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-rw-r--r--mesalib/src/mesa/program/prog_parameter_layout.c214
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diff --git a/mesalib/src/mesa/program/prog_parameter_layout.c b/mesalib/src/mesa/program/prog_parameter_layout.c
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+/*
+ * 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/compiler.h"
+#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, 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);
+
+ /* copy src parameter [i] to dest parameter [j] */
+ memcpy(& dst->Parameters[j], curr,
+ sizeof(dst->Parameters[j]));
+ memcpy(dst->ParameterValues[j], src->ParameterValues[i],
+ sizeof(GLfloat) * 4);
+
+ /* Pointer to the string name was copied. Null-out src param name
+ * to prevent double free later.
+ */
+ curr->Name = NULL;
+
+ dst->NumParameters++;
+ }
+
+ return base;
+}
+
+
+/**
+ * XXX description???
+ * \return GL_TRUE for success, GL_FALSE for failure
+ */
+GLboolean
+_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 GL_FALSE;
+ }
+
+ 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;
+ }
+
+ if ((inst->SrcReg[i].Base.File <= PROGRAM_VARYING )
+ || (inst->SrcReg[i].Base.File >= PROGRAM_WRITE_ONLY)) {
+ continue;
+ }
+
+ inst->Base.SrcReg[i] = inst->SrcReg[i].Base;
+ p = & state->prog->Parameters->Parameters[idx];
+
+ switch (p->Type) {
+ 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(swizzle, inst->Base.SrcReg[i].Swizzle);
+ break;
+ }
+
+ case PROGRAM_STATE_VAR:
+ inst->Base.SrcReg[i].Index =
+ _mesa_add_state_reference(layout, p->StateIndexes);
+ break;
+
+ default:
+ break;
+ }
+
+ inst->SrcReg[i].Base.File = p->Type;
+ inst->Base.SrcReg[i].File = p->Type;
+ }
+ }
+
+ _mesa_free_parameter_list(state->prog->Parameters);
+ state->prog->Parameters = layout;
+
+ return GL_TRUE;
+}
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