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gem5 / public / gem5-resources / 8ccd059d5dcaaeffe15cd93c17f1e76e92907662 / . / src / parsec / disk-image / parsec / parsec-benchmark / pkgs / libs / mesa / src / src / mesa / tnl / t_vp_build.c
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/*
* Mesa 3-D graphics library
* Version: 7.1
*
* Copyright (C) 2007 Tungsten Graphics 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
* TUNGSTEN GRAPHICS 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_vp_build.c
* Create a vertex program to execute the current fixed function T&L pipeline.
* \author Keith Whitwell
*/
#include "glheader.h"
#include "macros.h"
#include "enums.h"
#include "shader/program.h"
#include "shader/prog_instruction.h"
#include "shader/prog_parameter.h"
#include "shader/prog_print.h"
#include "shader/prog_statevars.h"
#include "t_context.h" /* NOTE: very light dependency on this */
#include "t_vp_build.h"
struct state_key {
unsigned light_global_enabled:1;
unsigned light_local_viewer:1;
unsigned light_twoside:1;
unsigned light_color_material:1;
unsigned light_color_material_mask:12;
unsigned light_material_mask:12;
unsigned normalize:1;
unsigned rescale_normals:1;
unsigned fog_source_is_depth:1;
unsigned tnl_do_vertex_fog:1;
unsigned separate_specular:1;
unsigned fog_mode:2;
unsigned point_attenuated:1;
unsigned texture_enabled_global:1;
unsigned fragprog_inputs_read:12;
struct {
unsigned light_enabled:1;
unsigned light_eyepos3_is_zero:1;
unsigned light_spotcutoff_is_180:1;
unsigned light_attenuated:1;
unsigned texunit_really_enabled:1;
unsigned texmat_enabled:1;
unsigned texgen_enabled:4;
unsigned texgen_mode0:4;
unsigned texgen_mode1:4;
unsigned texgen_mode2:4;
unsigned texgen_mode3:4;
} unit[8];
};
#define FOG_NONE 0
#define FOG_LINEAR 1
#define FOG_EXP 2
#define FOG_EXP2 3
static GLuint translate_fog_mode( GLenum mode )
{
switch (mode) {
case GL_LINEAR: return FOG_LINEAR;
case GL_EXP: return FOG_EXP;
case GL_EXP2: return FOG_EXP2;
default: return FOG_NONE;
}
}
#define TXG_NONE 0
#define TXG_OBJ_LINEAR 1
#define TXG_EYE_LINEAR 2
#define TXG_SPHERE_MAP 3
#define TXG_REFLECTION_MAP 4
#define TXG_NORMAL_MAP 5
static GLuint translate_texgen( GLboolean enabled, GLenum mode )
{
if (!enabled)
return TXG_NONE;
switch (mode) {
case GL_OBJECT_LINEAR: return TXG_OBJ_LINEAR;
case GL_EYE_LINEAR: return TXG_EYE_LINEAR;
case GL_SPHERE_MAP: return TXG_SPHERE_MAP;
case GL_REFLECTION_MAP_NV: return TXG_REFLECTION_MAP;
case GL_NORMAL_MAP_NV: return TXG_NORMAL_MAP;
default: return TXG_NONE;
}
}
static struct state_key *make_state_key( GLcontext *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct vertex_buffer *VB = &tnl->vb;
const struct gl_fragment_program *fp = ctx->FragmentProgram._Current;
struct state_key *key = CALLOC_STRUCT(state_key);
GLuint i;
/* This now relies on texenvprogram.c being active:
*/
assert(fp);
key->fragprog_inputs_read = fp->Base.InputsRead;
key->separate_specular = (ctx->Light.Model.ColorControl ==
GL_SEPARATE_SPECULAR_COLOR);
if (ctx->Light.Enabled) {
key->light_global_enabled = 1;
if (ctx->Light.Model.LocalViewer)
key->light_local_viewer = 1;
if (ctx->Light.Model.TwoSide)
key->light_twoside = 1;
if (ctx->Light.ColorMaterialEnabled) {
key->light_color_material = 1;
key->light_color_material_mask = ctx->Light.ColorMaterialBitmask;
}
for (i = _TNL_FIRST_MAT; i <= _TNL_LAST_MAT; i++)
if (VB->AttribPtr[i]->stride)
key->light_material_mask |= 1<<(i-_TNL_ATTRIB_MAT_FRONT_AMBIENT);
for (i = 0; i < MAX_LIGHTS; i++) {
struct gl_light *light = &ctx->Light.Light[i];
if (light->Enabled) {
key->unit[i].light_enabled = 1;
if (light->EyePosition[3] == 0.0)
key->unit[i].light_eyepos3_is_zero = 1;
if (light->SpotCutoff == 180.0)
key->unit[i].light_spotcutoff_is_180 = 1;
if (light->ConstantAttenuation != 1.0 ||
light->LinearAttenuation != 0.0 ||
light->QuadraticAttenuation != 0.0)
key->unit[i].light_attenuated = 1;
}
}
}
if (ctx->Transform.Normalize)
key->normalize = 1;
if (ctx->Transform.RescaleNormals)
key->rescale_normals = 1;
key->fog_mode = translate_fog_mode(fp->FogOption);
if (ctx->Fog.FogCoordinateSource == GL_FRAGMENT_DEPTH_EXT)
key->fog_source_is_depth = 1;
if (tnl->_DoVertexFog)
key->tnl_do_vertex_fog = 1;
if (ctx->Point._Attenuated)
key->point_attenuated = 1;
