X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fswrast%2Fs_nvfragprog.c;h=028ddc0090ddaa7bf0a73a484fd5397c06e4acbf;hb=249b451d2068c781d29a6527e152b39d08b1c877;hp=3dc9fdde6f9dd543cfdb0b99296f47cf22268ee7;hpb=c2074645cd23e23ff86ed7f0a71845a3209f0bea;p=mesa.git diff --git a/src/mesa/swrast/s_nvfragprog.c b/src/mesa/swrast/s_nvfragprog.c index 3dc9fdde6f9..028ddc0090d 100644 --- a/src/mesa/swrast/s_nvfragprog.c +++ b/src/mesa/swrast/s_nvfragprog.c @@ -41,7 +41,10 @@ #include "s_span.h" -/* if 1, print some debugging info */ +/* See comments below for info about this */ +#define LAMBDA_ZERO 1 + +/* debug predicate */ #define DEBUG_FRAG 0 @@ -53,7 +56,10 @@ struct fp_machine GLfloat Temporaries[MAX_NV_FRAGMENT_PROGRAM_TEMPS][4]; GLfloat Inputs[MAX_NV_FRAGMENT_PROGRAM_INPUTS][4]; GLfloat Outputs[MAX_NV_FRAGMENT_PROGRAM_OUTPUTS][4]; - GLuint CondCodes[4]; + 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[] */ }; @@ -153,40 +159,35 @@ get_register_pointer( GLcontext *ctx, const struct fp_machine *machine, const struct gl_fragment_program *program ) { - const GLfloat *src; switch (source->File) { - case PROGRAM_TEMPORARY: - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_TEMPS); - src = machine->Temporaries[source->Index]; - break; - case PROGRAM_INPUT: - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_INPUTS); - src = machine->Inputs[source->Index]; - break; - case PROGRAM_OUTPUT: - /* This is only for PRINT */ - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_OUTPUTS); - src = machine->Outputs[source->Index]; - break; - case PROGRAM_LOCAL_PARAM: - ASSERT(source->Index < MAX_PROGRAM_LOCAL_PARAMS); - src = program->Base.LocalParams[source->Index]; - break; - case PROGRAM_ENV_PARAM: - ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_PARAMS); - src = ctx->FragmentProgram.Parameters[source->Index]; - break; - case PROGRAM_STATE_VAR: - /* Fallthrough */ - case PROGRAM_NAMED_PARAM: - ASSERT(source->Index < (GLint) program->Base.Parameters->NumParameters); - src = program->Base.Parameters->ParameterValues[source->Index]; - break; - default: - _mesa_problem(ctx, "Invalid input register file %d in fetch_vector4", source->File); - src = NULL; + case PROGRAM_TEMPORARY: + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_TEMPS); + return machine->Temporaries[source->Index]; + case PROGRAM_INPUT: + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_INPUTS); + return machine->Inputs[source->Index]; + case PROGRAM_OUTPUT: + /* This is only for PRINT */ + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_OUTPUTS); + return machine->Outputs[source->Index]; + case PROGRAM_LOCAL_PARAM: + ASSERT(source->Index < MAX_PROGRAM_LOCAL_PARAMS); + return program->Base.LocalParams[source->Index]; + case PROGRAM_ENV_PARAM: + ASSERT(source->Index < MAX_NV_FRAGMENT_PROGRAM_PARAMS); + return ctx->FragmentProgram.Parameters[source->Index]; + case PROGRAM_STATE_VAR: + /* Fallthrough */ + case PROGRAM_CONSTANT: + /* Fallthrough */ + case PROGRAM_NAMED_PARAM: + ASSERT(source->Index < (GLint) program->Base.Parameters->NumParameters); + return program->Base.Parameters->ParameterValues[source->Index]; + default: + _mesa_problem(ctx, "Invalid input register file %d in fp " + "get_register_pointer", source->File); + return NULL; } - return src; } @@ -204,10 +205,17 @@ fetch_vector4( GLcontext *ctx, const GLfloat *src = get_register_pointer(ctx, source, machine, program); ASSERT(src); - 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->Swizzle == MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, + SWIZZLE_Z, SWIZZLE_W)) { + /* no swizzling */ + COPY_4V(result, src); + } + else { + result[0] = src[GET_SWZ(source->Swizzle, 0)]; + result[1] = src[GET_SWZ(source->Swizzle, 1)]; + result[2] = src[GET_SWZ(source->Swizzle, 2)]; + result[3] = src[GET_SWZ(source->Swizzle, 3)]; + } if (source->NegateBase) { result[0] = -result[0]; @@ -406,7 +414,7 @@ generate_cc( float value ) /** * Test if the ccMaskRule is satisfied by the given condition code. - * Used to mask destination writes according to the current condition codee. + * Used to mask destination writes according to the current condition code. */ static INLINE GLboolean test_cc(GLuint condCode, GLuint ccMaskRule) @@ -436,11 +444,9 @@ store_vector4( const struct prog_instruction *inst, { const struct prog_dst_register *dest = &(inst->DstReg); const GLboolean clamp = inst->SaturateMode == SATURATE_ZERO_ONE; - const GLboolean updateCC = inst->CondUpdate; GLfloat *dstReg; GLfloat dummyReg[4]; GLfloat clampedValue[4]; - GLboolean condWriteMask[4]; GLuint writeMask = dest->WriteMask; switch (dest->File) { @@ -458,7 +464,7 @@ store_vector4( const struct prog_instruction *inst, return; } -#if DEBUG_FRAG +#if 0 if (value[0] > 1.0e10 || IS_INF_OR_NAN(value[0]) || IS_INF_OR_NAN(value[1]) || @@ -476,39 +482,46 @@ store_vector4( const struct prog_instruction *inst, } if (dest->CondMask != COND_TR) { - condWriteMask[0] = GET_BIT(writeMask, 0) - && test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 0)], dest->CondMask); - condWriteMask[1] = GET_BIT(writeMask, 1) - && test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 1)], dest->CondMask); - condWriteMask[2] = GET_BIT(writeMask, 2) - && test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 2)], dest->CondMask); - condWriteMask[3] = GET_BIT(writeMask, 3) - && test_cc(machine->CondCodes[GET_SWZ(dest->CondSwizzle, 3)], dest->CondMask); - - writeMask = ((condWriteMask[0] << 0) | - (condWriteMask[1] << 1) | - (condWriteMask[2] << 2) | - (condWriteMask[3] << 3)); + /* 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 (GET_BIT(writeMask, 0)) { + if (writeMask & WRITEMASK_X) dstReg[0] = value[0]; - if (updateCC) - machine->CondCodes[0] = generate_cc(value[0]); - } - if (GET_BIT(writeMask, 1)) { + if (writeMask & WRITEMASK_Y) dstReg[1] = value[1]; - if (updateCC) - machine->CondCodes[1] = generate_cc(value[1]); - } - if (GET_BIT(writeMask, 2)) { + if (writeMask & WRITEMASK_Z) dstReg[2] = value[2]; - if (updateCC) - machine->CondCodes[2] = generate_cc(value[2]); - } - if (GET_BIT(writeMask, 3)) { + if (writeMask & WRITEMASK_W) dstReg[3] = value[3]; - if (updateCC) + + if (inst->CondUpdate) { + if (writeMask & WRITEMASK_X) + machine->CondCodes[0] = generate_cc(value[0]); + if (writeMask & WRITEMASK_Y) + machine->CondCodes[1] = generate_cc(value[1]); + if (writeMask & WRITEMASK_Z) + machine->CondCodes[2] = generate_cc(value[2]); + if (writeMask & WRITEMASK_W) machine->CondCodes[3] = generate_cc(value[3]); } } @@ -639,9 +652,9 @@ execute_program( GLcontext *ctx, { GLuint pc; -#if DEBUG_FRAG - printf("execute fragment program --------------------\n"); -#endif + if (DEBUG_FRAG) { + printf("execute fragment program --------------------\n"); + } for (pc = 0; pc < maxInst; pc++) { const