/*
* Mesa 3-D graphics library
- * Version: 6.3
*
- * Copyright (C) 2005 Tungsten Graphics All Rights Reserved.
+ * Copyright (C) 2007 VMware, Inc. 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"),
* 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
- * TUNGSTEN GRAPHICS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * VMWARE 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.
*/
-#include <strings.h>
-
-#include "glheader.h"
-#include "macros.h"
-#include "enums.h"
-#include "t_context.h"
+#include "main/glheader.h"
+#include "main/ffvertex_prog.h"
+#include "main/mtypes.h"
#include "t_vp_build.h"
-#include "shader/program.h"
-#include "shader/nvvertprog.h"
-#include "shader/arbvertparse.h"
-
-
-/* Very useful debugging tool - produces annotated listing of
- * generated program with line/function references for each
- * instruction back into this file:
- */
-#define DISASSEM 0
-
-/* Use uregs to represent registers internally, translate to Mesa's
- * expected formats on emit.
- *
- * NOTE: These are passed by value extensively in this file rather
- * than as usual by pointer reference. If this disturbs you, try
- * remembering they are just 32bits in size.
- *
- * GCC is smart enough to deal with these dword-sized structures in
- * much the same way as if I had defined them as dwords and was using
- * macros to access and set the fields. This is much nicer and easier
- * to evolve.
- */
-struct ureg {
- GLuint file:4;
- GLuint idx:8;
- GLuint negate:1;
- GLuint swz:12;
- GLuint pad:7;
-};
-
-
-struct tnl_program {
- GLcontext *ctx;
- struct vertex_program *program;
-
- GLuint temp_flag;
- GLuint temp_reserved;
-
- struct ureg eye_position;
- struct ureg eye_position_normalized;
- struct ureg eye_normal;
- struct ureg identity;
-
- GLuint materials;
- GLuint color_materials;
-};
-
-
-const static struct ureg undef = {
- ~0,
- ~0,
- 0,
- 0,
- 0
-};
-
-/* Local shorthand:
- */
-#define X SWIZZLE_X
-#define Y SWIZZLE_Y
-#define Z SWIZZLE_Z
-#define W SWIZZLE_W
-
-
-/* Construct a ureg:
- */
-static struct ureg make_ureg(GLuint file, GLuint idx)
-{
- struct ureg reg;
- reg.file = file;
- reg.idx = idx;
- reg.negate = 0;
- reg.swz = SWIZZLE_NOOP;
- reg.pad = 0;
- return reg;
-}
-
-
-
-static struct ureg negate( struct ureg reg )
-{
- reg.negate ^= 1;
- return reg;
-}
-
-
-static struct ureg swizzle( struct ureg reg, int x, int y, int z, int w )
-{
- reg.swz = MAKE_SWIZZLE4(GET_SWZ(reg.swz, x),
- GET_SWZ(reg.swz, y),
- GET_SWZ(reg.swz, z),
- GET_SWZ(reg.swz, w));
-
- return reg;
-}
-
-static struct ureg swizzle1( struct ureg reg, int x )
-{
- return swizzle(reg, x, x, x, x);
-}
-
-static struct ureg get_temp( struct tnl_program *p )
-{
- int bit = ffs( ~p->temp_flag );
- if (!bit) {
- fprintf(stderr, "%s: out of temporaries\n", __FILE__);
- exit(1);
- }
-
- p->temp_flag |= 1<<(bit-1);
- return make_ureg(PROGRAM_TEMPORARY, bit-1);
-}
-
-static struct ureg reserve_temp( struct tnl_program *p )
-{
- struct ureg temp = get_temp( p );
- p->temp_reserved |= 1<<temp.idx;
- return temp;
-}
-
-static void release_temp( struct tnl_program *p, struct ureg reg )
-{
- if (reg.file == PROGRAM_TEMPORARY) {
- p->temp_flag &= ~(1<<reg.idx);
- p->temp_flag |= p->temp_reserved; /* can't release reserved temps */
- }
-}
-
-static void release_temps( struct tnl_program *p )
-{
- p->temp_flag = p->temp_reserved;
-}
-
-
-
-static struct ureg register_input( struct tnl_program *p, GLuint input )
-{
- p->program->InputsRead |= (1<<input);
- return make_ureg(PROGRAM_INPUT, input);
-}
-
-static struct ureg register_output( struct tnl_program *p, GLuint output )
-{
- p->program->OutputsWritten |= (1<<output);
- return make_ureg(PROGRAM_OUTPUT, output);
-}
-
-static struct ureg register_const4f( struct tnl_program *p,
- GLfloat s0,
- GLfloat s1,
- GLfloat s2,
- GLfloat s3)
-{
- GLfloat values[4];
- GLuint idx;
- values[0] = s0;
- values[1] = s1;
- values[2] = s2;
- values[3] = s3;
- idx = _mesa_add_unnamed_constant( p->program->Parameters, values );
- return make_ureg(PROGRAM_STATE_VAR, idx);
-}
-
-#define register_const1f(p, s0) register_const4f(p, s0, 0, 0, 1)