if (ctx->Texture._TexGenEnabled ||
ctx->Texture._TexMatEnabled ||
ctx->Texture._EnabledUnits)
key->texture_enabled_global = 1;
for (i = 0; i < MAX_TEXTURE_UNITS; i++) {
struct gl_texture_unit *texUnit = &ctx->Texture.Unit[i];
if (texUnit->_ReallyEnabled)
key->unit[i].texunit_really_enabled = 1;
if (ctx->Texture._TexMatEnabled & ENABLE_TEXMAT(i))
key->unit[i].texmat_enabled = 1;
if (texUnit->TexGenEnabled) {
key->unit[i].texgen_enabled = 1;
key->unit[i].texgen_mode0 =
translate_texgen( texUnit->TexGenEnabled & (1<<0),
texUnit->GenModeS );
key->unit[i].texgen_mode1 =
translate_texgen( texUnit->TexGenEnabled & (1<<1),
texUnit->GenModeT );
key->unit[i].texgen_mode2 =
translate_texgen( texUnit->TexGenEnabled & (1<<2),
texUnit->GenModeR );
key->unit[i].texgen_mode3 =
translate_texgen( texUnit->TexGenEnabled & (1<<3),
texUnit->GenModeQ );
}
}
return key;
}
/* Very useful debugging tool - produces annotated listing of
* generated program with line/function references for each
* instruction back into this file:
*/
#define DISASSEM (MESA_VERBOSE&VERBOSE_DISASSEM)
/* Should be tunable by the driver - do we want to do matrix
* multiplications with DP4's or with MUL/MAD's? SSE works better
* with the latter, drivers may differ.
*/
#define PREFER_DP4 0
#define MAX_INSN 350
/* 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;
GLint idx:8; /* relative addressing may be negative */
GLuint negate:1;
GLuint swz:12;
GLuint pad:7;
};
struct tnl_program {
const struct state_key *state;
struct gl_vertex_program *program;
GLuint temp_in_use;
GLuint temp_reserved;
struct ureg eye_position;
struct ureg eye_position_normalized;
struct ureg eye_normal;
struct ureg identity;
GLuint materials;
GLuint color_materials;
};
static const struct ureg undef = {
PROGRAM_UNDEFINED,
~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, GLint 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 = _mesa_ffs( ~p->temp_in_use );
if (!bit) {
_mesa_problem(NULL, "%s: out of temporaries\n", __FILE__);
_mesa_exit(1);
}
if ((GLuint) bit > p->program->Base.NumTemporaries)
p->program->Base.NumTemporaries = bit;
p->temp_in_use |= 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_in_use &= ~(1<<reg.idx);
p->temp_in_use |= p->temp_reserved; /* can't release reserved temps */
}
}
static void release_temps( struct tnl_program *p )
{
p->temp_in_use = p->temp_reserved;
}
static struct ureg register_input( struct tnl_program *p, GLuint input )
{
p->program->Base.InputsRead |= (1<<input);
return make_ureg(PROGRAM_INPUT, input);
}
static struct ureg register_output( struct tnl_program *p, GLuint output )
{
p->program->Base.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];
GLint idx;
GLuint swizzle;
values[0] = s0;
values[1] = s1;
values[2] = s2;
values[3] = s3;
idx = _mesa_add_unnamed_constant( p->program->Base.Parameters, values, 4,
&swizzle );
ASSERT(swizzle == SWIZZLE_NOOP);
return make_ureg(PROGRAM_STATE_VAR, idx);
}
#define register_const1f(p, s0) register_const4f(p, s0, 0, 0, 1)
#define register_scalar_const(p, s0) register_const4f(p, s0, s0, s0, s0)
#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 == PROGRAM_UNDEFINED;
}
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_param5(struct tnl_program *p,
GLint s0,
GLint s1,
GLint s2,
GLint s3,
GLint s4)
{
gl_state_index tokens[STATE_LENGTH];
GLint idx;
tokens[0] = s0;
tokens[1] = s1;
tokens[2] = s2;
tokens[3] = s3;
tokens[4] = s4;
idx = _mesa_add_state_reference( p->program->Base.Parameters, tokens );
return make_ureg(PROGRAM_STATE_VAR, idx);
}
#define register_param1(p,s0) register_param5(p,s0,0,0,0,0)
#define register_param2(p,s0,s1) register_param5(p,s0,s1,0,0,0)
#define register_param3(p,s0,s1,s2) register_param5(p,s0,s1,s2,0,0)
#define register_param4(p,s0,s1,s2,s3) register_param5(p,s0,s1,s2,s3,0)
static void register_matrix_param5( struct tnl_program *p,
GLint s0, /* modelview, projection, etc */
GLint s1, /* texture matrix number */
GLint s2, /* first row */
GLint s3, /* last row */
GLint s4, /* inverse, transpose, etc */
struct ureg *matrix )
{
GLint i;
/* This is a bit sad as the support is there to pull the whole
* matrix out in one go:
*/
for (i = 0; i <= s3 - s2; i++)
matrix[i] = register_param5( p, s0, s1, i, i, s4 );
}
/**
* Convert a ureg source register to a prog_src_register.
