0,0 → 1,509 |
/* |
* Mesa 3-D graphics library |
* |
* Copyright (C) 1999-2008 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 |
* 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. |
*/ |
|
/** |
* \file prog_parameter.c |
* Program parameter lists and functions. |
* \author Brian Paul |
*/ |
|
|
#include "main/glheader.h" |
#include "main/imports.h" |
#include "main/macros.h" |
#include "prog_instruction.h" |
#include "prog_parameter.h" |
#include "prog_statevars.h" |
|
|
struct gl_program_parameter_list * |
_mesa_new_parameter_list(void) |
{ |
return CALLOC_STRUCT(gl_program_parameter_list); |
} |
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struct gl_program_parameter_list * |
_mesa_new_parameter_list_sized(unsigned size) |
{ |
struct gl_program_parameter_list *p = _mesa_new_parameter_list(); |
|
if ((p != NULL) && (size != 0)) { |
p->Size = size; |
|
/* alloc arrays */ |
p->Parameters = (struct gl_program_parameter *) |
calloc(size, sizeof(struct gl_program_parameter)); |
|
p->ParameterValues = (gl_constant_value (*)[4]) |
_mesa_align_malloc(size * 4 *sizeof(gl_constant_value), 16); |
|
|
if ((p->Parameters == NULL) || (p->ParameterValues == NULL)) { |
free(p->Parameters); |
_mesa_align_free(p->ParameterValues); |
free(p); |
p = NULL; |
} |
} |
|
return p; |
} |
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/** |
* Free a parameter list and all its parameters |
*/ |
void |
_mesa_free_parameter_list(struct gl_program_parameter_list *paramList) |
{ |
GLuint i; |
for (i = 0; i < paramList->NumParameters; i++) { |
free((void *)paramList->Parameters[i].Name); |
} |
free(paramList->Parameters); |
_mesa_align_free(paramList->ParameterValues); |
free(paramList); |
} |
|
|
/** |
* Add a new parameter to a parameter list. |
* Note that parameter values are usually 4-element GLfloat vectors. |
* When size > 4 we'll allocate a sequential block of parameters to |
* store all the values (in blocks of 4). |
* |
* \param paramList the list to add the parameter to |
* \param type type of parameter, such as |
* \param name the parameter name, will be duplicated/copied! |
* \param size number of elements in 'values' vector (1..4, or more) |
* \param datatype GL_FLOAT, GL_FLOAT_VECx, GL_INT, GL_INT_VECx or GL_NONE. |
* \param values initial parameter value, up to 4 gl_constant_values, or NULL |
* \param state state indexes, or NULL |
* \return index of new parameter in the list, or -1 if error (out of mem) |
*/ |
GLint |
_mesa_add_parameter(struct gl_program_parameter_list *paramList, |
gl_register_file type, const char *name, |
GLuint size, GLenum datatype, |
const gl_constant_value *values, |
const gl_state_index state[STATE_LENGTH]) |
{ |
const GLuint oldNum = paramList->NumParameters; |
const GLuint sz4 = (size + 3) / 4; /* no. of new param slots needed */ |
|
assert(size > 0); |
|
if (oldNum + sz4 > paramList->Size) { |
/* Need to grow the parameter list array (alloc some extra) */ |
paramList->Size = paramList->Size + 4 * sz4; |
|
/* realloc arrays */ |
paramList->Parameters = |
realloc(paramList->Parameters, |
paramList->Size * sizeof(struct gl_program_parameter)); |
|
paramList->ParameterValues = (gl_constant_value (*)[4]) |
_mesa_align_realloc(paramList->ParameterValues, /* old buf */ |
oldNum * 4 * sizeof(gl_constant_value),/* old sz */ |
paramList->Size*4*sizeof(gl_constant_value),/*new*/ |
16); |
} |
|
if (!paramList->Parameters || |
!paramList->ParameterValues) { |
/* out of memory */ |
paramList->NumParameters = 0; |
paramList->Size = 0; |
return -1; |
} |
else { |
GLuint i, j; |
|
paramList->NumParameters = oldNum + sz4; |
|
memset(¶mList->Parameters[oldNum], 0, |
sz4 * sizeof(struct gl_program_parameter)); |
|
for (i = 0; i < sz4; i++) { |
struct gl_program_parameter *p = paramList->Parameters + oldNum + i; |
p->Name = name ? strdup(name) : NULL; |
p->Type = type; |
p->Size = size; |
p->DataType = datatype; |
if (values) { |
if (size >= 4) { |
COPY_4V(paramList->ParameterValues[oldNum + i], values); |
} |
else { |
/* copy 1, 2 or 3 values */ |
GLuint remaining = size % 4; |