-#define register_const2f(p, s0, s1) register_const4f(p, s0, s1, 0, 1)
-#define register_const3f(p, s0, s1, s2) register_const4f(p, s0, s1, s2, 1)
-
-static GLboolean is_undef( struct ureg reg )
-{
- return reg.file == 0xf;
-}
-
-static struct ureg get_identity_param( struct tnl_program *p )
-{
- if (is_undef(p->identity))
- p->identity = register_const4f(p, 0,0,0,1);
-
- return p->identity;
-}
-
-static struct ureg register_param6( struct tnl_program *p,
- GLint s0,
- GLint s1,
- GLint s2,
- GLint s3,
- GLint s4,
- GLint s5)
-{
- GLint tokens[6];
- GLuint idx;
- tokens[0] = s0;
- tokens[1] = s1;
- tokens[2] = s2;
- tokens[3] = s3;
- tokens[4] = s4;
- tokens[5] = s5;
- idx = _mesa_add_state_reference( p->program->Parameters, tokens );
- return make_ureg(PROGRAM_STATE_VAR, idx);
-}
-
-
-#define register_param1(p,s0) register_param6(p,s0,0,0,0,0,0)
-#define register_param2(p,s0,s1) register_param6(p,s0,s1,0,0,0,0)
-#define register_param3(p,s0,s1,s2) register_param6(p,s0,s1,s2,0,0,0)
-#define register_param4(p,s0,s1,s2,s3) register_param6(p,s0,s1,s2,s3,0,0)
-
-
-static void register_matrix_param6( struct tnl_program *p,
- GLint s0,
- GLint s1,
- GLint s2,
- GLint s3,
- GLint s4,
- GLint s5,
- struct ureg *matrix )
-{
- GLuint i;
-
- /* This is a bit sad as the support is there to pull the whole
- * matrix out in one go:
- */
- for (i = 0; i <= s4 - s3; i++)
- matrix[i] = register_param6( p, s0, s1, s2, i, i, s5 );
-}
-
-
-static void emit_arg( struct vp_src_register *src,
- struct ureg reg )
-{
- src->File = reg.file;
- src->Index = reg.idx;
- src->Swizzle = reg.swz;
- src->Negate = reg.negate;
- src->RelAddr = 0;
- src->pad = 0;
-}
-
-static void emit_dst( struct vp_dst_register *dst,
- struct ureg reg, GLuint mask )
-{
- dst->File = reg.file;
- dst->Index = reg.idx;
- /* allow zero as a shorthand for xyzw */
- dst->WriteMask = mask ? mask : WRITEMASK_XYZW;
- dst->pad = 0;
-}
-
-static void debug_insn( struct vp_instruction *inst, const char *fn,
- GLuint line )
-{
-#if DISASSEM
- static const char *last_fn;
-
- if (fn != last_fn) {
- last_fn = fn;
- _mesa_printf("%s:\n", fn);
- }
-
- _mesa_printf("%d:\t", line);
- _mesa_debug_vp_inst(1, inst);
-#endif
-}
-
-
-static void emit_op3fn(struct tnl_program *p,
- GLuint op,
- struct ureg dest,
- GLuint mask,
- struct ureg src0,
- struct ureg src1,
- struct ureg src2,
- const char *fn,
- GLuint line)
-{
- GLuint nr = p->program->Base.NumInstructions++;
- struct vp_instruction *inst = &p->program->Instructions[nr];
-
- inst->Opcode = op;
- inst->StringPos = 0;
- inst->Data = 0;
-
- emit_arg( &inst->SrcReg[0], src0 );
- emit_arg( &inst->SrcReg[1], src1 );
- emit_arg( &inst->SrcReg[2], src2 );
-
- emit_dst( &inst->DstReg, dest, mask );
-
- debug_insn(inst, fn, line);
-}
-
-
-
-#define emit_op3(p, op, dst, mask, src0, src1, src2) \
- emit_op3fn(p, op, dst, mask, src0, src1, src2, __FUNCTION__, __LINE__)
-
-#define emit_op2(p, op, dst, mask, src0, src1) \
- emit_op3fn(p, op, dst, mask, src0, src1, undef, __FUNCTION__, __LINE__)
-
-#define emit_op1(p, op, dst, mask, src0) \
- emit_op3fn(p, op, dst, mask, src0, undef, undef, __FUNCTION__, __LINE__)
-
-
-static struct ureg make_temp( struct tnl_program *p, struct ureg reg )
-{
- if (reg.file == PROGRAM_TEMPORARY &&
- !(p->temp_reserved & (1<<reg.idx)))
- return reg;
- else {
- struct ureg temp = get_temp(p);
- emit_op1(p, VP_OPCODE_MOV, temp, 0, reg);
- return temp;
- }
-}
-
-
-/* Currently no tracking performed of input/output/register size or
- * active elements. Could be used to reduce these operations, as
- * could the matrix type.
- */
-static void emit_matrix_transform_vec4( struct tnl_program *p,
- struct ureg dest,
- const struct ureg *mat,
- struct ureg src)
-{
- emit_op2(p, VP_OPCODE_DP4, dest, WRITEMASK_X, src, mat[0]);
- emit_op2(p, VP_OPCODE_DP4, dest, WRITEMASK_Y, src, mat[1]);
- emit_op2(p, VP_OPCODE_DP4, dest, WRITEMASK_Z, src, mat[2]);
- emit_op2(p, VP_OPCODE_DP4, dest, WRITEMASK_W, src, mat[3]);
-}
-
-/* This version is much easier to implement if writemasks are not
- * supported natively on the target or (like SSE), the target doesn't
- * have a clean/obvious dotproduct implementation.
