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author | Brian Paul <brian.paul@tungstengraphics.com> | 2003-01-14 04:57:47 +0000 |
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committer | Brian Paul <brian.paul@tungstengraphics.com> | 2003-01-14 04:57:47 +0000 |
commit | 890bcc0be3c780ade5d92566d8a79dcffd03281d (patch) | |
tree | 84945cc19cb8ef954982f91da4f200bf0b5c7e35 /src | |
parent | 610d59981a9f43fefe29b34ef19c184d28e2bef5 (diff) | |
download | external_mesa3d-890bcc0be3c780ade5d92566d8a79dcffd03281d.zip external_mesa3d-890bcc0be3c780ade5d92566d8a79dcffd03281d.tar.gz external_mesa3d-890bcc0be3c780ade5d92566d8a79dcffd03281d.tar.bz2 |
fragment program execution
Diffstat (limited to 'src')
-rw-r--r-- | src/mesa/swrast/s_nvfragprog.c | 376 | ||||
-rw-r--r-- | src/mesa/swrast/s_nvfragprog.h | 39 |
2 files changed, 415 insertions, 0 deletions
diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c new file mode 100644 index 0000000..0980b5d --- /dev/null +++ b/src/mesa/swrast/s_nvfragprog.c @@ -0,0 +1,376 @@ +/* $Id: s_nvfragprog.c,v 1.1 2003/01/14 04:57:47 brianp Exp $ */ + +/* + * Mesa 3-D graphics library + * Version: 5.1 + * + * Copyright (C) 1999-2002 Brian Paul All Rights Reserved. + * + * 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. + */ + + + +#include "glheader.h" +#include "colormac.h" +#include "context.h" +#include "nvfragprog.h" +#include "macros.h" +#include "mmath.h" + +#include "s_nvfragprog.h" + + +/** + * Fetch a 4-element float vector from the given source register. + * Apply swizzling and negating as needed. + */ +static void +fetch_vector4( const struct fp_src_register *source, + const struct fp_machine *machine, + GLfloat result[4] ) +{ + const GLfloat *src; + + /* + if (source->RelAddr) { + GLint reg = source->Register + machine->AddressReg; + if (reg < VP_PROG_REG_START || reg > VP_PROG_REG_END) + src = zero; + else + src = machine->Registers[reg]; + } + else + */ + + src = machine->Registers[source->Register]; + + result[0] = src[source->Swizzle[0]]; + result[1] = src[source->Swizzle[1]]; + result[2] = src[source->Swizzle[2]]; + result[3] = src[source->Swizzle[3]]; + + if (source->NegateBase) { + result[0] = -result[0]; + result[1] = -result[1]; + result[2] = -result[2]; + result[3] = -result[3]; + } + if (source->Abs) { + result[0] = FABSF(result[0]); + result[1] = FABSF(result[1]); + result[2] = FABSF(result[2]); + result[3] = FABSF(result[3]); + } + if (source->NegateAbs) { + result[0] = -result[0]; + result[1] = -result[1]; + result[2] = -result[2]; + result[3] = -result[3]; + } +} + + +/** + * As above, but only return result[0] element. + */ +static void +fetch_vector1( const struct fp_src_register *source, + const struct fp_machine *machine, + GLfloat result[4] ) +{ + const GLfloat *src; + + /* + if (source->RelAddr) { + GLint reg = source->Register + machine->AddressReg; + if (reg < VP_PROG_REG_START || reg > VP_PROG_REG_END) + src = zero; + else + src = machine->Registers[reg]; + } + else + */ + + src = machine->Registers[source->Register]; + + result[0] = src[source->Swizzle[0]]; + + if (source->NegateBase) { + result[0] = -result[0]; + } + if (source->Abs) { + result[0] = FABSF(result[0]); + } + if (source->NegateAbs) { + result[0] = -result[0]; + } +} + + +/* + * Test value against zero and return GT, LT, EQ or