709 lines
21 KiB
C
709 lines
21 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 6.5.3
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*
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* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file prog_parameter.c
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* Program parameter lists and functions.
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* \author Brian Paul
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*/
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#include "glheader.h"
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#include "imports.h"
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#include "macros.h"
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#include "prog_instruction.h"
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#include "prog_parameter.h"
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#include "prog_statevars.h"
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struct gl_program_parameter_list *
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_mesa_new_parameter_list(void)
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{
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return CALLOC_STRUCT(gl_program_parameter_list);
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}
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/**
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* Free a parameter list and all its parameters
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*/
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void
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_mesa_free_parameter_list(struct gl_program_parameter_list *paramList)
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{
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GLuint i;
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for (i = 0; i < paramList->NumParameters; i++) {
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if (paramList->Parameters[i].Name)
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_mesa_free((void *) paramList->Parameters[i].Name);
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}
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_mesa_free(paramList->Parameters);
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if (paramList->ParameterValues)
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_mesa_align_free(paramList->ParameterValues);
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_mesa_free(paramList);
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}
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static GLint
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_mesa_fit_type_in_vec4(GLenum type)
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{
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switch (type) {
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case GL_FLOAT:
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case GL_INT:
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return 4;
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break;
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case GL_FLOAT_VEC2:
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case GL_INT_VEC2:
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return 2;
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break;
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case GL_FLOAT_VEC3:
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case GL_INT_VEC3:
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return 1;
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break;
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case GL_FLOAT_VEC4:
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case GL_INT_VEC4:
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default:
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return 1;
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}
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}
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/**
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* Add a new parameter to a parameter list.
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* Note that parameter values are usually 4-element GLfloat vectors.
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* When size > 4 we'll allocate a sequential block of parameters to
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* store all the values (in blocks of 4).
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*
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* \param paramList the list to add the parameter to
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* \param type type of parameter, such as
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* \param name the parameter name, will be duplicated/copied!
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* \param size number of elements in 'values' vector (1..4, or more)
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* \param values initial parameter value, up to 4 GLfloats, or NULL
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* \param state state indexes, or NULL
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* \return index of new parameter in the list, or -1 if error (out of mem)
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*/
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GLint
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_mesa_add_parameter(struct gl_program_parameter_list *paramList,
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enum register_file type, const char *name,
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GLuint size, GLenum datatype, const GLfloat *values,
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const gl_state_index state[STATE_LENGTH])
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{
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const GLuint oldNum = paramList->NumParameters;
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const GLuint sz4 = (size + 3) / 4; /* no. of new param slots needed */
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assert(size > 0);
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if (oldNum + sz4 > paramList->Size) {
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/* Need to grow the parameter list array (alloc some extra) */
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paramList->Size = paramList->Size + 4 * sz4;
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/* realloc arrays */
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paramList->Parameters = (struct gl_program_parameter *)
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_mesa_realloc(paramList->Parameters,
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oldNum * sizeof(struct gl_program_parameter),
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paramList->Size * sizeof(struct gl_program_parameter));
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paramList->ParameterValues = (GLfloat (*)[4])
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_mesa_align_realloc(paramList->ParameterValues, /* old buf */
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oldNum * 4 * sizeof(GLfloat), /* old size */
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paramList->Size * 4 *sizeof(GLfloat), /* new sz */
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16);
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}
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if (!paramList->Parameters ||
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!paramList->ParameterValues) {
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/* out of memory */
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paramList->NumParameters = 0;
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paramList->Size = 0;
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return -1;
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}
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else {
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GLuint i;
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paramList->NumParameters = oldNum + sz4;
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_mesa_memset(¶mList->Parameters[oldNum], 0,
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sz4 * sizeof(struct gl_program_parameter));
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for (i = 0; i < sz4; i++) {
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struct gl_program_parameter *p = paramList->Parameters + oldNum + i;
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p->Name = name ? _mesa_strdup(name) : NULL;
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p->Type = type;
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p->Size = size;
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p->DataType = datatype;
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if (values) {
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COPY_4V(paramList->ParameterValues[oldNum + i], values);
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values += 4;
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}
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else {
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/* silence valgrind */
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ASSIGN_4V(paramList->ParameterValues[oldNum + i], 0, 0, 0, 0);
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}
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size -= 4;
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}
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if (state) {
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for (i = 0; i < STATE_LENGTH; i++)
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paramList->Parameters[oldNum].StateIndexes[i] = state[i];
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}
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return (GLint) oldNum;
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}
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}
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/**
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* Add a new named program parameter (Ex: NV_fragment_program DEFINE statement)
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* \return index of the new entry in the parameter list
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*/
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GLint
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_mesa_add_named_parameter(struct gl_program_parameter_list *paramList,
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const char *name, const GLfloat values[4])
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{
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return _mesa_add_parameter(paramList, PROGRAM_NAMED_PARAM, name,
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4, GL_NONE, values, NULL);
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}
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/**
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* Add a new named constant to the parameter list.
