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fragment program execution
This commit is contained in:
Brian Paul
parent
610d59981a
commit
890bcc0be3
2 changed files with 415 additions and 0 deletions
376
src/mesa/swrast/s_nvfragprog.c
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376
src/mesa/swrast/s_nvfragprog.c
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/* $Id: s_nvfragprog.c,v 1.1 2003/01/14 04:57:47 brianp Exp $ */
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/*
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* Mesa 3-D graphics library
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* Version: 5.1
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*
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* Copyright (C) 1999-2002 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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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "glheader.h"
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#include "colormac.h"
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#include "context.h"
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#include "nvfragprog.h"
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#include "macros.h"
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#include "mmath.h"
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#include "s_nvfragprog.h"
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/**
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* Fetch a 4-element float vector from the given source register.
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* Apply swizzling and negating as needed.
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*/
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static void
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fetch_vector4( const struct fp_src_register *source,
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const struct fp_machine *machine,
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GLfloat result[4] )
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{
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const GLfloat *src;
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/*
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if (source->RelAddr) {
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GLint reg = source->Register + machine->AddressReg;
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if (reg < VP_PROG_REG_START || reg > VP_PROG_REG_END)
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src = zero;
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else
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src = machine->Registers[reg];
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}
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else
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*/
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src = machine->Registers[source->Register];
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result[0] = src[source->Swizzle[0]];
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result[1] = src[source->Swizzle[1]];
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result[2] = src[source->Swizzle[2]];
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result[3] = src[source->Swizzle[3]];
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if (source->NegateBase) {
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result[0] = -result[0];
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result[1] = -result[1];
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result[2] = -result[2];
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result[3] = -result[3];
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}
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if (source->Abs) {
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result[0] = FABSF(result[0]);
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result[1] = FABSF(result[1]);
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result[2] = FABSF(result[2]);
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result[3] = FABSF(result[3]);
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}
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if (source->NegateAbs) {
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result[0] = -result[0];
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result[1] = -result[1];
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result[2] = -result[2];
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result[3] = -result[3];
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}
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}
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/**
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* As above, but only return result[0] element.
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*/
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static void
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fetch_vector1( const struct fp_src_register *source,
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const struct fp_machine *machine,
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GLfloat result[4] )
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{
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const GLfloat *src;
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/*
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if (source->RelAddr) {
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GLint reg = source->Register + machine->AddressReg;
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if (reg < VP_PROG_REG_START || reg > VP_PROG_REG_END)
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src = zero;
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else
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src = machine->Registers[reg];
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}
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else
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*/
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src = machine->Registers[source->Register];
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result[0] = src[source->Swizzle[0]];
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if (source->NegateBase) {
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result[0] = -result[0];
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}
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if (source->Abs) {
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result[0] = FABSF(result[0]);
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}
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if (source->NegateAbs) {
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result[0] = -result[0];
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}
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}
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/*
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* Test value against zero and return GT, LT, EQ or UN if NaN.
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*/
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static INLINE GLuint
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generate_cc( float value )
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{
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if (value != value)
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return COND_UN; /* NaN */
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if (value > 0.0F)
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return COND_GT;
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if (value < 0.0F)
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return COND_LT;
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return COND_EQ;
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}
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/*
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* Test if the ccMaskRule is satisfied by the given condition code.
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* Used to mask destination writes according to the current condition codee.
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*/
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static INLINE GLboolean
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test_cc(GLuint condCode, GLuint ccMaskRule)
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{
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switch (ccMaskRule) {
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case COND_EQ: return (condCode == COND_EQ);
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case COND_NE: return (condCode != COND_EQ);
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case COND_LT: return (condCode == COND_LT);
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case COND_GE: return (condCode == COND_GT || condCode == COND_EQ);
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case COND_LE: return (condCode == COND_LT || condCode == COND_EQ);
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case COND_GT: return (condCode == COND_GT);
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case COND_TR: return GL_TRUE;
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case COND_FL: return GL_FALSE;
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default: return GL_TRUE;
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}
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}
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/**
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* Store 4 floats into a register.