assert(remaining < 4); |
for (j = 0; j < remaining; j++) { |
paramList->ParameterValues[oldNum + i][j].f = values[j].f; |
} |
/* fill in remaining positions with zeros */ |
for (; j < 4; j++) { |
paramList->ParameterValues[oldNum + i][j].f = 0.0f; |
} |
} |
values += 4; |
p->Initialized = GL_TRUE; |
} |
else { |
/* silence valgrind */ |
for (j = 0; j < 4; j++) |
paramList->ParameterValues[oldNum + i][j].f = 0; |
} |
size -= 4; |
} |
|
if (state) { |
for (i = 0; i < STATE_LENGTH; i++) |
paramList->Parameters[oldNum].StateIndexes[i] = state[i]; |
} |
|
return (GLint) oldNum; |
} |
} |
|
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/** |
* Add a new unnamed constant to the parameter list. This will be used |
* when a fragment/vertex program contains something like this: |
* MOV r, { 0, 1, 2, 3 }; |
* If swizzleOut is non-null we'll search the parameter list for an |
* existing instance of the constant which matches with a swizzle. |
* |
* \param paramList the parameter list |
* \param values four float values |
* \param swizzleOut returns swizzle mask for accessing the constant |
* \return index/position of the new parameter in the parameter list. |
*/ |
GLint |
_mesa_add_typed_unnamed_constant(struct gl_program_parameter_list *paramList, |
const gl_constant_value values[4], GLuint size, |
GLenum datatype, GLuint *swizzleOut) |
{ |
GLint pos; |
assert(size >= 1); |
assert(size <= 4); |
|
if (swizzleOut && |
_mesa_lookup_parameter_constant(paramList, values, |
size, &pos, swizzleOut)) { |
return pos; |
} |
|
/* Look for empty space in an already unnamed constant parameter |
* to add this constant. This will only work for single-element |
* constants because we rely on smearing (i.e. .yyyy or .zzzz). |
*/ |
if (size == 1 && swizzleOut) { |
for (pos = 0; pos < (GLint) paramList->NumParameters; pos++) { |
struct gl_program_parameter *p = paramList->Parameters + pos; |
if (p->Type == PROGRAM_CONSTANT && p->Size + size <= 4) { |
/* ok, found room */ |
gl_constant_value *pVal = paramList->ParameterValues[pos]; |
GLuint swz = p->Size; /* 1, 2 or 3 for Y, Z, W */ |
pVal[p->Size] = values[0]; |
p->Size++; |
*swizzleOut = MAKE_SWIZZLE4(swz, swz, swz, swz); |
return pos; |
} |
} |
} |
|
/* add a new parameter to store this constant */ |
pos = _mesa_add_parameter(paramList, PROGRAM_CONSTANT, NULL, |
size, datatype, values, NULL); |
if (pos >= 0 && swizzleOut) { |
if (size == 1) |
*swizzleOut = SWIZZLE_XXXX; |
else |
*swizzleOut = SWIZZLE_NOOP; |
} |
return pos; |
} |
|
/** |
* Add a new unnamed constant to the parameter list. This will be used |
* when a fragment/vertex program contains something like this: |
* MOV r, { 0, 1, 2, 3 }; |
* If swizzleOut is non-null we'll search the parameter list for an |
* existing instance of the constant which matches with a swizzle. |
* |
* \param paramList the parameter list |
* \param values four float values |
* \param swizzleOut returns swizzle mask for accessing the constant |
* \return index/position of the new parameter in the parameter list. |
* \sa _mesa_add_typed_unnamed_constant |
*/ |
GLint |
_mesa_add_unnamed_constant(struct gl_program_parameter_list *paramList, |
const gl_constant_value values[4], GLuint size, |
GLuint *swizzleOut) |
{ |
return _mesa_add_typed_unnamed_constant(paramList, values, size, GL_NONE, |
swizzleOut); |
} |
|
|
/** |
* Add a new state reference to the parameter list. |
* This will be used when the program contains something like this: |
* PARAM ambient = state.material.front.ambient; |
* |
* \param paramList the parameter list |
* \param stateTokens an array of 5 (STATE_LENGTH) state tokens |
* \return index of the new parameter. |
*/ |
GLint |
_mesa_add_state_reference(struct gl_program_parameter_list *paramList, |
const gl_state_index stateTokens[STATE_LENGTH]) |
{ |
const GLuint size = 4; /* XXX fix */ |
char *name; |
GLint index; |
|
/* Check if the state reference is already in the list */ |
for (index = 0; index < (GLint) paramList->NumParameters; index++) { |
if (!memcmp(paramList->Parameters[index].StateIndexes, |
stateTokens, STATE_LENGTH * sizeof(gl_state_index))) { |
