868 lines
32 KiB
C
868 lines
32 KiB
C
/* $Id: s_nvfragprog.c,v 1.6 2003/03/04 16:34:03 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) 1999-2003 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 "s_nvfragprog.h"
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/**
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* Fetch a texel.
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*/
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static void
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fetch_texel( GLcontext *ctx, const GLfloat texcoord[4], GLuint unit,
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GLuint targetIndex, GLfloat color[4] )
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{
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const GLfloat *lambda = NULL;
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GLchan rgba[4];
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SWcontext *swrast = SWRAST_CONTEXT(ctx);
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const struct gl_texture_object *texObj = NULL;
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switch (targetIndex) {
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case TEXTURE_1D_INDEX:
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texObj = ctx->Texture.Unit[unit].Current1D;
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break;
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case TEXTURE_2D_INDEX:
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texObj = ctx->Texture.Unit[unit].Current2D;
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break;
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case TEXTURE_3D_INDEX:
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texObj = ctx->Texture.Unit[unit].Current3D;
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break;
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case TEXTURE_CUBE_INDEX:
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texObj = ctx->Texture.Unit[unit].CurrentCubeMap;
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break;
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case TEXTURE_RECT_INDEX:
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texObj = ctx->Texture.Unit[unit].CurrentRect;
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break;
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default:
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_mesa_problem(ctx, "Invalid target in fetch_texel");
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}
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swrast->TextureSample[unit](ctx, unit, texObj, 1,
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(const GLfloat (*)[4]) &texcoord,
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lambda, &rgba);
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}
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/**
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* Fetch a texel w/ partial derivatives.
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*/
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static void
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fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4],
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const GLfloat dtdx[4], const GLfloat dtdy[4],
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GLuint unit, GLuint targetIndex, GLfloat color[4] )
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{
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/* XXX to do */
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}
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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 = 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. Observe the instructions saturate and
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* set-condition-code flags.
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*/
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static void
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store_vector4( const struct fp_instruction *inst,
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struct fp_machine *machine,
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const GLfloat value[4] )
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{
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const struct fp_dst_register *dest = &(inst->DstReg);
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const GLboolean clamp = inst->Saturate;