- */
-static void emit_transpose_matrix_transform_vec4( struct tnl_program *p,
- struct ureg dest,
- const struct ureg *mat,
- struct ureg src)
-{
- struct ureg tmp;
-
- if (dest.file != PROGRAM_TEMPORARY)
- tmp = get_temp(p);
- else
- tmp = dest;
-
- emit_op2(p, VP_OPCODE_MUL, tmp, 0, swizzle1(src,X), mat[0]);
- emit_op3(p, VP_OPCODE_MAD, tmp, 0, swizzle1(src,Y), mat[1], tmp);
- emit_op3(p, VP_OPCODE_MAD, tmp, 0, swizzle1(src,Z), mat[2], tmp);
- emit_op3(p, VP_OPCODE_MAD, dest, 0, swizzle1(src,W), mat[3], tmp);
-
- if (dest.file != PROGRAM_TEMPORARY)
- release_temp(p, tmp);
-}
-
-static void emit_matrix_transform_vec3( struct tnl_program *p,
- struct ureg dest,
- const struct ureg *mat,
- struct ureg src)
-{
- emit_op2(p, VP_OPCODE_DP3, dest, WRITEMASK_X, src, mat[0]);
- emit_op2(p, VP_OPCODE_DP3, dest, WRITEMASK_Y, src, mat[1]);
- emit_op2(p, VP_OPCODE_DP3, dest, WRITEMASK_Z, src, mat[2]);
-}
-
-
-static void emit_normalize_vec3( struct tnl_program *p,
- struct ureg dest,
- struct ureg src )
-{
- struct ureg tmp = get_temp(p);
- emit_op2(p, VP_OPCODE_DP3, tmp, 0, src, src);
- emit_op1(p, VP_OPCODE_RSQ, tmp, 0, tmp);
- emit_op2(p, VP_OPCODE_MUL, dest, 0, src, tmp);
- release_temp(p, tmp);
-}
-
-static struct ureg get_eye_position( struct tnl_program *p )
-{
- if (is_undef(p->eye_position)) {
- struct ureg pos = register_input( p, VERT_ATTRIB_POS );
- struct ureg modelview[4];
-
- register_matrix_param6( p, STATE_MATRIX, STATE_MODELVIEW, 0, 0, 3,
- STATE_MATRIX_TRANSPOSE, modelview );
- p->eye_position = reserve_temp(p);
-
- emit_transpose_matrix_transform_vec4(p, p->eye_position, modelview, pos);
- }
-
- return p->eye_position;
-}
-
-
-static struct ureg get_eye_position_normalized( struct tnl_program *p )
-{
- if (is_undef(p->eye_position_normalized)) {
- struct ureg eye = get_eye_position(p);
- p->eye_position_normalized = reserve_temp(p);
- emit_normalize_vec3(p, p->eye_position_normalized, eye);
- }
-
- return p->eye_position_normalized;
-}
-
-
-static struct ureg get_eye_normal( struct tnl_program *p )
-{
- if (is_undef(p->eye_normal)) {
- struct ureg normal = register_input(p, VERT_ATTRIB_NORMAL );
- struct ureg mvinv[3];
-
- register_matrix_param6( p, STATE_MATRIX, STATE_MODELVIEW, 0, 0, 2,
- STATE_MATRIX_INVTRANS, mvinv );
-
- p->eye_normal = reserve_temp(p);
-
- /* Transform to eye space:
- */
- emit_matrix_transform_vec3( p, p->eye_normal, mvinv, normal );
-
- /* Normalize/Rescale:
- */
- if (p->ctx->Transform.Normalize) {
- emit_normalize_vec3( p, p->eye_normal, p->eye_normal );
- }
- else if (p->ctx->Transform.RescaleNormals) {
- struct ureg rescale = register_param2(p, STATE_INTERNAL,
- STATE_NORMAL_SCALE);
-
- emit_op2( p, VP_OPCODE_MUL, p->eye_normal, 0, normal,
- swizzle1(rescale, X));
- }
- }
-
- return p->eye_normal;
-}
-
-
-
-static void build_hpos( struct tnl_program *p )
-{
- struct ureg pos = register_input( p, VERT_ATTRIB_POS );
- struct ureg hpos = register_output( p, VERT_RESULT_HPOS );
- struct ureg mvp[4];
-
- register_matrix_param6( p, STATE_MATRIX, STATE_MVP, 0, 0, 3,
- STATE_MATRIX_TRANSPOSE, mvp );
- emit_transpose_matrix_transform_vec4( p, hpos, mvp, pos );
-}
-
-
-static GLuint material_attrib( GLuint side, GLuint property )
-{
- return (_TNL_ATTRIB_MAT_FRONT_AMBIENT +
- (property - STATE_AMBIENT) * 2 +
- side);
-}
-
-static void set_material_flags( struct tnl_program *p )
-{
- GLcontext *ctx = p->ctx;
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- GLuint i;
-
- p->color_materials = 0;
- p->materials = 0;
-
- if (ctx->Light.ColorMaterialEnabled) {
- p->materials =
- p->color_materials =
- ctx->Light.ColorMaterialBitmask << _TNL_ATTRIB_MAT_FRONT_AMBIENT;
- }
-
- for (i = _TNL_ATTRIB_MAT_FRONT_AMBIENT ; i < _TNL_ATTRIB_INDEX ; i++)
- if (tnl->vb.AttribPtr[i]->stride)
- p->materials |= 1<<i;
-}
-
-
-static struct ureg get_material( struct tnl_program *p, GLuint side,
- GLuint property )
-{
- GLuint attrib = material_attrib(side, property);
-
- if (p->color_materials & (1<<attrib))
- return register_input(p, VERT_ATTRIB_COLOR0);
- else if (p->materials & (1<<attrib))
- return register_input( p, attrib );
- else
- return register_param3( p, STATE_MATERIAL, side, property );
-}
-
-#define SCENE_COLOR_BITS(side) (( _TNL_BIT_MAT_FRONT_EMISSION | \
- _TNL_BIT_MAT_FRONT_AMBIENT | \
- _TNL_BIT_MAT_FRONT_DIFFUSE) << (side))
-
-/* Either return a precalculated constant value or emit code to
- * calculate these values dynamically in the case where material calls
- * are present between begin/end pairs.
