--- /dev/null
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.3
+ *
+ * Copyright (C) 1999-2004 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 t_arb_program.c
+ * Compile vertex programs to an intermediate representation.
+ * Execute vertex programs over a buffer of vertices.
+ * \author Keith Whitwell, Brian Paul
+ */
+
+#include "glheader.h"
+#include "context.h"
+#include "imports.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "arbprogparse.h"
+#include "program.h"
+#include "math/m_matrix.h"
+#include "math/m_translate.h"
+#include "t_context.h"
+#include "t_pipeline.h"
+
+
+
+
+/* New, internal instructions:
+ */
+#define IN1 (VP_OPCODE_XPD+1)
+#define IN2 (IN1+1) /* intput-to-reg MOV */
+#define IN3 (IN1+2)
+#define IN4 (IN1+3)
+#define OUT (IN1+4) /* reg-to-output MOV */
+#define OUM (IN1+5) /* reg-to-output MOV with mask */
+#define RSW (IN1+6)
+#define MSK (IN1+7) /* reg-to-reg MOV with mask */
+#define PAR (IN1+8) /* parameter-to-reg MOV */
+#define PRL (IN1+9) /* parameter-to-reg MOV */
+
+
+/* Layout of register file:
+
+ 0 -- Scratch (Arg0)
+ 1 -- Scratch (Arg1)
+ 2 -- Scratch (Arg2)
+ 3 -- Scratch (Result)
+ 4 -- Program Temporary 0
+ ..
+ 31 -- Program Temporary 27
+ 32 -- State/Input/Const shadow 0
+ ..
+ 63 -- State/Input/Const shadow 31
+
+*/
+
+
+
+#define REG_ARG0 0
+#define REG_ARG1 1
+#define REG_ARG2 2
+#define REG_RES 3
+#define REG_TMP0 4
+#define REG_TMP_MAX 32
+#define REG_TMP_NR (REG_TMP_MAX-REG_TMP0)
+#define REG_PAR0 32
+#define REG_PAR_MAX 64
+#define REG_PAR_NR (REG_PAR_MAX-REG_PAR0)
+
+#define REG_MAX 64
+#define REG_SWZDST_MAX 16
+
+/* ARB_vp instructions are broken down into one or more of the
+ * following micro-instructions, each representable in a 32 bit packed
+ * structure.
+ */
+
+
+union instruction {
+ struct {
+ GLuint opcode:6;
+ GLuint dst:5;
+ GLuint arg0:6;
+ GLuint arg1:6;
+ GLuint elt:2; /* x,y,z or w */
+ GLuint pad:7;
+ } scl;
+
+
+ struct {
+ GLuint opcode:6;
+ GLuint dst:5;
+ GLuint arg0:6;
+ GLuint arg1:6;
+ GLuint arg2:6;
+ GLuint pad:3;
+ } vec;
+
+ struct {
+ GLuint opcode:6;
+ GLuint dst:4; /* NOTE! REG 0..16 only! */
+ GLuint arg0:6;
+ GLuint neg:4;
+ GLuint swz:12;
+ } swz;
+
+ struct {
+ GLuint opcode:6;
+ GLuint dst:6;
+ GLuint arg0:6;
+ GLuint neg:1; /* 1 bit only */
+ GLuint swz:8; /* xyzw only */
+ GLuint pad:5;
+ } rsw;
+
+ struct {
+ GLuint opcode:6;
+ GLuint reg:6;
+ GLuint file:5;
+ GLuint idx:8; /* plenty? */
+ GLuint rel:1;
+ GLuint pad:6;
+ } inr;
+
+
+ struct {
+ GLuint opcode:6;
+ GLuint reg:6;
+ GLuint file:5;
+ GLuint idx:8; /* plenty? */
+ GLuint mask:4;
+ GLuint pad:3;
+ } out;
+
+ struct {
+ GLuint opcode:6;
+ GLuint dst:5;
+ GLuint arg0:6;
+ GLuint mask:4;
+ GLuint pad:11;
+ } msk;
+
+ GLuint dword;
+};
+
+
+
+struct compilation {
+ struct {
+ GLuint file:5;
+ GLuint idx:8;
+ } reg[REG_PAR_NR];
+
+ GLuint par_active;
+ GLuint par_protected;
+ GLuint tmp_active;
+
+ union instruction *csr;
+
+ struct vertex_buffer *VB; /* for input sizes! */
+};
+
+/*--------------------------------------------------------------------------- */
+
+/*!
+ * Private storage for the vertex program pipeline stage.
+ */
+struct arb_vp_machine {
+ GLfloat reg[REG_MAX][4]; /* Program temporaries, shadowed parameters and inputs,
+ plus some internal values */
+
+ GLfloat (*File[8])[4]; /* Src/Dest for PAR/PRL instructions. */
+ GLint AddressReg;
+
+ union instruction store[1024];
+/* GLuint store_size; */
+
+ union instruction *instructions;
+ GLint nr_instructions;
+
+ GLvector4f attribs[VERT_RESULT_MAX]; /**< result vectors. */
+ GLvector4f ndcCoords; /**< normalized device coords */
+ GLubyte *clipmask; /**< clip flags */
+ GLubyte ormask, andmask; /**< for clipping */
+
+ GLuint vtx_nr; /**< loop counter */
+
+ struct vertex_buffer *VB;
+ GLcontext *ctx;
+};
+
+
+/*--------------------------------------------------------------------------- */
+
+struct opcode_info {
+ GLuint type;
+ GLuint nr_args;
+ const char *string;
+ void (*func)( struct arb_vp_machine *, union instruction );
+ void (*print)( union instruction , const struct opcode_info * );
+};
+
+
+#define ARB_VP_MACHINE(stage) ((struct arb_vp_machine *)(stage->privatePtr))
+
+
+
+/**
+ * Set x to positive or negative infinity.
+ *
+ * XXX: FIXME - type punning.
+ */
+#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
+#define IS_INF_OR_NAN(t) ((t) == __MAXFLOAT)
+#else
+#define SET_POS_INFINITY(x) x = (GLfloat) HUGE_VAL
+#define SET_NEG_INFINITY(x) x = (GLfloat) -HUGE_VAL
+#endif
+
+#define FREXPF(a,b) frexpf(a,b)
+
+#define PUFF(x) ((x)[1] = (x)[2] = (x)[3] = (x)[0])
+
+/* FIXME: more type punning (despite use of fi_type...)