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const GLboolean updateCC = inst->UpdateCondRegister;
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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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* \return GL_TRUE if program completed or GL_FALSE if program executed KIL.
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*/
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static GLboolean
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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, machine, result );
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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] = _mesa_cos(a[0]);
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store_vector4( inst, machine, result );
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}
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break;
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case FP_OPCODE_DDX: /* Partial derivative with respect to X */
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{
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GLfloat a[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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result[0] = 0; /* XXX fix */
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result[1] = 0;
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result[2] = 0;
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result[3] = 0;
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store_vector4( inst, machine, result );
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}
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break;
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case FP_OPCODE_DDY: /* Partial derivative with respect to Y */
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{
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GLfloat a[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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result[0] = 0; /* XXX fix */
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result[1] = 0;
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result[2] = 0;
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result[3] = 0;
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store_vector4( inst, machine, result );
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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, machine, result );
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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, machine, result );
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}
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break;
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case FP_OPCODE_DST: /* Distance vector */
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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] = 1.0F;
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result[1] = a[1] * b[1];
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result[2] = a[2];
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result[3] = b[3];
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store_vector4( inst, machine, result );
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}
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break;
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case FP_OPCODE_EX2: /* Exponential base 2 */
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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] =
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(GLfloat) _mesa_pow(2.0, a[0]);
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store_vector4( inst, machine, result );
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}
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break;
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case FP_OPCODE_FLR:
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{
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GLfloat a[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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result[0] = FLOORF(a[0]);
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result[1] = FLOORF(a[1]);
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result[2] = FLOORF(a[2]);
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result[3] = FLOORF(a[3]);
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store_vector4( inst, machine, result );
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}
