X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fswrast%2Fs_nvfragprog.c;h=028ddc0090ddaa7bf0a73a484fd5397c06e4acbf;hb=249b451d2068c781d29a6527e152b39d08b1c877;hp=036c1870d1f806191d46867443868527cf84413c;hpb=ff1a015ca86ed4ea2ca3fdd49ed9daaae19359a2;p=mesa.git diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c index 036c1870d1f..028ddc0090d 100644 --- a/src/mesa/swrast/s_nvfragprog.c +++ b/src/mesa/swrast/s_nvfragprog.c @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 6.1 + * Version: 6.5.2 * - * Copyright (C) 1999-2004 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2006 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"), @@ -34,18 +34,67 @@ #include "glheader.h" #include "colormac.h" #include "context.h" -#include "nvfragprog.h" -#include "macros.h" +#include "program_instruction.h" #include "program.h" #include "s_nvfragprog.h" #include "s_span.h" -#include "s_texture.h" -/* if 1, print some debugging info */ +/* See comments below for info about this */ +#define LAMBDA_ZERO 1 + +/* debug predicate */ #define DEBUG_FRAG 0 + +/** + * Virtual machine state used during execution of a fragment programs. + */ +struct fp_machine +{ + GLfloat Temporaries[MAX_NV_FRAGMENT_PROGRAM_TEMPS][4]; + GLfloat Inputs[MAX_NV_FRAGMENT_PROGRAM_INPUTS][4]; + GLfloat Outputs[MAX_NV_FRAGMENT_PROGRAM_OUTPUTS][4]; + GLuint CondCodes[4]; /**< COND_* value for x/y/z/w */ + + GLuint CallStack[MAX_PROGRAM_CALL_DEPTH]; /**< For CAL/RET instructions */ + GLuint StackDepth; /**< Index/ptr to top of CallStack[] */ +}; + + +#if FEATURE_MESA_program_debug +static struct fp_machine *CurrentMachine = NULL; + +/** + * For GL_MESA_program_debug. + * Return current value (4*GLfloat) of a fragment program register. + * Called via ctx->Driver.GetFragmentProgramRegister(). + */ +void +_swrast_get_program_register(GLcontext *ctx, enum register_file file, + GLuint index, GLfloat val[4]) +{ + if (CurrentMachine) { + switch (file) { + case PROGRAM_INPUT: + COPY_4V(val, CurrentMachine->Inputs[index]); + break; + case PROGRAM_OUTPUT: + COPY_4V(val, CurrentMachine->Outputs[index]); + break; + case PROGRAM_TEMPORARY: + COPY_4V(val, CurrentMachine->Temporaries[index]); + break; + default: + _mesa_problem(NULL, + "bad register file in _swrast_get_program_register"); + } + } +} +#endif /* FEATURE_MESA_program_debug */ + + /** * Fetch a texel. */ @@ -57,7 +106,7 @@ fetch_texel( GLcontext *ctx, const GLfloat texcoord[4], GLfloat lambda, SWcontext *swrast = SWRAST_CONTEXT(ctx); /* XXX use a float-valued TextureSample routine here!!! */ - swrast->TextureSample[unit](ctx, unit, ctx->Texture.Unit[unit]._Current, + swrast->TextureSample[unit](ctx, ctx->Texture.Unit[unit]._Current, 1, (const GLfloat (*)[4]) texcoord, &lambda, &rgba); color[0] = CHAN_TO_FLOAT(rgba[0]); @@ -90,7 +139,7 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4], texcoord[0], texcoord[1], texcoord[3], 1.0F / texcoord[3]); - swrast->TextureSample[unit](ctx, unit, ctx->Texture.Unit[unit]._Current, + swrast->TextureSample[unit](ctx, ctx->Texture.Unit[unit]._Current, 1, (const GLfloat (*)[4]) texcoord, &lambda, &rgba); color[0] = CHAN_TO_FLOAT(rgba[0]); @@ -106,41 +155,39 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4], */ static INLINE const GLfloat * get_register_pointer( GLcontext *ctx, - const struct fp_src_register *source, + const struct prog_src_register *source, const struct fp_machine *machine, - const struct fragment_program *program ) + const struct gl_fragment_program *program ) { - const GLfloat *src; switch (source->File) { - case PROGRAM_TEMPORARY: - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_TEMPS); - src = machine->Temporaries[source->Index]; - break; - case PROGRAM_INPUT: - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_INPUTS); - src = machine->Inputs[source->Index]; - break; - case PROGRAM_LOCAL_PARAM: - ASSERT(source->Index < MAX_PROGRAM_LOCAL_PARAMS); - src = program->Base.LocalParams[source->Index]; - break; - case PROGRAM_ENV_PARAM: - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_PARAMS); - src = ctx->FragmentProgram.Parameters[source->Index]; - break; - - case PROGRAM_STATE_VAR: - /* Fallthrough */ - - case PROGRAM_NAMED_PARAM: - ASSERT(source->Index < (GLint) program->Parameters->NumParameters); - src = program->Parameters->Parameters[source->Index].Values; - break; - default: - _mesa_problem(ctx, "Invalid input register file in fetch_vector4"); - src = NULL; + case PROGRAM_TEMPORARY: + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_TEMPS); + return machine->Temporaries[source->Index]; + case PROGRAM_INPUT: + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_INPUTS); + return machine->Inputs[source->Index]; + case PROGRAM_OUTPUT: + /* This is only for PRINT */ + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_OUTPUTS); + return machine->Outputs[source->Index]; + case PROGRAM_LOCAL_PARAM: + ASSERT(source->Index < MAX_PROGRAM_LOCAL_PARAMS); + return program->Base.LocalParams[source->Index]; + case PROGRAM_ENV_PARAM: + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_PARAMS); + return ctx->FragmentProgram.Parameters[source->Index]; + case PROGRAM_STATE_VAR: + /* Fallthrough */ + case PROGRAM_CONSTANT: + /* Fallthrough */ + case PROGRAM_NAMED_PARAM: + ASSERT(source->Index < (GLint) program->Base.Parameters->NumParameters); + return program->Base.Parameters->ParameterValues[source->Index]; + default: + _mesa_problem(ctx, "Invalid input register file %d in fp " + "get_register_pointer", source->File); + return NULL; } - return src; } @@ -150,18 +197,25 @@ get_register_pointer( GLcontext *ctx, */ static void fetch_vector4( GLcontext *ctx, - const struct fp_src_register *source, + const struct prog_src_register *source, const struct fp_machine *machine, - const struct fragment_program *program, + const struct gl_fragment_program *program, GLfloat result[4] ) { const GLfloat *src = get_register_pointer(ctx, source, machine, program); ASSERT(src); - 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->Swizzle == MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, + SWIZZLE_Z, SWIZZLE_W)) { + /* no swizzling */ + COPY_4V(result, src); + } + else { + result[0] = src[GET_SWZ(source->Swizzle, 0)]; + result[1] = src[GET_SWZ(source->Swizzle, 1)]; + result[2] = src[GET_SWZ(source->Swizzle, 2)]; + result[3] = src[GET_SWZ(source->Swizzle, 3)]; + } if (source->NegateBase) { result[0] = -result[0]; @@ -191,8 +245,8 @@ fetch_vector4( GLcontext *ctx, */ static GLboolean fetch_vector4_deriv( GLcontext *ctx, - const struct fp_src_register *source, - const struct sw_span *span, + const struct prog_src_register *source, + const SWspan *span, char xOrY, GLint column, GLfloat result[4] ) { GLfloat src[4]; @@ -204,13 +258,13 @@ fetch_vector4_deriv( GLcontext *ctx, if (xOrY == 'X') { src[0] = 1.0; src[1] = 0.0; - src[2] = span->dzdx / ctx->DepthMaxF; + src[2] = span->dzdx / ctx->DrawBuffer->_DepthMaxF; src[3] = span->dwdx; } else { src[0] = 0.0; src[1] = 1.0; - src[2] = span->dzdy / ctx->DepthMaxF; + src[2] = span->dzdy / ctx->DrawBuffer->_DepthMaxF; src[3] = span->dwdy; } break; @@ -288,10 +342,10 @@ fetch_vector4_deriv( GLcontext *ctx, return GL_FALSE; } - result[0] = src[source->Swizzle[0]]; - result[1] = src[source->Swizzle[1]]; - result[2] = src[source->Swizzle[2]]; - result[3] = src[source->Swizzle[3]]; + result[0] = src[GET_SWZ(source->Swizzle, 0)]; + result[1] = src[GET_SWZ(source->Swizzle, 1)]; + result[2] = src[GET_SWZ(source->Swizzle, 2)]; + result[3] = src[GET_SWZ(source->Swizzle, 3)]; if (source->NegateBase) { result[0] = -result[0]; @@ -320,15 +374,15 @@ fetch_vector4_deriv( GLcontext *ctx, */ static void fetch_vector1( GLcontext *ctx, - const struct fp_src_register *source, + const struct prog_src_register *source, const struct fp_machine *machine, - const struct fragment_program *program, + const struct gl_fragment_program *program, GLfloat result[4] ) { const GLfloat *src = get_register_pointer(ctx, source, machine, program); ASSERT(src); - result[0] = src[source->Swizzle[0]]; + result[0] = src[GET_SWZ(source->Swizzle, 0)]; if (source->NegateBase) { result[0] = -result[0]; @@ -342,7 +396,7 @@ fetch_vector1( GLcontext *ctx, } -/* +/** * Test value against zero and return GT, LT, EQ or UN if NaN. */ static INLINE GLuint @@ -357,9 +411,10 @@ generate_cc( float value ) 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. + * Used to mask destination writes according to the current condition code. */ static INLINE GLboolean test_cc(GLuint condCode, GLuint ccMaskRule) @@ -383,17 +438,16 @@ test_cc(GLuint condCode, GLuint ccMaskRule) * set-condition-code flags. */ static void -store_vector4( const struct fp_instruction *inst, +store_vector4( const struct prog_instruction *inst, struct fp_machine *machine, const GLfloat value[4] ) { - const struct fp_dst_register *dest = &(inst->DstReg); - const GLboolean clamp = inst->Saturate; - const GLboolean updateCC = inst->UpdateCondRegister; + const struct prog_dst_register *dest = &(inst->DstReg); + const GLboolean clamp = inst->SaturateMode == SATURATE_ZERO_ONE; GLfloat *dstReg; + GLfloat dummyReg[4]; GLfloat clampedValue[4]; - const GLboolean *writeMask = dest->WriteMask; - GLboolean condWriteMask[4]; + GLuint writeMask = dest->WriteMask; switch (dest->File) { case PROGRAM_OUTPUT: @@ -402,12 +456,15 @@ store_vector4( const struct fp_instruction *inst, case PROGRAM_TEMPORARY: dstReg = machine->Temporaries[dest->Index]; break; + case PROGRAM_WRITE_ONLY: + dstReg = dummyReg; + return; default: _mesa_problem(NULL, "bad register file in store_vector4(fp)"); return; } -#if DEBUG_FRAG +#if 0 if (value[0] > 1.0e10 || IS_INF_OR_NAN(value[0]) || IS_INF_OR_NAN(value[1]) || @@ -425,35 +482,46 @@ store_vector4( const struct fp_instruction *inst, } 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; + /* condition codes may turn off some writes */ + if (writeMask & WRITEMASK_X) { + if (!test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 0)], + dest->CondMask)) + writeMask &= ~WRITEMASK_X; + } + if (writeMask & WRITEMASK_Y) { + if (!test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 1)], + dest->CondMask)) + writeMask &= ~WRITEMASK_Y; + } + if (writeMask & WRITEMASK_Z) { + if (!test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 2)], + dest->CondMask)) + writeMask &= ~WRITEMASK_Z; + } + if (writeMask & WRITEMASK_W) { + if (!test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 3)], + dest->CondMask)) + writeMask &= ~WRITEMASK_W; + } } - if (writeMask[0]) { + if (writeMask & WRITEMASK_X) dstReg[0] = value[0]; - if (updateCC) - machine->CondCodes[0] = generate_cc(value[0]); - } - if (writeMask[1]) { + if (writeMask & WRITEMASK_Y) dstReg[1] = value[1]; - if (updateCC) - machine->CondCodes[1] = generate_cc(value[1]); - } - if (writeMask[2]) { + if (writeMask & WRITEMASK_Z) dstReg[2] = value[2]; - if (updateCC) - machine->CondCodes[2] = generate_cc(value[2]); - } - if (writeMask[3]) { + if (writeMask & WRITEMASK_W) dstReg[3] = value[3]; - if (updateCC) + + if (inst->CondUpdate) { + if (writeMask & WRITEMASK_X) + machine->CondCodes[0] = generate_cc(value[0]); + if (writeMask & WRITEMASK_Y) + machine->CondCodes[1] = generate_cc(value[1]); + if (writeMask & WRITEMASK_Z) + machine->CondCodes[2] = generate_cc(value[2]); + if (writeMask & WRITEMASK_W) machine->CondCodes[3] = generate_cc(value[3]); } } @@ -467,8 +535,8 @@ store_vector4( const struct fp_instruction *inst, static void init_machine_deriv( GLcontext *ctx, const struct fp_machine *machine, - const struct fragment_program *program, - const struct sw_span *span, char xOrY, + const struct gl_fragment_program *program, + const SWspan *span, char xOrY, struct fp_machine *dMachine ) { GLuint u; @@ -478,12 +546,14 @@ init_machine_deriv( GLcontext *ctx, /* copy existing machine */ _mesa_memcpy(dMachine, machine, sizeof(struct fp_machine)); - /* Clear temporary registers */ - _mesa_bzero( (void*) machine->Temporaries, - MAX_NV_FRAGMENT_PROGRAM_TEMPS * 4 * sizeof(GLfloat)); + if (program->Base.Target == GL_FRAGMENT_PROGRAM_NV) { + /* Clear temporary registers (undefined for ARB_f_p) */ + _mesa_bzero( (void*) machine->Temporaries, + MAX_NV_FRAGMENT_PROGRAM_TEMPS * 4 * sizeof(GLfloat)); + } /* Add derivatives */ - if (program->InputsRead & (1 << FRAG_ATTRIB_WPOS)) { + if (program->Base.InputsRead & (1 << FRAG_ATTRIB_WPOS)) { GLfloat *wpos = (GLfloat*) machine->Inputs[FRAG_ATTRIB_WPOS]; if (xOrY == 'X') { wpos[0] += 1.0F; @@ -498,7 +568,7 @@ init_machine_deriv( GLcontext *ctx, wpos[3] += span->dwdy; } } - if (program->InputsRead & (1 << FRAG_ATTRIB_COL0)) { + if (program->Base.InputsRead & (1 << FRAG_ATTRIB_COL0)) { GLfloat *col0 = (GLfloat*) machine->Inputs[FRAG_ATTRIB_COL0]; if (xOrY == 'X') { col0[0] += span->drdx * (1.0F / CHAN_MAXF); @@ -513,7 +583,7 @@ init_machine_deriv( GLcontext *ctx, col0[3] += span->dady * (1.0F / CHAN_MAXF); } } - if (program->InputsRead & (1 << FRAG_ATTRIB_COL1)) { + if (program->Base.InputsRead & (1 << FRAG_ATTRIB_COL1)) { GLfloat *col1 = (GLfloat*) machine->Inputs[FRAG_ATTRIB_COL1]; if (xOrY == 'X') { col1[0] += span->dsrdx * (1.0F / CHAN_MAXF); @@ -528,7 +598,7 @@ init_machine_deriv( GLcontext *ctx, col1[3] += 0.0; /*XXX fix */ } } - if (program->InputsRead & (1 << FRAG_ATTRIB_FOGC)) { + if (program->Base.InputsRead & (1 << FRAG_ATTRIB_FOGC)) { GLfloat *fogc = (GLfloat*) machine->Inputs[FRAG_ATTRIB_FOGC]; if (xOrY == 'X') { fogc[0] += span->dfogdx; @@ -538,7 +608,7 @@ init_machine_deriv( GLcontext *ctx, } } for (u = 0; u < ctx->Const.MaxTextureCoordUnits; u++) { - if (program->InputsRead & (1 << (FRAG_ATTRIB_TEX0 + u))) { + if (program->Base.InputsRead & (1 << (FRAG_ATTRIB_TEX0 + u))) { GLfloat *tex = (GLfloat*) machine->Inputs[FRAG_ATTRIB_TEX0 + u]; /* XXX perspective-correct interpolation */ if (xOrY == 'X') { @@ -576,18 +646,18 @@ init_machine_deriv( GLcontext *ctx, */ static GLboolean execute_program( GLcontext *ctx, - const struct fragment_program *program, GLuint maxInst, - struct fp_machine *machine, const struct sw_span *span, + const struct gl_fragment_program *program, GLuint maxInst, + struct fp_machine *machine, const SWspan *span, GLuint column ) { GLuint pc; -#if DEBUG_FRAG - printf("execute fragment program --------------------\n"); -#endif + if (DEBUG_FRAG) { + printf("execute fragment program --------------------\n"); + } for (pc = 0; pc < maxInst; pc++) { - const struct fp_instruction *inst = program->Instructions + pc; + const struct prog_instruction *inst = program->Base.Instructions + pc; if (ctx->FragmentProgram.CallbackEnabled && ctx->FragmentProgram.Callback) { @@ -596,8 +666,12 @@ execute_program( GLcontext *ctx, ctx->FragmentProgram.CallbackData); } + if (DEBUG_FRAG) { + _mesa_print_instruction(inst); + } + switch (inst->Opcode) { - case FP_OPCODE_ABS: + case OPCODE_ABS: { GLfloat a[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -608,7 +682,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_ADD: + case OPCODE_ADD: { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -618,9 +692,46 @@ execute_program( GLcontext *ctx, result[2] = a[2] + b[2]; result[3] = a[3] + b[3]; store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("ADD (%g %g %g %g) = (%g %g %g %g) + (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3]); + } + } + break; + case OPCODE_BRA: /* conditional branch */ + { + /* NOTE: The return is conditional! */ + const GLuint swizzle = inst->DstReg.CondSwizzle; + const GLuint condMask = inst->DstReg.CondMask; + if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) { + /* take