+ */
+#define SET_FLOAT_BITS(x, bits) ((fi_type *) (void *) &(x))->i = bits
+
+
+static GLfloat RoughApproxLog2(GLfloat t)
+{
+ return LOG2(t);
+}
+
+static GLfloat RoughApproxPow2(GLfloat t)
+{
+ GLfloat q;
+#ifdef USE_IEEE
+ GLint ii = (GLint) t;
+ ii = (ii < 23) + 0x3f800000;
+ SET_FLOAT_BITS(q, ii);
+ q = *((GLfloat *) (void *)&ii);
+#else
+ q = (GLfloat) pow(2.0, floor_t0);
+#endif
+ return q;
+}
+
+static GLfloat RoughApproxPower(GLfloat x, GLfloat y)
+{
+#if 0
+ return (GLfloat) exp(y * log(x));
+#else
+ return (GLfloat) _mesa_pow(x, y);
+#endif
+}
+
+
+static const GLfloat ZeroVec[4] = { 0.0F, 0.0F, 0.0F, 0.0F };
+
+
+
+
+/**
+ * This is probably the least-optimal part of the process, have to
+ * multiply out the stride to access each incoming input value.
+ */
+static GLfloat *get_input( struct arb_vp_machine *m, GLuint index )
+{
+ return VEC_ELT(m->VB->AttribPtr[index], GLfloat, m->vtx_nr);
+}
+
+
+/**
+ * Fetch a 4-element float vector from the given source register.
+ * Deal with the possibility that not all elements are present.
+ */
+static void do_IN1( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.inr.reg];
+ const GLfloat *src = get_input(m, op.inr.idx);
+
+ result[0] = src[0];
+ result[1] = 0;
+ result[2] = 0;
+ result[3] = 1;
+}
+
+static void do_IN2( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.inr.reg];
+ const GLfloat *src = get_input(m, op.inr.idx);
+
+ result[0] = src[0];
+ result[1] = src[1];
+ result[2] = 0;
+ result[3] = 1;
+}
+
+static void do_IN3( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.inr.reg];
+ const GLfloat *src = get_input(m, op.inr.idx);
+
+ result[0] = src[0];
+ result[1] = src[1];
+ result[2] = src[2];
+ result[3] = 1;
+}
+
+static void do_IN4( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.inr.reg];
+ const GLfloat *src = get_input(m, op.inr.idx);
+
+ result[0] = src[0];
+ result[1] = src[1];
+ result[2] = src[2];
+ result[3] = src[3];
+}
+
+/**
+ * Perform a reduced swizzle:
+ */
+static void do_RSW( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.rsw.dst];
+ const GLfloat *arg0 = m->reg[op.rsw.arg0];
+ GLuint swz = op.rsw.swz;
+ GLuint neg = op.rsw.neg;
+ GLuint i;
+
+ if (neg)
+ for (i = 0; i < 4; i++, swz >>= 2)
+ result[i] = -arg0[swz & 0x3];
+ else
+ for (i = 0; i < 4; i++, swz >>= 2)
+ result[i] = arg0[swz & 0x3];
+}
+
+
+
+/**
+ * Store 4 floats into an external address.
+ */
+static void do_OUM( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *dst = m->attribs[op.out.idx].data[m->vtx_nr];
+ const GLfloat *value = m->reg[op.out.reg];
+
+ if (op.out.mask & 0x1) dst[0] = value[0];
+ if (op.out.mask & 0x2) dst[1] = value[1];
+ if (op.out.mask & 0x4) dst[2] = value[2];
+ if (op.out.mask & 0x8) dst[3] = value[3];
+}
+
+static void do_OUT( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *dst = m->attribs[op.out.idx].data[m->vtx_nr];
+ const GLfloat *value = m->reg[op.out.reg];
+
+ dst[0] = value[0];
+ dst[1] = value[1];
+ dst[2] = value[2];
+ dst[3] = value[3];
+}
+
+/* Register-to-register MOV with writemask.
+ */
+static void do_MSK( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *dst = m->reg[op.msk.dst];
+ const GLfloat *arg0 = m->reg[op.msk.arg0];
+
+ if (op.msk.mask & 0x1) dst[0] = arg0[0];
+ if (op.msk.mask & 0x2) dst[1] = arg0[1];
+ if (op.msk.mask & 0x4) dst[2] = arg0[2];
+ if (op.msk.mask & 0x8) dst[3] = arg0[3];
+}
+
+
+/* Retreive parameters and other constant values:
+ */
+static void do_PAR( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.inr.reg];
+ const GLfloat *src = m->File[op.inr.file][op.inr.idx];
+
+ result[0] = src[0];
+ result[1] = src[1];
+ result[2] = src[2];
+ result[3] = src[3];
+}
+
+
+#define RELADDR_MASK MAX_NV_VERTEX_PROGRAM_PARAMS
+
+static void do_PRL( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.inr.reg];
+ GLuint index = (op.inr.idx + m->AddressReg) & RELADDR_MASK;
+ const GLfloat *src = m->File[op.inr.file][index];
+
+ result[0] = src[0];
+ result[1] = src[1];
+ result[2] = src[2];
+ result[3] = src[3];
+}
+
+static void do_PRT( struct arb_vp_machine *m, union instruction op )
+{
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+
+ _mesa_printf("%d: %f %f %f %f\n", m->vtx_nr,
+ arg0[0], arg0[1], arg0[2], arg0[3]);
+}
+
+
+/**
+ * The traditional ALU and texturing instructions. All operate on
+ * internal registers and ignore write masks and swizzling issues.
