| /* |
| * Mesa 3-D graphics library |
| * Version: 7.0.3 |
| * |
| * Copyright (C) 1999-2007 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. |
| */ |
| |
| /** |
| * \file prog_execute.c |
| * Software interpreter for vertex/fragment programs. |
| * \author Brian Paul |
| */ |
| |
| /* |
| * NOTE: we do everything in single-precision floating point; we don't |
| * currently observe the single/half/fixed-precision qualifiers. |
| * |
| */ |
| |
| |
| #include "glheader.h" |
| #include "colormac.h" |
| #include "context.h" |
| #include "program.h" |
| #include "prog_execute.h" |
| #include "prog_instruction.h" |
| #include "prog_parameter.h" |
| #include "prog_print.h" |
| #include "shader/slang/slang_library_noise.h" |
| |
| |
| /* debug predicate */ |
| #define DEBUG_PROG 0 |
| |
| |
| /** |
| * Set x to positive or negative infinity. |
| */ |
| #if defined(USE_IEEE) || defined(_WIN32) |
| #define SET_POS_INFINITY(x) ( *((GLuint *) (void *)&x) = 0x7F800000 ) |
| #define SET_NEG_INFINITY(x) ( *((GLuint *) (void *)&x) = 0xFF800000 ) |
| #elif defined(VMS) |
| #define SET_POS_INFINITY(x) x = __MAXFLOAT |
| #define SET_NEG_INFINITY(x) x = -__MAXFLOAT |
| #else |
| #define SET_POS_INFINITY(x) x = (GLfloat) HUGE_VAL |
| #define SET_NEG_INFINITY(x) x = (GLfloat) -HUGE_VAL |
| #endif |
| |
| #define SET_FLOAT_BITS(x, bits) ((fi_type *) (void *) &(x))->i = bits |
| |
| |
| static const GLfloat ZeroVec[4] = { 0.0F, 0.0F, 0.0F, 0.0F }; |
| |
| |
| |
| /** |
| * Return a pointer to the 4-element float vector specified by the given |
| * source register. |
| */ |
| static INLINE const GLfloat * |
| get_register_pointer(const struct prog_src_register *source, |
| const struct gl_program_machine *machine) |
| { |
| if (source->RelAddr) { |
| const GLint reg = source->Index + machine->AddressReg[0][0]; |
| if (source->File == PROGRAM_ENV_PARAM) |
| if (reg < 0 || reg >= MAX_PROGRAM_ENV_PARAMS) |
| return ZeroVec; |
| else |
| return machine->EnvParams[reg]; |
| else { |
| const struct gl_program_parameter_list *params; |
| ASSERT(source->File == PROGRAM_LOCAL_PARAM || |
| source->File == PROGRAM_CONSTANT || |
| source->File == PROGRAM_STATE_VAR || |
| source->File == PROGRAM_UNIFORM); |
| params = machine->CurProgram->Parameters; |
| if (reg < 0 || reg >= params->NumParameters) |
| return ZeroVec; |
| else |
| return params->ParameterValues[reg]; |
| } |
| } |
| |
| switch (source->File) { |
| case PROGRAM_TEMPORARY: |
| ASSERT(source->Index < MAX_PROGRAM_TEMPS); |
| return machine->Temporaries[source->Index]; |
| |
| case PROGRAM_INPUT: |
| if (machine->CurProgram->Target == GL_VERTEX_PROGRAM_ARB) { |
| ASSERT(source->Index < VERT_ATTRIB_MAX); |
| return machine->VertAttribs[source->Index]; |
| } |
| else { |
| ASSERT(source->Index < FRAG_ATTRIB_MAX); |
| return machine->Attribs[source->Index][machine->CurElement]; |
| } |
| |
| case PROGRAM_OUTPUT: |
| ASSERT(source->Index < MAX_PROGRAM_OUTPUTS); |
| return machine->Outputs[source->Index]; |
| |
| case PROGRAM_LOCAL_PARAM: |
| ASSERT(source->Index < MAX_PROGRAM_LOCAL_PARAMS); |
| return machine->CurProgram->LocalParams[source->Index]; |
| |
| case PROGRAM_ENV_PARAM: |
| ASSERT(source->Index < MAX_PROGRAM_ENV_PARAMS); |
| return machine->EnvParams[source->Index]; |
| |
| case PROGRAM_STATE_VAR: |
| /* Fallthrough */ |
| case PROGRAM_CONSTANT: |
| /* Fallthrough */ |
| case PROGRAM_UNIFORM: |
| /* Fallthrough */ |
| case PROGRAM_NAMED_PARAM: |
| ASSERT(source->Index < |
| (GLint) machine->CurProgram->Parameters->NumParameters); |
| return machine->CurProgram->Parameters->ParameterValues[source->Index]; |
| |
| default: |
| _mesa_problem(NULL, |
| "Invalid input register file %d in get_register_pointer()", |
| source->File); |
| return NULL; |
| } |
| } |
| |
| |
| #if FEATURE_MESA_program_debug |