*/
static void emit_arg( struct prog_src_register *src,
struct ureg reg )
{
assert(reg.file != PROGRAM_OUTPUT);
src->File = reg.file;
src->Index = reg.idx;
src->Swizzle = reg.swz;
src->NegateBase = reg.negate ? NEGATE_XYZW : 0;
src->Abs = 0;
src->NegateAbs = 0;
src->RelAddr = 0;
}
/**
* Convert a ureg dest register to a prog_dst_register.
*/
static void emit_dst( struct prog_dst_register *dst,
struct ureg reg, GLuint mask )
{
/* Check for legal output register type. UNDEFINED will occur in
* instruction that don't produce a result (like END).
*/
assert(reg.file == PROGRAM_TEMPORARY ||
reg.file == PROGRAM_OUTPUT ||
reg.file == PROGRAM_UNDEFINED);
dst->File = reg.file;
dst->Index = reg.idx;
/* allow zero as a shorthand for xyzw */
dst->WriteMask = mask ? mask : WRITEMASK_XYZW;
dst->CondMask = COND_TR; /* always pass cond test */
dst->CondSwizzle = SWIZZLE_NOOP;
dst->CondSrc = 0;
dst->pad = 0;
}
static void debug_insn( struct prog_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_print_instruction(inst);
}
}
static void emit_op3fn(struct tnl_program *p,
enum prog_opcode 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 prog_instruction *inst = &p->program->Base.Instructions[nr];
if (p->program->Base.NumInstructions > MAX_INSN) {
_mesa_problem(0, "Out of instructions in emit_op3fn\n");
return;
}
inst->Opcode = (enum prog_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, 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, OPCODE_DP4, dest, WRITEMASK_X, src, mat[0]);
emit_op2(p, OPCODE_DP4, dest, WRITEMASK_Y, src, mat[1]);
emit_op2(p, OPCODE_DP4, dest, WRITEMASK_Z, src, mat[2]);
emit_op2(p, 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, OPCODE_MUL, tmp, 0, swizzle1(src,X), mat[0]);
emit_op3(p, OPCODE_MAD, tmp, 0, swizzle1(src,Y), mat[1], tmp);
emit_op3(p, OPCODE_MAD, tmp, 0, swizzle1(src,Z), mat[2], tmp);
emit_op3(p, 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, OPCODE_DP3, dest, WRITEMASK_X, src, mat[0]);
emit_op2(p, OPCODE_DP3, dest, WRITEMASK_Y, src, mat[1]);
emit_op2(p, 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, OPCODE_DP3, tmp, 0, src, src);
emit_op1(p, OPCODE_RSQ, tmp, 0, tmp);
emit_op2(p, OPCODE_MUL, dest, 0, src, tmp);
release_temp(p, tmp);
}
static void emit_passthrough( struct tnl_program *p,
GLuint input,
GLuint output )
{
struct ureg out = register_output(p, output);
emit_op1(p, OPCODE_MOV, out, 0, register_input(p, input));
}
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];
p->eye_position = reserve_temp(p);
if (PREFER_DP4) {
register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 3,
0, modelview );
emit_matrix_transform_vec4(p, p->eye_position, modelview, pos);
}
else {
register_matrix_param5( p, STATE_MODELVIEW_MATRIX, 0, 0, 3,
STATE_MATRIX_TRANSPOSE, modelview );
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_param5( p, STATE_MODELVIEW_MATRIX, 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->state->normalize) {
emit_normalize_vec3( p, p->eye_normal, p->eye_normal );
}
else if (p->state->rescale_normals) {
struct ureg rescale = register_param2(p, STATE_INTERNAL,
STATE_NORMAL_SCALE);
emit_op2( p, OPCODE_MUL, p->eye_normal, 0, p->eye_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];
if (PREFER_DP4) {
register_matrix_param5( p, STATE_MVP_MATRIX, 0, 0, 3,
0, mvp );
emit_matrix_transform_vec4( p, hpos, mvp, pos );
}
else {
register_matrix_param5( p, STATE_MVP_MATRIX, 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 ((property - STATE_AMBIENT) * 2 +
side);
}
/* Get a bitmask of which material values vary on a per-vertex basis.
