62  * the top matrix of the current matrix stack and sets
105  * the top matrix of the current matrix stack and sets
138  * Set the current matrix stack.
140  * \param mode matrix stack.
146  * with the specified matrix stack.
216  * Push the current matrix stack.
220  * Verifies the current matrix stack is not full, and duplicates the top-most
221  * matrix in the stack.
222  * Marks __struct gl_contextRec::NewState with the stack dirty flag.
228    struct gl_matrix_stack *stack = ctx->CurrentStack;  in _mesa_PushMatrix()  local
234    if (stack->Depth + 1 >= stack->MaxDepth) {  in _mesa_PushMatrix()
246    if (stack->Depth + 1 >= stack->StackSize) {  in _mesa_PushMatrix()
247       unsigned new_stack_size = stack->StackSize * 2;  in _mesa_PushMatrix()
249       GLmatrix *new_stack = realloc(stack->Stack,  in _mesa_PushMatrix()
257       for (i = stack->StackSize; i < new_stack_size; i++)  in _mesa_PushMatrix()
260       stack->Stack = new_stack;  in _mesa_PushMatrix()
261       stack->StackSize = new_stack_size;  in _mesa_PushMatrix()
264    _math_matrix_copy( &stack->Stack[stack->Depth + 1],  in _mesa_PushMatrix()
265                       &stack->Stack[stack->Depth] );  in _mesa_PushMatrix()
266    stack->Depth++;  in _mesa_PushMatrix()
267    stack->Top = &(stack->Stack[stack->Depth]);  in _mesa_PushMatrix()
268    ctx->NewState |= stack->DirtyFlag;  in _mesa_PushMatrix()
273  * Pop the current matrix stack.
277  * Flushes the vertices, verifies the current matrix stack is not empty, and
278  * moves the stack head down.
279  * Marks __struct gl_contextRec::NewState with the dirty stack flag.
285    struct gl_matrix_stack *stack = ctx->CurrentStack;  in _mesa_PopMatrix()  local
293    if (stack->Depth == 0) {  in _mesa_PopMatrix()
305    stack->Depth--;  in _mesa_PopMatrix()
306    stack->Top = &(stack->Stack[stack->Depth]);  in _mesa_PopMatrix()
307    ctx->NewState |= stack->DirtyFlag;  in _mesa_PopMatrix()
317  * top-most matrix in the current stack.
318  * Marks __struct gl_contextRec::NewState with the stack dirty flag.
343  * matrix in the current stack and the given matrix.
344  * Marks __struct gl_contextRec::NewState with the dirty stack flag.
375  * matrix in the current stack and the given matrix. Marks
376  * __struct gl_contextRec::NewState with the dirty stack flag.
408  * matrix in the current stack and the given parameters. Marks
409  * __struct gl_contextRec::NewState with the dirty stack flag.
434  * matrix in the current stack and the given parameters. Marks
435  * __struct gl_contextRec::NewState with the dirty stack flag.
458  * matrix in the current stack and the given parameters. Marks
459  * __struct gl_contextRec::NewState with the dirty stack flag.
563  * Update the projection matrix stack.
568  * stack, and recomputes user clip positions if necessary.
645 /** Matrix stack initialization */
650  * Initialize a matrix stack.
652  * \param stack matrix stack.
653  * \param maxDepth maximum stack depth.
656  * Allocates an array of \p maxDepth elements for the matrix stack and calls
660 init_matrix_stack( struct gl_matrix_stack *stack,  in init_matrix_stack()  argument
665    stack->Depth = 0;  in init_matrix_stack()
666    stack->MaxDepth = maxDepth;  in init_matrix_stack()
667    stack->DirtyFlag = dirtyFlag;  in init_matrix_stack()
668    /* The stack will be dynamically resized at glPushMatrix() time */  in init_matrix_stack()
669    stack->Stack = calloc(1, sizeof(GLmatrix));  in init_matrix_stack()
670    stack->StackSize = 1;  in init_matrix_stack()
671    for (i = 0; i < stack->StackSize; i++) {  in init_matrix_stack()
672       _math_matrix_ctr(&stack->Stack[i]);  in init_matrix_stack()
674    stack->Top = stack->Stack;  in init_matrix_stack()
678  * Free matrix stack.
680  * \param stack matrix stack.
682  * Calls _math_matrix_dtr() for each element of the matrix stack and
686 free_matrix_stack( struct gl_matrix_stack *stack )  in free_matrix_stack()  argument
689    for (i = 0; i < stack->StackSize; i++) {  in free_matrix_stack()
690       _math_matrix_dtr(&stack->Stack[i]);  in free_matrix_stack()
692    free(stack->Stack);  in free_matrix_stack()
693    stack->Stack = stack->Top = NULL;  in free_matrix_stack()
694    stack->StackSize = 0;  in free_matrix_stack()