branch */ + pc = inst->BranchTarget; + } } break; - case FP_OPCODE_CMP: + case OPCODE_CAL: /* Call subroutine */ + { + /* NOTE: The call is conditional! */ + const GLuint swizzle = inst->DstReg.CondSwizzle; + const GLuint condMask = inst->DstReg.CondMask; + if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) { + if (machine->StackDepth >= MAX_PROGRAM_CALL_DEPTH) { + return GL_TRUE; /* Per GL_NV_vertex_program2 spec */ + } + machine->CallStack[machine->StackDepth++] = pc + 1; + pc = inst->BranchTarget; + } + } + break; + case OPCODE_CMP: { GLfloat a[4], b[4], c[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -633,15 +744,16 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_COS: + case OPCODE_COS: { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); - result[0] = result[1] = result[2] = result[3] = (GLfloat)_mesa_cos(a[0]); + result[0] = result[1] = result[2] = result[3] + = (GLfloat) _mesa_cos(a[0]); store_vector4( inst, machine, result ); } break; - case FP_OPCODE_DDX: /* Partial derivative with respect to X */ + case OPCODE_DDX: /* Partial derivative with respect to X */ { GLfloat a[4], aNext[4], result[4]; struct fp_machine dMachine; @@ -667,7 +779,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_DDY: /* Partial derivative with respect to Y */ + case OPCODE_DDY: /* Partial derivative with respect to Y */ { GLfloat a[4], aNext[4], result[4]; struct fp_machine dMachine; @@ -686,31 +798,34 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_DP3: + case OPCODE_DP3: { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b ); - result[0] = result[1] = result[2] = result[3] = - a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; + result[0] = result[1] = result[2] = result[3] = DOT3(a, b); store_vector4( inst, machine, result ); -#if DEBUG_FRAG - printf("DP3 %g = (%g %g %g) . (%g %g %g)\n", - result[0], a[0], a[1], a[2], b[0], b[1], b[2]); -#endif + if (DEBUG_FRAG) { + printf("DP3 %g = (%g %g %g) . (%g %g %g)\n", + result[0], a[0], a[1], a[2], b[0], b[1], b[2]); + } } break; - case FP_OPCODE_DP4: + case OPCODE_DP4: { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); fetch_vector4( ctx, &inst->SrcReg[1], machine, program, 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]; + result[0] = result[1] = result[2] = result[3] = DOT4(a,b); store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("DP4 %g = (%g, %g %g %g) . (%g, %g %g %g)\n", + result[0], a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3]); + } } break; - case FP_OPCODE_DPH: + case OPCODE_DPH: { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -720,7 +835,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_DST: /* Distance vector */ + case OPCODE_DST: /* Distance vector */ { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -732,7 +847,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_EX2: /* Exponential base 2 */ + case OPCODE_EX2: /* Exponential base 2 */ { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); @@ -741,7 +856,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_FLR: + case OPCODE_FLR: { GLfloat a[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -752,7 +867,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_FRC: + case OPCODE_FRC: { GLfloat a[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -763,19 +878,19 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_KIL_NV: /* NV_f_p only */ + case OPCODE_KIL_NV: /* NV_f_p only */ { - const GLuint *swizzle = inst->DstReg.CondSwizzle; + 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)) { + if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) { return GL_FALSE; } } break; - case FP_OPCODE_KIL: /* ARB_f_p only */ + case OPCODE_KIL: /* ARB_f_p only */ { GLfloat a[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -784,31 +899,45 @@ execute_program( GLcontext *ctx, } } break; - case FP_OPCODE_LG2: /* log base 2 */ + case OPCODE_LG2: /* log base 2 */ { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); - result[0] = result[1] = result[2] = result[3] - = LOG2(a[0]); + result[0] = result[1] = result[2] = result[3] = LOG2(a[0]); store_vector4( inst, machine, result ); } break; - case FP_OPCODE_LIT: + case OPCODE_LIT: { + const GLfloat epsilon = 1.0F / 256.0F; /* from NV VP spec */ GLfloat a[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); - if (a[0] < 0.0F) - a[0] = 0.0F; - if (a[1] < 0.0F) - a[1] = 0.0F; + a[0] = MAX2(a[0], 0.0F); + a[1] = MAX2(a[1], 0.0F); + /* XXX ARB version clamps a[3], NV version doesn't */ + a[3] = CLAMP(a[3], -(128.0F - epsilon), (128.0F - epsilon)); result[0] = 1.0F; result[1] = a[0]; - result[2] = (a[0] > 0.0F) ? (GLfloat) exp(a[3] * log(a[1])) : 0.0F; + /* XXX we could probably just use pow() here */ + if (a[0] > 0.0F) { + if (a[1] == 0.0 && a[3] == 0.0) + result[2] = 1.0; + else + result[2] = EXPF(a[3] * LOGF(a[1])); + } + else { + result[2] = 0.0; + } result[3] = 1.0F; store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("LIT (%g %g %g %g) : (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3]); + } } break; - case FP_OPCODE_LRP: + case OPCODE_LRP: { GLfloat a[4], b[4], c[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -819,9 +948,17 @@ execute_program( GLcontext *ctx, 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, machine, result ); + if (DEBUG_FRAG) { + printf("LRP (%g %g %g %g) = (%g %g %g %g), " + "(%g %g %g %g), (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3], + c[0], c[1], c[2], c[3]); + } } break; - case FP_OPCODE_MAD: + case OPCODE_MAD: { GLfloat a[4], b[4], c[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -832,9 +969,17 @@ execute_program( GLcontext *ctx, result[2] = a[2] * b[2] + c[2]; result[3] = a[3] * b[3] + c[3]; store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("MAD (%g %g %g %g) = (%g %g %g %g) * " + "(%g %g %g %g) + (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3], + c[0], c[1], c[2], c[3]); + } } break; - case FP_OPCODE_MAX: + case OPCODE_MAX: { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -844,9 +989,15 @@ execute_program( GLcontext *ctx, result[2] = MAX2(a[2], b[2]); result[3] = MAX2(a[3], b[3]); store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("MAX (%g %g %g %g) = (%g %g %g %g), (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3]); + } } break; - case FP_OPCODE_MIN: + case OPCODE_MIN: { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -858,14 +1009,18 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_MOV: + case OPCODE_MOV: { GLfloat result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, result ); store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("MOV (%g %g %g %g)\n", + result[0], result[1], result[2], result[3]); + } } break; - case FP_OPCODE_MUL: + case OPCODE_MUL: { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -875,15 +1030,15 @@ execute_program( GLcontext *ctx, result[2] = a[2] * b[2]; result[3] = a[3] * b[3]; store_vector4( inst, machine, result ); -#if DEBUG_FRAG - printf("MUL (%g %g %g %g) = (%g %g %g %g) * (%g %g %g %g)\n", - result[0], result[1], result[2], result[3], - a[0], a[1], a[2], a[3], - b[0], b[1], b[2], b[3]); -#endif + if (DEBUG_FRAG) { + printf("MUL (%g %g %g %g) = (%g %g %g %g) * (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3]); + } } break; - case FP_OPCODE_PK2H: /* pack two 16-bit floats in one 32-bit float */ + case OPCODE_PK2H: /* pack two 16-bit floats in one 32-bit float */ { GLfloat a[4], result[4]; GLhalfNV hx, hy; @@ -898,7 +1053,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_PK2US: /* pack two GLushorts into one 32-bit float */ + case OPCODE_PK2US: /* pack two GLushorts into one 32-bit float */ { GLfloat a[4], result[4]; GLuint usx, usy, *rawResult = (GLuint *) result; @@ -912,7 +1067,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_PK4B: /* pack four GLbytes into one 32-bit float */ + case OPCODE_PK4B: /* pack four GLbytes into one 32-bit float */ { GLfloat a[4], result[4]; GLuint ubx, uby, ubz, ubw, *rawResult = (GLuint *) result; @@ -930,7 +1085,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_PK4UB: /* pack four GLubytes into one 32-bit float */ + case OPCODE_PK4UB: /* pack four GLubytes into one 32-bit float */ { GLfloat a[4], result[4]; GLuint ubx, uby, ubz, ubw, *rawResult = (GLuint *) result; @@ -948,7 +1103,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_POW: + case OPCODE_POW: { GLfloat a[4], b[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); @@ -958,62 +1113,74 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_RCP: + case OPCODE_RCP: { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); -#if DEBUG_FRAG - if (a[0] == 0) - printf("RCP(0)\n"); - else if (IS_INF_OR_NAN(a[0])) - printf("RCP(inf)\n"); -#endif - result[0] = result[1] = result[2] = result[3] - = 1.0F / a[0]; + if (DEBUG_FRAG) { + if (a[0] == 0) + printf("RCP(0)\n"); + else if (IS_INF_OR_NAN(a[0])) + printf("RCP(inf)\n"); + } + result[0] = result[1] = result[2] = result[3] = 1.0F / a[0]; store_vector4( inst, machine, result ); } break; - case FP_OPCODE_RFL: + case OPCODE_RET: /* return from subroutine */ { - GLfloat axis[4], dir[4], result[4], tmp[4]; + /* NOTE: The return is conditional! */ + const GLuint swizzle = inst->DstReg.CondSwizzle; + const GLuint condMask = inst->DstReg.CondMask; + if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) { + if (machine->StackDepth == 0) { + return GL_TRUE; /* Per GL_NV_vertex_program2 spec */ + } + pc = machine->CallStack[--machine->StackDepth]; + } + } + break; + case OPCODE_RFL: /* reflection vector */ + { + GLfloat axis[4], dir[4], result[4], tmpX, tmpW; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, axis ); fetch_vector4( ctx, &inst->SrcReg[1], machine, program, 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]; + tmpW = DOT3(axis, axis); + tmpX = (2.0F * DOT3(axis, dir)) / tmpW; + result[0] = tmpX * axis[0] - dir[0]; + result[1] = tmpX * axis[1] - dir[1]; + result[2] = tmpX * 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() */ + case OPCODE_RSQ: /* 1 / sqrt() */ { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); + a[0] = FABSF(a[0]); result[0] = result[1] = result[2] = result[3] = INV_SQRTF(a[0]); store_vector4( inst, machine, result ); -#if DEBUG_FRAG - printf("RSQ %g = 1/sqrt(%g)\n", result[0], a[0]); -#endif + if (DEBUG_FRAG) { + printf("RSQ %g = 