| static struct gl_program_machine *CurrentMachine = NULL; |
| |
| /** |
| * For GL_MESA_program_debug. |
| * Return current value (4*GLfloat) of a program register. |
| * Called via ctx->Driver.GetProgramRegister(). |
| */ |
| void |
| _mesa_get_program_register(GLcontext *ctx, enum register_file file, |
| GLuint index, GLfloat val[4]) |
| { |
| if (CurrentMachine) { |
| struct prog_src_register src; |
| const GLfloat *reg; |
| src.File = file; |
| src.Index = index; |
| reg = get_register_pointer(&src, CurrentMachine); |
| COPY_4V(val, reg); |
| } |
| } |
| #endif /* FEATURE_MESA_program_debug */ |
| |
| |
| /** |
| * Fetch a 4-element float vector from the given source register. |
| * Apply swizzling and negating as needed. |
| */ |
| static void |
| fetch_vector4(const struct prog_src_register *source, |
| const struct gl_program_machine *machine, GLfloat result[4]) |
| { |
| const GLfloat *src = get_register_pointer(source, machine); |
| ASSERT(src); |
| |
| if (source->Swizzle == SWIZZLE_NOOP) { |
| /* no swizzling */ |
| COPY_4V(result, src); |
| } |
| else { |
| ASSERT(GET_SWZ(source->Swizzle, 0) <= 3); |
| ASSERT(GET_SWZ(source->Swizzle, 1) <= 3); |
| ASSERT(GET_SWZ(source->Swizzle, 2) <= 3); |
| ASSERT(GET_SWZ(source->Swizzle, 3) <= 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]; |
| 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]; |
| } |
| } |
| |
| |
| /** |
| * Fetch the derivative with respect to X or Y for the given register. |
| * XXX this currently only works for fragment program input attribs. |
| */ |
| static void |
| fetch_vector4_deriv(GLcontext * ctx, |
| const struct prog_src_register *source, |
| const struct gl_program_machine *machine, |
| char xOrY, GLfloat result[4]) |
| { |
| if (source->File == PROGRAM_INPUT && source->Index < machine->NumDeriv) { |
| const GLint col = machine->CurElement; |
| const GLfloat w = machine->Attribs[FRAG_ATTRIB_WPOS][col][3]; |
| const GLfloat invQ = 1.0f / w; |
| GLfloat deriv[4]; |
| |
| if (xOrY == 'X') { |
| deriv[0] = machine->DerivX[source->Index][0] * invQ; |
| deriv[1] = machine->DerivX[source->Index][1] * invQ; |
| deriv[2] = machine->DerivX[source->Index][2] * invQ; |
| deriv[3] = machine->DerivX[source->Index][3] * invQ; |
| } |
| else { |
| deriv[0] = machine->DerivY[source->Index][0] * invQ; |
| deriv[1] = machine->DerivY[source->Index][1] * invQ; |
| deriv[2] = machine->DerivY[source->Index][2] * invQ; |
| deriv[3] = machine->DerivY[source->Index][3] * invQ; |
| } |
| |
| result[0] = deriv[GET_SWZ(source->Swizzle, 0)]; |
| result[1] = deriv[GET_SWZ(source->Swizzle, 1)]; |
| result[2] = deriv[GET_SWZ(source->Swizzle, 2)]; |
| result[3] = deriv[GET_SWZ(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]; |
| } |
| } |
| else { |
| ASSIGN_4V(result, 0.0, 0.0, 0.0, 0.0); |
| } |
| } |
| |
| |
| /** |
| * As above, but only return result[0] element. |
| */ |
| static void |
| fetch_vector1(const struct prog_src_register *source, |
| const struct gl_program_machine *machine, GLfloat result[4]) |
| { |
| const GLfloat *src = get_register_pointer(source, machine); |
| ASSERT(src); |
| |
| result[0] = src[GET_SWZ(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]; |
| } |
| } |
| |
| |
| /** |
| * Fetch texel from texture. Use partial derivatives when possible. |
| */ |
| static INLINE void |
| fetch_texel(GLcontext *ctx, |
| const struct gl_program_machine *machine, |
| const struct prog_instruction *inst, |
| const GLfloat texcoord[4], GLfloat lodBias, |
| GLfloat color[4]) |
| { |
| const GLuint unit = machine->Samplers[inst->TexSrcUnit]; |
| |
| /* Note: we only have the right derivatives for fragment input attribs. |
| */ |
| if (machine->NumDeriv > 0 && |
| inst->SrcReg[0].File == PROGRAM_INPUT && |
| inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0 + inst->TexSrcUnit) { |
| /* simple texture fetch for which we should have derivatives */ |
| GLuint attr = inst->SrcReg[0].Index; |
| machine->FetchTexelDeriv(ctx, texcoord, |
| machine->DerivX[attr], |
| machine->DerivY[attr], |
| lodBias, unit, color); |
| } |
| else { |
| machine->FetchTexelLod(ctx, texcoord, lodBias, unit, color); |
| } |
| } |
| |
| |
| /** |
| * 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 code. |
| */ |
| 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; |
| } |
| } |
| |
| |
| /** |
| * Evaluate the 4 condition codes against a predicate and return GL_TRUE |
| * or GL_FALSE to indicate result. |
| */ |
| static INLINE GLboolean |
| eval_condition(const struct gl_program_machine *machine, |
| const struct prog_instruction *inst) |
| { |
| 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)) { |
| return GL_TRUE; |
| } |
| else { |
| return GL_FALSE; |
| } |
| } |
| |
| |
| |
| /** |
| * Store 4 floats into a register. Observe the instructions saturate and |
| * set-condition-code flags. |
| */ |
| static void |
| store_vector4(const struct prog_instruction *inst, |
| struct gl_program_machine *machine, const GLfloat value[4]) |
| { |
| const struct prog_dst_register *dest = &(inst->DstReg); |
| const GLboolean clamp = inst->SaturateMode == SATURATE_ZERO_ONE; |
| GLfloat *dstReg; |
| GLfloat dummyReg[4]; |
| GLfloat clampedValue[4]; |
| GLuint writeMask = dest->WriteMask; |
| |
| switch (dest->File) { |
| case PROGRAM_OUTPUT: |
| ASSERT(dest->Index < MAX_PROGRAM_OUTPUTS); |
| dstReg = machine->Outputs[dest->Index]; |
| break; |
| case PROGRAM_TEMPORARY: |
| ASSERT(dest->Index < MAX_PROGRAM_TEMPS); |
| 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 0 |
| if (value[0] > 1.0e10 || |
| IS_INF_OR_NAN(value[0]) || |
| IS_INF_OR_NAN(value[1]) || |
| IS_INF_OR_NAN(value[2]) || IS_INF_OR_NAN(value[3])) |
| printf("store %g %g %g %g\n", value[0], value[1], value[2], value[3]); |
| #endif |
| |
| 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) { |
| /* 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 & WRITEMASK_X) |
| dstReg[0] = value[0]; |
| if (writeMask & WRITEMASK_Y) |
| dstReg[1] = value[1]; |
| if (writeMask & WRITEMASK_Z) |
| dstReg[2] = value[2]; |
| if (writeMask & WRITEMASK_W) |
| dstReg[3] = value[3]; |
| |
| 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]); |
| #if DEBUG_PROG |
| printf("CondCodes=(%s,%s,%s,%s) for:\n", |
| _mesa_condcode_string(machine->CondCodes[0]), |
| _mesa_condcode_string(machine->CondCodes[1]), |
| _mesa_condcode_string(machine->CondCodes[2]), |
| _mesa_condcode_string(machine->CondCodes[3])); |
| #endif |
| } |
| } |
| |
| |
| /** |
| * Execute the given vertex/fragment program. |
| * |
| * \param ctx rendering context |
| * \param program the program to execute |
| * \param machine machine state (must be initialized) |
| * \return GL_TRUE if program completed or GL_FALSE if program executed KIL. |
| */ |
| GLboolean |
| _mesa_execute_program(GLcontext * ctx, |
| const struct gl_program *program, |
| struct gl_program_machine *machine) |
| { |
| const GLuint numInst = program->NumInstructions; |
| const GLuint maxExec = 10000; |
| GLint pc, numExec = 0; |
| |
| machine->CurProgram = program; |
| |
| if (DEBUG_PROG) { |
| printf("execute program %u --------------------\n", program->Id); |
| } |
| |
| #if FEATURE_MESA_program_debug |
| CurrentMachine = machine; |
| #endif |
| |
| if (program->Target == GL_VERTEX_PROGRAM_ARB) { |
| machine->EnvParams = ctx->VertexProgram.Parameters; |
| } |
| else { |
| machine->EnvParams = ctx->FragmentProgram.Parameters; |
| } |
| |
| for (pc = 0; pc < numInst; pc++) { |
| const struct prog_instruction *inst = program->Instructions + pc; |
| |
| #if FEATURE_MESA_program_debug |