*/
static void set_material_flags( struct tnl_program *p )
{
p->color_materials = 0;
p->materials = 0;
if (p->state->light_color_material) {
p->materials =
p->color_materials = p->state->light_color_material_mask;
}
p->materials |= p->state->light_material_mask;
}
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 + _TNL_ATTRIB_MAT_FRONT_AMBIENT );
else
return register_param3( p, STATE_MATERIAL, side, property );
}
#define SCENE_COLOR_BITS(side) (( MAT_BIT_FRONT_EMISSION | \
MAT_BIT_FRONT_AMBIENT | \
MAT_BIT_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, 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, 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 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 (!p->state->unit[i].light_spotcutoff_is_180) {
struct ureg spot_dir_norm = register_param3(p, STATE_INTERNAL,
STATE_SPOT_DIR_NORMALIZED, i);
struct ureg spot = get_temp(p);
struct ureg slt = get_temp(p);
emit_op2(p, OPCODE_DP3, spot, 0, negate(VPpli), spot_dir_norm);
emit_op2(p, OPCODE_SLT, slt, 0, swizzle1(spot_dir_norm,W), spot);
emit_op2(p, OPCODE_POW, spot, 0, spot, swizzle1(attenuation, W));
emit_op2(p, OPCODE_MUL, att, 0, slt, spot);
release_temp(p, spot);
release_temp(p, slt);
}
/* Calculate distance attenuation:
*/
if (p->state->unit[i].light_attenuated) {
/* 1/d,d,d,1/d */
emit_op1(p, OPCODE_RCP, dist, WRITEMASK_YZ, dist);
/* 1,d,d*d,1/d */
emit_op2(p, OPCODE_MUL, dist, WRITEMASK_XZ, dist, swizzle1(dist,Y));
/* 1/dist-atten */
emit_op2(p, OPCODE_DP3, dist, 0, attenuation, dist);
if (!p->state->unit[i].light_spotcutoff_is_180) {
/* dist-atten */
emit_op1(p, OPCODE_RCP, dist, 0, dist);
/* spot-atten * dist-atten */
emit_op2(p, OPCODE_MUL, att, 0, dist, att);
} else {
/* dist-atten */
emit_op1(p, 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_VECTOR implicitly assume eye
* space lighting.
*/
static void build_lighting( struct tnl_program *p )
{
const GLboolean twoside = p->state->light_twoside;
const GLboolean separate = p->state->separate_specular;
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 (p->state->unit[i].light_enabled)
nr_lights++;
set_material_flags(p);
{
struct ureg shininess = get_material(p, 0, STATE_SHININESS);
emit_op1(p, OPCODE_MOV, dots, WRITEMASK_W, swizzle1(shininess,X));
_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, OPCODE_MOV, dots, WRITEMASK_Z,
negate(swizzle1(shininess,X)));
_bfc0 = make_temp(p, get_scenecolor(p, 1));
if (separate)
_bfc1 = make_temp(p, get_identity_param(p));
else
_bfc1 = _bfc0;
}
/* If no lights, still need to emit the scenecolor.
*/
{
struct ureg res0 = register_output( p, VERT_RESULT_COL0 );
emit_op1(p, OPCODE_MOV, res0, 0, _col0);
}
if (separate) {
struct ureg res1 = register_output( p, VERT_RESULT_COL1 );
emit_op1(p, OPCODE_MOV, res1, 0, _col1);
}
if (twoside) {
struct ureg res0 = register_output( p, VERT_RESULT_BFC0 );
emit_op1(p, OPCODE_MOV, res0, 0, _bfc0);
}
if (twoside && separate) {
struct ureg res1 = register_output( p, VERT_RESULT_BFC1 );
emit_op1(p, OPCODE_MOV, res1, 0, _bfc1);
}
if (nr_lights == 0) {
release_temps(p);
return;
}
for (i = 0; i < MAX_LIGHTS; i++) {
if (p->state->unit[i].light_enabled) {
struct ureg half = undef;
struct ureg att = undef, VPpli = undef;
count++;
if (p->state->unit[i].light_eyepos3_is_zero) {
/* Can used precomputed constants in this case.
* Attenuation never applies to infinite lights.
*/
VPpli = register_param3(p, STATE_LIGHT, i,
STATE_POSITION_NORMALIZED);
if (p->state->light_local_viewer) {
struct ureg eye_hat = get_eye_position_normalized(p);
half = get_temp(p);
emit_op2(p, OPCODE_SUB, half, 0, VPpli, eye_hat);
emit_normalize_vec3(p, half, half);
} else {
half = register_param3(p, STATE_LIGHT, i, STATE_HALF_VECTOR);
}
}
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);
struct ureg tmpPpli = get_temp(p);
VPpli = get_temp(p);
/* In homogeneous object coordinates
*/
emit_op1(p, OPCODE_RCP, dist, 0, swizzle1(Ppli, W));
emit_op2(p, OPCODE_MUL, tmpPpli, 0, Ppli, dist);
/* Calculate VPpli vector
*/
emit_op2(p, OPCODE_SUB, VPpli, 0, tmpPpli, V);
/* we're done with tmpPpli now */
release_temp(p, tmpPpli);
/* Normalize VPpli. The dist value also used in
* attenuation below.
*/
emit_op2(p, OPCODE_DP3, dist, 0, VPpli, VPpli);
emit_op1(p, OPCODE_RSQ, dist, 0, dist);
emit_op2(p, OPCODE_MUL, VPpli, 0, VPpli, dist);
/* Calculate attenuation:
*/
if (!p->state->unit[i].light_spotcutoff_is_180 ||
p->state->unit[i].light_attenuated) {
att = calculate_light_attenuation(p, i, VPpli, dist);
}
/* We're done with dist now */
release_temp(p, dist);
/* Calculate viewer direction, or use infinite viewer:
*/
half = get_temp(p);
if (p->state->light_local_viewer) {
struct ureg eye_hat = get_eye_position_normalized(p);
emit_op2(p, OPCODE_SUB, half, 0, VPpli, eye_hat);
}
else {
struct ureg z_dir = swizzle(get_identity_param(p),X,Y,W,Z);
emit_op2(p, OPCODE_ADD, half, 0, VPpli, z_dir);
}
emit_normalize_vec3(p, half, half);
}
/* Calculate dot products:
*/
emit_op2(p, OPCODE_DP3, dots, WRITEMASK_X, normal, VPpli);
emit_op2(p, OPCODE_DP3, dots, WRITEMASK_Y, normal, half);
/* we're done with VPpli and half now, so free them as to not drive up
our temp usage unnecessary */
release_temp(p, VPpli);
release_temp(p, 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;
GLuint mask0, mask1;
emit_op1(p, OPCODE_LIT, lit, 0, dots);
if (!is_undef(att))
emit_op2(p, OPCODE_MUL, lit, 0, lit, att);
if (count == nr_lights) {
if (separate) {
mask0 = WRITEMASK_XYZ;
mask1 = WRITEMASK_XYZ;
res0 = register_output( p, VERT_RESULT_COL0 );
res1 = register_output( p, VERT_RESULT_COL1 );
}
else {
mask0 = 0;
mask1 = WRITEMASK_XYZ;
res0 = _col0;
res1 = register_output( p, VERT_RESULT_COL0 );
}
} else {
mask0 = 0;
mask1 = 0;
res0 = _col0;
res1 = _col1;
}
emit_op3(p, OPCODE_MAD, _col0, 0, swizzle1(lit,X), ambient, _col0);
emit_op3(p, OPCODE_MAD, res0, mask0, swizzle1(lit,Y), diffuse, _col0);
emit_op3(p, OPCODE_MAD, res1, mask1, 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;
GLuint mask0, mask1;
emit_op1(p, OPCODE_LIT, lit, 0, negate(swizzle(dots,X,Y,W,Z)));
if (!is_undef(att))
emit_op2(p, OPCODE_MUL, lit, 0, lit, att);
if (count == nr_lights) {
if (separate) {
mask0 = WRITEMASK_XYZ;
mask1 = WRITEMASK_XYZ;
res0 = register_output( p, VERT_RESULT_BFC0 );
res1 = register_output( p, VERT_RESULT_BFC1 );
}
else {
mask0 = 0;
mask1 = WRITEMASK_XYZ;
res0 = _bfc0;
res1 = register_output( p, VERT_RESULT_BFC0 );
}
} else {
res0 = _bfc0;
res1 = _bfc1;
mask0 = 0;
mask1 = 0;
}
emit_op3(p, OPCODE_MAD, _bfc0, 0, swizzle1(lit,X), ambient, _bfc0);
emit_op3(p, OPCODE_MAD, res0, mask0, swizzle1(lit,Y), diffuse, _bfc0);
emit_op3(p, OPCODE_MAD, res1, mask1, swizzle1(lit,Z), specular, _bfc1);
release_temp(p, ambient);
release_temp(p, diffuse);
release_temp(p, specular);
}
release_temp(p, att);
}
}
release_temps( p );
}