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*/
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static void
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store_vector4( const struct fp_dst_register *dest, struct fp_machine *machine,
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const GLfloat value[4], GLboolean clamp, GLboolean updateCC )
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{
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GLfloat *dstReg = machine->Registers[dest->Register];
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GLfloat clampedValue[4];
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const GLboolean *writeMask = dest->WriteMask;
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GLboolean condWriteMask[4];
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if (clamp) {
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clampedValue[0] = CLAMP(value[0], 0.0F, 1.0F);
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clampedValue[1] = CLAMP(value[1], 0.0F, 1.0F);
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clampedValue[2] = CLAMP(value[2], 0.0F, 1.0F);
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clampedValue[3] = CLAMP(value[3], 0.0F, 1.0F);
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value = clampedValue;
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}
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if (dest->CondMask != COND_TR) {
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condWriteMask[0] = writeMask[0]
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&& test_cc(machine->CondCodes[dest->CondSwizzle[0]], dest->CondMask);
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condWriteMask[1] = writeMask[1]
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&& test_cc(machine->CondCodes[dest->CondSwizzle[1]], dest->CondMask);
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condWriteMask[2] = writeMask[2]
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&& test_cc(machine->CondCodes[dest->CondSwizzle[2]], dest->CondMask);
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condWriteMask[3] = writeMask[3]
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&& test_cc(machine->CondCodes[dest->CondSwizzle[3]], dest->CondMask);
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writeMask = condWriteMask;
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}
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if (writeMask[0]) {
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dstReg[0] = value[0];
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if (updateCC)
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machine->CondCodes[0] = generate_cc(value[0]);
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}
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if (writeMask[1]) {
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dstReg[1] = value[1];
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if (updateCC)
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machine->CondCodes[1] = generate_cc(value[1]);
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}
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if (writeMask[2]) {
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dstReg[2] = value[2];
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if (updateCC)
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machine->CondCodes[2] = generate_cc(value[2]);
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}
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if (writeMask[3]) {
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dstReg[3] = value[3];
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if (updateCC)
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machine->CondCodes[3] = generate_cc(value[3]);
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}
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}
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/**
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* Execute the given vertex program
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*/
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static void
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execute_program(GLcontext *ctx, const struct fragment_program *program)
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{
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struct fp_machine *machine = &ctx->FragmentProgram.Machine;
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const struct fp_instruction *inst;
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for (inst = program->Instructions; inst->Opcode != FP_OPCODE_END; inst++) {
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switch (inst->Opcode) {
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case FP_OPCODE_ADD:
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{
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GLfloat a[4], b[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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fetch_vector4( &inst->SrcReg[1], machine, b );
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result[0] = a[0] + b[0];
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result[1] = a[1] + b[1];
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result[2] = a[2] + b[2];
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result[3] = a[3] + b[3];
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store_vector4( &inst->DstReg, machine, result, inst->Saturate,
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inst->UpdateCondRegister );
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}
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break;
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case FP_OPCODE_COS:
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{
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GLfloat a[4], result[4];
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fetch_vector1( &inst->SrcReg[0], machine, a );
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result[0] = result[1] = result[2] = result[3] = cos(a[0]);
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store_vector4( &inst->DstReg, machine, result, inst->Saturate,
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inst->UpdateCondRegister );
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}
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break;
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case FP_OPCODE_DP3:
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{
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GLfloat a[4], b[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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fetch_vector4( &inst->SrcReg[1], machine, b );
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result[0] = result[1] = result[2] = result[3] =
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a[0] + b[0] + a[1] * b[1] + a[2] * b[2];
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store_vector4( &inst->DstReg, machine, result, inst->Saturate,
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inst->UpdateCondRegister );
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}
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break;
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case FP_OPCODE_DP4:
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{
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GLfloat a[4], b[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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fetch_vector4( &inst->SrcReg[1], machine, b );
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result[0] = result[1] = result[2] = result[3] =
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a[0] + b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
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store_vector4( &inst->DstReg, machine, result, inst->Saturate,
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inst->UpdateCondRegister );
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}
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break;
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case FP_OPCODE_KIL:
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{
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const GLuint *swizzle = inst->DstReg.CondSwizzle;
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const GLuint condMask = inst->DstReg.CondMask;
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if (test_cc(machine->CondCodes[swizzle[0]], condMask) ||
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test_cc(machine->CondCodes[swizzle[1]], condMask) ||
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test_cc(machine->CondCodes[swizzle[2]], condMask) ||