- *
- * Probably want to shift this to the program compilation phase - if
- * we always emitted the calculation here, a smart compiler could
- * detect that it was constant (given a certain set of inputs), and
- * lift it out of the main loop. That way the programs created here
- * would be independent of the vertex_buffer details.
- */
-static struct ureg get_scenecolor( struct tnl_program *p, GLuint side )
-{
- if (p->materials & SCENE_COLOR_BITS(side)) {
- struct ureg lm_ambient = register_param1(p, STATE_LIGHTMODEL_AMBIENT);
- struct ureg material_emission = get_material(p, side, STATE_EMISSION);
- struct ureg material_ambient = get_material(p, side, STATE_AMBIENT);
- struct ureg material_diffuse = get_material(p, side, STATE_DIFFUSE);
- struct ureg tmp = make_temp(p, material_diffuse);
- emit_op3(p, VP_OPCODE_MAD, tmp, WRITEMASK_XYZ, lm_ambient,
- material_ambient, material_emission);
- return tmp;
- }
- else
- return register_param2( p, STATE_LIGHTMODEL_SCENECOLOR, side );
-}
-
-
-static struct ureg get_lightprod( struct tnl_program *p, GLuint light,
- GLuint side, GLuint property )
-{
- GLuint attrib = material_attrib(side, property);
- if (p->materials & (1<<attrib)) {
- struct ureg light_value =
- register_param3(p, STATE_LIGHT, light, property);
- struct ureg material_value = get_material(p, side, property);
- struct ureg tmp = get_temp(p);
- emit_op2(p, VP_OPCODE_MUL, tmp, 0, light_value, material_value);
- return tmp;
- }
- else
- return register_param4(p, STATE_LIGHTPROD, light, side, property);
-}
-
-static struct ureg calculate_light_attenuation( struct tnl_program *p,
- GLuint i,
- struct gl_light *light,
- struct ureg VPpli,
- struct ureg dist )
-{
- struct ureg attenuation = register_param3(p, STATE_LIGHT, i,
- STATE_ATTENUATION);
- struct ureg att = get_temp(p);
-
- /* Calculate spot attenuation:
- */
- if (light->SpotCutoff != 180.0F) {
- struct ureg spot_dir = register_param3(p, STATE_LIGHT, i,
- STATE_SPOT_DIRECTION);
- struct ureg spot = get_temp(p);
- struct ureg slt = get_temp(p);
-
- emit_normalize_vec3( p, spot, spot_dir ); /* XXX: precompute! */
- emit_op2(p, VP_OPCODE_DP3, spot, 0, negate(VPpli), spot_dir);
- emit_op2(p, VP_OPCODE_SLT, slt, 0, swizzle1(spot_dir,W), spot);
- emit_op2(p, VP_OPCODE_POW, spot, 0, spot, swizzle1(attenuation, W));
- emit_op2(p, VP_OPCODE_MUL, att, 0, slt, spot);
-
- release_temp(p, spot);
- release_temp(p, slt);
- }
-
- /* Calculate distance attenuation:
- */
- if (light->ConstantAttenuation != 1.0 ||
- light->LinearAttenuation != 1.0 ||
- light->QuadraticAttenuation != 1.0) {
-
- /* 1/d,d,d,1/d */
- emit_op1(p, VP_OPCODE_RCP, dist, WRITEMASK_YZ, dist);
- /* 1,d,d*d,1/d */
- emit_op2(p, VP_OPCODE_MUL, dist, WRITEMASK_XZ, dist, swizzle1(dist,Y));
- /* 1/dist-atten */
- emit_op2(p, VP_OPCODE_DP3, dist, 0, attenuation, dist);
-
- if (light->SpotCutoff != 180.0F) {
- /* dist-atten */
- emit_op1(p, VP_OPCODE_RCP, dist, 0, dist);
- /* spot-atten * dist-atten */
- emit_op2(p, VP_OPCODE_MUL, att, 0, dist, att);
- } else {
- /* dist-atten */
- emit_op1(p, VP_OPCODE_RCP, att, 0, dist);
- }
- }
-
- return att;
-}
-
-
-
-
-
-/* Need to add some addtional parameters to allow lighting in object
- * space - STATE_SPOT_DIRECTION and STATE_HALF implicitly assume eye
- * space lighting.