1/sqrt(|%g|)\n", result[0], a[0]); + } } break; - case FP_OPCODE_SCS: /* sine and cos */ + case OPCODE_SCS: /* sine and cos */ { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); - result[0] = (GLfloat)cos(a[0]); - result[1] = (GLfloat)sin(a[0]); + result[0] = (GLfloat)_mesa_cos(a[0]); + result[1] = (GLfloat)_mesa_sin(a[0]); result[2] = 0.0; /* undefined! */ result[3] = 0.0; /* undefined! */ store_vector4( inst, machine, result ); } break; - case FP_OPCODE_SEQ: /* set on equal */ + case OPCODE_SEQ: /* set on equal */ { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -1025,13 +1192,13 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_SFL: /* set false, operands ignored */ + case 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 */ + case OPCODE_SGE: /* set on greater or equal */ { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -1043,7 +1210,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_SGT: /* set on greater */ + case OPCODE_SGT: /* set on greater */ { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -1055,16 +1222,16 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_SIN: + case OPCODE_SIN: { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); - result[0] = result[1] = result[2] = - result[3] = (GLfloat)_mesa_sin(a[0]); + result[0] = result[1] = result[2] = result[3] + = (GLfloat) _mesa_sin(a[0]); store_vector4( inst, machine, result ); } break; - case FP_OPCODE_SLE: /* set on less or equal */ + case OPCODE_SLE: /* set on less or equal */ { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -1076,7 +1243,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_SLT: /* set on less */ + case OPCODE_SLT: /* set on less */ { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -1088,7 +1255,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_SNE: /* set on not equal */ + case OPCODE_SNE: /* set on not equal */ { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -1100,13 +1267,13 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_STR: /* set true, operands ignored */ + case 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: + case OPCODE_SUB: { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -1116,59 +1283,85 @@ execute_program( GLcontext *ctx, result[2] = a[2] - b[2]; result[3] = a[3] - b[3]; store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("SUB (%g %g %g %g) = (%g %g %g %g) - (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], b[0], b[1], b[2], b[3]); + } } break; - case FP_OPCODE_SWZ: + case OPCODE_SWZ: /* extended swizzle */ { - const struct fp_src_register *source = &inst->SrcReg[0]; + const struct prog_src_register *source = &inst->SrcReg[0]; const GLfloat *src = get_register_pointer(ctx, source, machine, program); GLfloat result[4]; GLuint i; - - /* do extended swizzling here */ - for (i = 0; i < 3; i++) { - if (source->Swizzle[i] == SWIZZLE_ZERO) + for (i = 0; i < 4; i++) { + const GLuint swz = GET_SWZ(source->Swizzle, i); + if (swz == SWIZZLE_ZERO) result[i] = 0.0; - else if (source->Swizzle[i] == SWIZZLE_ONE) - result[i] = -1.0; - else - result[i] = -src[source->Swizzle[i]]; - if (source->NegateBase) + else if (swz == SWIZZLE_ONE) + result[i] = 1.0; + else { + ASSERT(swz >= 0); + ASSERT(swz <= 3); + result[i] = src[swz]; + } + if (source->NegateBase & (1 << i)) result[i] = -result[i]; } store_vector4( inst, machine, result ); } break; - case FP_OPCODE_TEX: + case OPCODE_TEX: /* Both ARB and NV frag prog */ /* Texel lookup */ { - GLfloat texcoord[4], color[4]; - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord ); - /* XXX: Undo perspective divide from interpolate_texcoords() */ - fetch_texel( ctx, texcoord, - span->array->lambda[inst->TexSrcUnit][column], - inst->TexSrcUnit, color ); + /* Note: only use the precomputed lambda value when we're + * sampling texture unit [K] with texcoord[K]. + * Otherwise, the lambda value may have no relation to the + * instruction's texcoord or texture image. Using the wrong + * lambda is usually bad news. + * The rest of the time, just use zero (until we get a more + * sophisticated way of computing lambda). + */ + GLfloat coord[4], color[4], lambda; + if (inst->SrcReg[0].File == PROGRAM_INPUT && + inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0+inst->TexSrcUnit) + lambda = span->array->lambda[inst->TexSrcUnit][column]; + else + lambda = 0.0; + fetch_vector4(ctx, &inst->SrcReg[0], machine, program, coord); + fetch_texel( ctx, coord, lambda, inst->TexSrcUnit, color ); + if (DEBUG_FRAG) { + printf("TEX (%g, %g, %g, %g) = texture[%d][%g, %g, %g, %g], " + "lod %f\n", + color[0], color[1], color[2], color[3], + inst->TexSrcUnit, + coord[0], coord[1], coord[2], coord[3], lambda); + } store_vector4( inst, machine, color ); } break; - case FP_OPCODE_TXB: + case OPCODE_TXB: /* GL_ARB_fragment_program only */ /* Texel lookup with LOD bias */ { - GLfloat texcoord[4], color[4], bias, lambda; - - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord ); - /* texcoord[3] is the bias to add to lambda */ + GLfloat coord[4], color[4], lambda, bias; + if (inst->SrcReg[0].File == PROGRAM_INPUT && + inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0+inst->TexSrcUnit) + lambda = span->array->lambda[inst->TexSrcUnit][column]; + else + lambda = 0.0; + fetch_vector4(ctx, &inst->SrcReg[0], machine, program, coord); + /* coord[3] is the bias to add to lambda */ bias = ctx->Texture.Unit[inst->TexSrcUnit].LodBias + ctx->Texture.Unit[inst->TexSrcUnit]._Current->LodBias - + texcoord[3]; - lambda = span->array->lambda[inst->TexSrcUnit][column] + bias; - fetch_texel( ctx, texcoord, lambda, - inst->TexSrcUnit, color ); + + coord[3]; + fetch_texel(ctx, coord, lambda + bias, inst->TexSrcUnit, color); store_vector4( inst, machine, color ); } break; - case FP_OPCODE_TXD: + case OPCODE_TXD: /* GL_NV_fragment_program only */ /* Texture lookup w/ partial derivatives for LOD */ { GLfloat texcoord[4], dtdx[4], dtdy[4], color[4]; @@ -1180,19 +1373,50 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, color ); } break; - case FP_OPCODE_TXP: - /* Texture lookup w/ perspective divide */ + case OPCODE_TXP: /* GL_ARB_fragment_program only */ + /* Texture lookup w/ projective divide */ { - GLfloat texcoord[4], color[4]; - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord ); - /* Already did perspective divide in interpolate_texcoords() */ - fetch_texel( ctx, texcoord, - span->array->lambda[inst->TexSrcUnit][column], - inst->TexSrcUnit, color ); + GLfloat texcoord[4], color[4], lambda; + if (inst->SrcReg[0].File == PROGRAM_INPUT && + inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0+inst->TexSrcUnit) + lambda = span->array->lambda[inst->TexSrcUnit][column]; + else + lambda = 0.0; + fetch_vector4(ctx, &inst->SrcReg[0], machine, program,texcoord); + /* Not so sure about this test - if texcoord[3] is + * zero, we'd probably be fine except for an ASSERT in + * IROUND_POS() which gets triggered by the inf values created. + */ + if (texcoord[3] != 0.0) { + texcoord[0] /= texcoord[3]; + texcoord[1] /= texcoord[3]; + texcoord[2] /= texcoord[3]; + } + fetch_texel( ctx, texcoord, lambda, inst->TexSrcUnit, color ); store_vector4( inst, machine, color ); } break; - case FP_OPCODE_UP2H: /* unpack two 16-bit floats */ + case OPCODE_TXP_NV: /* GL_NV_fragment_program only */ + /* Texture lookup w/ projective divide */ + { + GLfloat texcoord[4], color[4], lambda; + if (inst->SrcReg[0].File == PROGRAM_INPUT && + inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0+inst->TexSrcUnit) + lambda = span->array->lambda[inst->TexSrcUnit][column]; + else + lambda = 0.0; + fetch_vector4(ctx, &inst->SrcReg[0], machine, program,texcoord); + if (inst->TexSrcTarget != TEXTURE_CUBE_INDEX && + texcoord[3] != 0.0) { + texcoord[0] /= texcoord[3]; + texcoord[1] /= texcoord[3]; + texcoord[2] /= texcoord[3]; + } + fetch_texel( ctx, texcoord, lambda, inst->TexSrcUnit, color ); + store_vector4( inst, machine, color ); + } + break; + case OPCODE_UP2H: /* unpack two 16-bit floats */ { GLfloat a[4], result[4]; const GLuint *rawBits = (const GLuint *) a; @@ -1205,7 +1429,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_UP2US: /* unpack two GLushorts */ + case OPCODE_UP2US: /* unpack two GLushorts */ { GLfloat a[4], result[4]; const GLuint *rawBits = (const GLuint *) a; @@ -1218,7 +1442,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_UP4B: /* unpack four GLbytes */ + case OPCODE_UP4B: /* unpack four GLbytes */ { GLfloat a[4], result[4]; const GLuint *rawBits = (const GLuint *) a; @@ -1230,7 +1454,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_UP4UB: /* unpack four GLubytes */ + case OPCODE_UP4UB: /* unpack four GLubytes */ { GLfloat a[4], result[4]; const GLuint *rawBits = (const GLuint *) a; @@ -1242,7 +1466,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_XPD: /* cross product */ + case OPCODE_XPD: /* cross product */ { GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -1254,7 +1478,7 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_X2D: /* 2-D matrix transform */ + case OPCODE_X2D: /* 2-D matrix transform */ { GLfloat a[4], b[4], c[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); @@ -1267,7 +1491,20 @@ execute_program( GLcontext *ctx, store_vector4( inst, machine, result ); } break; - case FP_OPCODE_END: + case OPCODE_PRINT: + { + if (inst->SrcReg[0].File != -1) { + GLfloat a[4]; + fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a); + _mesa_printf("%s%g, %g, %g, %g\n", (const char *) inst->Data, + a[0], a[1], a[2], a[3]); + } + else { + _mesa_printf("%s\n", (const char *) inst->Data); + } + } + break; + case OPCODE_END: return GL_TRUE; default: _mesa_problem(ctx, "Bad opcode %d in _mesa_exec_fragment_program", @@ -1279,45 +1516,60 @@ execute_program( GLcontext *ctx, } +/** + * Initialize the virtual fragment program machine state prior to running + * fragment program on a fragment. This involves initializing the input + * registers, condition codes, etc. + * \param machine the virtual machine state to init + * \param program the fragment program we're about to run + * \param span the span of pixels we'll operate on + * \param col which element (column) of the span we'll operate on + */ static void init_machine( GLcontext *ctx, struct fp_machine *machine, - const struct fragment_program *program, - const struct sw_span *span, GLuint col ) + const