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break;
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case FP_OPCODE_FRC:
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{
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GLfloat a[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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result[0] = a[0] - FLOORF(a[0]);
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result[1] = a[1] - FLOORF(a[1]);
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result[2] = a[2] - FLOORF(a[2]);
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result[3] = a[3] - FLOORF(a[3]);
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store_vector4( inst, machine, result );
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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 GL_FALSE;
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}
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break;
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case FP_OPCODE_LG2: /* log base 2 */
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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]
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= LOG2(a[0]);
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store_vector4( inst, machine, result );
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}
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break;
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case FP_OPCODE_LIT:
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{
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GLfloat a[4], result[4];
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fetch_vector4( &inst->SrcReg[0], machine, a );
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if (a[0] < 0.0F)
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a[0] = 0.0F;
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if (a[1] < 0.0F)
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a[1] = 0.0F;
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result[0] = 1.0F;
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result[1] = a[0];
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result[2] = (a[0] > 0.0) ? _mesa_pow(2.0, a[3]) : 0.0F;
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result[3] = 1.0F;
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store_vector4( inst, machine, result );
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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, machine, result );
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}
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break;
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case FP_OPCODE_MAD:
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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] + c[0];
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result[1] = a[1] * b[1] + c[1];
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result[2] = a[2] * b[2] + c[2];
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result[3] = a[3] * b[3] + c[3];
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store_vector4( inst, machine, result );
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}
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break;
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case FP_OPCODE_MAX:
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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] = MAX2(a[0], b[0]);
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result[1] = MAX2(a[1], b[1]);
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result[2] = MAX2(a[2], b[2]);
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result[3] = MAX2(a[3], b[3]);
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store_vector4( inst, machine, result );
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}
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break;
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case FP_OPCODE_MIN:
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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] = MIN2(a[0], b[0]);
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result[1] = MIN2(a[1], b[1]);
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result[2] = MIN2(a[2], b[2]);
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result[3] = MIN2(a[3], b[3]);
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store_vector4( inst, machine, result );