- */
-static void build_lighting( struct tnl_program *p )
-{
- GLcontext *ctx = p->ctx;
- const GLboolean twoside = ctx->Light.Model.TwoSide;
- const GLboolean separate = (ctx->Light.Model.ColorControl ==
- GL_SEPARATE_SPECULAR_COLOR);
- GLuint nr_lights = 0, count = 0;
- struct ureg normal = get_eye_normal(p);
- struct ureg lit = get_temp(p);
- struct ureg dots = get_temp(p);
- struct ureg _col0 = undef, _col1 = undef;
- struct ureg _bfc0 = undef, _bfc1 = undef;
- GLuint i;
-
- for (i = 0; i < MAX_LIGHTS; i++)
- if (ctx->Light.Light[i].Enabled)
- nr_lights++;
-
- set_material_flags(p);
-
- {
- struct ureg shininess = get_material(p, 0, STATE_SHININESS);
- emit_op1(p, VP_OPCODE_MOV, dots, WRITEMASK_W, swizzle1(shininess,X));
- release_temp(p, shininess);
-
- _col0 = make_temp(p, get_scenecolor(p, 0));
- if (separate)
- _col1 = make_temp(p, get_identity_param(p));
- else
- _col1 = _col0;
-
- }
-
- if (twoside) {
- struct ureg shininess = get_material(p, 1, STATE_SHININESS);
- emit_op1(p, VP_OPCODE_MOV, dots, WRITEMASK_Z,
- negate(swizzle1(shininess,X)));
- release_temp(p, shininess);
-
- _bfc0 = make_temp(p, get_scenecolor(p, 1));
- if (separate)
- _bfc1 = make_temp(p, get_identity_param(p));
- else
- _bfc1 = _bfc0;
- }
-
- for (i = 0; i < MAX_LIGHTS; i++) {
- struct gl_light *light = &ctx->Light.Light[i];
-
- if (light->Enabled) {
- struct ureg half = undef;
- struct ureg att = undef, VPpli = undef;
-
- count++;
-
- if (light->EyePosition[3] == 0) {
- /* Can used precomputed constants in this case.
- * Attenuation never applies to infinite lights.
- */
- VPpli = register_param3(p, STATE_LIGHT, i,
- STATE_POSITION_NORMALIZED);
- half = register_param3(p, STATE_LIGHT, i, STATE_HALF);
- }
- else {
- struct ureg Ppli = register_param3(p, STATE_LIGHT, i,
- STATE_POSITION);
- struct ureg V = get_eye_position(p);
- struct ureg dist = get_temp(p);
-
- VPpli = get_temp(p);
- half = get_temp(p);
-
- /* Calulate VPpli vector
- */
- emit_op2(p, VP_OPCODE_SUB, VPpli, 0, Ppli, V);
-
- /* Normalize VPpli. The dist value also used in
- * attenuation below.
- */
- emit_op2(p, VP_OPCODE_DP3, dist, 0, VPpli, VPpli);
- emit_op1(p, VP_OPCODE_RSQ, dist, 0, dist);
- emit_op2(p, VP_OPCODE_MUL, VPpli, 0, VPpli, dist);
-
-
- /* Calculate attenuation:
- */
- if (light->SpotCutoff != 180.0 ||
- light->ConstantAttenuation != 1.0 ||
- light->LinearAttenuation != 1.0 ||
- light->QuadraticAttenuation != 1.0) {
- att = calculate_light_attenuation(p, i, light, VPpli, dist);
- }
-
-
- /* Calculate viewer direction, or use infinite viewer:
- */
- if (ctx->Light.Model.LocalViewer) {
- struct ureg eye_hat = get_eye_position_normalized(p);
- emit_op2(p, VP_OPCODE_SUB, half, 0, VPpli, eye_hat);
- }
- else {
- struct ureg z_dir = swizzle(get_identity_param(p),X,Y,W,Z);
- emit_op2(p, VP_OPCODE_ADD, half, 0, VPpli, z_dir);
- }
-
- emit_normalize_vec3(p, half, half);
-
- release_temp(p, dist);
- }
-
- /* Calculate dot products:
- */
- emit_op2(p, VP_OPCODE_DP3, dots, WRITEMASK_X, normal, VPpli);
- emit_op2(p, VP_OPCODE_DP3, dots, WRITEMASK_Y, normal, half);
-
-
- /* Front face lighting:
- */
- {
- struct ureg ambient = get_lightprod(p, i, 0, STATE_AMBIENT);
- struct ureg diffuse = get_lightprod(p, i, 0, STATE_DIFFUSE);
- struct ureg specular = get_lightprod(p, i, 0, STATE_SPECULAR);
- struct ureg res0, res1;