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* This will be used when the program contains something like this:
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* PARAM myVals = { 0, 1, 2, 3 };
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*
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* \param paramList the parameter list
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* \param name the name for the constant
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* \param values four float values
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* \return index/position of the new parameter in the parameter list
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*/
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GLint
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_mesa_add_named_constant(struct gl_program_parameter_list *paramList,
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const char *name, const GLfloat values[4],
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GLuint size)
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{
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#if 0 /* disable this for now -- we need to save the name! */
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GLint pos;
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GLuint swizzle;
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ASSERT(size == 4); /* XXX future feature */
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/* check if we already have this constant */
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if (_mesa_lookup_parameter_constant(paramList, values, 4, &pos, &swizzle)) {
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return pos;
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}
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#endif
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size = 4; /** XXX fix */
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return _mesa_add_parameter(paramList, PROGRAM_CONSTANT, name,
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size, GL_NONE, values, NULL);
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}
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/**
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* Add a new unnamed constant to the parameter list. This will be used
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* when a fragment/vertex program contains something like this:
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* MOV r, { 0, 1, 2, 3 };
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* We'll search the parameter list for an existing instance of the
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* constant. If swizzleOut is non-null, we'll try swizzling when
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* looking for a match.
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*
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* \param paramList the parameter list
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* \param values four float values
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* \param swizzleOut returns swizzle mask for accessing the constant
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* \return index/position of the new parameter in the parameter list.
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*/
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GLint
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_mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList,
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const GLfloat values[4], GLuint size,
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GLuint *swizzleOut)
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{
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GLint pos;
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ASSERT(size >= 1);
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ASSERT(size <= 4);
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if (_mesa_lookup_parameter_constant(paramList, values,
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size, &pos, swizzleOut)) {
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return pos;
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}
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/* Look for empty space in an already unnamed constant parameter
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* to add this constant. This will only work for single-element
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* constants because we rely on smearing (i.e. .yyyy or .zzzz).
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*/
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if (size == 1 && swizzleOut) {
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for (pos = 0; pos < (GLint) paramList->NumParameters; pos++) {
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struct gl_program_parameter *p = paramList->Parameters + pos;
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if (p->Type == PROGRAM_CONSTANT && p->Size + size <= 4) {
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/* ok, found room */
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GLfloat *pVal = paramList->ParameterValues[pos];
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GLuint swz = p->Size; /* 1, 2 or 3 for Y, Z, W */
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pVal[p->Size] = values[0];
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p->Size++;
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*swizzleOut = MAKE_SWIZZLE4(swz, swz, swz, swz);
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return pos;
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}
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}
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}
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/* add a new parameter to store this constant */
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pos = _mesa_add_parameter(paramList, PROGRAM_CONSTANT, NULL,
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size, GL_NONE, values, NULL);
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if (pos >= 0 && swizzleOut) {
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if (size == 1)
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*swizzleOut = SWIZZLE_XXXX;
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else
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*swizzleOut = SWIZZLE_NOOP;
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}
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return pos;
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}
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/**
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* Add a uniform to the parameter list.
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* Note that if the uniform is an array, size may be greater than
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* what's implied by the datatype.
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* \param name uniform's name
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* \param size number of floats to allocate
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* \param datatype GL_FLOAT_VEC3, GL_FLOAT_MAT4, etc.
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*/
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GLint
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_mesa_add_uniform(struct gl_program_parameter_list *paramList,
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const char *name, GLuint size, GLenum datatype)
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{
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GLint i = _mesa_lookup_parameter_index(paramList, -1, name);
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ASSERT(datatype != GL_NONE);
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if (i >= 0 && paramList->Parameters[i].Type == PROGRAM_UNIFORM) {
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ASSERT(paramList->Parameters[i].Size == size);
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ASSERT(paramList->Parameters[i].DataType == datatype);
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/* already in list */
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return i;
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}
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else {
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i = _mesa_add_parameter(paramList, PROGRAM_UNIFORM, name,
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size * _mesa_fit_type_in_vec4(datatype), datatype, NULL, NULL);
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return i;
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}
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}
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/**
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* Add a sampler to the parameter list.