| if (ctx->FragmentProgram.CallbackEnabled && |
| ctx->FragmentProgram.Callback) { |
| ctx->FragmentProgram.CurrentPosition = inst->StringPos; |
| ctx->FragmentProgram.Callback(program->Target, |
| ctx->FragmentProgram.CallbackData); |
| } |
| #endif |
| |
| if (DEBUG_PROG) { |
| _mesa_print_instruction(inst); |
| } |
| |
| switch (inst->Opcode) { |
| case OPCODE_ABS: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| result[0] = FABSF(a[0]); |
| result[1] = FABSF(a[1]); |
| result[2] = FABSF(a[2]); |
| result[3] = FABSF(a[3]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case 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, machine, result); |
| if (DEBUG_PROG) { |
| 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_ARL: |
| { |
| GLfloat t[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, t); |
| machine->AddressReg[0][0] = (GLint) FLOORF(t[0]); |
| } |
| break; |
| case OPCODE_BGNLOOP: |
| /* no-op */ |
| break; |
| case OPCODE_ENDLOOP: |
| /* subtract 1 here since pc is incremented by for(pc) loop */ |
| pc = inst->BranchTarget - 1; /* go to matching BNGLOOP */ |
| break; |
| case OPCODE_BGNSUB: /* begin subroutine */ |
| break; |
| case OPCODE_ENDSUB: /* end subroutine */ |
| break; |
| case OPCODE_BRA: /* branch (conditional) */ |
| /* fall-through */ |
| case OPCODE_BRK: /* break out of loop (conditional) */ |
| /* fall-through */ |
| case OPCODE_CONT: /* continue loop (conditional) */ |
| if (eval_condition(machine, inst)) { |
| /* take branch */ |
| /* Subtract 1 here since we'll do pc++ at end of for-loop */ |
| pc = inst->BranchTarget - 1; |
| } |
| break; |
| case OPCODE_CAL: /* Call subroutine (conditional) */ |
| if (eval_condition(machine, inst)) { |
| /* call the subroutine */ |
| if (machine->StackDepth >= MAX_PROGRAM_CALL_DEPTH) { |
| return GL_TRUE; /* Per GL_NV_vertex_program2 spec */ |
| } |
| machine->CallStack[machine->StackDepth++] = pc + 1; /* next inst */ |
| /* Subtract 1 here since we'll do pc++ at end of for-loop */ |
| pc = inst->BranchTarget - 1; |
| } |
| break; |
| case OPCODE_CMP: |
| { |
| 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] < 0.0F ? b[0] : c[0]; |
| result[1] = a[1] < 0.0F ? b[1] : c[1]; |
| result[2] = a[2] < 0.0F ? b[2] : c[2]; |
| result[3] = a[3] < 0.0F ? b[3] : c[3]; |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_COS: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| result[0] = result[1] = result[2] = result[3] |
| = (GLfloat) _mesa_cos(a[0]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_DDX: /* Partial derivative with respect to X */ |
| { |
| GLfloat result[4]; |
| fetch_vector4_deriv(ctx, &inst->SrcReg[0], machine, |
| 'X', result); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_DDY: /* Partial derivative with respect to Y */ |
| { |
| GLfloat result[4]; |
| fetch_vector4_deriv(ctx, &inst->SrcReg[0], machine, |
| 'Y', result); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case 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] = DOT3(a, b); |
| store_vector4(inst, machine, result); |
| if (DEBUG_PROG) { |
| 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 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] = DOT4(a, b); |
| store_vector4(inst, machine, result); |
| if (DEBUG_PROG) { |
| 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 OPCODE_DPH: |
| { |
| 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] + b[3]; |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_DST: /* Distance vector */ |
| { |
| GLfloat a[4], b[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| fetch_vector4(&inst->SrcReg[1], machine, b); |
| result[0] = 1.0F; |
| result[1] = a[1] * b[1]; |
| result[2] = a[2]; |
| result[3] = b[3]; |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_EXP: |
| { |
