.5.1
|
||||
*
|
||||
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
|
||||
*
|
||||
* 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 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
|
||||
* BRIAN PAUL 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
* \file programopt.c
|
||||
* Vertex/Fragment program optimizations and transformations for program
|
||||
* options, etc.
|
||||
*
|
||||
* \author Brian Paul
|
||||
*/
|
||||
|
||||
|
||||
#include "glheader.h"
|
||||
#include "context.h"
|
||||
#include "imports.h"
|
||||
#include "mtypes.h"
|
||||
#include "program.h"
|
||||
#include "programopt.h"
|
||||
#include "program_instruction.h"
|
||||
|
||||
|
||||
/**
|
||||
* This is used for helping with position-invariant vertex programs.
|
||||
* It appends extra instructions to the given program to do the
|
||||
* vertex position transformation (multiply by the MVP matrix).
|
||||
*/
|
||||
void
|
||||
_mesa_append_modelview_code(GLcontext *ctx, struct gl_vertex_program *vprog)
|
||||
{
|
||||
struct prog_instruction newInst[5];
|
||||
const GLuint origLen = vprog->Base.NumInstructions;
|
||||
GLuint i;
|
||||
|
||||
/*
|
||||
* Setup state references for the modelview/projection matrix.
|
||||
* XXX we should check if these state vars are already declared.
|
||||
*/
|
||||
static const GLint mvpState[4][5] = {
|
||||
{ STATE_MATRIX, STATE_MVP, 0, 0, 0 }, /* state.matrix.mvp.row[0] */
|
||||
{ STATE_MATRIX, STATE_MVP, 0, 1, 1 }, /* state.matrix.mvp.row[1] */
|
||||
{ STATE_MATRIX, STATE_MVP, 0, 2, 2 }, /* state.matrix.mvp.row[2] */
|
||||
{ STATE_MATRIX, STATE_MVP, 0, 3, 3 }, /* state.matrix.mvp.row[3] */
|
||||
};
|
||||
GLint mvpRef[4];
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
mvpRef[i] = _mesa_add_state_reference(vprog->Base.Parameters,
|
||||
mvpState[i]);
|
||||
}
|
||||
|
||||
/*
|
||||
* Generated instructions:
|
||||
* newInst[0] = DP4 result.position.x, mvp.row[0], vertex.position;
|
||||
* newInst[1] = DP4 result.position.y, mvp.row[1], vertex.position;
|
||||
* newInst[2] = DP4 result.position.z, mvp.row[2], vertex.position;
|
||||
* newInst[3] = DP4 result.position.w, mvp.row[3], vertex.position;
|
||||
* newInst[4] = END;
|
||||
*/
|
||||
for (i = 0; i < 4; i++) {
|
||||
_mesa_init_instruction(newInst + i);
|
||||
newInst[i].Opcode = OPCODE_DP4;
|
||||
newInst[i].DstReg.File = PROGRAM_OUTPUT;
|
||||
newInst[i].DstReg.Index = VERT_RESULT_HPOS;
|
||||
newInst[i].DstReg.WriteMask = (WRITEMASK_X << i);
|
||||
newInst[i].SrcReg[0].File = PROGRAM_STATE_VAR;
|
||||
newInst[i].SrcReg[0].Index = mvpRef[i];
|
||||
newInst[i].SrcReg[0].Swizzle = SWIZZLE_NOOP;
|
||||
newInst[i].SrcReg[1].File = PROGRAM_INPUT;
|
||||
newInst[i].SrcReg[1].Index = VERT_ATTRIB_POS;
|
||||
newInst[i].SrcReg[1].Swizzle = SWIZZLE_NOOP;
|
||||
}
|
||||
newInst[4].Opcode = OPCODE_END;
|
||||
|
||||
/*
|
||||
* Append new instructions onto program.
|
||||
*/
|
||||
vprog->Base.Instructions
|
||||
= _mesa_realloc_instructions(vprog->Base.Instructions,
|
||||
origLen, origLen + 4);
|
||||
if (!vprog->Base.Instructions) {
|
||||
_mesa_error(ctx, GL_OUT_OF_MEMORY,
|
||||
"glProgramString(generating position transformation code)");
|
||||
return;
|
||||
}
|
||||
/* subtract one to overwrite original program's END instruction */
|
||||
_mesa_memcpy(vprog->Base.Instructions + origLen - 1,
|
||||
newInst, sizeof(newInst));
|
||||
|
||||
vprog->Base.NumInstructions = origLen + 4;
|
||||
vprog->Base.InputsRead |= VERT_BIT_POS;
|
||||
vprog->Base.OutputsWritten |= (1 << VERT_RESULT_HPOS);
|
||||
}
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Append extra instructions onto the given fragment program to implement
|
||||
* the fog mode specified by program->FogOption.
|
||||
* XXX incomplete.
|
||||
*/
|
||||
void
|
||||
_mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
|
||||
{
|
||||
struct prog_instruction newInst[10];
|
||||
|
||||
switch (fprog->FogOption) {
|
||||
case GL_LINEAR:
|
||||
/* lerp */
|
||||
break;
|
||||
case GL_EXP:
|
||||
break;
|
||||
case GL_EXP2:
|
||||
break;
|
||||
case GL_NONE:
|
||||
/* no-op */
|
||||
return;
|
||||
default:
|
||||
_mesa_problem(ctx, "Invalid fog option");
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
(void) newInst;
|
||||
|
||||
}
|
||||
|
|
@ -0,0 +1,37 @@
|
|||
/*
|
||||
* Mesa 3-D graphics library
|
||||
* Version: 6.5.1
|
||||
*
|
||||
* Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
|
||||
*
|
||||
* 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 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
|
||||
* BRIAN PAUL 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 PROGRAMOPT_H
|
||||
#define PROGRAMOPT_H 1
|
||||
|
||||
|
||||
extern void
|
||||
_mesa_append_modelview_code(GLcontext *ctx, struct gl_vertex_program *vprog);
|
||||
|
||||
extern void
|
||||
_mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog);
|
||||
|
||||
|
||||
#endif /* PROGRAMOPT_H */
|
||||
|
|
@ -160,6 +160,7 @@ SHADER_SOURCES = \
|
|||
shader/nvvertexec.c \
|
||||
shader/nvvertparse.c \
|
||||
shader/program.c \
|
||||
shader/programopt.c \
|
||||
shader/shaderobjects.c \
|
||||
shader/shaderobjects_3dlabs.c
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue