diff options
| -rw-r--r-- | src/mesa/swrast/s_fragprog.c | 1523 |
1 files changed, 12 insertions, 1511 deletions
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c index a41b3ce1252..4482006ba64 100644 --- a/src/mesa/swrast/s_fragprog.c +++ b/src/mesa/swrast/s_fragprog.c @@ -25,6 +25,7 @@ #include "glheader.h" #include "colormac.h" #include "context.h" +#include "prog_execute.h" #include "prog_instruction.h" #include "prog_parameter.h" #include "prog_print.h" @@ -35,63 +36,6 @@ #include "slang_library_noise.h" -/* 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 -{ - /** Fragment Input attributes */ - GLfloat (*Attribs)[MAX_WIDTH][4]; - GLuint CurFrag; /**< Index into Attribs arrays */ - - GLfloat Temporaries[MAX_PROGRAM_TEMPS][4]; - GLfloat Outputs[FRAG_RESULT_MAX][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->Attribs[index][CurrentMachine->CurFrag]); - 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. */ @@ -147,1449 +91,6 @@ fetch_texel_deriv( GLcontext *ctx, const GLfloat texcoord[4], /** - * Return a pointer to the 4-element float vector specified by the given - * source register. - */ -static INLINE const GLfloat * -get_register_pointer( GLcontext *ctx, - const struct prog_src_register *source, - const struct fp_machine *machine, - const struct gl_fragment_program *program ) -{ - /* XXX relative addressing... */ - switch (source->File) { - case PROGRAM_TEMPORARY: - ASSERT(source->Index < MAX_PROGRAM_TEMPS); - return machine->Temporaries[source->Index]; - case PROGRAM_INPUT: - ASSERT(source->Index < FRAG_ATTRIB_MAX); - return machine->Attribs[source->Index][machine->CurFrag]; - case PROGRAM_OUTPUT: - /* This is only for PRINT */ - ASSERT(source->Index < FRAG_RESULT_MAX); - 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_PROGRAM_ENV_PARAMS); - return ctx->FragmentProgram.Parameters[source->Index]; - case PROGRAM_STATE_VAR: - /* Fallthrough */ - case PROGRAM_CONSTANT: - /* Fallthrough */ - case PROGRAM_UNIFORM: - /* 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; - } -} - - -/** - * Fetch a 4-element float vector from the given source register. - * Apply swizzling and negating as needed. - */ -static void -fetch_vector4( GLcontext *ctx, - const struct prog_src_register *source, - const struct fp_machine *machine, - const struct gl_fragment_program *program, - GLfloat result[4] ) -{ - const GLfloat *src = get_register_pointer(ctx, source, machine, program); - 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 for the given register. - * \return GL_TRUE if it was easily computed or GL_FALSE if we - * need to execute another instance of the program (ugh)! - */ -static GLboolean -fetch_vector4_deriv( GLcontext *ctx, - const struct prog_src_register *source, - const SWspan *span, - char xOrY, GLint column, GLfloat result[4] ) -{ - GLfloat src[4]; - - ASSERT(xOrY == 'X' || xOrY == 'Y'); - - switch (source->Index) { - case FRAG_ATTRIB_WPOS: - if (xOrY == 'X') { - src[0] = 1.0; - src[1] = 0.0; - src[2] = span->attrStepX[FRAG_ATTRIB_WPOS][2] - / ctx->DrawBuffer->_DepthMaxF; - src[3] = span->attrStepX[FRAG_ATTRIB_WPOS][3]; - } - else { - src[0] = 0.0; - src[1] = 1.0; - src[2] = span->attrStepY[FRAG_ATTRIB_WPOS][2] - / ctx->DrawBuffer->_DepthMaxF; - src[3] = span->attrStepY[FRAG_ATTRIB_WPOS][3]; - } - break; - case FRAG_ATTRIB_COL0: - case FRAG_ATTRIB_COL1: - if (xOrY == 'X') { - src[0] = span->attrStepX[source->Index][0] * (1.0F / CHAN_MAXF); - src[1] = span->attrStepX[source->Index][1] * (1.0F / CHAN_MAXF); - src[2] = span->attrStepX[source->Index][2] * (1.0F / CHAN_MAXF); - src[3] = span->attrStepX[source->Index][3] * (1.0F / CHAN_MAXF); - } - else { - src[0] = span->attrStepY[source->Index][0] * (1.0F / CHAN_MAXF); - src[1] = span->attrStepY[source->Index][1] * (1.0F / CHAN_MAXF); - src[2] = span->attrStepY[source->Index][2] * (1.0F / CHAN_MAXF); - src[3] = span->attrStepY[source->Index][3] * (1.0F / CHAN_MAXF); - } - break; - case FRAG_ATTRIB_FOGC: - if (xOrY == 'X') { - src[0] = span->attrStepX[FRAG_ATTRIB_FOGC][0] * (1.0F / CHAN_MAXF); - src[1] = 0.0; - src[2] = 0.0; - src[3] = 0.0; - } - else { - src[0] = span->attrStepY[FRAG_ATTRIB_FOGC][0] * (1.0F / CHAN_MAXF); - src[1] = 0.0; - src[2] = 0.0; - src[3] = 0.0; - } - break; - default: - assert(source->Index < FRAG_ATTRIB_MAX); - /* texcoord