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* \param name uniform's name
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* \param datatype GL_SAMPLER_2D, GL_SAMPLER_2D_RECT_ARB, etc.
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* \param index the sampler number (as seen in TEX instructions)
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* \return sampler index (starting at zero) or -1 if error
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*/
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GLint
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_mesa_add_sampler(struct gl_program_parameter_list *paramList,
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const char *name, GLenum datatype)
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{
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GLint i = _mesa_lookup_parameter_index(paramList, -1, name);
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if (i >= 0 && paramList->Parameters[i].Type == PROGRAM_SAMPLER) {
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ASSERT(paramList->Parameters[i].Size == 1);
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ASSERT(paramList->Parameters[i].DataType == datatype);
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/* already in list */
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return (GLint) paramList->ParameterValues[i][0];
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}
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else {
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const GLint size = 1; /* a sampler is basically a texture unit number */
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GLfloat value;
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GLint numSamplers = 0;
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for (i = 0; i < paramList->NumParameters; i++) {
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if (paramList->Parameters[i].Type == PROGRAM_SAMPLER)
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numSamplers++;
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}
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value = (GLfloat) numSamplers;
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(void) _mesa_add_parameter(paramList, PROGRAM_SAMPLER, name,
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size, datatype, &value, NULL);
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return numSamplers;
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}
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}
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/**
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* Add parameter representing a varying variable.
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*/
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GLint
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_mesa_add_varying(struct gl_program_parameter_list *paramList,
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const char *name, GLuint size)
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{
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GLint i = _mesa_lookup_parameter_index(paramList, -1, name);
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if (i >= 0 && paramList->Parameters[i].Type == PROGRAM_VARYING) {
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/* already in list */
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return i;
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}
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else {
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assert(size == 4);
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i = _mesa_add_parameter(paramList, PROGRAM_VARYING, name,
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size, GL_NONE, NULL, NULL);
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return i;
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}
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}
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/**
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* Add parameter representing a vertex program attribute.
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* \param size size of attribute (in floats), may be -1 if unknown
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* \param attrib the attribute index, or -1 if unknown
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*/
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GLint
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_mesa_add_attribute(struct gl_program_parameter_list *paramList,
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const char *name, GLint size, GLint attrib)
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{
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GLint i = _mesa_lookup_parameter_index(paramList, -1, name);
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if (i >= 0) {
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/* replace */
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if (attrib < 0)
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attrib = i;
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paramList->Parameters[i].StateIndexes[0] = attrib;
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}
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else {
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/* add */
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gl_state_index state[STATE_LENGTH];
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state[0] = (gl_state_index) attrib;
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if (size < 0)
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size = 4;
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i = _mesa_add_parameter(paramList, PROGRAM_INPUT, name,
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size, GL_NONE, NULL, state);
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}
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return i;
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}
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#if 0 /* not used yet */
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/**
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* Returns the number of 4-component registers needed to store a piece
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* of GL state. For matrices this may be as many as 4 registers,
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* everything else needs
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* just 1 register.
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*/
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static GLuint
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sizeof_state_reference(const GLint *stateTokens)
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{
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if (stateTokens[0] == STATE_MATRIX) {
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GLuint rows = stateTokens[4] - stateTokens[3] + 1;
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assert(rows >= 1);
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assert(rows <= 4);
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return rows;
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}
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else {
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return 1;
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}
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}
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#endif
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/**
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* Add a new state reference to the parameter list.
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* This will be used when the program contains something like this:
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* PARAM ambient = state.material.front.ambient;
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*
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* \param paramList the parameter list
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* \param stateTokens an array of 5 (STATE_LENGTH) state tokens
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* \return index of the new parameter.