-
- emit_op1(p, VP_OPCODE_LIT, lit, 0, dots);
-
- if (!is_undef(att))
- emit_op2(p, VP_OPCODE_MUL, lit, 0, lit, att);
-
-
- if (count == nr_lights) {
- if (separate) {
- res0 = register_output( p, VERT_RESULT_COL0 );
- res1 = register_output( p, VERT_RESULT_COL1 );
- }
- else {
- res0 = _col0;
- res1 = register_output( p, VERT_RESULT_COL0 );
- }
- } else {
- res0 = _col0;
- res1 = _col1;
- }
-
- emit_op3(p, VP_OPCODE_MAD, _col0, 0, swizzle1(lit,X), ambient, _col0);
- emit_op3(p, VP_OPCODE_MAD, res0, 0, swizzle1(lit,Y), diffuse, _col0);
- emit_op3(p, VP_OPCODE_MAD, res1, 0, swizzle1(lit,Z), specular, _col1);
-
- release_temp(p, ambient);
- release_temp(p, diffuse);
- release_temp(p, specular);
- }
-
- /* Back face lighting:
- */
- if (twoside) {
- struct ureg ambient = get_lightprod(p, i, 1, STATE_AMBIENT);
- struct ureg diffuse = get_lightprod(p, i, 1, STATE_DIFFUSE);
- struct ureg specular = get_lightprod(p, i, 1, STATE_SPECULAR);
- struct ureg res0, res1;
-
- emit_op1(p, VP_OPCODE_LIT, lit, 0, negate(swizzle(dots,X,Y,W,Z)));
-
- if (!is_undef(att))
- emit_op2(p, VP_OPCODE_MUL, lit, 0, lit, att);
-
- if (count == nr_lights) {
- if (separate) {
- res0 = register_output( p, VERT_RESULT_BFC0 );
- res1 = register_output( p, VERT_RESULT_BFC1 );
- }
- else {
- res0 = _bfc0;
- res1 = register_output( p, VERT_RESULT_BFC0 );
- }
- } else {
- res0 = _bfc0;
- res1 = _bfc1;
- }
-
-
- emit_op3(p, VP_OPCODE_MAD, _bfc0, 0, swizzle1(lit,X), ambient, _bfc0);
- emit_op3(p, VP_OPCODE_MAD, res0, 0, swizzle1(lit,Y), diffuse, _bfc0);
- emit_op3(p, VP_OPCODE_MAD, res1, 0, swizzle1(lit,Z), specular, _bfc1);
-
- release_temp(p, ambient);
- release_temp(p, diffuse);
- release_temp(p, specular);
- }
-
- release_temp(p, half);
- release_temp(p, VPpli);
- release_temp(p, att);
- }
- }
-
- release_temps( p );
-}
-
-
-static void build_fog( struct tnl_program *p )
-{
- GLcontext *ctx = p->ctx;
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct ureg fog = register_output(p, VERT_RESULT_FOGC);
- struct ureg input;
-
- if (ctx->Fog.FogCoordinateSource == GL_FRAGMENT_DEPTH_EXT) {
- input = swizzle1(get_eye_position(p), Z);
- }
- else {
- input = swizzle1(register_input(p, VERT_ATTRIB_FOG), X);
- }
- if (tnl->_DoVertexFog) {
- struct ureg params = register_param1(p, STATE_FOG_PARAMS);
- struct ureg tmp = get_temp(p);
-
- switch (ctx->Fog.Mode) {
- case GL_LINEAR: {
- struct ureg id = get_identity_param(p);
- emit_op2(p, VP_OPCODE_SUB, tmp, 0, swizzle1(params,Z), input);
- emit_op2(p, VP_OPCODE_MUL, tmp, 0, tmp, swizzle1(params,W));
- emit_op2(p, VP_OPCODE_MAX, tmp, 0, tmp, swizzle1(id,X)); /* saturate */
- emit_op2(p, VP_OPCODE_MIN, fog, WRITEMASK_X, tmp, swizzle1(id,W));
- break;
- }
- case GL_EXP:
- emit_op1(p, VP_OPCODE_ABS, tmp, 0, input);
- emit_op2(p, VP_OPCODE_MUL, tmp, 0, tmp, swizzle1(params,X));
- emit_op2(p, VP_OPCODE_POW, fog, WRITEMASK_X,
- register_const1f(p, M_E), negate(tmp));
- break;
- case GL_EXP2:
- emit_op2(p, VP_OPCODE_MUL, tmp, 0, input, swizzle1(params,X));
- emit_op2(p, VP_OPCODE_MUL, tmp, 0, tmp, tmp);
- emit_op2(p, VP_OPCODE_POW, fog, WRITEMASK_X,
- register_const1f(p, M_E), negate(tmp));
- break;
- }
-
- release_temp(p, tmp);
- }
- else {
- /* results = incoming fog coords (compute fog per-fragment later)
- *
- * KW: Is it really necessary to do anything in this case?