| GLfloat t[4], q[4], floor_t0; |
| fetch_vector1(&inst->SrcReg[0], machine, t); |
| floor_t0 = FLOORF(t[0]); |
| if (floor_t0 > FLT_MAX_EXP) { |
| SET_POS_INFINITY(q[0]); |
| SET_POS_INFINITY(q[2]); |
| } |
| else if (floor_t0 < FLT_MIN_EXP) { |
| q[0] = 0.0F; |
| q[2] = 0.0F; |
| } |
| else { |
| q[0] = LDEXPF(1.0, (int) floor_t0); |
| /* Note: GL_NV_vertex_program expects |
| * result.z = result.x * APPX(result.y) |
| * We do what the ARB extension says. |
| */ |
| q[2] = (GLfloat) pow(2.0, t[0]); |
| } |
| q[1] = t[0] - floor_t0; |
| q[3] = 1.0F; |
| store_vector4( inst, machine, q ); |
| } |
| break; |
| case OPCODE_EX2: /* Exponential base 2 */ |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| result[0] = result[1] = result[2] = result[3] = |
| (GLfloat) _mesa_pow(2.0, a[0]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_FLR: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| result[0] = FLOORF(a[0]); |
| result[1] = FLOORF(a[1]); |
| result[2] = FLOORF(a[2]); |
| result[3] = FLOORF(a[3]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_FRC: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| result[0] = a[0] - FLOORF(a[0]); |
| result[1] = a[1] - FLOORF(a[1]); |
| result[2] = a[2] - FLOORF(a[2]); |
| result[3] = a[3] - FLOORF(a[3]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_IF: |
| { |
| GLboolean cond; |
| /* eval condition */ |
| if (inst->SrcReg[0].File != PROGRAM_UNDEFINED) { |
| GLfloat a[4]; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| cond = (a[0] != 0.0); |
| } |
| else { |
| cond = eval_condition(machine, inst); |
| } |
| if (DEBUG_PROG) { |
| printf("IF: %d\n", cond); |
| } |
| /* do if/else */ |
| if (cond) { |
| /* do if-clause (just continue execution) */ |
| } |
| else { |
| /* go to the instruction after ELSE or ENDIF */ |
| assert(inst->BranchTarget >= 0); |
| pc = inst->BranchTarget - 1; |
| } |
| } |
| break; |
| case OPCODE_ELSE: |
| /* goto ENDIF */ |
| assert(inst->BranchTarget >= 0); |
| pc = inst->BranchTarget - 1; |
| break; |
| case OPCODE_ENDIF: |
| /* nothing */ |
| break; |
| case OPCODE_INT: /* float to int */ |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| result[0] = (GLfloat) (GLint) a[0]; |
| result[1] = (GLfloat) (GLint) a[1]; |
| result[2] = (GLfloat) (GLint) a[2]; |
| result[3] = (GLfloat) (GLint) a[3]; |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_KIL_NV: /* NV_f_p only (conditional) */ |
| if (eval_condition(machine, inst)) { |
| return GL_FALSE; |
| } |
| break; |
| case OPCODE_KIL: /* ARB_f_p only */ |
| { |
| GLfloat a[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| if (a[0] < 0.0F || a[1] < 0.0F || a[2] < 0.0F || a[3] < 0.0F) { |
| return GL_FALSE; |
| } |
| } |
| break; |
| case OPCODE_LG2: /* log base 2 */ |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| result[0] = result[1] = result[2] = result[3] = LOG2(a[0]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_LIT: |
| { |
| const GLfloat epsilon = 1.0F / 256.0F; /* from NV VP spec */ |
| GLfloat a[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| 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]; |
| /* 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_PROG) { |
| 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 OPCODE_LOG: |
| { |
| GLfloat t[4], q[4], abs_t0; |
| fetch_vector1(&inst->SrcReg[0], machine, t); |
| abs_t0 = FABSF(t[0]); |
| if (abs_t0 != 0.0F) { |
| /* Since we really can't handle infinite values on VMS |
| * like other OSes we'll use __MAXFLOAT to represent |
| * infinity. This may need some tweaking. |
| */ |
| #ifdef VMS |
| if (abs_t0 == __MAXFLOAT) |
| #else |
| if (IS_INF_OR_NAN(abs_t0)) |
| #endif |
| { |
| SET_POS_INFINITY(q[0]); |
| q[1] = 1.0F; |
| SET_POS_INFINITY(q[2]); |
| } |
| else { |
| int exponent; |