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*/
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GLint
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_mesa_add_state_reference(struct gl_program_parameter_list *paramList,
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const gl_state_index stateTokens[STATE_LENGTH])
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{
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const GLuint size = 4; /* XXX fix */
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const char *name;
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GLint index;
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/* Check if the state reference is already in the list */
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for (index = 0; index < (GLint) paramList->NumParameters; index++) {
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GLuint i, match = 0;
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for (i = 0; i < STATE_LENGTH; i++) {
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if (paramList->Parameters[index].StateIndexes[i] == stateTokens[i]) {
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match++;
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}
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else {
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break;
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}
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}
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if (match == STATE_LENGTH) {
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/* this state reference is already in the parameter list */
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return index;
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}
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}
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name = _mesa_program_state_string(stateTokens);
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index = _mesa_add_parameter(paramList, PROGRAM_STATE_VAR, name,
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size, GL_NONE,
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NULL, (gl_state_index *) stateTokens);
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paramList->StateFlags |= _mesa_program_state_flags(stateTokens);
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/* free name string here since we duplicated it in add_parameter() */
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_mesa_free((void *) name);
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return index;
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}
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/**
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* Lookup a parameter value by name in the given parameter list.
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* \return pointer to the float[4] values.
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*/
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GLfloat *
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_mesa_lookup_parameter_value(const struct gl_program_parameter_list *paramList,
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GLsizei nameLen, const char *name)
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{
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GLuint i = _mesa_lookup_parameter_index(paramList, nameLen, name);
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if (i < 0)
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return NULL;
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else
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return paramList->ParameterValues[i];
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}
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/**
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* Given a program parameter name, find its position in the list of parameters.
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* \param paramList the parameter list to search
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* \param nameLen length of name (in chars).
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* If length is negative, assume that name is null-terminated.
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* \param name the name to search for
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* \return index of parameter in the list.
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*/
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GLint
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_mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList,
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GLsizei nameLen, const char *name)
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{
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GLint i;
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if (!paramList)
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return -1;
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if (nameLen == -1) {
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/* name is null-terminated */
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for (i = 0; i < (GLint) paramList->NumParameters; i++) {
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if (paramList->Parameters[i].Name &&
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_mesa_strcmp(paramList->Parameters[i].Name, name) == 0)
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return i;
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}
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}
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else {
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/* name is not null-terminated, use nameLen */
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for (i = 0; i < (GLint) paramList->NumParameters; i++) {
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if (paramList->Parameters[i].Name &&
