| /* |
| * 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" |
| |
| |
| /** |
| * 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 |
| */ |
| static GLboolean |
| lookup_parameter_constant(const struct gl_program_parameter_list *list, |
| const gl_constant_value v[], GLuint vSize, |
| GLint *posOut, GLuint *swizzleOut) |
| { |
| GLuint i; |
| |
| assert(vSize >= 1); |
| assert(vSize <= 4); |
| |
| if (!list) { |
| *posOut = -1; |
| return GL_FALSE; |
| } |
| |
| 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; |
| } |
| } |
| } |
| } |
| } |
| |
| *posOut = -1; |
| return GL_FALSE; |
| } |
| |
| |
| struct gl_program_parameter_list * |
| _mesa_new_parameter_list(void) |
| { |
| return CALLOC_STRUCT(gl_program_parameter_list); |
| } |
| |
| |
| 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; |
| } |
| |
| |
| /** |
| * 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); |
| } |
| |
| |
| /** |
| * Make sure there are enough unused parameter slots. Reallocate the list |
| * if needed. |
| * |
| * \param paramList where to reserve parameter slots |
| * \param reserve_slots number of slots to reserve |
| */ |
| void |
| _mesa_reserve_parameter_storage(struct gl_program_parameter_list *paramList, |
| unsigned reserve_slots) |
| { |
| const GLuint oldNum = paramList->NumParameters; |
| |
| if (oldNum + reserve_slots > paramList->Size) { |
| /* Need to grow the parameter list array (alloc some extra) */ |
| paramList->Size = paramList->Size + 4 * reserve_slots; |
| |
| /* 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); |
| } |
| } |
| |
| |
| /** |
| * 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); |
| |
| _mesa_reserve_parameter_storage(paramList, sz4); |
| |
| if (!paramList->Parameters || |
| !paramList->ParameterValues) { |
| /* out of memory */ |
| paramList->NumParameters = 0; |
| paramList->Size = 0; |
| return -1; |
| } |
| |
| 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; |
| } |
| |
| |
| /** |
| * 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 && |
| 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 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; |
| } |
| } |
| |
| 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); |
| |
| /* free name string here since we duplicated it in add_parameter() */ |
| free(name); |
| |
| return index; |
| } |