- */
- emit_op1(p, VP_OPCODE_MOV, fog, WRITEMASK_X, input);
- }
-}
-
-static void build_reflect_texgen( struct tnl_program *p,
- struct ureg dest,
- GLuint writemask )
-{
- struct ureg normal = get_eye_normal(p);
- struct ureg eye_hat = get_eye_position_normalized(p);
- struct ureg tmp = get_temp(p);
-
- /* n.u */
- emit_op2(p, VP_OPCODE_DP3, tmp, 0, normal, eye_hat);
- /* 2n.u */
- emit_op2(p, VP_OPCODE_ADD, tmp, 0, tmp, tmp);
- /* (-2n.u)n + u */
- emit_op3(p, VP_OPCODE_MAD, dest, writemask, negate(tmp), normal, eye_hat);
-}
-
-static void build_sphere_texgen( struct tnl_program *p,
- struct ureg dest,
- GLuint writemask )
-{
- struct ureg normal = get_eye_normal(p);
- struct ureg eye_hat = get_eye_position_normalized(p);
- struct ureg tmp = get_temp(p);
- struct ureg half = register_const1f(p, .5);
- struct ureg r = get_temp(p);
- struct ureg inv_m = get_temp(p);
- struct ureg id = get_identity_param(p);
-
- /* Could share the above calculations, but it would be
- * a fairly odd state for someone to set (both sphere and
- * reflection active for different texture coordinate
- * components. Of course - if two texture units enable
- * reflect and/or sphere, things start to tilt in favour
- * of seperating this out:
- */
-
- /* n.u */
- emit_op2(p, VP_OPCODE_DP3, tmp, 0, normal, eye_hat);
- /* 2n.u */
- emit_op2(p, VP_OPCODE_ADD, tmp, 0, tmp, tmp);
- /* (-2n.u)n + u */
- emit_op3(p, VP_OPCODE_MAD, r, 0, negate(tmp), normal, eye_hat);
- /* r + 0,0,1 */
- emit_op2(p, VP_OPCODE_ADD, tmp, 0, r, swizzle(id,X,Y,W,Z));
- /* rx^2 + ry^2 + (rz+1)^2 */
- emit_op2(p, VP_OPCODE_DP3, tmp, 0, tmp, tmp);
- /* 2/m */
- emit_op1(p, VP_OPCODE_RSQ, tmp, 0, tmp);
- /* 1/m */
- emit_op2(p, VP_OPCODE_MUL, inv_m, 0, tmp, swizzle1(half,X));
- /* r/m + 1/2 */
- emit_op3(p, VP_OPCODE_MAD, dest, writemask, r, inv_m, swizzle1(half,X));
-
- release_temp(p, tmp);
- release_temp(p, r);
- release_temp(p, inv_m);
-}
-
-
-static void build_texture_transform( struct tnl_program *p )
-{
- GLcontext *ctx = p->ctx;
- GLuint i, j;
-
- for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) {
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
- GLuint texmat_enabled = ctx->Texture._TexMatEnabled & ENABLE_TEXMAT(i);
- struct ureg out = register_output(p, VERT_RESULT_TEX0 + i);
-
- if (texUnit->TexGenEnabled || texmat_enabled) {
- struct ureg out_texgen = undef;
-
- if (texUnit->TexGenEnabled) {
- GLuint copy_mask = 0;
- GLuint sphere_mask = 0;
- GLuint reflect_mask = 0;
- GLuint normal_mask = 0;
- GLuint modes[4];
-
- if (texmat_enabled)
- out_texgen = get_temp(p);
- else
- out_texgen = out;
-
- modes[0] = texUnit->GenModeS;
- modes[1] = texUnit->GenModeT;
- modes[2] = texUnit->GenModeR;
- modes[3] = texUnit->GenModeQ;
-
- for (j = 0; j < 4; j++) {
- if (texUnit->TexGenEnabled & (1<<j)) {
- switch (modes[j]) {
- case GL_OBJECT_LINEAR: {
- struct ureg obj = register_input(p, VERT_ATTRIB_POS);
- struct ureg plane =
- register_param3(p, STATE_TEXGEN, i,
- STATE_TEXGEN_OBJECT_S + j);
-
- emit_op2(p, VP_OPCODE_DP4, out_texgen, WRITEMASK_X << j,
- obj, plane );
- break;
- }
- case GL_EYE_LINEAR: {
- struct ureg eye = get_eye_position(p);
- struct ureg plane =
- register_param3(p, STATE_TEXGEN, i,
- STATE_TEXGEN_EYE_S + j);
-
- emit_op2(p, VP_OPCODE_DP4, out_texgen, WRITEMASK_X << j,
- eye, plane );
- break;
- }
- case GL_SPHERE_MAP:
- sphere_mask |= WRITEMASK_X << j;
- break;
- case GL_REFLECTION_MAP_NV:
- reflect_mask |= WRITEMASK_X << j;
- break;
- case GL_NORMAL_MAP_NV:
- normal_mask |= WRITEMASK_X << j;
- break;
- }
- }
- else
- copy_mask |= WRITEMASK_X << j;
- }
-
-
- if (sphere_mask) {
- build_sphere_texgen(p, out_texgen, sphere_mask);
- }
-
- if (reflect_mask) {
- build_reflect_texgen(p, out_texgen, reflect_mask);
- }
-
- if (normal_mask) {
- struct ureg normal = get_eye_normal(p);
- emit_op1(p, VP_OPCODE_MOV, out_texgen, normal_mask, normal );
- }
-
- if (copy_mask) {
- struct ureg in = register_input(p, VERT_ATTRIB_TEX0+i);
- emit_op1(p, VP_OPCODE_MOV, out_texgen, copy_mask, in );
- }
- }
-
- if (texmat_enabled) {
- struct ureg texmat[4];
- struct ureg in = (!is_undef(out_texgen) ?
- out_texgen :
- register_input(p, VERT_ATTRIB_TEX0+i));
- register_matrix_param6( p, STATE_MATRIX, STATE_TEXTURE, i,
- 0, 3, 0, texmat );
- emit_matrix_transform_vec4( p, out, texmat, in );
- }
-
- release_temps(p);
- }
- }
-}
-
-
-/* Seems like it could be tighter:
+/**
+ * XXX This should go away someday, but still referenced by some drivers...