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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 result[4];
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fetch_vector4( &inst->SrcReg[0], machine, result );
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store_vector4( inst, machine, result );
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}
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break;
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case FP_OPCODE_MUL:
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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];
|
|
result[3] = a[3] * b[3];
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_PK2H: /* pack two 16-bit floats */
|
|
/* XXX this is probably wrong */
|
|
{
|
|
GLfloat a[4], result[4];
|
|
const GLuint *rawBits = (const GLuint *) a;
|
|
GLuint *rawResult = (GLuint *) result;
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
rawResult[0] = rawResult[1] = rawResult[2] = rawResult[3]
|
|
= rawBits[0] | (rawBits[1] << 16);
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_PK2US: /* pack two GLushorts */
|
|
{
|
|
GLfloat a[4], result[4];
|
|
GLuint usx, usy, *rawResult = (GLuint *) result;
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
a[0] = CLAMP(a[0], 0.0F, 1.0F);
|
|
a[1] = CLAMP(a[0], 0.0F, 1.0F);
|
|
usx = IROUND(a[0] * 65535.0F);
|
|
usy = IROUND(a[1] * 65535.0F);
|
|
rawResult[0] = rawResult[1] = rawResult[2] = rawResult[3]
|
|
= usx | (usy << 16);
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_PK4B: /* pack four GLbytes */
|
|
{
|
|
GLfloat a[4], result[4];
|
|
GLuint ubx, uby, ubz, ubw, *rawResult = (GLuint *) result;
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
a[0] = CLAMP(a[0], -128.0F / 127.0F, 1.0F);
|
|
a[1] = CLAMP(a[1], -128.0F / 127.0F, 1.0F);
|
|
a[2] = CLAMP(a[2], -128.0F / 127.0F, 1.0F);
|
|
a[3] = CLAMP(a[3], -128.0F / 127.0F, 1.0F);
|
|
ubx = IROUND(127.0F * a[0] + 128.0F);
|
|
uby = IROUND(127.0F * a[1] + 128.0F);
|
|
ubz = IROUND(127.0F * a[2] + 128.0F);
|
|
ubw = IROUND(127.0F * a[3] + 128.0F);
|
|
rawResult[0] = rawResult[1] = rawResult[2] = rawResult[3]
|
|
= ubx | (uby << 8) | (ubz << 16) | (ubw << 24);
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_PK4UB: /* pack four GLubytes */
|
|
{
|
|
GLfloat a[4], result[4];
|
|
GLuint ubx, uby, ubz, ubw, *rawResult = (GLuint *) result;
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
a[0] = CLAMP(a[0], 0.0F, 1.0F);
|
|
a[1] = CLAMP(a[1], 0.0F, 1.0F);
|
|
a[2] = CLAMP(a[2], 0.0F, 1.0F);
|
|
a[3] = CLAMP(a[3], 0.0F, 1.0F);
|
|
ubx = IROUND(255.0F * a[0]);
|
|
uby = IROUND(255.0F * a[1]);
|
|
ubz = IROUND(255.0F * a[2]);
|
|
ubw = IROUND(255.0F * a[3]);
|
|
rawResult[0] = rawResult[1] = rawResult[2] = rawResult[3]
|
|
= ubx | (uby << 8) | (ubz << 16) | (ubw << 24);
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_POW:
|
|
{
|
|
GLfloat a[4], b[4], result[4];
|
|
fetch_vector1( &inst->SrcReg[0], machine, a );
|
|
fetch_vector1( &inst->SrcReg[1], machine, b );
|
|
result[0] = result[1] = result[2] = result[3]
|
|
= _mesa_pow(a[0], b[0]);
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_RCP:
|
|
{
|
|
GLfloat a[4], result[4];
|
|
fetch_vector1( &inst->SrcReg[0], machine, a );
|
|
result[0] = result[1] = result[2] = result[3]
|
|
= 1.0F / a[0];
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_RFL:
|
|
{
|
|
GLfloat axis[4], dir[4], result[4], tmp[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, axis );
|
|
fetch_vector4( &inst->SrcReg[1], machine, dir );
|
|
tmp[3] = axis[0] * axis[0]
|
|
+ axis[1] * axis[1]
|
|
+ axis[2] * axis[2];
|
|
tmp[0] = (2.0F * (axis[0] * dir[0] +
|
|
axis[1] * dir[1] +
|
|
axis[2] * dir[2])) / tmp[3];
|
|
result[0] = tmp[0] * axis[0] - dir[0];
|
|
result[1] = tmp[0] * axis[1] - dir[1];
|
|
result[2] = tmp[0] * axis[2] - dir[2];
|
|
/* result[3] is never written! XXX enforce in parser! */
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_RSQ: /* 1 / sqrt() */
|
|
{
|
|
GLfloat a[4], result[4];
|
|
fetch_vector1( &inst->SrcReg[0], machine, a );
|
|
result[0] = result[1] = result[2] = result[3] = INV_SQRTF(a[0]);
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_SEQ: /* set on equal */
|
|
{
|
|
GLfloat a[4], b[4], result[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
fetch_vector4( &inst->SrcReg[1], machine, b );
|
|
result[0] = (a[0] == b[0]) ? 1.0F : 0.0F;
|
|
result[1] = (a[1] == b[1]) ? 1.0F : 0.0F;
|
|
result[2] = (a[2] == b[2]) ? 1.0F : 0.0F;
|
|
result[3] = (a[3] == b[3]) ? 1.0F : 0.0F;