UN if NaN. + */ +static INLINE GLuint +generate_cc( float value ) +{ + if (value != value) + return COND_UN; /* NaN */ + if (value > 0.0F) + return COND_GT; + if (value < 0.0F) + return COND_LT; + return COND_EQ; +} + +/* + * Test if the ccMaskRule is satisfied by the given condition code. + * Used to mask destination writes according to the current condition codee. + */ +static INLINE GLboolean +test_cc(GLuint condCode, GLuint ccMaskRule) +{ + switch (ccMaskRule) { + case COND_EQ: return (condCode == COND_EQ); + case COND_NE: return (condCode != COND_EQ); + case COND_LT: return (condCode == COND_LT); + case COND_GE: return (condCode == COND_GT || condCode == COND_EQ); + case COND_LE: return (condCode == COND_LT || condCode == COND_EQ); + case COND_GT: return (condCode == COND_GT); + case COND_TR: return GL_TRUE; + case COND_FL: return GL_FALSE; + default: return GL_TRUE; + } +} + + +/** + * Store 4 floats into a register. + */ +static void +store_vector4( const struct fp_dst_register *dest, struct fp_machine *machine, + const GLfloat value[4], GLboolean clamp, GLboolean updateCC ) +{ + GLfloat *dstReg = machine->Registers[dest->Register]; + GLfloat clampedValue[4]; + const GLboolean *writeMask = dest->WriteMask; + GLboolean condWriteMask[4]; + + if (clamp) { + clampedValue[0] = CLAMP(value[0], 0.0F, 1.0F); + clampedValue[1] = CLAMP(value[1], 0.0F, 1.0F); + clampedValue[2] = CLAMP(value[2], 0.0F, 1.0F); + clampedValue[3] = CLAMP(value[3], 0.0F, 1.0F); + value = clampedValue; + } + + if (dest->CondMask != COND_TR) { + condWriteMask[0] = writeMask[0] + && test_cc(machine->CondCodes[dest->CondSwizzle[0]], dest->CondMask); + condWriteMask[1] = writeMask[1] + && test_cc(machine->CondCodes[dest->CondSwizzle[1]], dest->CondMask); + condWriteMask[2] = writeMask[2] + && test_cc(machine->CondCodes[dest->CondSwizzle[2]], dest->CondMask); + condWriteMask[3] = writeMask[3] + && test_cc(machine->CondCodes[dest->CondSwizzle[3]], dest->CondMask); + writeMask = condWriteMask; + } + + if (writeMask[0]) { + dstReg[0] = value[0]; + if (updateCC) + machine->CondCodes[0] = generate_cc(value[0]); + } + if (writeMask[1]) { + dstReg[1] = value[1]; + if (updateCC) + machine->CondCodes[1] = generate_cc(value[1]); + } + if (writeMask[2]) { + dstReg[2] = value[2]; + if (updateCC) + machine->CondCodes[2] = generate_cc(value[2]); + } + if (writeMask[3]) { + dstReg[3] = value[3]; + if (updateCC) + machine->CondCodes[3] = generate_cc(value[3]); + } +} + + +/** + * Execute the given vertex program + */ +static void +execute_program(GLcontext *ctx, const struct fragment_program *program) +{ + struct fp_machine *machine = &ctx->FragmentProgram.Machine; + const struct fp_instruction *inst; + + for (inst = program->Instructions; inst->Opcode != FP_OPCODE_END; inst++) { + switch (inst->Opcode) { + case FP_OPCODE_ADD: + { + 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->DstReg, machine, result, inst->Saturate, + inst->UpdateCondRegister ); + } + break; + case FP_OPCODE_COS: + { + GLfloat a[4], result[4]; + fetch_vector1( &inst->SrcReg[0], machine, a ); + result[0] = result[1] = result[2] = result[3] = cos(a[0]); + store_vector4( &inst->DstReg, machine, result, inst->Saturate, + inst->UpdateCondRegister ); + } + break; + case FP_OPCODE_DP3: + { + GLfloat a[4], b[4], result[4]; + fetch_vector4( &inst->SrcReg[0], machine, a ); + fetch_vector4( &inst->SrcReg[1], machine, b ); + result[0] = result[1] = result[2] = result[3] = + a[0] + b[0] + a[1] * b[1] + a[2] * b[2]; + store_vector4( &inst->DstReg, machine, result, inst->Saturate, + inst->UpdateCondRegister ); + } + break; + case FP_OPCODE_DP4: + { + GLfloat a[4], b[4], result[4]; + fetch_vector4( &inst->SrcReg[0], machine, a ); + fetch_vector4( &inst->SrcReg[1], machine, b ); + result[0] = result[1] = result[2] = result[3] = + a[0] + b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3]; + store_vector4( &inst->DstReg, machine, result, inst->Saturate, + inst->UpdateCondRegister ); + } + break; + case FP_OPCODE_KIL: + { + const GLuint *swizzle = inst->DstReg.CondSwizzle; + const GLuint condMask = inst->DstReg.CondMask; + if (test_cc(machine->CondCodes[swizzle[0]], condMask) || + test_cc(machine->CondCodes[swizzle[1]], condMask) || + test_cc(machine->CondCodes[swizzle[2]], condMask) || + test_cc(machine->CondCodes[swizzle[3]], condMask)) + return; + } + break; + case FP_OPCODE_LRP: + { + 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] + (1.0F - a[0]) * c[0]; + result[1] = a[1] * b[1] + (1.0F - a[1]) * c[1]; + result[2] = a[2] * b[2] + (1.0F - a[2]) * c[2]; + result[3] = a[3] * b[3] + (1.0F - a[3]) * c[3]; + store_vector4( &inst->DstReg, machine, result, inst->Saturate, + inst->UpdateCondRegister ); + } + break; + case FP_OPCODE_MOV: + { + GLfloat t[4]; + fetch_vector4( &inst->SrcReg[0], machine, t ); + store_vector4( &inst->DstReg, machine, t, inst->Saturate, + inst->UpdateCondRegister ); + } + break; + case FP_OPCODE_SEQ: + { + 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->DstReg, machine, result, inst->Saturate, + inst->UpdateCondRegister ); + } + break; + default: + _mesa_problem(ctx, "Bad opcode in _mesa_exec_fragment_program"); + return; + } + } + +} + + + +void +_swrast_exec_nv_fragment_program( GLcontext *ctx, struct sw_span *span ) +{ + GLuint i; + + for (i = 0; i < span->end; 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 */ + for (j = 0; j < MAX_NV_FRAGMENT_PROGRAM_TEMPS; j++) { + ctx->FragmentProgram.Machine.Registers[FP_TEMP_REG_START+j][0] = 0.0F; + ctx->FragmentProgram.Machine.Registers[FP_TEMP_REG_START+j][1] = 0.0F; + ctx->FragmentProgram.Machine.Registers[FP_TEMP_REG_START+j][2] = 0.0F; + ctx->FragmentProgram.Machine.Registers[FP_TEMP_REG_START+j][3] = 0.0F; + } + + /* Load input registers */ + wpos[0] = span->x + i; + wpos[1] = span->y + i; + wpos[2] = span->array->z[i]; + wpos[3] = 1.0; + + 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]; + + execute_program(ctx, ctx->FragmentProgram.Current); + + /* 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]); + } +} + diff --git a/src/mesa/swrast/s_nvfragprog.h b/src/mesa/swrast/s_nvfragprog.h new file mode 100644 index 0000000..2966df9 --- /dev/null +++ b/src/mesa/swrast/s_nvfragprog.h @@ -0,0 +1,39 @@ +/* $Id: s_nvfragprog.h,v 1.1 2003/01/14 04:57:47 brianp Exp $ */ + +/* + * Mesa 3-D graphics library + * Version: 5.1 + * + * Copyright (C) 1999-2002 Brian Paul All Rights Reserved. + * + * 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. + */ + + +#ifndef S_NVFRAGPROG_H +#define S_NVFRAGPROG_H + + +#include "swrast.h" + + +extern void +_swrast_exec_nv_fragment_program( GLcontext *ctx, struct sw_span *span ); + + +#endif |