213 lines
7.8 KiB
C
213 lines
7.8 KiB
C
/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#define DEBUG_PARSING 0
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/**
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* \file arbprogparse.c
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* ARB_*_program parser core
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* \author Karl Rasche
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*/
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/**
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Notes on program parameters, etc.
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The instructions we emit will use six kinds of source registers:
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PROGRAM_INPUT - input registers
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PROGRAM_TEMPORARY - temp registers
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PROGRAM_ADDRESS - address/indirect register
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PROGRAM_CONSTANT - indexes into program->Parameters, a known constant/literal
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PROGRAM_STATE_VAR - indexes into program->Parameters, and may actually be:
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+ a state variable, like "state.fog.color", or
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+ a pointer to a "program.local[k]" parameter, or
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+ a pointer to a "program.env[k]" parameter
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Basically, all the program.local[] and program.env[] values will get mapped
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into the unified gl_program->Parameters array. This solves the problem of
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having three separate program parameter arrays.
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*/
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#include "main/glheader.h"
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#include "main/context.h"
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#include "arbprogparse.h"
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#include "programopt.h"
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#include "prog_parameter.h"
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#include "prog_statevars.h"
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#include "prog_instruction.h"
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#include "program_parser.h"
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void
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_mesa_parse_arb_fragment_program(struct gl_context* ctx, GLenum target,
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const GLvoid *str, GLsizei len,
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struct gl_program *program)
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{
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struct gl_program prog;
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struct asm_parser_state state;
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GLuint i;
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assert(target == GL_FRAGMENT_PROGRAM_ARB);
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memset(&prog, 0, sizeof(prog));
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memset(&state, 0, sizeof(state));
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state.prog = &prog;
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state.mem_ctx = program;
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if (!_mesa_parse_arb_program(ctx, target, (const GLubyte*) str, len,
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&state)) {
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/* Error in the program. Just return. */
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return;
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}
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ralloc_free(program->String);
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/* Copy the relevant contents of the arb_program struct into the
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* fragment_program struct.
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*/
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program->String = prog.String;
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program->arb.NumInstructions = prog.arb.NumInstructions;
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program->arb.NumTemporaries = prog.arb.NumTemporaries;
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program->arb.NumParameters = prog.arb.NumParameters;
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program->arb.NumAttributes = prog.arb.NumAttributes;
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program->arb.NumAddressRegs = prog.arb.NumAddressRegs;
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program->arb.NumNativeInstructions = prog.arb.NumNativeInstructions;
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program->arb.NumNativeTemporaries = prog.arb.NumNativeTemporaries;
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program->arb.NumNativeParameters = prog.arb.NumNativeParameters;
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program->arb.NumNativeAttributes = prog.arb.NumNativeAttributes;
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program->arb.NumNativeAddressRegs = prog.arb.NumNativeAddressRegs;
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program->arb.NumAluInstructions = prog.arb.NumAluInstructions;
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program->arb.NumTexInstructions = prog.arb.NumTexInstructions;
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program->arb.NumTexIndirections = prog.arb.NumTexIndirections;
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program->arb.NumNativeAluInstructions = prog.arb.NumAluInstructions;
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program->arb.NumNativeTexInstructions = prog.arb.NumTexInstructions;
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program->arb.NumNativeTexIndirections = prog.arb.NumTexIndirections;
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program->info.inputs_read = prog.info.inputs_read;
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program->info.outputs_written = prog.info.outputs_written;
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program->arb.IndirectRegisterFiles = prog.arb.IndirectRegisterFiles;
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for (i = 0; i < MAX_TEXTURE_IMAGE_UNITS; i++) {
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program->TexturesUsed[i] = prog.TexturesUsed[i];
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if (prog.TexturesUsed[i])
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program->SamplersUsed |= (1 << i);
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}
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program->ShadowSamplers = prog.ShadowSamplers;
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program->info.fs.origin_upper_left = state.option.OriginUpperLeft;
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program->info.fs.pixel_center_integer = state.option.PixelCenterInteger;
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program->info.fs.uses_discard = state.fragment.UsesKill;
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ralloc_free(program->arb.Instructions);
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program->arb.Instructions = prog.arb.Instructions;
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if (program->Parameters)
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_mesa_free_parameter_list(program->Parameters);
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program->Parameters = prog.Parameters;
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/* Append fog instructions now if the program has "OPTION ARB_fog_exp"
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* or similar. We used to leave this up to drivers, but it appears
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* there's no hardware that wants to do fog in a discrete stage separate
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* from the fragment shader.
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*/
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if (state.option.Fog != OPTION_NONE) {
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static const GLenum fog_modes[4] = {
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GL_NONE, GL_EXP, GL_EXP2, GL_LINEAR
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};
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/* XXX: we should somehow recompile this to remove clamping if disabled
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* On the ATI driver, this is unclampled if fragment clamping is disabled
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*/
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_mesa_append_fog_code(ctx, program, fog_modes[state.option.Fog], GL_TRUE);
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}
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#if DEBUG_FP
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printf("____________Fragment program %u ________\n", program->Id);
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_mesa_print_program(&program->Base);
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#endif
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}
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/**
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* Parse the vertex program string. If success, update the given
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* vertex_program object with the new program. Else, leave the vertex_program
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* object unchanged.
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*/
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void
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_mesa_parse_arb_vertex_program(struct gl_context *ctx, GLenum target,
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const GLvoid *str, GLsizei len,
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struct gl_program *program)
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{
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struct gl_program prog;
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struct asm_parser_state state;
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assert(target == GL_VERTEX_PROGRAM_ARB);
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memset(&prog, 0, sizeof(prog));
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memset(&state, 0, sizeof(state));
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state.prog = &prog;
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state.mem_ctx = program;
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if (!_mesa_parse_arb_program(ctx, target, (const GLubyte*) str, len,
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&state)) {
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_mesa_error(ctx, GL_INVALID_OPERATION, "glProgramString(bad program)");
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return;
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}
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ralloc_free(program->String);
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/* Copy the relevant contents of the arb_program struct into the
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* vertex_program struct.
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*/
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program->String = prog.String;
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program->arb.NumInstructions = prog.arb.NumInstructions;
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program->arb.NumTemporaries = prog.arb.NumTemporaries;
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program->arb.NumParameters = prog.arb.NumParameters;
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program->arb.NumAttributes = prog.arb.NumAttributes;
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program->arb.NumAddressRegs = prog.arb.NumAddressRegs;
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program->arb.NumNativeInstructions = prog.arb.NumNativeInstructions;
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program->arb.NumNativeTemporaries = prog.arb.NumNativeTemporaries;
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program->arb.NumNativeParameters = prog.arb.NumNativeParameters;
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program->arb.NumNativeAttributes = prog.arb.NumNativeAttributes;
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program->arb.NumNativeAddressRegs = prog.arb.NumNativeAddressRegs;
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program->info.inputs_read = prog.info.inputs_read;
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program->info.outputs_written = prog.info.outputs_written;
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program->arb.IndirectRegisterFiles = prog.arb.IndirectRegisterFiles;
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program->arb.IsPositionInvariant = (state.option.PositionInvariant)
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? GL_TRUE : GL_FALSE;
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ralloc_free(program->arb.Instructions);
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program->arb.Instructions = prog.arb.Instructions;
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if (program->Parameters)
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_mesa_free_parameter_list(program->Parameters);
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program->Parameters = prog.Parameters;
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#if DEBUG_VP
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printf("____________Vertex program %u __________\n", program->Id);
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_mesa_print_program(program);
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#endif
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}
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