+ */
+
+static void do_ABS( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+
+ result[0] = (arg0[0] < 0.0) ? -arg0[0] : arg0[0];
+ result[1] = (arg0[1] < 0.0) ? -arg0[1] : arg0[1];
+ result[2] = (arg0[2] < 0.0) ? -arg0[2] : arg0[2];
+ result[3] = (arg0[3] < 0.0) ? -arg0[3] : arg0[3];
+}
+
+static void do_ADD( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+
+ result[0] = arg0[0] + arg1[0];
+ result[1] = arg0[1] + arg1[1];
+ result[2] = arg0[2] + arg1[2];
+ result[3] = arg0[3] + arg1[3];
+}
+
+
+static void do_ARL( struct arb_vp_machine *m, union instruction op )
+{
+ const GLfloat *arg0 = m->reg[op.out.reg];
+ m->AddressReg = (GLint) floor(arg0[0]);
+}
+
+
+static void do_DP3( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.scl.dst];
+ const GLfloat *arg0 = m->reg[op.scl.arg0];
+ const GLfloat *arg1 = m->reg[op.scl.arg1];
+
+ result[0] = (arg0[0] * arg1[0] +
+ arg0[1] * arg1[1] +
+ arg0[2] * arg1[2]);
+
+ PUFF(result);
+}
+
+static void do_DP4( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.scl.dst];
+ const GLfloat *arg0 = m->reg[op.scl.arg0];
+ const GLfloat *arg1 = m->reg[op.scl.arg1];
+
+ result[0] = (arg0[0] * arg1[0] +
+ arg0[1] * arg1[1] +
+ arg0[2] * arg1[2] +
+ arg0[3] * arg1[3]);
+
+ PUFF(result);
+}
+
+static void do_DPH( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.scl.dst];
+ const GLfloat *arg0 = m->reg[op.scl.arg0];
+ const GLfloat *arg1 = m->reg[op.scl.arg1];
+
+ result[0] = (arg0[0] * arg1[0] +
+ arg0[1] * arg1[1] +
+ arg0[2] * arg1[2] +
+ 1.0 * arg1[3]);
+
+ PUFF(result);
+}
+
+static void do_DST( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+
+ result[0] = 1.0F;
+ result[1] = arg0[1] * arg1[1];
+ result[2] = arg0[2];
+ result[3] = arg1[3];
+}
+
+
+static void do_EX2( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.scl.dst];
+ const GLfloat *arg0 = m->reg[op.scl.arg0];
+
+ result[0] = (GLfloat)RoughApproxPow2(arg0[0]);
+ PUFF(result);
+}
+
+static void do_EXP( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ GLfloat tmp = arg0[0];
+ GLfloat flr_tmp = FLOORF(tmp);
+
+ /* KW: previous definition of this instruction was really messed
+ * up... Maybe the nv instruction is quite different?
+ */
+ result[0] = (GLfloat) (1 << (int)flr_tmp);
+ result[1] = tmp - flr_tmp;
+ result[2] = RoughApproxPow2(tmp);
+ result[3] = 1.0F;
+}
+
+static void do_FLR( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+
+ result[0] = FLOORF(arg0[0]);
+ result[1] = FLOORF(arg0[1]);
+ result[2] = FLOORF(arg0[2]);
+ result[3] = FLOORF(arg0[3]);
+}
+
+static void do_FRC( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+
+ result[0] = arg0[0] - FLOORF(arg0[0]);
+ result[1] = arg0[1] - FLOORF(arg0[1]);
+ result[2] = arg0[2] - FLOORF(arg0[2]);
+ result[3] = arg0[3] - FLOORF(arg0[3]);
+}
+
+static void do_LG2( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.scl.dst];
+ const GLfloat *arg0 = m->reg[op.scl.arg0];
+
+ result[0] = RoughApproxLog2(arg0[0]);
+ PUFF(result);
+}
+
+
+
+static void do_LIT( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+
+ const GLfloat epsilon = 1.0F / 256.0F; /* per NV spec */
+ GLfloat tmp[4];
+
+ tmp[0] = MAX2(arg0[0], 0.0F);
+ tmp[1] = MAX2(arg0[1], 0.0F);
+ tmp[3] = CLAMP(arg0[3], -(128.0F - epsilon), (128.0F - epsilon));
+
+ result[0] = 1.0;
+ result[1] = tmp[0];
+ result[2] = (tmp[0] > 0.0) ? RoughApproxPower(tmp[1], tmp[3]) : 0.0F;
+ result[3] = 1.0;
+}
+
+
+static void do_LOG( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ GLfloat tmp = FABSF(arg0[0]);
+ int exponent;
+ GLfloat mantissa = FREXPF(tmp, &exponent);
+
+ result[0] = (GLfloat) (exponent - 1);
+ result[1] = 2.0 * mantissa; /* map [.5, 1) -> [1, 2) */
+ result[2] = result[0] + LOG2(result[1]);
+ result[3] = 1.0;
+}
+
+
+static void do_MAD( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+ const GLfloat *arg2 = m->reg[op.vec.arg2];
+
+ result[0] = arg0[0] * arg1[0] + arg2[0];
+ result[1] = arg0[1] * arg1[1] + arg2[1];
+ result[2] = arg0[2] * arg1[2] + arg2[2];
+ result[3] = arg0[3] * arg1[3] + arg2[3];
+}
+
+static void do_MAX( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+
+ result[0] = (arg0[0] > arg1[0]) ? arg0[0] : arg1[0];
+ result[1] = (arg0[1] > arg1[1]) ? arg0[1] : arg1[1];
+ result[2] = (arg0[2] > arg1[2]) ? arg0[2] : arg1[2];
+ result[3] = (arg0[3] > arg1[3]) ? arg0[3] : arg1[3];
+}
+
+