static void build_fog( struct tnl_program *p )
{
struct ureg fog = register_output(p, VERT_RESULT_FOGC);
struct ureg input;
if (p->state->fog_source_is_depth) {
input = swizzle1(get_eye_position(p), Z);
}
else {
input = swizzle1(register_input(p, VERT_ATTRIB_FOG), X);
}
if (p->state->fog_mode && p->state->tnl_do_vertex_fog) {
struct ureg params = register_param2(p, STATE_INTERNAL,
STATE_FOG_PARAMS_OPTIMIZED);
struct ureg tmp = get_temp(p);
GLboolean useabs = (p->state->fog_mode != FOG_EXP2);
if (useabs) {
emit_op1(p, OPCODE_ABS, tmp, 0, input);
}
switch (p->state->fog_mode) {
case FOG_LINEAR: {
struct ureg id = get_identity_param(p);
emit_op3(p, OPCODE_MAD, tmp, 0, useabs ? tmp : input,
swizzle1(params,X), swizzle1(params,Y));
emit_op2(p, OPCODE_MAX, tmp, 0, tmp, swizzle1(id,X)); /* saturate */
emit_op2(p, OPCODE_MIN, fog, WRITEMASK_X, tmp, swizzle1(id,W));
break;
}
case FOG_EXP:
emit_op2(p, OPCODE_MUL, tmp, 0, useabs ? tmp : input,
swizzle1(params,Z));
emit_op1(p, OPCODE_EX2, fog, WRITEMASK_X, negate(tmp));
break;
case FOG_EXP2:
emit_op2(p, OPCODE_MUL, tmp, 0, input, swizzle1(params,W));
emit_op2(p, OPCODE_MUL, tmp, 0, tmp, tmp);
emit_op1(p, OPCODE_EX2, fog, WRITEMASK_X, 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?
* BP: Yes, we always need to compute the absolute value, unless
* we want to push that down into the fragment program...
*/
GLboolean useabs = GL_TRUE;
emit_op1(p, useabs ? OPCODE_ABS : 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, OPCODE_DP3, tmp, 0, normal, eye_hat);
/* 2n.u */
emit_op2(p, OPCODE_ADD, tmp, 0, tmp, tmp);
/* (-2n.u)n + u */
emit_op3(p, OPCODE_MAD, dest, writemask, negate(tmp), normal, eye_hat);
release_temp(p, tmp);
}
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_scalar_const(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, OPCODE_DP3, tmp, 0, normal, eye_hat);
/* 2n.u */
emit_op2(p, OPCODE_ADD, tmp, 0, tmp, tmp);
/* (-2n.u)n + u */
emit_op3(p, OPCODE_MAD, r, 0, negate(tmp), normal, eye_hat);
/* r + 0,0,1 */
emit_op2(p, OPCODE_ADD, tmp, 0, r, swizzle(id,X,Y,W,Z));
/* rx^2 + ry^2 + (rz+1)^2 */
emit_op2(p, OPCODE_DP3, tmp, 0, tmp, tmp);
/* 2/m */
emit_op1(p, OPCODE_RSQ, tmp, 0, tmp);
/* 1/m */
emit_op2(p, OPCODE_MUL, inv_m, 0, tmp, half);
/* r/m + 1/2 */
emit_op3(p, OPCODE_MAD, dest, writemask, r, inv_m, half);
release_temp(p, tmp);
release_temp(p, r);
release_temp(p, inv_m);
}
static void build_texture_transform( struct tnl_program *p )
{
GLuint i, j;
for (i = 0; i < MAX_TEXTURE_UNITS; i++) {
if (!(p->state->fragprog_inputs_read & FRAG_BIT_TEX(i)))
continue;
if (p->state->unit[i].texgen_enabled ||
p->state->unit[i].texmat_enabled) {
GLuint texmat_enabled = p->state->unit[i].texmat_enabled;
struct ureg out = register_output(p, VERT_RESULT_TEX0 + i);
struct ureg out_texgen = undef;
if (p->state->unit[i].texgen_enabled) {
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] = p->state->unit[i].texgen_mode0;
modes[1] = p->state->unit[i].texgen_mode1;
modes[2] = p->state->unit[i].texgen_mode2;
modes[3] = p->state->unit[i].texgen_mode3;
for (j = 0; j < 4; j++) {
switch (modes[j]) {
case TXG_OBJ_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, OPCODE_DP4, out_texgen, WRITEMASK_X << j,
obj, plane );
break;
}
case TXG_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, OPCODE_DP4, out_texgen, WRITEMASK_X << j,
eye, plane );
break;
}
case TXG_SPHERE_MAP:
sphere_mask |= WRITEMASK_X << j;
break;
case TXG_REFLECTION_MAP:
reflect_mask |= WRITEMASK_X << j;
break;
case TXG_NORMAL_MAP:
normal_mask |= WRITEMASK_X << j;
break;
case TXG_NONE:
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, OPCODE_MOV, out_texgen, normal_mask, normal );
}
if (copy_mask) {
struct ureg in = register_input(p, VERT_ATTRIB_TEX0+i);
emit_op1(p, 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));
if (PREFER_DP4) {
register_matrix_param5( p, STATE_TEXTURE_MATRIX, i, 0, 3,
0, texmat );
emit_matrix_transform_vec4( p, out, texmat, in );
}
else {
register_matrix_param5( p, STATE_TEXTURE_MATRIX, i, 0, 3,
STATE_MATRIX_TRANSPOSE, texmat );
emit_transpose_matrix_transform_vec4( p, out, texmat, in );
}
}
release_temps(p);
}
else {
emit_passthrough(p, VERT_ATTRIB_TEX0+i, VERT_RESULT_TEX0+i);
}
}
}
static void build_pointsize( struct tnl_program *p )
{
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);
/* dist = |eyez| */
emit_op1(p, OPCODE_ABS, ut, WRITEMASK_Y, swizzle1(eye, Z));
/* p1 + dist * (p2 + dist * p3); */
emit_op3(p, OPCODE_MAD, ut, WRITEMASK_X, swizzle1(ut, Y),
swizzle1(state_attenuation, Z), swizzle1(state_attenuation, Y));
emit_op3(p, OPCODE_MAD, ut, WRITEMASK_X, swizzle1(ut, Y),
ut, swizzle1(state_attenuation, X));
/* 1 / sqrt(factor) */
emit_op1(p, OPCODE_RSQ, ut, WRITEMASK_X, ut );
#if 1
/* out = pointSize / sqrt(factor) */
emit_op2(p, OPCODE_MUL, out, WRITEMASK_X, ut, state_size);
#else
/* not sure, might make sense to do clamping here,
but it's not done in t_vb_points neither */
emit_op2(p, OPCODE_MUL, ut, WRITEMASK_X, ut, state_size);
emit_op2(p, OPCODE_MAX, ut, WRITEMASK_X, ut, swizzle1(state_size, Y));
emit_op2(p, OPCODE_MIN, out, WRITEMASK_X, ut, swizzle1(state_size, Z));
#endif
release_temp(p, ut);
}
static void build_tnl_program( struct tnl_program *p )
{ /* Emit the program, starting with modelviewproject:
*/
build_hpos(p);
/* Lighting calculations:
*/
if (p->state->fragprog_inputs_read & (FRAG_BIT_COL0|FRAG_BIT_COL1)) {
if (p->state->light_global_enabled)
build_lighting(p);
else {
if (p->state->fragprog_inputs_read & FRAG_BIT_COL0)
emit_passthrough(p, VERT_ATTRIB_COLOR0, VERT_RESULT_COL0);
if (p->state->fragprog_inputs_read & FRAG_BIT_COL1)
emit_passthrough(p, VERT_ATTRIB_COLOR1, VERT_RESULT_COL1);
}
}
if ((p->state->fragprog_inputs_read & FRAG_BIT_FOGC) ||
p->state->fog_mode != FOG_NONE)
build_fog(p);
if (p->state->fragprog_inputs_read & FRAG_BITS_TEX_ANY)
build_texture_transform(p);
if (p->state->point_attenuated)
build_pointsize(p);
/* Finish up:
*/
emit_op1(p, OPCODE_END, undef, 0, undef);
/* Disassemble:
*/
if (DISASSEM) {
_mesa_printf ("\n");
}
}
static void
create_new_program( const struct state_key *key,
struct gl_vertex_program *program,
GLuint max_temps)
{
struct tnl_program p;
_mesa_memset(&p, 0, sizeof(p));
p.state = key;
p.program = program;
p.eye_position = undef;
p.eye_position_normalized = undef;
p.eye_normal = undef;
p.identity = undef;
p.temp_in_use = 0;
if (max_temps >= sizeof(int) * 8)
p.temp_reserved = 0;
else
p.temp_reserved = ~((1<<max_temps)-1);
p.program->Base.Instructions = _mesa_alloc_instructions(MAX_INSN);
p.program->Base.String = NULL;
p.program->Base.NumInstructions =
p.program->Base.NumTemporaries =
p.program->Base.NumParameters =
p.program->Base.NumAttributes = p.program->Base.NumAddressRegs = 0;
p.program->Base.Parameters = _mesa_new_parameter_list();
p.program->Base.InputsRead = 0;
p.program->Base.OutputsWritten = 0;
build_tnl_program( &p );
}
static struct gl_vertex_program *
search_cache(struct tnl_cache *cache, GLuint hash,
const void *key, GLuint keysize)