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test_cc(machine->CondCodes[swizzle[3]], condMask))
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return;
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}
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break;
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case FP_OPCODE_LRP:
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{
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GLfloat a[4], b[4], c[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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fetch_vector4( &inst->SrcReg[1], machine, b );
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fetch_vector4( &inst->SrcReg[2], machine, c );
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result[0] = a[0] * b[0] + (1.0F - a[0]) * c[0];
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result[1] = a[1] * b[1] + (1.0F - a[1]) * c[1];
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result[2] = a[2] * b[2] + (1.0F - a[2]) * c[2];
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result[3] = a[3] * b[3] + (1.0F - a[3]) * c[3];
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store_vector4( &inst->DstReg, machine, result, inst->Saturate,
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inst->UpdateCondRegister );
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}
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break;
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case FP_OPCODE_MOV:
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{
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GLfloat t[4];
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fetch_vector4( &inst->SrcReg[0], machine, t );
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store_vector4( &inst->DstReg, machine, t, inst->Saturate,
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inst->UpdateCondRegister );
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}
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break;
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case FP_OPCODE_SEQ:
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{
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GLfloat a[4], b[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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fetch_vector4( &inst->SrcReg[1], machine, b );
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result[0] = (a[0] == b[0]) ? 1.0F : 0.0F;
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result[1] = (a[1] == b[1]) ? 1.0F : 0.0F;
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result[2] = (a[2] == b[2]) ? 1.0F : 0.0F;
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result[3] = (a[3] == b[3]) ? 1.0F : 0.0F;
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store_vector4( &inst->DstReg, machine, result, inst->Saturate,
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inst->UpdateCondRegister );
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}
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break;
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default:
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_mesa_problem(ctx, "Bad opcode in _mesa_exec_fragment_program");
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return;
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}
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}
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}
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void
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_swrast_exec_nv_fragment_program( GLcontext *ctx, struct sw_span *span )
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{
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GLuint i;
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for (i = 0; i < span->end; i++) {
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GLfloat *wpos = ctx->FragmentProgram.Machine.Registers[0];
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GLfloat *col0 = ctx->FragmentProgram.Machine.Registers[1];
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GLfloat *col1 = ctx->FragmentProgram.Machine.Registers[2];
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GLfloat *fogc = ctx->FragmentProgram.Machine.Registers[3];
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const GLfloat *colOut = ctx->FragmentProgram.Machine.Registers[FP_OUTPUT_REG_START];
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GLuint j;
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/* Clear temporary registers */
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for (j = 0; j < MAX_NV_FRAGMENT_PROGRAM_TEMPS; j++) {
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ctx->FragmentProgram.Machine.Registers[FP_TEMP_REG_START+j][0] = 0.0F;
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ctx->FragmentProgram.Machine.Registers[FP_TEMP_REG_START+j][1] = 0.0F;
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ctx->FragmentProgram.Machine.Registers[FP_TEMP_REG_START+j][2] = 0.0F;
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ctx->FragmentProgram.Machine.Registers[FP_TEMP_REG_START+j][3] = 0.0F;
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}
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/* Load input registers */
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wpos[0] = span->x + i;
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wpos[1] = span->y + i;
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wpos[2] = span->array->z[i];
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wpos[3] = 1.0;
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col0[0] = CHAN_TO_FLOAT(span->array->rgba[i][RCOMP]);
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col0[1] = CHAN_TO_FLOAT(span->array->rgba[i][GCOMP]);
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col0[2] = CHAN_TO_FLOAT(span->array->rgba[i][BCOMP]);
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col0[3] = CHAN_TO_FLOAT(span->array->rgba[i][ACOMP]);
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col1[0] = CHAN_TO_FLOAT(span->array->spec[i][RCOMP]);
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col1[1] = CHAN_TO_FLOAT(span->array->spec[i][GCOMP]);
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col1[2] = CHAN_TO_FLOAT(span->array->spec[i][BCOMP]);
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col1[3] = CHAN_TO_FLOAT(span->array->spec[i][ACOMP]);
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fogc[0] = span->array->fog[i];
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execute_program(ctx, ctx->FragmentProgram.Current);
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/* Store output registers */
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UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][RCOMP], colOut[0]);
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UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][GCOMP], colOut[1]);
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UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][BCOMP], colOut[2]);
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UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][ACOMP], colOut[3]);
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}
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}
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39
src/mesa/swrast/s_nvfragprog.h
Normal file
39
src/mesa/swrast/s_nvfragprog.h
Normal file
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@ -0,0 +1,39 @@
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/* $Id: s_nvfragprog.h,v 1.1 2003/01/14 04:57:47 brianp Exp $ */
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/*
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* Mesa 3-D graphics library
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* Version: 5.1
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*
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* Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
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||||
*
|
||||
* 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
|
||||
* BRIAN PAUL 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.
|
||||
*/
|
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#ifndef S_NVFRAGPROG_H
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#define S_NVFRAGPROG_H
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#include "swrast.h"
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extern void
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_swrast_exec_nv_fragment_program( GLcontext *ctx, struct sw_span *span );
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#endif
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