+static void do_MIN( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+
+ result[0] = (arg0[0] < arg1[0]) ? arg0[0] : arg1[0];
+ result[1] = (arg0[1] < arg1[1]) ? arg0[1] : arg1[1];
+ result[2] = (arg0[2] < arg1[2]) ? arg0[2] : arg1[2];
+ result[3] = (arg0[3] < arg1[3]) ? arg0[3] : arg1[3];
+}
+
+static void do_MOV( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+
+ result[0] = arg0[0];
+ result[1] = arg0[1];
+ result[2] = arg0[2];
+ result[3] = arg0[3];
+}
+
+static void do_MUL( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+
+ result[0] = arg0[0] * arg1[0];
+ result[1] = arg0[1] * arg1[1];
+ result[2] = arg0[2] * arg1[2];
+ result[3] = arg0[3] * arg1[3];
+}
+
+
+static void do_POW( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.scl.dst];
+ const GLfloat *arg0 = m->reg[op.scl.arg0];
+ const GLfloat *arg1 = m->reg[op.scl.arg1];
+
+ result[0] = (GLfloat)RoughApproxPower(arg0[0], arg1[0]);
+ PUFF(result);
+}
+
+static void do_RCP( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.scl.dst];
+ const GLfloat *arg0 = m->reg[op.scl.arg0];
+
+ result[0] = 1.0F / arg0[0];
+ PUFF(result);
+}
+
+static void do_RSQ( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.scl.dst];
+ const GLfloat *arg0 = m->reg[op.scl.arg0];
+
+ result[0] = INV_SQRTF(FABSF(arg0[0]));
+ PUFF(result);
+}
+
+
+static void do_SGE( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+
+ result[0] = (arg0[0] >= arg1[0]) ? 1.0F : 0.0F;
+ result[1] = (arg0[1] >= arg1[1]) ? 1.0F : 0.0F;
+ result[2] = (arg0[2] >= arg1[2]) ? 1.0F : 0.0F;
+ result[3] = (arg0[3] >= arg1[3]) ? 1.0F : 0.0F;
+}
+
+
+static void do_SLT( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+
+ result[0] = (arg0[0] < arg1[0]) ? 1.0F : 0.0F;
+ result[1] = (arg0[1] < arg1[1]) ? 1.0F : 0.0F;
+ result[2] = (arg0[2] < arg1[2]) ? 1.0F : 0.0F;
+ result[3] = (arg0[3] < arg1[3]) ? 1.0F : 0.0F;
+}
+
+static void do_SWZ( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.swz.dst];
+ const GLfloat *arg0 = m->reg[op.swz.arg0];
+ GLuint swz = op.swz.swz;
+ GLuint neg = op.swz.neg;
+ GLuint i;
+
+ for (i = 0; i < 4; i++, swz >>= 3, neg >>= 1) {
+ switch (swz & 0x7) {
+ case SWIZZLE_ZERO: result[i] = 0.0; break;
+ case SWIZZLE_ONE: result[i] = 1.0; break;
+ default: result[i] = arg0[swz & 0x7]; break;
+ }
+ if (neg & 0x1) result[i] = -result[i];
+ }
+}
+
+static void do_SUB( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+
+ result[0] = arg0[0] - arg1[0];
+ result[1] = arg0[1] - arg1[1];
+ result[2] = arg0[2] - arg1[2];
+ result[3] = arg0[3] - arg1[3];
+}
+
+
+static void do_XPD( struct arb_vp_machine *m, union instruction op )
+{
+ GLfloat *result = m->reg[op.vec.dst];
+ const GLfloat *arg0 = m->reg[op.vec.arg0];
+ const GLfloat *arg1 = m->reg[op.vec.arg1];
+
+ result[0] = arg0[1] * arg1[2] - arg0[2] * arg1[1];
+ result[1] = arg0[2] * arg1[0] - arg0[0] * arg1[2];
+ result[2] = arg0[0] * arg1[1] - arg0[1] * arg1[0];
+}
+
+static void do_NOP( struct arb_vp_machine *m, union instruction op )
+{
+}
+
+/* Some useful debugging functions:
+ */
+static void print_reg( GLuint reg )
+{
+ if (reg == REG_RES)
+ _mesa_printf("RES");
+ else if (reg >= REG_ARG0 && reg <= REG_ARG2)
+ _mesa_printf("ARG%d", reg - REG_ARG0);
+ else if (reg >= REG_TMP0 && reg < REG_TMP_MAX)
+ _mesa_printf("TMP%d", reg - REG_TMP0);
+ else if (reg >= REG_PAR0 && reg < REG_PAR_MAX)
+ _mesa_printf("PAR%d", reg - REG_PAR0);
+ else
+ _mesa_printf("???");
+}
+
+static void print_mask( GLuint mask )
+{
+ _mesa_printf(".");
+ if (mask&0x1) _mesa_printf("x");
+ if (mask&0x2) _mesa_printf("y");
+ if (mask&0x4) _mesa_printf("z");
+ if (mask&0x8) _mesa_printf("w");
+}
+
+static void print_extern( GLuint file, GLuint idx )
+{
+ static const char *reg_file[] = {
+ "TEMPORARY",
+ "INPUT",
+ "OUTPUT",
+ "LOCAL_PARAM",
+ "ENV_PARAM",
+ "NAMED_PARAM",
+ "STATE_VAR",
+ "WRITE_ONLY",
+ "ADDRESS"
+ };
+
+ _mesa_printf("%s:%d", reg_file[file], idx);
+}
+
+
+
+static void print_SWZ( union instruction op, const struct opcode_info *info )
+{
+ GLuint swz = op.swz.swz;
+ GLuint neg = op.swz.neg;
+ GLuint i;
+
+ _mesa_printf("%s ", info->string);
+ print_reg(op.swz.dst);
+ _mesa_printf(", ");
+ print_reg(op.swz.arg0);
+ _mesa_printf(".");
+ for (i = 0; i < 4; i++, swz >>= 3, neg >>= 1) {
+ const char *cswz = "xyzw01??";
+ if (neg & 0x1)
+ _mesa_printf("-");
+ _mesa_printf("%c", cswz[swz&0x7]);
+ }