| GLfloat mantissa = FREXPF(t[0], &exponent); |
| q[0] = (GLfloat) (exponent - 1); |
| q[1] = (GLfloat) (2.0 * mantissa); /* map [.5, 1) -> [1, 2) */ |
| q[2] = (GLfloat) (q[0] + LOG2(q[1])); |
| } |
| } |
| else { |
| SET_NEG_INFINITY(q[0]); |
| q[1] = 1.0F; |
| SET_NEG_INFINITY(q[2]); |
| } |
| q[3] = 1.0; |
| store_vector4(inst, machine, q); |
| } |
| break; |
| case 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, machine, result); |
| if (DEBUG_PROG) { |
| 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 OPCODE_MAD: |
| { |
| 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]; |
| result[1] = a[1] * b[1] + c[1]; |
| result[2] = a[2] * b[2] + c[2]; |
| result[3] = a[3] * b[3] + c[3]; |
| store_vector4(inst, machine, result); |
| if (DEBUG_PROG) { |
| 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 OPCODE_MAX: |
| { |
| GLfloat a[4], b[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| fetch_vector4(&inst->SrcReg[1], machine, b); |
| result[0] = MAX2(a[0], b[0]); |
| result[1] = MAX2(a[1], b[1]); |
| result[2] = MAX2(a[2], b[2]); |
| result[3] = MAX2(a[3], b[3]); |
| store_vector4(inst, machine, result); |
| if (DEBUG_PROG) { |
| 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 OPCODE_MIN: |
| { |
| GLfloat a[4], b[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| fetch_vector4(&inst->SrcReg[1], machine, b); |
| result[0] = MIN2(a[0], b[0]); |
| result[1] = MIN2(a[1], b[1]); |
| result[2] = MIN2(a[2], b[2]); |
| result[3] = MIN2(a[3], b[3]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_MOV: |
| { |
| GLfloat result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, result); |
| store_vector4(inst, machine, result); |
| if (DEBUG_PROG) { |
| printf("MOV (%g %g %g %g)\n", |
| result[0], result[1], result[2], result[3]); |
| } |
| } |
| break; |
| case OPCODE_MUL: |
| { |
| 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); |
| if (DEBUG_PROG) { |
| 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 OPCODE_NOISE1: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| result[0] = |
| result[1] = |
| result[2] = result[3] = _slang_library_noise1(a[0]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_NOISE2: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| result[0] = |
| result[1] = |
| result[2] = result[3] = _slang_library_noise2(a[0], a[1]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_NOISE3: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| result[0] = |
| result[1] = |
| result[2] = |
| result[3] = _slang_library_noise3(a[0], a[1], a[2]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_NOISE4: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| result[0] = |
| result[1] = |
| result[2] = |
| result[3] = _slang_library_noise4(a[0], a[1], a[2], a[3]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_NOP: |
| break; |
| case OPCODE_PK2H: /* pack two 16-bit floats in one 32-bit float */ |
| { |
| GLfloat a[4], result[4]; |
| GLhalfNV hx, hy; |
| GLuint *rawResult = (GLuint *) result; |
| GLuint twoHalves; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| hx = _mesa_float_to_half(a[0]); |
| hy = _mesa_float_to_half(a[1]); |
| twoHalves = hx | (hy << 16); |
| rawResult[0] = rawResult[1] = rawResult[2] = rawResult[3] |
| = twoHalves; |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_PK2US: /* pack two GLushorts into one 32-bit float */ |
| { |
| 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[1], 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 OPCODE_PK4B: /* pack four GLbytes into one 32-bit float */ |
| { |
| 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 OPCODE_PK4UB: /* pack four GLubytes into one 32-bit float */ |
| { |
| 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 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] |