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_mesa_strncmp(paramList->Parameters[i].Name, name, nameLen) == 0
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&& _mesa_strlen(paramList->Parameters[i].Name) == (size_t)nameLen)
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return i;
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}
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}
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return -1;
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}
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/**
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* Look for a float vector in the given parameter list. The float vector
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* may be of length 1, 2, 3 or 4. If swizzleOut is non-null, we'll try
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* swizzling to find a match.
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* \param list the parameter list to search
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* \param v the float vector to search for
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* \param size number of element in v
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* \param posOut returns the position of the constant, if found
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* \param swizzleOut returns a swizzle mask describing location of the
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* vector elements if found.
|
|
* \return GL_TRUE if found, GL_FALSE if not found
|
|
*/
|
|
GLboolean
|
|
_mesa_lookup_parameter_constant(const struct gl_program_parameter_list *list,
|
|
const GLfloat v[], GLuint vSize,
|
|
GLint *posOut, GLuint *swizzleOut)
|
|
{
|
|
GLuint i;
|
|
|
|
assert(vSize >= 1);
|
|
assert(vSize <= 4);
|
|
|
|
if (!list)
|
|
return -1;
|
|
|
|
for (i = 0; i < list->NumParameters; i++) {
|
|
if (list->Parameters[i].Type == PROGRAM_CONSTANT) {
|
|
if (!swizzleOut) {
|
|
/* swizzle not allowed */
|
|
GLuint j, match = 0;
|
|
for (j = 0; j < vSize; j++) {
|
|
if (v[j] == list->ParameterValues[i][j])
|
|
match++;
|
|
}
|
|
if (match == vSize) {
|
|
*posOut = i;
|
|
return GL_TRUE;
|
|
}
|
|
}
|
|
else {
|
|
/* try matching w/ swizzle */
|
|
if (vSize == 1) {
|
|
/* look for v[0] anywhere within float[4] value */
|
|
GLuint j;
|
|
for (j = 0; j < 4; j++) {
|
|
if (list->ParameterValues[i][j] == v[0]) {
|
|
/* found it */
|
|
*posOut = i;
|
|
*swizzleOut = MAKE_SWIZZLE4(j, j, j, j);
|
|
return GL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
else if (vSize <= list->Parameters[i].Size) {
|
|
/* see if we can match this constant (with a swizzle) */
|
|
GLuint swz[4];
|
|
GLuint match = 0, j, k;
|
|
for (j = 0; j < vSize; j++) {
|
|
if (v[j] == list->ParameterValues[i][j]) {
|
|
swz[j] = j;
|
|
match++;
|
|
}
|
|
else {
|
|
for (k = 0; k < list->Parameters[i].Size; k++) {
|
|
if (v[j] == list->ParameterValues[i][k]) {
|
|
swz[j] = k;
|
|
match++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/* smear last value to remaining positions */
|
|
for (; j < 4; j++)
|
|
swz[j] = swz[j-1];
|
|
|
|
if (match == vSize) {
|
|
*posOut = i;
|
|
*swizzleOut = MAKE_SWIZZLE4(swz[0], swz[1], swz[2], swz[3]);
|
|
return GL_TRUE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
*posOut = -1;
|
|
return GL_FALSE;
|
|
}
|
|
|
|
|
|
struct gl_program_parameter_list *
|
|
_mesa_clone_parameter_list(const struct gl_program_parameter_list *list)
|
|
{
|
|
struct gl_program_parameter_list *clone;
|
|
GLuint i;
|
|
|
|
clone = _mesa_new_parameter_list();
|
|
if (!clone)
|
|
return NULL;
|
|
|
|
/** Not too efficient, but correct */
|
|
for (i = 0; i < list->NumParameters; i++) {
|
|
struct gl_program_parameter *p = list->Parameters + i;
|
|
GLuint size = MIN2(p->Size, 4);
|
|
GLint j = _mesa_add_parameter(clone, p->Type, p->Name, size, p->DataType,
|
|
list->ParameterValues[i], NULL);
|
|
ASSERT(j >= 0);
|
|
/* copy state indexes */
|
|
if (p->Type == PROGRAM_STATE_VAR) {
|
|
GLint k;
|
|
struct gl_program_parameter *q = clone->Parameters + j;
|
|
for (k = 0; k < STATE_LENGTH; k++) {
|
|
q->StateIndexes[k] = p->StateIndexes[k];
|
|
}
|
|
}
|
|
else {
|
|
clone->Parameters[j].Size = p->Size;
|
|
}
|
|
}
|
|
|
|
clone->StateFlags = list->StateFlags;
|
|
|
|
return clone;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return a new parameter list which is listA + listB.
|
|
*/
|
|
struct gl_program_parameter_list *
|
|
_mesa_combine_parameter_lists(const struct gl_program_parameter_list *listA,
|
|
const struct gl_program_parameter_list *listB)
|
|
{
|
|
struct gl_program_parameter_list *list;
|
|
|
|
if (listA) {
|
|
list = _mesa_clone_parameter_list(listA);
|
|
if (list && listB) {
|
|
GLuint i;
|
|
for (i = 0; i < listB->NumParameters; i++) {
|
|
struct gl_program_parameter *param = listB->Parameters + i;
|
|
_mesa_add_parameter(list, param->Type, param->Name, param->Size,
|
|
param->DataType,
|
|
listB->ParameterValues[i],
|
|
param->StateIndexes);
|
|
}
|
|
}
|
|
}
|
|
else if (listB) {
|
|
list = _mesa_clone_parameter_list(listB);
|
|
}
|
|
else {
|
|
list = NULL;
|
|
}
|
|
return list;
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Find longest name of all uniform parameters in list.
|
|
*/
|
|
GLuint
|
|
_mesa_longest_parameter_name(const struct gl_program_parameter_list *list,
|
|
enum register_file type)
|
|
{
|
|
GLuint i, maxLen = 0;
|
|
if (!list)
|
|
return 0;
|
|
for (i = 0; i < list->NumParameters; i++) {
|
|
if (list->Parameters[i].Type == type) {
|
|
GLuint len = _mesa_strlen(list->Parameters[i].Name);
|
|
if (len > maxLen)
|
|
maxLen = len;
|
|
}
|
|
}
|
|
return maxLen;
|
|
}
|
|
|
|
|
|
/**
|
|
* Count the number of parameters in the last that match the given type.
|
|
*/
|
|
GLuint
|
|
_mesa_num_parameters_of_type(const struct gl_program_parameter_list *list,
|
|
enum register_file type)
|
|
{
|
|
GLuint i, count = 0;
|
|
if (list) {
|
|
for (i = 0; i < list->NumParameters; i++) {
|
|
if (list->Parameters[i].Type == type)
|
|
count++;
|
|
}
|
|
}
|
|
return count;
|
|
}
|