or varying */ - if (xOrY == 'X') { - /* this is a little tricky - I think I've got it right */ - const GLfloat invQ = 1.0f / (span->attrStart[source->Index][3] - + span->attrStepX[source->Index][3] * column); - src[0] = span->attrStepX[source->Index][0] * invQ; - src[1] = span->attrStepX[source->Index][1] * invQ; - src[2] = span->attrStepX[source->Index][2] * invQ; - src[3] = span->attrStepX[source->Index][3] * invQ; - } - else { - /* Tricky, as above, but in Y direction */ - const GLfloat invQ = 1.0f / (span->attrStart[source->Index][3] - + span->attrStepY[source->Index][3]); - src[0] = span->attrStepY[source->Index][0] * invQ; - src[1] = span->attrStepY[source->Index][1] * invQ; - src[2] = span->attrStepY[source->Index][2] * invQ; - src[3] = span->attrStepY[source->Index][3] * invQ; - } - break; - } - - 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]; - } - return GL_TRUE; -} - - -/** - * As above, but only return result[0] element. - */ -static void -fetch_vector1( GLcontext *ctx, - const struct prog_src_register *source, - const struct fp_machine *machine, - const struct gl_fragment_program *program, - GLfloat result[4] ) -{ - const GLfloat *src = get_register_pointer(ctx, source, machine, program); - 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]; - } -} - - -/** - * 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 fp_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 fp_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: - dstReg = machine->Outputs[dest->Index]; - break; - 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 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]); - } -} - - -/** - * Initialize a new machine state instance from an existing one, adding - * the partial derivatives onto the input registers. - * Used to implement DDX and DDY instructions in non-trivial cases. - */ -static void -init_machine_deriv( GLcontext *ctx, - const struct fp_machine *machine, - const struct gl_fragment_program *program, - const SWspan *span, char xOrY, - struct fp_machine *dMachine ) -{ - GLuint attr; - - ASSERT(xOrY == 'X' || xOrY == 'Y'); - - /* copy existing machine */ - _mesa_memcpy(dMachine, machine, sizeof(struct fp_machine)); - - if (program->Base.Target == GL_FRAGMENT_PROGRAM_NV) { - /* XXX also need to do this when using valgrind */ - /* Clear temporary registers (undefined for ARB_f_p) */ - _mesa_bzero( (void*) machine->Temporaries, - MAX_PROGRAM_TEMPS * 4 * sizeof(GLfloat)); - } - - /* Add derivatives */ - if (program->Base.InputsRead & FRAG_BIT_WPOS) { - GLfloat *wpos = machine->Attribs[FRAG_ATTRIB_WPOS][machine->CurFrag]; - if (xOrY == 'X') { - wpos[0] += 1.0F; - wpos[1] += 0.0F; - wpos[2] += span->attrStepX[FRAG_ATTRIB_WPOS][2]; - wpos[3] += span->attrStepX[FRAG_ATTRIB_WPOS][3]; - } - else { - wpos[0] += 0.0F; - wpos[1] += 1.0F; - wpos[2] += span->attrStepY[FRAG_ATTRIB_WPOS][2]; - wpos[3] += span->attrStepY[FRAG_ATTRIB_WPOS][3]; - } - } - - /* primary, secondary colors */ - for (attr = FRAG_ATTRIB_COL0; attr <= FRAG_ATTRIB_COL1; attr++) { - if (program->Base.InputsRead & (1 << attr)) { - GLfloat *col = machine->Attribs[attr][machine->CurFrag]; - if (xOrY == 'X') { - col[0] += span->attrStepX[attr][0] * (1.0F / CHAN_MAXF); - col[1] += span->attrStepX[attr][1] * (1.0F / CHAN_MAXF); - col[2] += span->attrStepX[attr][2] * (1.0F / CHAN_MAXF); - col[3] += span->attrStepX[attr][3] * (1.0F / CHAN_MAXF); - } - else { - col[0] += span->attrStepY[attr][0] * (1.0F / CHAN_MAXF); - col[1] += span->attrStepY[attr][1] * (1.0F / CHAN_MAXF); - col[2] += span->attrStepY[attr][2] * (1.0F / CHAN_MAXF); - col[3] += span->attrStepY[attr][3] * (1.0F / CHAN_MAXF); - } - } - } - if (program->Base.InputsRead & FRAG_BIT_FOGC) { - GLfloat *fogc = machine->Attribs[FRAG_ATTRIB_FOGC][machine->CurFrag]; - if (xOrY == 'X') { - fogc[0] += span->attrStepX[FRAG_ATTRIB_FOGC][0]; - } - else { - fogc[0] += span->attrStepY[FRAG_ATTRIB_FOGC][0]; - } - } - /* texcoord and varying vars */ - for (attr = FRAG_ATTRIB_TEX0; attr < FRAG_ATTRIB_MAX; attr++) { - if (program->Base.InputsRead & (1 << attr)) { - GLfloat *val = machine->Attribs[attr][machine->CurFrag]; - /* XXX perspective-correct interpolation */ - if (xOrY == 'X') { - val[0] += span->attrStepX[attr][0]; - val[1] += span->attrStepX[attr][1]; - val[2] += span->attrStepX[attr][2]; - val[3] += span->attrStepX[attr][3]; - } - else { - val[0] += span->attrStepY[attr][0]; - val[1] += span->attrStepY[attr][1]; - val[2] += span->attrStepY[attr][2]; - val[3] += span->attrStepY[attr][3]; - } - } - } - - /* init condition codes */ - dMachine->CondCodes[0] = COND_EQ; - dMachine->CondCodes[1] = COND_EQ; - dMachine->CondCodes[2] = COND_EQ; - dMachine->CondCodes[3] = COND_EQ; -} - - -/** - * Execute the given vertex program. - * NOTE: we do everything in single-precision floating point; we don't - * currently observe the single/half/fixed-precision qualifiers. - * \param ctx - rendering context - * \param program - the fragment program to execute - * \param machine - machine state (register file) - * \param maxInst - max number of instructions to execute - * \return GL_TRUE if program completed or GL_FALSE if program executed KIL. - */ -static GLboolean -execute_program( GLcontext *ctx, - const struct gl_fragment_program *program, GLuint maxInst, - struct fp_machine *machine, const SWspan *span, - GLuint column ) -{ - const GLuint MAX_EXEC = 10000; - GLint pc, total = 0; - - if (DEBUG_FRAG) { - printf("execute fragment program --------------------\n"); - } - - for (pc = 0; pc < maxInst; pc++) { - const struct prog_instruction *inst = program->Base.Instructions + pc; - - if (ctx->FragmentProgram.CallbackEnabled && - ctx->FragmentProgram.Callback) { - ctx->FragmentProgram.CurrentPosition = inst->StringPos; - ctx->FragmentProgram.Callback(program->Base.Target, - ctx->FragmentProgram.CallbackData); - } - - if (DEBUG_FRAG) { - _mesa_print_instruction(inst); - } - - switch (inst->Opcode) { - case OPCODE_ABS: - { - GLfloat a[4], result[4]; - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, a ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, 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_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_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; - pc = inst->BranchTarget; /* XXX - 1 ??? */ - } - break; - case OPCODE_CMP: - { - GLfloat a[4], b[4], c[4], result[4]; - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b ); - fetch_vector4( ctx, &inst->SrcReg[2], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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 a[4], aNext[4], result[4]; - struct fp_machine dMachine; - if (!fetch_vector4_deriv(ctx, &inst->SrcReg[0], span, 'X', - column, result)) { - /* This is tricky. Make a copy of the current machine state, - * increment the input registers by the dx or dy partial - * derivatives, then re-execute the program up to the - * preceeding instruction, then fetch the source register. - * Finally, find the difference in the register values for - * the original and derivative runs. - */ - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a); - init_machine_deriv(ctx, machine, program, span, - 'X', &dMachine); - execute_program(ctx, program, pc, &dMachine, span, column); - fetch_vector4( ctx, &inst->SrcReg[0], &dMachine, program, aNext ); - result[0] = aNext[0] - a[0]; - result[1] = aNext[1] - a[1]; - result[2] = aNext[2] - a[2]; - result[3] = aNext[3] - a[3]; - } - store_vector4( inst, machine, result ); - } - break; - case OPCODE_DDY: /* Partial derivative with respect to Y */ - { - GLfloat a[4], aNext[4], result[4]; - struct fp_machine dMachine; - if (!fetch_vector4_deriv(ctx, &inst->SrcReg[0], span, 'Y', - column, result)) { - init_machine_deriv(ctx, machine, program, span, - 'Y', &dMachine); - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a); - execute_program(ctx, program, pc, &dMachine, span, column); - fetch_vector4( ctx, &inst->SrcReg[0], &dMachine, program, aNext ); - result[0] = aNext[0] - a[0]; - result[1] = aNext[1] - a[1]; - result[2] = aNext[2] - a[2]; - result[3] = aNext[3] - a[3]; - } - store_vector4( inst, machine, result ); - } - break; - 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] = 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]); - } - } - break; - 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] = 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 OPCODE_DPH: - { - 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] + b[3]; - store_vector4( inst, machine, result ); - } - break; - case OPCODE_DST: /* Distance vector */ - { - 