+ _mesa_printf("\n");
+}
+
+static void print_RSW( union instruction op, const struct opcode_info *info )
+{
+ GLuint swz = op.rsw.swz;
+ GLuint neg = op.rsw.neg;
+ GLuint i;
+
+ _mesa_printf("%s ", info->string);
+ print_reg(op.rsw.dst);
+ _mesa_printf(", ");
+ print_reg(op.rsw.arg0);
+ _mesa_printf(".");
+ for (i = 0; i < 4; i++, swz >>= 2) {
+ const char *cswz = "xyzw";
+ if (neg)
+ _mesa_printf("-");
+ _mesa_printf("%c", cswz[swz&0x3]);
+ }
+ _mesa_printf("\n");
+}
+
+
+static void print_SCL( union instruction op, const struct opcode_info *info )
+{
+ _mesa_printf("%s ", info->string);
+ print_reg(op.scl.dst);
+ _mesa_printf(", ");
+ print_reg(op.scl.arg0);
+ if (info->nr_args > 1) {
+ _mesa_printf(", ");
+ print_reg(op.scl.arg1);
+ }
+ _mesa_printf("\n");
+}
+
+
+static void print_VEC( union instruction op, const struct opcode_info *info )
+{
+ _mesa_printf("%s ", info->string);
+ print_reg(op.vec.dst);
+ _mesa_printf(", ");
+ print_reg(op.vec.arg0);
+ if (info->nr_args > 1) {
+ _mesa_printf(", ");
+ print_reg(op.vec.arg1);
+ }
+ if (info->nr_args > 2) {
+ _mesa_printf(", ");
+ print_reg(op.vec.arg2);
+ }
+ _mesa_printf("\n");
+}
+
+static void print_MSK( union instruction op, const struct opcode_info *info )
+{
+ _mesa_printf("%s ", info->string);
+ print_reg(op.msk.dst);
+ print_mask(op.msk.mask);
+ _mesa_printf(", ");
+ print_reg(op.msk.arg0);
+ _mesa_printf("\n");
+}
+
+static void print_IN( union instruction op, const struct opcode_info *info )
+{
+ _mesa_printf("%s ", info->string);
+ print_reg(op.inr.reg);
+ _mesa_printf(", ");
+ print_extern(op.inr.file, op.inr.idx);
+ _mesa_printf("\n");
+}
+
+static void print_OUT( union instruction op, const struct opcode_info *info )
+{
+ _mesa_printf("%s ", info->string);
+ print_extern(op.out.file, op.out.idx);
+ if (op.out.opcode == OUM)
+ print_mask(op.out.mask);
+ _mesa_printf(", ");
+ print_reg(op.out.reg);
+ _mesa_printf("\n");
+}
+
+static void print_NOP( union instruction op, const struct opcode_info *info )
+{
+}
+
+#define NOP 0
+#define VEC 1
+#define SCL 2
+#define SWZ 3
+
+static const struct opcode_info opcode_info[] =
+{
+ { VEC, 1, "ABS", do_ABS, print_VEC },
+ { VEC, 2, "ADD", do_ADD, print_VEC },
+ { OUT, 1, "ARL", do_ARL, print_OUT },
+ { SCL, 2, "DP3", do_DP3, print_SCL },
+ { SCL, 2, "DP4", do_DP4, print_SCL },
+ { SCL, 2, "DPH", do_DPH, print_SCL },
+ { VEC, 2, "DST", do_DST, print_VEC },
+ { NOP, 0, "END", do_NOP, print_NOP },
+ { SCL, 1, "EX2", do_EX2, print_VEC },
+ { VEC, 1, "EXP", do_EXP, print_VEC },
+ { VEC, 1, "FLR", do_FLR, print_VEC },
+ { VEC, 1, "FRC", do_FRC, print_VEC },
+ { SCL, 1, "LG2", do_LG2, print_VEC },
+ { VEC, 1, "LIT", do_LIT, print_VEC },
+ { VEC, 1, "LOG", do_LOG, print_VEC },
+ { VEC, 3, "MAD", do_MAD, print_VEC },
+ { VEC, 2, "MAX", do_MAX, print_VEC },
+ { VEC, 2, "MIN", do_MIN, print_VEC },
+ { VEC, 1, "MOV", do_MOV, print_VEC },
+ { VEC, 2, "MUL", do_MUL, print_VEC },
+ { SCL, 2, "POW", do_POW, print_VEC },
+ { VEC, 1, "PRT", do_PRT, print_VEC }, /* PRINT */
+ { NOP, 1, "RCC", do_NOP, print_NOP },
+ { SCL, 1, "RCP", do_RCP, print_VEC },
+ { SCL, 1, "RSQ", do_RSQ, print_VEC },
+ { VEC, 2, "SGE", do_SGE, print_VEC },
+ { VEC, 2, "SLT", do_SLT, print_VEC },
+ { VEC, 2, "SUB", do_SUB, print_VEC },
+ { SWZ, 1, "SWZ", do_SWZ, print_SWZ },
+ { VEC, 2, "XPD", do_XPD, print_VEC },
+ { IN4, 1, "IN1", do_IN1, print_IN }, /* Internals */
+ { IN4, 1, "IN2", do_IN2, print_IN },
+ { IN4, 1, "IN3", do_IN3, print_IN },
+ { IN4, 1, "IN4", do_IN4, print_IN },
+ { OUT, 1, "OUT", do_OUT, print_OUT },
+ { OUT, 1, "OUM", do_OUM, print_OUT },
+ { SWZ, 1, "RSW", do_RSW, print_RSW },
+ { MSK, 1, "MSK", do_MSK, print_MSK },
+ { IN4, 1, "PAR", do_PAR, print_IN },
+ { IN4, 1, "PRL", do_PRL, print_IN },
+};
+
+
+static GLuint cvp_load_reg( struct compilation *cp,
+ GLuint file,
+ GLuint index,
+ GLuint rel )
+{
+ GLuint i, op;
+
+ if (file == PROGRAM_TEMPORARY)
+ return index + REG_TMP0;
+
+ /* Don't try to cache relatively addressed values yet:
+ */
+ if (!rel) {
+ for (i = 0; i < REG_PAR_NR; i++) {
+ if ((cp->par_active & (1<<i)) &&
+ cp->reg[i].file == file &&
+ cp->reg[i].idx == index) {
+ cp->par_protected |= (1<<i);
+ return i + REG_PAR0;
+ }
+ }
+ }
+
+ /* Not already loaded, so identify a slot and load it.
+ * TODO: preload these values once only!
+ * TODO: better eviction strategy!