struct prog_instruction *inst = program->Base.Instructions + pc; @@ -653,6 +666,10 @@ execute_program( GLcontext *ctx, ctx->FragmentProgram.CallbackData); } + if (DEBUG_FRAG) { + _mesa_print_instruction(inst); + } + switch (inst->Opcode) { case OPCODE_ABS: { @@ -675,6 +692,43 @@ execute_program( GLcontext *ctx, result[2] = a[2] + b[2]; result[3] = a[3] + b[3]; store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("ADD (%g %g %g %g) = (%g %g %g %g) + (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3]); + } + } + break; + case OPCODE_BRA: /* conditional branch */ + { + /* NOTE: The return is conditional! */ + const GLuint swizzle = inst->DstReg.CondSwizzle; + const GLuint condMask = inst->DstReg.CondMask; + if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) { + /* take branch */ + pc = inst->BranchTarget; + } + } + break; + case OPCODE_CAL: /* Call subroutine */ + { + /* NOTE: The call is conditional! */ + const GLuint swizzle = inst->DstReg.CondSwizzle; + const GLuint condMask = inst->DstReg.CondMask; + if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) { + if (machine->StackDepth >= MAX_PROGRAM_CALL_DEPTH) { + return GL_TRUE; /* Per GL_NV_vertex_program2 spec */ + } + machine->CallStack[machine->StackDepth++] = pc + 1; + pc = inst->BranchTarget; + } } break; case OPCODE_CMP: @@ -694,7 +748,8 @@ execute_program( GLcontext *ctx, { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); - result[0] = result[1] = result[2] = result[3] = (GLfloat)_mesa_cos(a[0]); + result[0] = result[1] = result[2] = result[3] + = (GLfloat) _mesa_cos(a[0]); store_vector4( inst, machine, result ); } break; @@ -748,13 +803,12 @@ execute_program( GLcontext *ctx, GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b ); - result[0] = result[1] = result[2] = result[3] = - a[0] * b[0] + a[1] * b[1] + a[2] * b[2]; + result[0] = result[1] = result[2] = result[3] = DOT3(a, b); store_vector4( inst, machine, result ); -#if DEBUG_FRAG - printf("DP3 %g = (%g %g %g) . (%g %g %g)\n", - result[0], a[0], a[1], a[2], b[0], b[1], b[2]); -#endif + if (DEBUG_FRAG) { + printf("DP3 %g = (%g %g %g) . (%g %g %g)\n", + result[0], a[0], a[1], a[2], b[0], b[1], b[2]); + } } break; case OPCODE_DP4: @@ -762,13 +816,13 @@ execute_program( GLcontext *ctx, GLfloat a[4], b[4], result[4]; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, a ); fetch_vector4( ctx, &inst->SrcReg[1], machine, program, b ); - result[0] = result[1] = result[2] = result[3] = - a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3]; + result[0] = result[1] = result[2] = result[3] = DOT4(a,b); store_vector4( inst, machine, result ); -#if DEBUG_FRAG - printf("DP4 %g = (%g, %g %g %g) . (%g, %g %g %g)\n", - result[0], a[0], a[1], a[2], a[3], b[0], b[1], b[2], b[3]); -#endif + 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: @@ -849,8 +903,7 @@ execute_program( GLcontext *ctx, { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); - result[0] = result[1] = result[2] = result[3] - = LOG2(a[0]); + result[0] = result[1] = result[2] = result[3] = LOG2(a[0]); store_vector4( inst, machine, result ); } break; @@ -877,6 +930,11 @@ execute_program( GLcontext *ctx, } 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: @@ -890,6 +948,14 @@ execute_program( GLcontext *ctx, result[2] = a[2] * b[2] + (1.0F - a[2]) * c[2]; result[3] = a[3] * b[3] + (1.0F - a[3]) * c[3]; store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("LRP (%g %g %g %g) = (%g %g %g %g), " + "(%g %g %g %g), (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3], + c[0], c[1], c[2], c[3]); + } } break; case OPCODE_MAD: @@ -903,6 +969,14 @@ execute_program( GLcontext *ctx, result[2] = a[2] * b[2] + c[2]; result[3] = a[3] * b[3] + c[3]; store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("MAD (%g %g %g %g) = (%g %g %g %g) * " + "(%g %g %g %g) + (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3], + c[0], c[1], c[2], c[3]); + } } break; case OPCODE_MAX: @@ -915,12 +989,12 @@ execute_program( GLcontext *ctx, result[2] = MAX2(a[2], b[2]); result[3] = MAX2(a[3], b[3]); store_vector4( inst, machine, result ); -#if DEBUG_FRAG - printf("MAX (%g %g %g %g) = (%g %g %g %g), (%g %g %g %g)\n", - result[0], result[1], result[2], result[3], - a[0], a[1], a[2], a[3], - b[0], b[1], b[2], b[3]); -#endif + 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: @@ -940,10 +1014,10 @@ execute_program( GLcontext *ctx, 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]); -#endif + if (DEBUG_FRAG) { + printf("MOV (%g %g %g %g)\n", + result[0], result[1], result[2], result[3]); + } } break; case OPCODE_MUL: @@ -956,12 +1030,12 @@ execute_program( GLcontext *ctx, result[2] = a[2] * b[2]; result[3] = a[3] * b[3]; store_vector4( inst, machine, result ); -#if DEBUG_FRAG - printf("MUL (%g %g %g %g) = (%g %g %g %g) * (%g %g %g %g)\n", - result[0], result[1], result[2], result[3], - a[0], a[1], a[2], a[3], - b[0], b[1], b[2], b[3]); -#endif + if (DEBUG_FRAG) { + printf("MUL (%g %g %g %g) = (%g %g %g %g) * (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], + b[0], b[1], b[2], b[3]); + } } break; case OPCODE_PK2H: /* pack two 16-bit floats in one 32-bit float */ @@ -1043,31 +1117,42 @@ execute_program( GLcontext *ctx, { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); -#if DEBUG_FRAG - if (a[0] == 0) - printf("RCP(0)\n"); - else if (IS_INF_OR_NAN(a[0])) - printf("RCP(inf)\n"); -#endif - result[0] = result[1] = result[2] = result[3] - = 1.0F / a[0]; + if (DEBUG_FRAG) { + if (a[0] == 0) + printf("RCP(0)\n"); + else if (IS_INF_OR_NAN(a[0])) + printf("RCP(inf)\n"); + } + result[0] = result[1] = result[2] = result[3] = 1.0F / a[0]; store_vector4( inst, machine, result ); } break; - case OPCODE_RFL: + case OPCODE_RET: /* return from subroutine */ { - GLfloat axis[4], dir[4], result[4], tmp[4]; + /* NOTE: The return is conditional! */ + const GLuint swizzle = inst->DstReg.CondSwizzle; + const GLuint condMask = inst->DstReg.CondMask; + if (test_cc(machine->CondCodes[GET_SWZ(swizzle, 0)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 1)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 2)], condMask) || + test_cc(machine->CondCodes[GET_SWZ(swizzle, 3)], condMask)) { + if (machine->StackDepth == 0) { + return GL_TRUE; /* Per GL_NV_vertex_program2 spec */ + } + pc = machine->CallStack[--machine->StackDepth]; + } + } + break; + case OPCODE_RFL: /* reflection vector */ + { + GLfloat axis[4], dir[4], result[4], tmpX, tmpW; fetch_vector4( ctx, &inst->SrcReg[0], machine, program, axis ); fetch_vector4( ctx, &inst->SrcReg[1], machine, program, dir ); - tmp[3] = axis[0] * axis[0] - + axis[1] * axis[1] - + axis[2] * axis[2]; - tmp[0] = (2.0F * (axis[0] * dir[0] + - axis[1] * dir[1] + - axis[2] * dir[2])) / tmp[3]; - result[0] = tmp[0] * axis[0] - dir[0]; - result[1] = tmp[0] * axis[1] - dir[1]; - result[2] = tmp[0] * axis[2] - dir[2]; + tmpW = DOT3(axis, axis); + tmpX = (2.0F * DOT3(axis, dir)) / tmpW; + result[0] = tmpX * axis[0] - dir[0]; + result[1] = tmpX * axis[1] - dir[1]; + result[2] = tmpX * axis[2] - dir[2]; /* result[3] is never written! XXX enforce in parser! */ store_vector4( inst, machine, result ); } @@ -1079,9 +1164,9 @@ execute_program( GLcontext *ctx, a[0] = FABSF(a[0]); result[0] = result[1] = result[2] = result[3] = INV_SQRTF(a[0]); store_vector4( inst, machine, result ); -#if DEBUG_FRAG - printf("RSQ %g = 1/sqrt(|%g|)\n", result[0], a[0]); -#endif + if (DEBUG_FRAG) { + printf("RSQ %g = 1/sqrt(|%g|)\n", result[0], a[0]); + } } break; case OPCODE_SCS: /* sine and cos */ @@ -1141,8 +1226,8 @@ execute_program( GLcontext *ctx, { GLfloat a[4], result[4]; fetch_vector1( ctx, &inst->SrcReg[0], machine, program, a ); - result[0] = result[1] = result[2] = - result[3] = (GLfloat)_mesa_sin(a[0]); + result[0] = result[1] = result[2] = result[3] + = (GLfloat) _mesa_sin(a[0]); store_vector4( inst, machine, result ); } break; @@ -1198,25 +1283,31 @@ execute_program( GLcontext *ctx, result[2] = a[2] - b[2]; result[3] = a[3] - b[3]; store_vector4( inst, machine, result ); + if (DEBUG_FRAG) { + printf("SUB (%g %g %g %g) = (%g %g %g %g) - (%g %g %g %g)\n", + result[0], result[1], result[2], result[3], + a[0], a[1], a[2], a[3], b[0], b[1], b[2], b[3]); + } } break; - case OPCODE_SWZ: + 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; - - /* do extended swizzling here */ for (i = 0; i < 4; i++) { - if (GET_SWZ(source->Swizzle, i) == SWIZZLE_ZERO) + const GLuint swz = GET_SWZ(source->Swizzle, i); + if (swz == SWIZZLE_ZERO) result[i] = 0.0; - else if (GET_SWZ(source->Swizzle, i) == SWIZZLE_ONE) + else if (swz == SWIZZLE_ONE) result[i] = 1.0; - else - result[i] = src[GET_SWZ(source->Swizzle, i)]; - + else { + ASSERT(swz >= 0); + ASSERT(swz <= 3); + result[i] = src[swz]; + } if (source->NegateBase & (1 << i)) result[i] = -result[i]; } @@ -1226,44 +1317,47 @@ execute_program( GLcontext *ctx, case OPCODE_TEX: /* Both ARB and NV frag prog */ /* Texel lookup */ { - GLfloat texcoord[4], color[4]; - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord ); - /* Note: we pass 0 for LOD. The ARB extension requires it - * while the NV extension says it's implementation dependant. + /* 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). */ - /* KW: Previously lambda was passed as zero, but I - * believe this is incorrect, the spec seems to - * indicate rather that lambda should not be - * changed/biased, unlike TXB where texcoord[3] is - * added to the lambda calculations. The lambda should - * still be calculated normally for TEX & TXP though, - * not set to zero. Otherwise it's very difficult to - * implement normal GL semantics through the fragment - * shader. - */ - fetch_texel( ctx, texcoord, - span->array->lambda[inst->TexSrcUnit][column], - inst->TexSrcUnit, color ); -#if DEBUG_FRAG - if (color[3]) - printf("color[3] = %f\n", color[3]); -#endif + 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 */ { - GLfloat texcoord[4], color[4], bias, lambda; - - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord ); - /* texcoord[3] is the bias to add to lambda */ + GLfloat coord[4], color[4], lambda, bias; + if (inst->SrcReg[0].File == PROGRAM_INPUT && + inst->SrcReg[0].Index == FRAG_ATTRIB_TEX0+inst->TexSrcUnit) + lambda = span->array->lambda[inst->TexSrcUnit][column]; + else + lambda = 0.0; + fetch_vector4(ctx, &inst->SrcReg[0], machine, program, coord); + /* coord[3] is the bias to add to lambda */ bias = ctx->Texture.Unit[inst->TexSrcUnit].LodBias + ctx->Texture.Unit[inst->TexSrcUnit]._Current->LodBias - + texcoord[3]; - lambda = span->array->lambda[inst->TexSrcUnit][column] + bias; - fetch_texel( ctx, texcoord, lambda, - inst->TexSrcUnit, color ); + + coord[3]; + fetch_texel(ctx, coord, lambda + bias, inst->TexSrcUnit, color); store_vector4( inst, machine, color ); } break; @@ -1282,8 +1376,13 @@ execute_program( GLcontext *ctx, case OPCODE_TXP: /* GL_ARB_fragment_program only */ /* Texture lookup w/ projective divide */ { - GLfloat texcoord[4], color[4]; - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord ); + 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. @@ -1293,34 +1392,27 @@ execute_program( GLcontext *ctx, texcoord[1] /= texcoord[3]; texcoord[2] /= texcoord[3]; } - /* KW: Previously lambda was passed as zero, but I - * believe this is incorrect, the spec seems to - * indicate rather that lambda should not be - * changed/biased, unlike TXB where texcoord[3] is - * added to the lambda calculations. The lambda should - * still be calculated normally for TEX & TXP though, - * not set to zero. - */ - fetch_texel( ctx, texcoord, - span->array->lambda[inst->TexSrcUnit][column], - inst->TexSrcUnit, color ); + 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]; - fetch_vector4( ctx, &inst->SrcReg[0], machine, program, texcoord ); + 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, - span->array->lambda[inst->TexSrcUnit][column], - inst->TexSrcUnit, color ); + fetch_texel( ctx, texcoord, lambda, inst->TexSrcUnit, color ); store_vector4( inst, machine, color ); } break; @@ -1466,47 +1558,14 @@ init_machine( GLcontext *ctx, struct fp_machine *machine, wpos[3] = span->w + col * span->dwdx; } if (inputsRead & (1 << FRAG_ATTRIB_COL0)) { - GLfloat *col0 = machine->Inputs[FRAG_ATTRIB_COL0]; ASSERT(span->arrayMask & SPAN_RGBA); - if (span->array->ChanType == GL_UNSIGNED_BYTE) { - GLubyte (*rgba)[4] = span->array->color.sz1.rgba; - col0[0] = UBYTE_TO_FLOAT(rgba[col][RCOMP]); - col0[1] = UBYTE_TO_FLOAT(rgba[col][GCOMP]); - col0[2] = UBYTE_TO_FLOAT(rgba[col][BCOMP]); - col0[3] = UBYTE_TO_FLOAT(rgba[col][ACOMP]); - } - else if (span->array->ChanType == GL_UNSIGNED_SHORT) { - GLushort (*rgba)[4] = span->array->color.sz2.rgba; - col0[0] = USHORT_TO_FLOAT(rgba[col][RCOMP]); - col0[1] = USHORT_TO_FLOAT(rgba[col][GCOMP]); - col0[2] = USHORT_TO_FLOAT(rgba[col][BCOMP]); - col0[3] = USHORT_TO_FLOAT(rgba[col][ACOMP]); - } - else { - GLfloat (*rgba)[4] = span->array->color.sz4.rgba; - COPY_4V(col0, rgba[col]); - } + COPY_4V(machine->Inputs[FRAG_ATTRIB_COL0], + span->array->color.sz4.rgba[col]); } if (inputsRead & (1 << FRAG_ATTRIB_COL1)) { - GLfloat *col1 = machine->Inputs[FRAG_ATTRIB_COL1]; - if (span->array->ChanType == GL_UNSIGNED_BYTE) { - GLubyte (*rgba)[4] = span->array->color.sz1.spec; - col1[0] = UBYTE_TO_FLOAT(rgba[col][RCOMP]); - col1[1] = UBYTE_TO_FLOAT(rgba[col][GCOMP]); - col1[2] = UBYTE_TO_FLOAT(rgba[col][BCOMP]); - col1[3] = UBYTE_TO_FLOAT(rgba[col][ACOMP]); - } - else if (span->array->ChanType == GL_UNSIGNED_SHORT) { - GLushort (*rgba)[4] = span->array->color.sz2.spec; - col1[0] = USHORT_TO_FLOAT(rgba[col][RCOMP]); - col1[1] = USHORT_TO_FLOAT(rgba[col][GCOMP]); - col1[2] = USHORT_TO_FLOAT(rgba[col][BCOMP]); - col1[3] = USHORT_TO_FLOAT(rgba[col][ACOMP]); - } - else { - GLfloat (*rgba)[4] = span->array->color.sz4.spec; - COPY_4V(col1, rgba[col]); - } + ASSERT(span->arrayMask & SPAN_SPEC); + COPY_4V(machine->Inputs[FRAG_ATTRIB_COL1], + span->array->color.sz4.spec[col]); } if (inputsRead & (1 << FRAG_ATTRIB_FOGC)) { GLfloat *fogc = machine->Inputs[FRAG_ATTRIB_FOGC]; @@ -1530,6 +1589,9 @@ init_machine( GLcontext *ctx, struct fp_machine *machine, machine->CondCodes[1] = COND_EQ; machine->CondCodes[2] = COND_EQ; machine->CondCodes[3] = COND_EQ; + + /* init call stack */ + machine->StackDepth = 0; } @@ -1549,42 +1611,26 @@ run_program(GLcontext *ctx, SWspan *span, GLuint start, GLuint end) if (span->array->mask[i]) { init_machine(ctx, &machine, program, span, i); - if (!execute_program(ctx, program, ~0, &machine, span, i)) { - span->array->mask[i] = GL_FALSE; /* killed fragment */ - span->writeAll = GL_FALSE; - } - - /* Store output registers */ - { - const GLfloat *colOut = machine.Outputs[FRAG_RESULT_COLR]; - if (span->array->ChanType == GL_UNSIGNED_BYTE) { - GLubyte (*rgba)[4] = span->array->color.sz1.rgba; - UNCLAMPED_FLOAT_TO_UBYTE(rgba[i][RCOMP], colOut[0]); - UNCLAMPED_FLOAT_TO_UBYTE(rgba[i][GCOMP], colOut[1]); - UNCLAMPED_FLOAT_TO_UBYTE(rgba[i][BCOMP], colOut[2]); - UNCLAMPED_FLOAT_TO_UBYTE(rgba[i][ACOMP], colOut[3]); - } - else if (span->array->ChanType == GL_UNSIGNED_BYTE) { - GLushort (*rgba)[4] = span->array->color.sz2.rgba; - UNCLAMPED_FLOAT_TO_USHORT(rgba[i][RCOMP], colOut[0]); - UNCLAMPED_FLOAT_TO_USHORT(rgba[i][GCOMP], colOut[1]); - UNCLAMPED_FLOAT_TO_USHORT(rgba[i][BCOMP], colOut[2]); - UNCLAMPED_FLOAT_TO_USHORT(rgba[i][ACOMP], colOut[3]); - } - else { - GLfloat (*rgba)[4] = span->array->color.sz4.rgba; - COPY_4V(rgba[i], colOut); + if (execute_program(ctx, program, ~0, &machine, span, i)) { + /* Store result color */ + COPY_4V(span->array->color.sz4.rgba[i], + machine.Outputs[FRAG_RESULT_COLR]); + + /* Store result depth/z */ + if (program->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR)) { + const GLfloat depth = machine.Outputs[FRAG_RESULT_DEPR][2]; + if (depth <= 0.0) + span->array->z[i] = 0; + else if (depth >= 1.0) + span->array->z[i] = ctx->DrawBuffer->_DepthMax; + else + span->array->z[i] = IROUND(depth * ctx->DrawBuffer->_DepthMaxF); } } - /* depth value */ - if (program->Base.OutputsWritten & (1 << FRAG_RESULT_DEPR)) { - const GLfloat depth = machine.Outputs[FRAG_RESULT_DEPR][2]; - if (depth <= 0.0) - span->array->z[i] = 0; - else if (depth >= 1.0) - span->array->z[i] = ctx->DrawBuffer->_DepthMax; - else - span->array->z[i] = IROUND(depth * ctx->DrawBuffer->_DepthMaxF); + else { + /* killed fragment */ + span->array->mask[i] = GL_FALSE; + span->writeAll = GL_FALSE; } } } @@ -1602,11 +1648,10 @@ _swrast_exec_fragment_program( GLcontext *ctx, SWspan *span ) { const struct gl_fragment_program *program = ctx->FragmentProgram._Current; - ctx->_CurrentProgram = GL_FRAGMENT_PROGRAM_ARB; /* or NV, doesn't matter */ + /* incoming colors should be floats */ + ASSERT(span->array->ChanType == GL_FLOAT); - if (program->Base.Parameters) { - _mesa_load_state_parameters(ctx, program->Base.Parameters); - } + ctx->_CurrentProgram = GL_FRAGMENT_PROGRAM_ARB; /* or NV, doesn't matter */ run_program(ctx, span, 0, span->end);