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] = 1.0F; - result[1] = a[1] * b[1]; - result[2] = a[2]; - result[3] = b[3]; - store_vector4( inst, machine, result ); - } - break; - case OPCODE_EX2: /* Exponential base 2 */ - { - GLfloat a[4], result[4]; - fetch_vector1( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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: - if (eval_condition(machine, inst)) { - /* 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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_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 OPCODE_LRP: - { - GLfloat a[4], b[4], c[4], result[4]; - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b ); - fetch_vector4( ctx, &inst->SrcReg[2], machine, program, 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_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 OPCODE_MAD: - { - GLfloat a[4], b[4], c[4], result[4]; - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b ); - fetch_vector4( ctx, &inst->SrcReg[2], machine, program, 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_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 OPCODE_MAX: - { - 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] = 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_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 OPCODE_MIN: - { - 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] = 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( 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 OPCODE_MUL: - { - 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] = 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_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 OPCODE_NOISE1: - { - GLfloat a[4], result[4]; - fetch_vector1( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, a ); - fetch_vector1( ctx, &inst->SrcReg[1], machine, program, 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( 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"); - } - 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 */ - } - 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 ); - 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( 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]); - } - } - break; - case OPCODE_SCS: /* sine and cos */ - { - GLfloat a[4], result[4]; - fetch_vector1( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, a ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b ); - result[0] = (a[0] == b[0]) ? 1.0F : 0.0F; - result[1] = (a[1] == b[1]) ? 1.0F : 0.0F; - result[2] = (a[2] == b[2]) ? 1.0F : 0.0F; - result[3] = (a[3] == b[3]) ? 1.0F : 0.0F; - store_vector4( inst, machine, result ); - } - break; - case 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( ctx, &inst->SrcReg[0], machine, program, a ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b ); - result[0] = (a[0] >= b[0]) ? 1.0F : 0.0F; - result[1] = (a[1] >= b[1]) ? 1.0F : 0.0F; - result[2] = (a[2] >= b[2]) ? 1.0F : 0.0F; - result[3] = (a[3] >= b[3]) ? 1.0F : 0.0F; - store_vector4( inst, machine, result ); - } - break; - case OPCODE_SGT: /* set on greater */ - { - 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] = (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_FRAG) { - printf("SGT %g %g %g %g\n", - result[0], result[1], result[2], result[3]); - } - } - break; - 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]); - store_vector4( inst, machine, result ); - } - break; - case OPCODE_SLE: /* set on less or equal */ - { - 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] = (a[0] <= b[0]) ? 1.0F : 0.0F; - result[1] = (a[1] <= b[1]) ? 1.0F : 0.0F; - result[2] = (a[2] <= b[2]) ? 1.0F : 0.0F; - result[3] = (a[3] <= b[3]) ? 1.0F : 0.0F; - store_vector4( inst, machine, result ); - } - break; - case OPCODE_SLT: /* set on less */ - { - 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] = (a[0] < b[0]) ? 1.0F : 0.0F; - result[1] = (a[1] < b[1]) ? 1.0F : 0.0F; - result[2] = (a[2] < b[2]) ? 1.0F : 0.0F; - result[3] = (a[3] < b[3]) ? 1.0F : 0.0F; - store_vector4( inst, machine, result ); - } - break; - case OPCODE_SNE: /* set on not equal */ - { - 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] = (a[0] != b[0]) ? 1.0F : 0.0F; - result[1] = (a[1] != b[1]) ? 1.0F : 0.0F; - result[2] = (a[2] != b[2]) ? 1.0F : 0.0F; - result[3] = (a[3] != b[3]) ? 