{
struct tnl_cache_item *c;
for (c = cache->items[hash % cache->size]; c; c = c->next) {
if (c->hash == hash && _mesa_memcmp(c->key, key, keysize) == 0)
return c->prog;
}
return NULL;
}
static void rehash( struct tnl_cache *cache )
{
struct tnl_cache_item **items;
struct tnl_cache_item *c, *next;
GLuint size, i;
size = cache->size * 3;
items = (struct tnl_cache_item**) _mesa_malloc(size * sizeof(*items));
_mesa_memset(items, 0, size * sizeof(*items));
for (i = 0; i < cache->size; i++)
for (c = cache->items[i]; c; c = next) {
next = c->next;
c->next = items[c->hash % size];
items[c->hash % size] = c;
}
FREE(cache->items);
cache->items = items;
cache->size = size;
}
static void cache_item( GLcontext *ctx,
struct tnl_cache *cache,
GLuint hash,
void *key,
struct gl_vertex_program *prog )
{
struct tnl_cache_item *c = CALLOC_STRUCT(tnl_cache_item);
c->hash = hash;
c->key = key;
c->prog = prog;
if (++cache->n_items > cache->size * 1.5)
rehash(cache);
c->next = cache->items[hash % cache->size];
cache->items[hash % cache->size] = c;
}
static GLuint hash_key( struct state_key *key )
{
GLuint *ikey = (GLuint *)key;
GLuint hash = 0, i;
/* I'm sure this can be improved on, but speed is important:
*/
for (i = 0; i < sizeof(*key)/sizeof(GLuint); i++)
hash ^= ikey[i];
return hash;
}
void _tnl_UpdateFixedFunctionProgram( GLcontext *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct state_key *key;
GLuint hash;
const struct gl_vertex_program *prev = ctx->VertexProgram._Current;
if (!ctx->VertexProgram._Current ||
ctx->VertexProgram._Current == ctx->VertexProgram._TnlProgram) {
struct gl_vertex_program *newProg;
/* Grab all the relevent state and put it in a single structure:
*/
key = make_state_key(ctx);
hash = hash_key(key);
/* Look for an already-prepared program for this state:
*/
newProg = search_cache( tnl->vp_cache, hash, key, sizeof(*key));
/* OK, we'll have to build a new one:
*/
if (!newProg) {
if (0)
_mesa_printf("Build new TNL program\n");
newProg = (struct gl_vertex_program *)
ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0);
create_new_program( key, newProg, ctx->Const.VertexProgram.MaxTemps );
if (ctx->Driver.ProgramStringNotify)
ctx->Driver.ProgramStringNotify( ctx, GL_VERTEX_PROGRAM_ARB,
&newProg->Base );
/* Our ownership of newProg is transferred to the cache */
cache_item(ctx, tnl->vp_cache, hash, key, newProg);
}
else {
FREE(key);
}
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram, newProg);
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, newProg);
}
/* Tell the driver about the change. Could define a new target for
* this?
*/
if (ctx->VertexProgram._Current != prev && ctx->Driver.BindProgram) {
ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB,
(struct gl_program *) ctx->VertexProgram._Current);
}
}
void _tnl_ProgramCacheInit( GLcontext *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
tnl->vp_cache = (struct tnl_cache *) MALLOC(sizeof(*tnl->vp_cache));
tnl->vp_cache->size = 17;
tnl->vp_cache->n_items = 0;
tnl->vp_cache->items = (struct tnl_cache_item**)
_mesa_calloc(tnl->vp_cache->size * sizeof(*tnl->vp_cache->items));
}
void _tnl_ProgramCacheDestroy( GLcontext *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
struct tnl_cache_item *c, *next;
GLuint i;
for (i = 0; i < tnl->vp_cache->size; i++)
for (c = tnl->vp_cache->items[i]; c; c = next) {
next = c->next;
FREE(c->key);
_mesa_reference_vertprog(ctx, &c->prog, NULL);
FREE(c);
}
FREE(tnl->vp_cache->items);
FREE(tnl->vp_cache);
}