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_SFL: /* set false, operands ignored */
|
|
{
|
|
static const GLfloat result[4] = { 0.0F, 0.0F, 0.0F, 0.0F };
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_SGE: /* set on greater or equal */
|
|
{
|
|
GLfloat a[4], b[4], result[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
fetch_vector4( &inst->SrcReg[1], machine, b );
|
|
result[0] = (a[0] >= b[0]) ? 1.0F : 0.0F;
|
|
result[1] = (a[1] >= b[1]) ? 1.0F : 0.0F;
|
|
result[2] = (a[2] >= b[2]) ? 1.0F : 0.0F;
|
|
result[3] = (a[3] >= b[3]) ? 1.0F : 0.0F;
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_SGT: /* set on greater */
|
|
{
|
|
GLfloat a[4], b[4], result[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
fetch_vector4( &inst->SrcReg[1], machine, b );
|
|
result[0] = (a[0] > b[0]) ? 1.0F : 0.0F;
|
|
result[1] = (a[1] > b[1]) ? 1.0F : 0.0F;
|
|
result[2] = (a[2] > b[2]) ? 1.0F : 0.0F;
|
|
result[3] = (a[3] > b[3]) ? 1.0F : 0.0F;
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_SIN:
|
|
{
|
|
GLfloat a[4], result[4];
|
|
fetch_vector1( &inst->SrcReg[0], machine, a );
|
|
result[0] = result[1] = result[2] = result[3] = _mesa_sin(a[0]);
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_SLE: /* set on less or equal */
|
|
{
|
|
GLfloat a[4], b[4], result[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
fetch_vector4( &inst->SrcReg[1], machine, b );
|
|
result[0] = (a[0] <= b[0]) ? 1.0F : 0.0F;
|
|
result[1] = (a[1] <= b[1]) ? 1.0F : 0.0F;
|
|
result[2] = (a[2] <= b[2]) ? 1.0F : 0.0F;
|
|
result[3] = (a[3] <= b[3]) ? 1.0F : 0.0F;
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_SLT: /* set on less */
|
|
{
|
|
GLfloat a[4], b[4], result[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
fetch_vector4( &inst->SrcReg[1], machine, b );
|
|
result[0] = (a[0] < b[0]) ? 1.0F : 0.0F;
|
|
result[1] = (a[1] < b[1]) ? 1.0F : 0.0F;
|
|
result[2] = (a[2] < b[2]) ? 1.0F : 0.0F;
|
|
result[3] = (a[3] < b[3]) ? 1.0F : 0.0F;
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_SNE: /* set on not equal */
|
|
{
|
|
GLfloat a[4], b[4], result[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
fetch_vector4( &inst->SrcReg[1], machine, b );
|
|
result[0] = (a[0] != b[0]) ? 1.0F : 0.0F;
|
|
result[1] = (a[1] != b[1]) ? 1.0F : 0.0F;
|
|
result[2] = (a[2] != b[2]) ? 1.0F : 0.0F;
|
|
result[3] = (a[3] != b[3]) ? 1.0F : 0.0F;
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_STR: /* set true, operands ignored */
|
|
{
|
|
static const GLfloat result[4] = { 1.0F, 1.0F, 1.0F, 1.0F };
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_SUB:
|
|
{
|
|
GLfloat a[4], b[4], result[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
fetch_vector4( &inst->SrcReg[1], machine, b );
|
|
result[0] = a[0] - b[0];
|
|
result[1] = a[1] - b[1];
|
|
result[2] = a[2] - b[2];
|
|
result[3] = a[3] - b[3];
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_TEX:
|
|
/* Texel lookup */
|
|
{
|
|
GLfloat texcoord[4], color[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, texcoord );
|
|
fetch_texel( ctx, texcoord, inst->TexSrcUnit,
|
|
inst->TexSrcIndex, color );
|
|
store_vector4( inst, machine, color );
|
|
}
|
|
break;
|
|
case FP_OPCODE_TXD:
|
|
/* Texture lookup w/ partial derivatives for LOD */
|
|
{
|
|
GLfloat texcoord[4], dtdx[4], dtdy[4], color[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, texcoord );
|
|
fetch_vector4( &inst->SrcReg[1], machine, dtdx );
|
|
fetch_vector4( &inst->SrcReg[2], machine, dtdy );
|
|
fetch_texel_deriv( ctx, texcoord, dtdx, dtdy, inst->TexSrcUnit,
|
|
inst->TexSrcIndex, color );
|
|
store_vector4( inst, machine, color );
|
|
}
|
|
break;
|
|
case FP_OPCODE_TXP:
|
|
/* Texture lookup w/ perspective divide */
|
|
{
|
|
GLfloat texcoord[4], color[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, texcoord );
|
|
texcoord[0] /= texcoord[3];
|
|
texcoord[1] /= texcoord[3];
|
|
texcoord[2] /= texcoord[3];
|
|
fetch_texel( ctx, texcoord, inst->TexSrcUnit,
|
|
inst->TexSrcIndex, color );
|
|
store_vector4( inst, machine, color );
|
|
}
|
|
break;
|
|
case FP_OPCODE_UP2H: /* unpack two 16-bit floats */
|
|
/* XXX this is probably wrong */
|
|
{
|
|
GLfloat a[4], result[4];
|
|
const GLuint *rawBits = (const GLuint *) a;
|
|
GLuint *rawResult = (GLuint *) result;
|
|
fetch_vector1( &inst->SrcReg[0], machine, a );
|
|
rawResult[0] = rawBits[0] & 0xffff;
|
|
rawResult[1] = (rawBits[0] >> 16) & 0xffff;
|
|
rawResult[2] = rawBits[0] & 0xffff;
|
|
rawResult[3] = (rawBits[0] >> 16) & 0xffff;
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_UP2US: /* unpack two GLushorts */