| = (GLfloat) _mesa_pow(a[0], b[0]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_RCP: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| if (DEBUG_PROG) { |
| 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 OPCODE_RET: /* return from subroutine (conditional) */ |
| if (eval_condition(machine, inst)) { |
| if (machine->StackDepth == 0) { |
| return GL_TRUE; /* Per GL_NV_vertex_program2 spec */ |
| } |
| /* subtract one because of pc++ in the for loop */ |
| pc = machine->CallStack[--machine->StackDepth] - 1; |
| } |
| break; |
| case OPCODE_RFL: /* reflection vector */ |
| { |
| GLfloat axis[4], dir[4], result[4], tmpX, tmpW; |
| fetch_vector4(&inst->SrcReg[0], machine, axis); |
| fetch_vector4(&inst->SrcReg[1], machine, dir); |
| 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 OPCODE_RSQ: /* 1 / sqrt() */ |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector1(&inst->SrcReg[0], machine, 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_PROG) { |
| printf("RSQ %g = 1/sqrt(|%g|)\n", result[0], a[0]); |
| } |
| } |
| break; |
| case OPCODE_SCS: /* sine and cos */ |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| 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 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); |
| if (DEBUG_PROG) { |
| printf("SEQ (%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_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 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); |
| if (DEBUG_PROG) { |
| printf("SGE (%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_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); |
| if (DEBUG_PROG) { |
| printf("SGT (%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_SIN: |
| { |
| GLfloat a[4], result[4]; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| result[0] = result[1] = result[2] = result[3] |
| = (GLfloat) _mesa_sin(a[0]); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case 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); |
| if (DEBUG_PROG) { |
| printf("SLE (%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_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); |
| if (DEBUG_PROG) { |
| printf("SLT (%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_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); |
| if (DEBUG_PROG) { |
| printf("SNE (%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_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 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); |
| if (DEBUG_PROG) { |
| 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 OPCODE_SWZ: /* extended swizzle */ |
| { |
| const struct prog_src_register *source = &inst->SrcReg[0]; |
| const GLfloat *src = get_register_pointer(source, machine); |
| GLfloat result[4]; |
| GLuint i; |
| for (i = 0; i < 4; i++) { |
| const GLuint swz = GET_SWZ(source->Swizzle, i); |
| if (swz == SWIZZLE_ZERO) |
| result[i] = 0.0; |
| 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 OPCODE_TEX: /* Both ARB and NV frag prog */ |
| /* Simple texel lookup */ |
| { |
| GLfloat texcoord[4], color[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, texcoord); |
| |
| fetch_texel(ctx, machine, inst, texcoord, 0.0, color); |
| |
| if (DEBUG_PROG) { |
| printf("TEX (%g, %g, %g, %g) = texture[%d][%g, %g, %g, %g]\n", |
| color[0], color[1], color[2], color[3], |
| inst->TexSrcUnit, |
| texcoord[0], texcoord[1], texcoord[2], texcoord[3]); |
| } |
| store_vector4(inst, machine, color); |
| } |
| break; |
| case OPCODE_TXB: /* GL_ARB_fragment_program only */ |
| /* Texel lookup with LOD bias */ |
| { |
| const struct gl_texture_unit *texUnit |
| = &ctx->Texture.Unit[inst->TexSrcUnit]; |
| GLfloat texcoord[4], color[4], lodBias; |
| |
| fetch_vector4(&inst->SrcReg[0], machine, texcoord); |