*/
-static void build_pointsize( struct tnl_program *p )
+void _tnl_UpdateFixedFunctionProgram( struct gl_context *ctx )
{
- struct ureg eye = get_eye_position(p);
- struct ureg state_size = register_param1(p, STATE_POINT_SIZE);
- struct ureg state_attenuation = register_param1(p, STATE_POINT_ATTENUATION);
- struct ureg out = register_output(p, VERT_RESULT_PSIZ);
- struct ureg ut = get_temp(p);
-
- /* 1, -Z, Z * Z, 1 */
- emit_op1(p, VP_OPCODE_MOV, ut, 0, swizzle1(get_identity_param(p), W));
- emit_op2(p, VP_OPCODE_MUL, ut, WRITEMASK_YZ, ut, negate(swizzle1(eye, Z)));
- emit_op2(p, VP_OPCODE_MUL, ut, WRITEMASK_Z, ut, negate(swizzle1(eye, Z)));
-
-
- /* p1 + p2 * dist + p3 * dist * dist, 0 */
- emit_op2(p, VP_OPCODE_DP3, ut, 0, ut, state_attenuation);
-
- /* 1 / factor */
- emit_op1(p, VP_OPCODE_RCP, ut, 0, ut );
-
- /* out = pointSize / factor */
- emit_op2(p, VP_OPCODE_MUL, out, WRITEMASK_X, ut, state_size);
+ const struct gl_vertex_program *prev = ctx->VertexProgram._Current;
- release_temp(p, ut);
-}
-
-
-static void build_passthrough( struct tnl_program *p, GLuint inputs )
-{
-}
-
-
-static GLboolean programs_eq( struct vertex_program *a,
- struct vertex_program *b )
-{
- if (!a || !b)
- return GL_FALSE;
-
- if (a->Base.NumInstructions != b->Base.NumInstructions ||
- a->Parameters->NumParameters != b->Parameters->NumParameters)
- return GL_FALSE;
-
- if (memcmp(a->Instructions, b->Instructions,
- a->Base.NumInstructions * sizeof(struct vp_instruction)) != 0)
- return GL_FALSE;
-
- if (memcmp(a->Parameters->Parameters, b->Parameters->Parameters,
- a->Parameters->NumParameters *
- sizeof(struct program_parameter)) != 0)
- return GL_FALSE;
-
- return GL_TRUE;
-}
-
-
-void _tnl_UpdateFixedFunctionProgram( GLcontext *ctx )
-{
- TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct tnl_program p;
-
- if (ctx->VertexProgram._Enabled)
- return;
-
-
- memset(&p, 0, sizeof(p));
- p.ctx = ctx;
- p.program = (struct vertex_program *)ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0);
- p.eye_position = undef;
- p.eye_position_normalized = undef;
- p.eye_normal = undef;
- p.identity = undef;
-
- p.temp_flag = 0;
- p.temp_reserved = ~((1<<MAX_NV_VERTEX_PROGRAM_TEMPS)-1);
- p.program->Instructions = MALLOC(sizeof(struct vp_instruction) * 100);
-
- /* Initialize the arb_program struct */
- p.program->Base.String = 0;
- p.program->Base.NumInstructions =
- p.program->Base.NumTemporaries =
- p.program->Base.NumParameters =
- p.program->Base.NumAttributes = p.program->Base.NumAddressRegs = 0;
-
- if (p.program->Parameters)
- _mesa_free_parameters(p.program->Parameters);
- else
- p.program->Parameters = _mesa_new_parameter_list();
-
- p.program->InputsRead = 0;
- p.program->OutputsWritten = 0;
-
- /* Emit the program, starting with modelviewproject:
- */
- build_hpos(&p);
-
- /* Lighting calculations:
- */
- if (ctx->Light.Enabled)
- build_lighting(&p);
-
- if (ctx->Fog.Enabled)
- build_fog(&p);
-
- if (ctx->Texture._TexGenEnabled || ctx->Texture._TexMatEnabled)
- build_texture_transform(&p);
-
- if (ctx->Point._Attenuated)
- build_pointsize(&p);
-
- /* Is there a need to copy inputs to outputs? The software
- * implementation might do this more efficiently by just assigning
- * the missing results to point at input arrays.
- */
- if (/* tnl->vp_copy_inputs && */
- (tnl->render_inputs & ~p.program->OutputsWritten)) {
- build_passthrough(&p, tnl->render_inputs);
+ if (!ctx->VertexProgram._Current ||
+ ctx->VertexProgram._Current == ctx->VertexProgram._TnlProgram) {
+ ctx->VertexProgram._Current
+ = ctx->VertexProgram._TnlProgram
+ = _mesa_get_fixed_func_vertex_program(ctx);
}
-
- /* Finish up:
+ /* Tell the driver about the change. Could define a new target for
+ * this?
*/
- emit_op1(&p, VP_OPCODE_END, undef, 0, undef);
-
- /* Disassemble:
- */
- if (DISASSEM) {
- _mesa_printf ("\n");
- }
-
-
- /* Notify driver the fragment program has (actually) changed.
- */
- if (!programs_eq(ctx->_TnlProgram, p.program) != 0) {
- if (ctx->_TnlProgram)
- ctx->Driver.DeleteProgram( ctx, &ctx->_TnlProgram->Base );
- ctx->_TnlProgram = p.program;
- }
- else if (p.program) {
- /* Nothing changed...
- */
- ctx->Driver.DeleteProgram( ctx, &p.program->Base );
+ if (ctx->VertexProgram._Current != prev && ctx->Driver.BindProgram) {
+ ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB,
+ (struct gl_program *) ctx->VertexProgram._Current);
}
}