|
|
{
|
|
GLfloat a[4], result[4];
|
|
const GLuint *rawBits = (const GLuint *) a;
|
|
fetch_vector1( &inst->SrcReg[0], machine, a );
|
|
result[0] = (GLfloat) ((rawBits[0] >> 0) & 0xffff) / 65535.0F;
|
|
result[1] = (GLfloat) ((rawBits[0] >> 16) & 0xffff) / 65535.0F;
|
|
result[2] = result[0];
|
|
result[3] = result[1];
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_UP4B: /* unpack four GLbytes */
|
|
{
|
|
GLfloat a[4], result[4];
|
|
const GLuint *rawBits = (const GLuint *) a;
|
|
fetch_vector1( &inst->SrcReg[0], machine, a );
|
|
result[0] = (((rawBits[0] >> 0) & 0xff) - 128) / 127.0F;
|
|
result[0] = (((rawBits[0] >> 8) & 0xff) - 128) / 127.0F;
|
|
result[0] = (((rawBits[0] >> 16) & 0xff) - 128) / 127.0F;
|
|
result[0] = (((rawBits[0] >> 24) & 0xff) - 128) / 127.0F;
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_UP4UB: /* unpack four GLubytes */
|
|
{
|
|
GLfloat a[4], result[4];
|
|
const GLuint *rawBits = (const GLuint *) a;
|
|
fetch_vector1( &inst->SrcReg[0], machine, a );
|
|
result[0] = ((rawBits[0] >> 0) & 0xff) / 255.0F;
|
|
result[0] = ((rawBits[0] >> 8) & 0xff) / 255.0F;
|
|
result[0] = ((rawBits[0] >> 16) & 0xff) / 255.0F;
|
|
result[0] = ((rawBits[0] >> 24) & 0xff) / 255.0F;
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
case FP_OPCODE_X2D: /* 2-D matrix transform */
|
|
{
|
|
GLfloat a[4], b[4], c[4], result[4];
|
|
fetch_vector4( &inst->SrcReg[0], machine, a );
|
|
fetch_vector4( &inst->SrcReg[1], machine, b );
|
|
fetch_vector4( &inst->SrcReg[2], machine, c );
|
|
result[0] = a[0] + b[0] * c[0] + b[1] * c[1];
|
|
result[1] = a[1] + b[0] * c[2] + b[1] * c[3];
|
|
result[2] = a[2] + b[0] * c[0] + b[1] * c[1];
|
|
result[3] = a[3] + b[0] * c[2] + b[1] * c[3];
|
|
store_vector4( inst, machine, result );
|
|
}
|
|
break;
|
|
default:
|
|
_mesa_problem(ctx, "Bad opcode in _mesa_exec_fragment_program");
|
|
return GL_TRUE; /* return value doesn't matter */
|
|
}
|
|
}
|
|
return GL_TRUE;
|
|
}
|
|
|
|
|
|
|
|
void
|
|
_swrast_exec_nv_fragment_program( GLcontext *ctx, struct sw_span *span )
|
|
{
|
|
GLuint i;
|
|
|
|
for (i = 0; i < span->end; i++) {
|
|
if (span->array->mask[i]) {
|
|
GLfloat *wpos = ctx->FragmentProgram.Machine.Registers[0];
|
|
GLfloat *col0 = ctx->FragmentProgram.Machine.Registers[1];
|
|
GLfloat *col1 = ctx->FragmentProgram.Machine.Registers[2];
|
|
GLfloat *fogc = ctx->FragmentProgram.Machine.Registers[3];
|
|
const GLfloat *colOut = ctx->FragmentProgram.Machine.Registers[FP_OUTPUT_REG_START];
|
|
GLuint j;
|
|
|
|
/* Clear temporary registers XXX use memzero() */
|
|
_mesa_bzero(ctx->FragmentProgram.Machine.Registers +FP_TEMP_REG_START,
|
|
MAX_NV_FRAGMENT_PROGRAM_TEMPS * 4 * sizeof(GLfloat));
|
|
|
|
/*
|
|
* Load input registers - yes this is all very inefficient for now.
|
|
*/
|
|
wpos[0] = span->x + i;
|
|
wpos[1] = span->y + i;
|
|
wpos[2] = (GLfloat) span->array->z[i] / ctx->DepthMaxF;
|
|
wpos[3] = 1.0; /* XXX should be 1/w */
|
|
|
|
col0[0] = CHAN_TO_FLOAT(span->array->rgba[i][RCOMP]);
|
|
col0[1] = CHAN_TO_FLOAT(span->array->rgba[i][GCOMP]);
|
|
col0[2] = CHAN_TO_FLOAT(span->array->rgba[i][BCOMP]);
|
|
col0[3] = CHAN_TO_FLOAT(span->array->rgba[i][ACOMP]);
|
|
|
|
col1[0] = CHAN_TO_FLOAT(span->array->spec[i][RCOMP]);
|
|
col1[1] = CHAN_TO_FLOAT(span->array->spec[i][GCOMP]);
|
|
col1[2] = CHAN_TO_FLOAT(span->array->spec[i][BCOMP]);
|
|
col1[3] = CHAN_TO_FLOAT(span->array->spec[i][ACOMP]);
|
|
|
|
fogc[0] = span->array->fog[i];
|
|
fogc[1] = 0.0F;
|
|
fogc[2] = 0.0F;
|
|
fogc[3] = 0.0F;
|
|
|
|
for (j = 0; j < ctx->Const.MaxTextureCoordUnits; j++) {
|
|
if (ctx->Texture.Unit[j]._ReallyEnabled) {
|
|
COPY_4V(ctx->FragmentProgram.Machine.Registers[4 + j],
|
|
span->array->texcoords[j][i]);
|
|
}
|
|
else {
|
|
COPY_4V(ctx->FragmentProgram.Machine.Registers[4 + j],
|
|
ctx->Current.Attrib[VERT_ATTRIB_TEX0 + j]);
|
|
}
|
|
}
|
|
|
|
if (!execute_program(ctx, ctx->FragmentProgram.Current))
|
|
span->array->mask[i] = GL_FALSE; /* killed fragment */
|
|
|
|
/* Store output registers */
|
|
UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][RCOMP], colOut[0]);
|
|
UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][GCOMP], colOut[1]);
|
|
UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][BCOMP], colOut[2]);
|
|
UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][ACOMP], colOut[3]);
|
|
/* depth value */
|
|
if (ctx->FragmentProgram.Current->OutputsWritten & 2)
|
|
span->array->z[i] = IROUND(ctx->FragmentProgram.Machine.Registers[FP_OUTPUT_REG_START + 2][0] * ctx->DepthMaxF);
|
|
}
|
|
}
|
|
}
|
|
|