struct gl_fragment_program *program, + const SWspan *span, GLuint col ) { - GLuint inputsRead = program->InputsRead; + GLuint inputsRead = program->Base.InputsRead; GLuint u; if (ctx->FragmentProgram.CallbackEnabled) inputsRead = ~0; - /* Clear temporary registers */ - _mesa_bzero(machine->Temporaries, - MAX_NV_FRAGMENT_PROGRAM_TEMPS * 4 * sizeof(GLfloat)); + if (program->Base.Target == GL_FRAGMENT_PROGRAM_NV) { + /* Clear temporary registers (undefined for ARB_f_p) */ + _mesa_bzero(machine->Temporaries, + MAX_NV_FRAGMENT_PROGRAM_TEMPS * 4 * sizeof(GLfloat)); + } /* Load input registers */ if (inputsRead & (1 << FRAG_ATTRIB_WPOS)) { GLfloat *wpos = machine->Inputs[FRAG_ATTRIB_WPOS]; - wpos[0] = (GLfloat) span->x + col; - wpos[1] = (GLfloat) span->y; - wpos[2] = (GLfloat) span->array->z[col] / ctx->DepthMaxF; + ASSERT(span->arrayMask & SPAN_Z); + if (span->arrayMask & SPAN_XY) { + wpos[0] = (GLfloat) span->array->x[col]; + wpos[1] = (GLfloat) span->array->y[col]; + } + else { + wpos[0] = (GLfloat) span->x + col; + wpos[1] = (GLfloat) span->y; + } + wpos[2] = (GLfloat) span->array->z[col] / ctx->DrawBuffer->_DepthMaxF; wpos[3] = span->w + col * span->dwdx; } if (inputsRead & (1 << FRAG_ATTRIB_COL0)) { - GLfloat *col0 = machine->Inputs[FRAG_ATTRIB_COL0]; - col0[0] = CHAN_TO_FLOAT(span->array->rgba[col][RCOMP]); - col0[1] = CHAN_TO_FLOAT(span->array->rgba[col][GCOMP]); - col0[2] = CHAN_TO_FLOAT(span->array->rgba[col][BCOMP]); - col0[3] = CHAN_TO_FLOAT(span->array->rgba[col][ACOMP]); + ASSERT(span->arrayMask & SPAN_RGBA); + COPY_4V(machine->Inputs[FRAG_ATTRIB_COL0], + span->array->color.sz4.rgba[col]); } if (inputsRead & (1 << FRAG_ATTRIB_COL1)) { - GLfloat *col1 = machine->Inputs[FRAG_ATTRIB_COL1]; - col1[0] = CHAN_TO_FLOAT(span->array->spec[col][RCOMP]); - col1[1] = CHAN_TO_FLOAT(span->array->spec[col][GCOMP]); - col1[2] = CHAN_TO_FLOAT(span->array->spec[col][BCOMP]); - col1[3] = CHAN_TO_FLOAT(span->array->spec[col][ACOMP]); + ASSERT(span->arrayMask & SPAN_SPEC); + COPY_4V(machine->Inputs[FRAG_ATTRIB_COL1], + span->array->color.sz4.spec[col]); } if (inputsRead & (1 << FRAG_ATTRIB_FOGC)) { GLfloat *fogc = machine->Inputs[FRAG_ATTRIB_FOGC]; + ASSERT(span->arrayMask & SPAN_FOG); fogc[0] = span->array->fog[col]; fogc[1] = 0.0F; fogc[2] = 0.0F; @@ -1337,46 +1589,77 @@ init_machine( GLcontext *ctx, struct fp_machine *machine, machine->CondCodes[1] = COND_EQ; machine->CondCodes[2] = COND_EQ; machine->CondCodes[3] = COND_EQ; -} + /* init call stack */ + machine->StackDepth = 0; +} /** - * Execute the current fragment program, operating on the given span. + * Run fragment program on the pixels in span from 'start' to 'end' - 1. */ -void -_swrast_exec_fragment_program( GLcontext *ctx, struct sw_span *span ) +static void +run_program(GLcontext *ctx, SWspan *span, GLuint start, GLuint end) { - const struct fragment_program *program = ctx->FragmentProgram.Current; + const struct gl_fragment_program *program = ctx->FragmentProgram._Current; + struct fp_machine machine; GLuint i; - ctx->_CurrentProgram = GL_FRAGMENT_PROGRAM_ARB; /* or NV, doesn't matter */ + CurrentMachine = &machine; - for (i = 0; i < span->end; i++) { + for (i = start; i < end; i++) { if (span->array->mask[i]) { - init_machine(ctx, &ctx->FragmentProgram.Machine, - ctx->FragmentProgram.Current, span, i); - - if (!execute_program(ctx, program, ~0, - &ctx->FragmentProgram.Machine, span, i)) { - span->array->mask[i] = GL_FALSE; /* killed fragment */ + init_machine(ctx, &machine, program, span, i); + + if (execute_program(ctx, program, ~0, &machine, span, i)) { + /* Store result color */ + COPY_4V(span->array->color.sz4.rgba[i], + machine.Outputs[FRAG_RESULT_COLR]); + + /* Store result depth/z */ + if (program->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR)) { + const GLfloat depth = machine.Outputs[FRAG_RESULT_DEPR][2]; + if (depth <= 0.0) + span->array->z[i] = 0; + else if (depth >= 1.0) + span->array->z[i] = ctx->DrawBuffer->_DepthMax; + else + span->array->z[i] = IROUND(depth * ctx->DrawBuffer->_DepthMaxF); + } } - - /* Store output registers */ - { - const GLfloat *colOut - = ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_COLR]; - 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]); + else { + /* killed fragment */ + span->array->mask[i] = GL_FALSE; + span->writeAll = GL_FALSE; } - /* depth value */ - if (program->OutputsWritten & (1 << FRAG_OUTPUT_DEPR)) - span->array->z[i] = IROUND(ctx->FragmentProgram.Machine.Outputs[FRAG_OUTPUT_DEPR][0] * ctx->DepthMaxF); } } + CurrentMachine = NULL; +} + + +/** + * Execute the current fragment program for all the fragments + * in the given span. + */ +void +_swrast_exec_fragment_program( GLcontext *ctx, SWspan *span ) +{ + const struct gl_fragment_program *program = ctx->FragmentProgram._Current; + + /* incoming colors should be floats */ + ASSERT(span->array->ChanType == GL_FLOAT); + + ctx->_CurrentProgram = GL_FRAGMENT_PROGRAM_ARB; /* or NV, doesn't matter */ + + run_program(ctx, span, 0, span->end); + + if (program->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR)) { + span->interpMask &= ~SPAN_Z; + span->arrayMask |= SPAN_Z; + } + ctx->_CurrentProgram = 0; }