| |
| /* texcoord[3] is the bias to add to lambda */ |
| lodBias = texUnit->LodBias + texcoord[3]; |
| if (texUnit->_Current) { |
| lodBias += texUnit->_Current->LodBias; |
| } |
| |
| fetch_texel(ctx, machine, inst, texcoord, lodBias, color); |
| |
| store_vector4(inst, machine, color); |
| } |
| break; |
| case OPCODE_TXD: /* GL_NV_fragment_program only */ |
| /* 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); |
| machine->FetchTexelDeriv(ctx, texcoord, dtdx, dtdy, |
| 0.0, /* lodBias */ |
| inst->TexSrcUnit, color); |
| store_vector4(inst, machine, color); |
| } |
| break; |
| case OPCODE_TXP: /* GL_ARB_fragment_program only */ |
| /* Texture lookup w/ projective divide */ |
| { |
| GLfloat texcoord[4], color[4]; |
| |
| fetch_vector4(&inst->SrcReg[0], machine, 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, machine, inst, texcoord, 0.0, color); |
| |
| store_vector4(inst, machine, color); |
| } |
| break; |
| case OPCODE_TXP_NV: /* GL_NV_fragment_program only */ |
| /* Texture lookup w/ projective divide, as above, but do not |
| * do the divide by w if sampling from a cube map. |
| */ |
| { |
| GLfloat texcoord[4], color[4]; |
| |
| fetch_vector4(&inst->SrcReg[0], machine, 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, machine, inst, texcoord, 0.0, 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; |
| GLhalfNV hx, hy; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| hx = rawBits[0] & 0xffff; |
| hy = rawBits[0] >> 16; |
| result[0] = result[2] = _mesa_half_to_float(hx); |
| result[1] = result[3] = _mesa_half_to_float(hy); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_UP2US: /* unpack two GLushorts */ |
| { |
| GLfloat a[4], result[4]; |
| const GLuint *rawBits = (const GLuint *) a; |
| GLushort usx, usy; |
| fetch_vector1(&inst->SrcReg[0], machine, a); |
| usx = rawBits[0] & 0xffff; |
| usy = rawBits[0] >> 16; |
| result[0] = result[2] = usx * (1.0f / 65535.0f); |
| result[1] = result[3] = usy * (1.0f / 65535.0f); |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case 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[1] = (((rawBits[0] >> 8) & 0xff) - 128) / 127.0F; |
| result[2] = (((rawBits[0] >> 16) & 0xff) - 128) / 127.0F; |
| result[3] = (((rawBits[0] >> 24) & 0xff) - 128) / 127.0F; |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case 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[1] = ((rawBits[0] >> 8) & 0xff) / 255.0F; |
| result[2] = ((rawBits[0] >> 16) & 0xff) / 255.0F; |
| result[3] = ((rawBits[0] >> 24) & 0xff) / 255.0F; |
| store_vector4(inst, machine, result); |
| } |
| break; |
| case OPCODE_XPD: /* cross product */ |
| { |
| GLfloat a[4], b[4], result[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, a); |
| fetch_vector4(&inst->SrcReg[1], machine, b); |
| result[0] = a[1] * b[2] - a[2] * b[1]; |
| result[1] = a[2] * b[0] - a[0] * b[2]; |
| result[2] = a[0] * b[1] - a[1] * b[0]; |
| result[3] = 1.0; |
| store_vector4(inst, machine, result); |
| if (DEBUG_PROG) { |
| printf("XPD (%g %g %g %g) = (%g %g %g) X (%g %g %g)\n", |
| result[0], result[1], result[2], result[3], |
| a[0], a[1], a[2], b[0], b[1], b[2]); |
| } |
| } |
| break; |
| case 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; |
| case OPCODE_PRINT: |
| { |
| if (inst->SrcReg[0].File != -1) { |
| GLfloat a[4]; |
| fetch_vector4(&inst->SrcReg[0], machine, 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_execute_program", |
| inst->Opcode); |
| return GL_TRUE; /* return value doesn't matter */ |
| } |
| |
| numExec++; |
| if (numExec > maxExec) { |
| _mesa_problem(ctx, "Infinite loop detected in fragment program"); |
| return GL_TRUE; |
| } |
| |
| } /* for pc */ |
| |
| #if FEATURE_MESA_program_debug |
| CurrentMachine = NULL; |
| #endif |
| |
| return GL_TRUE; |
| } |