+ */
+ if (cp->par_active == ~0) {
+ assert(cp->par_protected != ~0);
+ cp->par_active = cp->par_protected;
+ }
+
+ i = ffs(~cp->par_active);
+ assert(i);
+ i--;
+
+
+ if (file == PROGRAM_INPUT)
+ op = IN1 + cp->VB->AttribPtr[index]->size - 1;
+ else if (rel)
+ op = PRL;
+ else
+ op = PAR;
+
+ cp->csr->dword = 0;
+ cp->csr->inr.opcode = op;
+ cp->csr->inr.reg = i + REG_PAR0;
+ cp->csr->inr.file = file;
+ cp->csr->inr.idx = index;
+ cp->csr++;
+
+ cp->reg[i].file = file;
+ cp->reg[i].idx = index;
+ cp->par_protected |= (1<<i);
+ cp->par_active |= (1<<i);
+ return i + REG_PAR0;
+}
+
+static void cvp_release_regs( struct compilation *cp )
+{
+ cp->par_protected = 0;
+}
+
+
+
+static GLuint cvp_emit_arg( struct compilation *cp,
+ const struct vp_src_register *src,
+ GLuint arg )
+{
+ GLuint reg = cvp_load_reg( cp, src->File, src->Index, src->RelAddr );
+ union instruction rsw, noop;
+
+ /* Emit any necessary swizzling.
+ */
+ rsw.dword = 0;
+ rsw.rsw.neg = src->Negate ? 1 : 0;
+ rsw.rsw.swz = ((GET_SWZ(src->Swizzle, 0) << 0) |
+ (GET_SWZ(src->Swizzle, 1) << 2) |
+ (GET_SWZ(src->Swizzle, 2) << 4) |
+ (GET_SWZ(src->Swizzle, 3) << 6));
+
+ noop.dword = 0;
+ noop.rsw.neg = 0;
+ noop.rsw.swz = ((0<<0) |
+ (1<<2) |
+ (2<<4) |
+ (3<<6));
+
+ if (rsw.dword != noop.dword) {
+ GLuint rsw_reg = arg;
+ cp->csr->dword = rsw.dword;
+ cp->csr->rsw.opcode = RSW;
+ cp->csr->rsw.arg0 = reg;
+ cp->csr->rsw.dst = rsw_reg;
+ cp->csr++;
+ return rsw_reg;
+ }
+ else
+ return reg;
+}
+
+static GLuint cvp_choose_result( struct compilation *cp,
+ const struct vp_dst_register *dst,
+ union instruction *fixup,
+ GLuint maxreg)
+{
+ GLuint mask = dst->WriteMask;
+
+ if (dst->File == PROGRAM_TEMPORARY) {
+
+ /* Optimization: When writing (with a writemask) to an undefined
+ * value for the first time, the writemask may be ignored. In
+ * practise this means that the MSK instruction to implement the
+ * writemask can be dropped.
+ */
+ if (dst->Index < maxreg &&
+ (mask == 0xf || !(cp->tmp_active & (1<<dst->Index)))) {
+ fixup->dword = 0;
+ cp->tmp_active |= (1<<dst->Index);
+ return REG_TMP0 + dst->Index;
+ }
+ else if (mask != 0xf) {
+ fixup->msk.opcode = MSK;
+ fixup->msk.arg0 = REG_RES;
+ fixup->msk.dst = REG_TMP0 + dst->Index;
+ fixup->msk.mask = mask;
+ cp->tmp_active |= (1<<dst->Index);
+ return REG_RES;
+ }
+ else {
+ fixup->vec.opcode = VP_OPCODE_MOV;
+ fixup->vec.arg0 = REG_RES;
+ fixup->vec.dst = REG_TMP0 + dst->Index;
+ cp->tmp_active |= (1<<dst->Index);
+ return REG_RES;
+ }
+ }
+ else {
+ assert(dst->File == PROGRAM_OUTPUT);
+ fixup->out.opcode = (mask == 0xf) ? OUT : OUM;
+ fixup->out.reg = REG_RES;
+ fixup->out.file = dst->File;
+ fixup->out.idx = dst->Index;
+ fixup->out.mask = mask;
+ return REG_RES;
+ }
+}
+
+
+static void cvp_emit_inst( struct compilation *cp,
+ const struct vp_instruction *inst )
+{
+ const struct opcode_info *info = &opcode_info[inst->Opcode];
+ union instruction fixup;
+ GLuint reg[3];
+ GLuint result, i;
+
+ /* Need to handle SWZ, ARL specially.
+ */
+ switch (info->type) {
+ case OUT:
+ assert(inst->Opcode == VP_OPCODE_ARL);
+ reg[0] = cvp_emit_arg( cp, &inst->SrcReg[0], REG_ARG0 );
+
+ cp->csr->dword = 0;
+ cp->csr->out.opcode = inst->Opcode;
+ cp->csr->out.reg = reg[0];
+ cp->csr->out.file = PROGRAM_ADDRESS;
+ cp->csr->out.idx = 0;
+ break;
+ case SWZ:
+ assert(inst->Opcode == VP_OPCODE_SWZ);
+ result = cvp_choose_result( cp, &inst->DstReg, &fixup, REG_SWZDST_MAX );
+
+ reg[0] = cvp_emit_arg( cp, &inst->SrcReg[0], REG_ARG0 );
+
+ cp->csr->dword = 0;
+ cp->csr->swz.opcode = VP_OPCODE_SWZ;
+ cp->csr->swz.arg0 = reg[0];
+ cp->csr->swz.dst = result;
+ cp->csr->swz.neg = inst->SrcReg[0].Negate;
+ cp->csr->swz.swz = inst->SrcReg[0].Swizzle;
+ cp->csr++;
+
+ if (result == REG_RES) {
+ cp->csr->dword = fixup.dword;
+ cp->csr++;
+ }
+ break;
+
+ case VEC:
+ case SCL: /* for now */
+ result = cvp_choose_result( cp, &inst->DstReg, &fixup, REG_MAX );
+
+ reg[0] = reg[1] = reg[2] = 0;
+
+ for (i = 0; i < info->nr_args; i++)
+ reg[i] = cvp_emit_arg( cp, &inst->SrcReg[i], REG_ARG0 + i );
+
+ cp->csr->dword = 0;
+ cp->csr->vec.opcode = inst->Opcode;
+ cp->csr->vec.arg0 = reg[0];
+ cp->csr->vec.arg1 = reg[1];
+ cp->csr->vec.arg2 = reg[2];
+ cp->csr->vec.dst = result;
+ cp->csr++;
+
+ if (result == REG_RES) {
+ cp->csr->dword = fixup.dword;
+ cp->csr++;
+ }
+ break;
+
+
+ case NOP:
+ break;
+
+ default:
+ assert(0);
+ break;
+ }
+
+ cvp_release_regs( cp );
+}
+
+
+static void compile_vertex_program( struct arb_vp_machine *m,
+ const struct vertex_program *program )
+{
+ struct compilation cp;
+ GLuint i;
+
+ /* Initialize cp:
+ */
+ memset(&cp, 0, sizeof(cp));
+ cp.VB = m->VB;
+ cp.csr = m->store;
+
+ /* Compile instructions:
+ */
+ for (i = 0; i < program->Base.NumInstructions; i++) {
+ cvp_emit_inst(&cp, &program->Instructions[i]);
+ }
+
+ /* Finish up:
+ */
+ m->instructions = m->store;
+ m->nr_instructions = cp.csr - m->store;
+
+
+ /* Print/disassemble:
+ */
+ if (0) {
+ for (i = 0; i < m->nr_instructions; i++) {
+ union instruction insn = m->instructions[i];
+ const struct opcode_info *info = &opcode_info[insn.vec.opcode];
+ info->print( insn, info );
+ }
+ _mesa_printf("\n\n");
+ }
+}
+
+
+
+
+/* ----------------------------------------------------------------------
+ * Execution
+ */
+static void userclip( GLcontext *ctx,
+ GLvector4f *clip,
+ GLubyte *clipmask,
+ GLubyte *clipormask,
+ GLubyte *clipandmask )
+{
+ GLuint p;
+
+ for (p = 0; p < ctx->Const.MaxClipPlanes; p++)
+ if (ctx->Transform.ClipPlanesEnabled & (1 << p)) {
+ GLuint nr, i;
+ const GLfloat a = ctx->Transform._ClipUserPlane[p][0];
+ const GLfloat b = ctx->Transform._ClipUserPlane[p][1];
+ const GLfloat c = ctx->Transform._ClipUserPlane[p][2];
+ const GLfloat d = ctx->Transform._ClipUserPlane[p][3];
+ GLfloat *coord = (GLfloat *)clip->data;
+ GLuint stride = clip->stride;
+ GLuint count = clip->count;
+
+ for (nr = 0, i = 0 ; i < count ; i++) {
+ GLfloat dp = (coord[0] * a +
+ coord[1] * b +
+ coord[2] * c +
+ coord[3] * d);
+
+ if (dp < 0) {
+ nr++;
+ clipmask[i] |= CLIP_USER_BIT;
+ }
+
+ STRIDE_F(coord, stride);
+ }
+
+ if (nr > 0) {
+ *clipormask |= CLIP_USER_BIT;
+ if (nr == count) {
+ *clipandmask |= CLIP_USER_BIT;
+ return;
+ }
+ }
+ }
+}
+
+
+static GLboolean do_ndc_cliptest( struct arb_vp_machine *m )
+{
+ GLcontext *ctx = m->ctx;
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ struct vertex_buffer *VB = m->VB;
+
+ /* Cliptest and perspective divide. Clip functions must clear
+ * the clipmask.
+ */
+ m->ormask = 0;
+ m->andmask = CLIP_ALL_BITS;
+
+ if (tnl->NeedNdcCoords) {
+ VB->NdcPtr =
+ _mesa_clip_tab[VB->ClipPtr->size]( VB->ClipPtr,
+ &m->ndcCoords,
+ m->clipmask,
+ &m->ormask,
+ &m->andmask );
+ }
+ else {
+ VB->NdcPtr = NULL;
+ _mesa_clip_np_tab[VB->ClipPtr->size]( VB->ClipPtr,
+ NULL,
+ m->clipmask,
+ &m->ormask,
+ &m->andmask );
+ }
+
+ if (m->andmask) {
+ /* All vertices are outside the frustum */
+ return GL_FALSE;
+ }
+
+ /* Test userclip planes. This contributes to VB->ClipMask.
+ */
+ if (ctx->Transform.ClipPlanesEnabled && !ctx->VertexProgram._Enabled) {
+ userclip( ctx,
+ VB->ClipPtr,
+ m->clipmask,
+ &m->ormask,
+ &m->andmask );
+
+ if (m->andmask) {
+ return GL_FALSE;
+ }
+ }
+
+ VB->ClipAndMask = m->andmask;
+ VB->ClipOrMask = m->ormask;
+ VB->ClipMask = m->clipmask;
+
+ return GL_TRUE;
+}
+
+
+
+
+/**
+ * Execute the given vertex program.
+ *
+ * TODO: Integrate the t_vertex.c code here, to build machine vertices
+ * directly at this point.
+ *
+ * TODO: Eliminate the VB struct entirely and just use
+ * struct arb_vertex_machine.
+ */
+static GLboolean
+run_arb_vertex_program(GLcontext *ctx, struct tnl_pipeline_stage *stage)
+{
+ struct vertex_program *program = (ctx->VertexProgram._Enabled ?
+ ctx->VertexProgram.Current :
+ &ctx->_TnlProgram);
+ struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
+ struct arb_vp_machine *m = ARB_VP_MACHINE(stage);
+ GLuint i, j, outputs = program->OutputsWritten;
+
+ if (program->Parameters) {
+ _mesa_load_state_parameters(ctx, program->Parameters);
+ m->File[PROGRAM_STATE_VAR] = program->Parameters->ParameterValues;
+ }
+
+ /* Run the actual program:
+ */
+ for (m->vtx_nr = 0; m->vtx_nr < VB->Count; m->vtx_nr++) {
+ for (j = 0; j < m->nr_instructions; j++) {
+ union instruction inst = m->instructions[j];
+ opcode_info[inst.vec.opcode].func( m, inst );
+ }
+ }
+
+ /* Setup the VB pointers so that the next pipeline stages get
+ * their data from the right place (the program output arrays).
+ *
+ * TODO: 1) Have tnl use these RESULT values for outputs rather
+ * than trying to shoe-horn inputs and outputs into one set of
+ * values.
+ *
+ * TODO: 2) Integrate t_vertex.c so that we just go straight ahead
+ * and build machine vertices here.