1.0F : 0.0F; - store_vector4( inst, machine, result ); - } - break; - case 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( ctx, &inst->SrcReg[0], machine, program, a ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, 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_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 OPCODE_SWZ: /* extended swizzle */ - { - const struct prog_src_register *source = &inst->SrcReg[0]; - const GLfloat *src = get_register_pointer(ctx, source, - machine, program); - 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 */ - /* Texel lookup */ - { - /* 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 OPCODE_TXB: /* GL_ARB_fragment_program only */ - /* Texel lookup with LOD bias */ - { - const struct gl_texture_unit *texUnit - = &ctx->Texture.Unit[inst->TexSrcUnit]; - 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 = texUnit->LodBias + coord[3]; - if (texUnit->_Current) - bias += texUnit->_Current->LodBias; - fetch_texel(ctx, coord, lambda + bias, inst->TexSrcUnit, 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( ctx, &inst->SrcReg[0], machine, program, texcoord ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, dtdx ); - fetch_vector4( ctx, &inst->SrcReg[2], machine, program, dtdy ); - fetch_texel_deriv( ctx, texcoord, dtdx, dtdy, 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], 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 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; - GLhalfNV hx, hy; - fetch_vector1( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, 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( ctx, &inst->SrcReg[0], machine, program, a ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, 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 ); - } - break; - 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 ); - fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b ); - fetch_vector4( ctx, &inst->SrcReg[2], machine, program, 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( 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", - inst->Opcode); - return GL_TRUE; /* return value doesn't matter */ - - } - total++; - if (total > MAX_EXEC) { - _mesa_problem(ctx, "Infinite loop detected in fragment program"); - return GL_TRUE; - abort(); - } - } - return GL_TRUE; -} - - -/** * Initialize the virtual fragment program machine state prior to running * fragment program on a fragment. This involves initializing the input * registers, condition codes, etc. @@ -1599,9 +100,9 @@ execute_program( GLcontext *ctx, * \param col which element (column) of the span we'll operate on */ static void -init_machine( GLcontext *ctx, struct fp_machine *machine, - const struct gl_fragment_program *program, - const SWspan *span, GLuint col ) +init_machine(GLcontext *ctx, struct gl_program_machine *machine, + const struct gl_fragment_program *program, + const SWspan *span, GLuint col) { GLuint inputsRead = program->Base.InputsRead; @@ -1616,7 +117,7 @@ init_machine( GLcontext *ctx, struct fp_machine *machine, /* Setup pointer to input attributes */ machine->Attribs = span->array->attribs; - machine->CurFrag = col; + machine->CurElement = col; /* init condition codes */ machine->CondCodes[0] = COND_EQ; @@ -1626,6 +127,9 @@ init_machine( GLcontext *ctx, struct fp_machine *machine, /* init call stack */ machine->StackDepth = 0; + + machine->FetchTexelLod = fetch_texel; + machine->FetchTexelDeriv = fetch_texel_deriv; } @@ -1636,17 +140,16 @@ static void run_program(GLcontext *ctx, SWspan *span, GLuint start, GLuint end) { const struct gl_fragment_program *program = ctx->FragmentProgram._Current; - struct fp_machine machine; + struct gl_program_machine machine; GLuint i; - CurrentMachine = &machine; - for (i = start; i < end; i++) { if (span->array->mask[i]) { init_machine(ctx, &machine, program, span, i); - if (execute_program(ctx, program, program->Base.NumInstructions, - &machine, span, i)) { + if (_mesa_execute_program(ctx, &program->Base, + program->Base.NumInstructions, + &machine, i)) { /* Store result color */ COPY_4V(span->array->attribs[FRAG_ATTRIB_COL0][i], machine.Outputs[FRAG_RESULT_COLR]); @@ -1669,8 +172,6 @@ run_program(GLcontext *ctx, SWspan *span, GLuint start, GLuint end) } } } - - CurrentMachine = NULL; } |