return index; |
} |
} |
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name = _mesa_program_state_string(stateTokens); |
index = _mesa_add_parameter(paramList, PROGRAM_STATE_VAR, name, |
size, GL_NONE, |
NULL, (gl_state_index *) stateTokens); |
paramList->StateFlags |= _mesa_program_state_flags(stateTokens); |
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/* free name string here since we duplicated it in add_parameter() */ |
free(name); |
|
return index; |
} |
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/** |
* Given a program parameter name, find its position in the list of parameters. |
* \param paramList the parameter list to search |
* \param nameLen length of name (in chars). |
* If length is negative, assume that name is null-terminated. |
* \param name the name to search for |
* \return index of parameter in the list. |
*/ |
GLint |
_mesa_lookup_parameter_index(const struct gl_program_parameter_list *paramList, |
GLsizei nameLen, const char *name) |
{ |
GLint i; |
|
if (!paramList) |
return -1; |
|
if (nameLen == -1) { |
/* name is null-terminated */ |
for (i = 0; i < (GLint) paramList->NumParameters; i++) { |
if (paramList->Parameters[i].Name && |
strcmp(paramList->Parameters[i].Name, name) == 0) |
return i; |
} |
} |
else { |
/* name is not null-terminated, use nameLen */ |
for (i = 0; i < (GLint) paramList->NumParameters; i++) { |
if (paramList->Parameters[i].Name && |
strncmp(paramList->Parameters[i].Name, name, nameLen) == 0 |
&& strlen(paramList->Parameters[i].Name) == (size_t)nameLen) |
return i; |
} |
} |
return -1; |
} |
|
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/** |
* Look for a float vector in the given parameter list. The float vector |
* may be of length 1, 2, 3 or 4. If swizzleOut is non-null, we'll try |
* swizzling to find a match. |
* \param list the parameter list to search |
* \param v the float vector to search for |
* \param vSize number of element in v |
* \param posOut returns the position of the constant, if found |
* \param swizzleOut returns a swizzle mask describing location of the |
* 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 gl_constant_value v[], GLuint vSize, |
GLint *posOut, GLuint *swizzleOut) |
{ |
GLuint i; |
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assert(vSize >= 1); |
assert(vSize <= 4); |
|
if (!list) { |
*posOut = -1; |
return GL_FALSE; |
} |
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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].u == list->ParameterValues[i][j].u) |
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 < list->Parameters[i].Size; j++) { |
if (list->ParameterValues[i][j].u == v[0].u) { |
/* 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].u == list->ParameterValues[i][j].u) { |
swz[j] = j; |
match++; |
} |
else { |
for (k = 0; k < list->Parameters[i].Size; k++) { |
if (v[j].u == list->ParameterValues[i][k].u) { |
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; |
} |
} |
} |
} |
} |
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*posOut = -1; |
return GL_FALSE; |
} |
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struct gl_program_parameter_list * |
_mesa_clone_parameter_list(const struct gl_program_parameter_list *list) |
{ |
struct gl_program_parameter_list *clone; |
GLuint i; |
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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; |
struct gl_program_parameter *pCopy; |
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); |
pCopy = clone->Parameters + j; |
/* copy state indexes */ |
if (p->Type == PROGRAM_STATE_VAR) { |
GLint k; |
for (k = 0; k < STATE_LENGTH; k++) { |
pCopy->StateIndexes[k] = p->StateIndexes[k]; |
} |
} |
else { |
clone->Parameters[j].Size = p->Size; |
} |
|
} |
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clone->StateFlags = list->StateFlags; |
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return clone; |
} |
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/** |
* 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; |
} |