diff options
Diffstat (limited to 'src/mesa/shader/prog_parameter_layout.c')
| -rw-r--r-- | src/mesa/shader/prog_parameter_layout.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/mesa/shader/prog_parameter_layout.c b/src/mesa/shader/prog_parameter_layout.c new file mode 100644 index 00000000000..f374636f113 --- /dev/null +++ b/src/mesa/shader/prog_parameter_layout.c @@ -0,0 +1,205 @@ +/* + * Copyright © 2009 Intel Corporation + * + * 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 (including the next + * paragraph) 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_layout.c + * \brief Helper functions to layout storage for program parameters + * + * \author Ian Romanick <ian.d.romanick@intel.com> + */ + +#include "main/mtypes.h" +#include "prog_parameter.h" +#include "prog_parameter_layout.h" +#include "prog_instruction.h" +#include "program_parser.h" + +unsigned +_mesa_combine_swizzles(unsigned base, unsigned applied) +{ + unsigned swiz = 0; + unsigned i; + + for (i = 0; i < 4; i++) { + const unsigned s = GET_SWZ(applied, i); + + swiz |= ((s <= SWIZZLE_W) ? GET_SWZ(base, s) : s) << (i * 3); + } + + return swiz; +} + + +/** + * Copy indirect access array from one parameter list to another + * + * \param src Parameter array copied from + * \param dst Parameter array copied to + * \param first Index of first element in \c src to copy + * \param count Number of elements to copy + * + * \return + * The location in \c dst of the first element copied from \c src on + * success. -1 on failure. + * + * \warning + * This function assumes that there is already enough space available in + * \c dst to hold all of the elements that will be copied over. + */ +static int +copy_indirect_accessed_array(struct gl_program_parameter_list *src, + struct gl_program_parameter_list *dst, + unsigned first, unsigned count) +{ + const int base = dst->NumParameters; + unsigned i; + unsigned j; + + + for (i = first; i < (first + count); i++) { + struct gl_program_parameter *curr = & src->Parameters[i]; + + + if (curr->Type == PROGRAM_CONSTANT) { + j = dst->NumParameters; + } else { + for (j = 0; j < dst->NumParameters; j++) { + if (memcmp(dst->Parameters[j].StateIndexes, curr->StateIndexes, + sizeof(curr->StateIndexes)) == 0) { + return -1; + } + } + } + + assert(j == dst->NumParameters); + + memcpy(& dst->Parameters[j], curr, + sizeof(dst->Parameters[j])); + memcpy(dst->ParameterValues[j], src->ParameterValues[i], + sizeof(GLfloat) * 4); + curr->Name = NULL; + + dst->NumParameters++; + } + + return base; +} + + +int +_mesa_layout_parameters(struct asm_parser_state *state) +{ + struct gl_program_parameter_list *layout; + struct asm_instruction *inst; + unsigned i; + + + layout = + _mesa_new_parameter_list_sized(state->prog->Parameters->NumParameters); + + + /* PASS 1: Move any parameters that are accessed indirectly from the + * original parameter list to the new parameter list. + */ + for (inst = state->inst_head; inst != NULL; inst = inst->next) { + for (i = 0; i < 3; i++) { + if (inst->SrcReg[i].Base.RelAddr) { + /* Only attempt to add the to the new parameter list once. + */ + if (!inst->SrcReg[i].Symbol->pass1_done) { + const int new_begin = + copy_indirect_accessed_array(state->prog->Parameters, layout, + inst->SrcReg[i].Symbol->param_binding_begin, + inst->SrcReg[i].Symbol->param_binding_length); + + if (new_begin < 0) { + return 0; + } + + inst->SrcReg[i].Symbol->param_binding_begin = new_begin; + inst->SrcReg[i].Symbol->pass1_done = 1; + } + + /* Previously the Index was just the offset from the parameter + * array. Now that the base of the parameter array is known, the + * index can be updated to its actual value. + */ + inst->Base.SrcReg[i] = inst->SrcReg[i].Base; + inst->Base.SrcReg[i].Index += + inst->SrcReg[i].Symbol->param_binding_begin; + } + } + } + + + /* PASS 2: Move any parameters that are not accessed indirectly from the + * original parameter list to the new parameter list. + */ + for (inst = state->inst_head; inst != NULL; inst = inst->next) { + for (i = 0; i < 3; i++) { + const struct gl_program_parameter *p; + const int idx = inst->SrcReg[i].Base.Index; + unsigned swizzle = SWIZZLE_NOOP; + + + /* All relative addressed operands were processed on the first + * pass. Just skip them here. + */ + if (inst->SrcReg[i].Base.RelAddr) { + continue; + } + + + inst->Base.SrcReg[i] = inst->SrcReg[i].Base; + p = & state->prog->Parameters->Parameters[idx]; + + switch (inst->SrcReg[i].Base.File) { + case PROGRAM_CONSTANT: { + const float *const v = + state->prog->Parameters->ParameterValues[idx]; + + inst->Base.SrcReg[i].Index = + _mesa_add_unnamed_constant(layout, v, p->Size, & swizzle); + + inst->Base.SrcReg[i].Swizzle = + _mesa_combine_swizzles(inst->Base.SrcReg[i].Swizzle, swizzle); + break; + } + + case PROGRAM_STATE_VAR: + inst->Base.SrcReg[i].Index = + _mesa_add_state_reference(layout, p->StateIndexes); + break; + + default: + break; + } + } + } + + + _mesa_free_parameter_list(state->prog->Parameters); + state->prog->Parameters = layout; + + return 1; +} |