+ */
+ VB->ClipPtr = &m->attribs[VERT_RESULT_HPOS];
+ VB->ClipPtr->count = VB->Count;
+
+ if (outputs & (1<<VERT_RESULT_COL0)) {
+ VB->ColorPtr[0] = &m->attribs[VERT_RESULT_COL0];
+ VB->AttribPtr[VERT_ATTRIB_COLOR0] = VB->ColorPtr[0];
+ }
+
+ if (outputs & (1<<VERT_RESULT_BFC0)) {
+ VB->ColorPtr[1] = &m->attribs[VERT_RESULT_BFC0];
+ }
+
+ if (outputs & (1<<VERT_RESULT_COL1)) {
+ VB->SecondaryColorPtr[0] = &m->attribs[VERT_RESULT_COL1];
+ VB->AttribPtr[VERT_ATTRIB_COLOR1] = VB->SecondaryColorPtr[0];
+ }
+
+ if (outputs & (1<<VERT_RESULT_BFC1)) {
+ VB->SecondaryColorPtr[1] = &m->attribs[VERT_RESULT_BFC1];
+ }
+
+ if (outputs & (1<<VERT_RESULT_FOGC)) {
+ VB->FogCoordPtr = &m->attribs[VERT_RESULT_FOGC];
+ VB->AttribPtr[VERT_ATTRIB_FOG] = VB->FogCoordPtr;
+ }
+
+ if (outputs & (1<<VERT_RESULT_PSIZ)) {
+ VB->PointSizePtr = &m->attribs[VERT_RESULT_PSIZ];
+ VB->AttribPtr[_TNL_ATTRIB_POINTSIZE] = &m->attribs[VERT_RESULT_PSIZ];
+ }
+
+ for (i = 0; i < ctx->Const.MaxTextureUnits; i++) {
+ if (outputs & (1<<(VERT_RESULT_TEX0+i))) {
+ VB->TexCoordPtr[i] = &m->attribs[VERT_RESULT_TEX0 + i];
+ VB->AttribPtr[VERT_ATTRIB_TEX0+i] = VB->TexCoordPtr[i];
+ }
+ }
+
+#if 0
+ for (i = 0; i < VB->Count; i++) {
+ printf("Out %d: %f %f %f %f %f %f %f %f\n", i,
+ VEC_ELT(VB->ClipPtr, GLfloat, i)[0],
+ VEC_ELT(VB->ClipPtr, GLfloat, i)[1],
+ VEC_ELT(VB->ClipPtr, GLfloat, i)[2],
+ VEC_ELT(VB->ClipPtr, GLfloat, i)[3],
+ VEC_ELT(VB->ColorPtr[0], GLfloat, i)[0],
+ VEC_ELT(VB->ColorPtr[0], GLfloat, i)[1],
+ VEC_ELT(VB->ColorPtr[0], GLfloat, i)[2],
+ VEC_ELT(VB->ColorPtr[0], GLfloat, i)[3]);
+ }
+#endif
+
+ /* Perform NDC and cliptest operations:
+ */
+ return do_ndc_cliptest(m);
+}
+
+
+static void
+validate_vertex_program( GLcontext *ctx, struct tnl_pipeline_stage *stage )
+{
+ struct arb_vp_machine *m = ARB_VP_MACHINE(stage);
+ struct vertex_program *program = (ctx->VertexProgram._Enabled ?
+ ctx->VertexProgram.Current :
+ &ctx->_TnlProgram);
+
+ compile_vertex_program( m, program );
+
+ /* Grab the state GL state and put into registers:
+ */
+ m->File[PROGRAM_LOCAL_PARAM] = program->Base.LocalParams;
+ m->File[PROGRAM_ENV_PARAM] = ctx->VertexProgram.Parameters;
+ m->File[PROGRAM_STATE_VAR] = 0;
+}
+
+
+
+
+
+
+
+/**
+ * Called the first time stage->run is called. In effect, don't
+ * allocate data until the first time the stage is run.
+ */
+static void init_vertex_program( GLcontext *ctx,
+ struct tnl_pipeline_stage *stage )
+{
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+ struct vertex_buffer *VB = &(tnl->vb);
+ struct arb_vp_machine *m;
+ const GLuint size = VB->Size;
+ GLuint i;
+
+ stage->privatePtr = MALLOC(sizeof(*m));
+ m = ARB_VP_MACHINE(stage);
+ if (!m)
+ return;
+
+ /* arb_vertex_machine struct should subsume the VB:
+ */
+ m->VB = VB;
+ m->ctx = ctx;
+
+ /* Allocate arrays of vertex output values */
+ for (i = 0; i < VERT_RESULT_MAX; i++) {
+ _mesa_vector4f_alloc( &m->attribs[i], 0, size, 32 );
+ m->attribs[i].size = 4;
+ }
+
+ /* a few other misc allocations */
+ _mesa_vector4f_alloc( &m->ndcCoords, 0, size, 32 );
+ m->clipmask = (GLubyte *) ALIGN_MALLOC(sizeof(GLubyte)*size, 32 );
+}
+
+
+
+
+/**
+ * Destructor for this pipeline stage.
+ */
+static void dtr( struct tnl_pipeline_stage *stage )
+{
+ struct arb_vp_machine *m = ARB_VP_MACHINE(stage);
+
+ if (m) {
+ GLuint i;
+
+ /* free the vertex program result arrays */
+ for (i = 0; i < VERT_RESULT_MAX; i++)
+ _mesa_vector4f_free( &m->attribs[i] );
+
+ /* free misc arrays */
+ _mesa_vector4f_free( &m->ndcCoords );
+ ALIGN_FREE( m->clipmask );
+
+ FREE( m );
+ stage->privatePtr = NULL;
+ }
+}
+
+/**
+ * Public description of this pipeline stage.
+ */
+const struct tnl_pipeline_stage _tnl_arb_vertex_program_stage =
+{
+ "vertex-program",
+ NULL, /* private_data */
+ init_vertex_program, /* create */
+ dtr, /* destroy */
+ validate_vertex_program, /* validate */
+ run_arb_vertex_program /* run */
+};
projects / mesa.git / commitdiff