diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/tnl/t_vp_build.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/tnl/t_vp_build.c | 1497 |
1 files changed, 0 insertions, 1497 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/tnl/t_vp_build.c b/nx-X11/extras/Mesa/src/mesa/tnl/t_vp_build.c deleted file mode 100644 index e62c5b374..000000000 --- a/nx-X11/extras/Mesa/src/mesa/tnl/t_vp_build.c +++ /dev/null @@ -1,1497 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 6.3.1 - * - * Copyright (C) 2005 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 "t_context.h" -#include "t_vp_build.h" - -#include "shader/program.h" -#include "shader/nvvertprog.h" -#include "shader/arbvertparse.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_enabled:1; - unsigned fog_mode:2; - unsigned point_attenuated:1; - unsigned texture_enabled_global:1; - - 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_LINEAR 0 -#define FOG_EXP 1 -#define FOG_EXP2 2 -#define FOG_UNKNOWN 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_UNKNOWN; - } -} - -#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; - struct state_key *key = CALLOC_STRUCT(state_key); - GLuint i; - - 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_ATTRIB_MAT_FRONT_AMBIENT ; i < _TNL_ATTRIB_INDEX ; 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; - - if (ctx->Fog.Enabled) - key->fog_enabled = 1; - - if (key->fog_enabled) { - if (ctx->Fog.FogCoordinateSource == GL_FRAGMENT_DEPTH_EXT) - key->fog_source_is_depth = 1; - - if (tnl->_DoVertexFog) - key->tnl_do_vertex_fog = 1; - - key->fog_mode = translate_fog_mode(ctx->Fog.Mode); - } - - 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 200 - -/* 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 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; -}; - - -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, 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 = ffs( ~p->temp_in_use ); - if (!bit) { - fprintf(stderr, "%s: out of temporaries\n", __FILE__); - exit(1); - } - - 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->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]; - GLint 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_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 == 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]; - GLint 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); - } -} - - -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]; - - if (p->program->Base.NumInstructions > MAX_INSN) { - _mesa_problem(0, "Out of instructions in emit_op3fn\n"); - return; - } - - 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 void emit_passthrough( struct tnl_program *p, - GLuint input, - GLuint output ) -{ - struct ureg out = register_output(p, output); - emit_op1(p, VP_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_param6( p, STATE_MATRIX, STATE_MODELVIEW, 0, 0, 3, - STATE_MATRIX, modelview ); - - emit_matrix_transform_vec4(p, p->eye_position, modelview, pos); - } - else { - register_matrix_param6( p, STATE_MATRIX, STATE_MODELVIEW, 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_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->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, 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]; - - if (PREFER_DP4) { - register_matrix_param6( p, STATE_MATRIX, STATE_MVP, 0, 0, 3, - STATE_MATRIX, mvp ); - emit_matrix_transform_vec4( p, hpos, mvp, pos ); - } - else { - 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 ((property - STATE_AMBIENT) * 2 + - side); -} - -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, 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 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 = 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); - 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 (p->state->unit[i].light_attenuated) { - - /* 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 (!p->state->unit[i].light_spotcutoff_is_180) { - /* 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 ) -{ - 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, 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; - } - - - /* If no lights, still need to emit the scenecolor. - */ - { - struct ureg res0 = register_output( p, VERT_RESULT_COL0 ); - emit_op1(p, VP_OPCODE_MOV, res0, 0, _col0); - } - - if (separate) { - struct ureg res1 = register_output( p, VERT_RESULT_COL1 ); - emit_op1(p, VP_OPCODE_MOV, res1, 0, _col1); - } - - if (twoside) { - struct ureg res0 = register_output( p, VERT_RESULT_BFC0 ); - emit_op1(p, VP_OPCODE_MOV, res0, 0, _bfc0); - } - - if (twoside && separate) { - struct ureg res1 = register_output( p, VERT_RESULT_BFC1 ); - emit_op1(p, VP_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); - 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 (!p->state->unit[i].light_spotcutoff_is_180 || - p->state->unit[i].light_attenuated) { - att = calculate_light_attenuation(p, i, VPpli, dist); - } - - - /* Calculate viewer direction, or use infinite viewer: - */ - if (p->state->light_local_viewer) { - 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; - GLuint mask0, mask1; - - 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) { - 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, VP_OPCODE_MAD, _col0, 0, swizzle1(lit,X), ambient, _col0); - emit_op3(p, VP_OPCODE_MAD, res0, mask0, swizzle1(lit,Y), diffuse, _col0); - emit_op3(p, VP_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, 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) { - 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, VP_OPCODE_MAD, _bfc0, 0, swizzle1(lit,X), ambient, _bfc0); - emit_op3(p, VP_OPCODE_MAD, res0, mask0, swizzle1(lit,Y), diffuse, _bfc0); - emit_op3(p, VP_OPCODE_MAD, res1, mask1, 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 ) -{ - 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->tnl_do_vertex_fog) { - struct ureg params = register_param1(p, STATE_FOG_PARAMS); - struct ureg tmp = get_temp(p); - - switch (p->state->fog_mode) { - case FOG_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 FOG_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 FOG_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_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, 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, half); - /* r/m + 1/2 */ - emit_op3(p, VP_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++) { - GLuint texmat_enabled = p->state->unit[i].texmat_enabled; - - if (p->state->unit[i].texgen_enabled || 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, VP_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, VP_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, 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)); - if (PREFER_DP4) { - register_matrix_param6( p, STATE_MATRIX, STATE_TEXTURE, i, - 0, 3, STATE_MATRIX, texmat ); - emit_matrix_transform_vec4( p, out, texmat, in ); - } - else { - register_matrix_param6( p, STATE_MATRIX, STATE_TEXTURE, i, - 0, 3, STATE_MATRIX_TRANSPOSE, texmat ); - emit_transpose_matrix_transform_vec4( p, out, texmat, in ); - } - } - - release_temps(p); - } - else if (p->state->unit[i].texunit_really_enabled) { - /* KW: _ReallyEnabled isn't sufficient? Need to know whether - * this texture unit is referenced by the fragment shader. - */ - emit_passthrough(p, VERT_ATTRIB_TEX0+i, VERT_RESULT_TEX0+i); - } - } -} - - -/* Seems like it could be tighter: - */ -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); - - /* 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); - - 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->light_global_enabled) - build_lighting(p); - else - emit_passthrough(p, VERT_ATTRIB_COLOR0, VERT_RESULT_COL0); - - if (p->state->fog_enabled) - build_fog(p); - - if (p->state->texture_enabled_global) - build_texture_transform(p); - - if (p->state->point_attenuated) - build_pointsize(p); - - /* Finish up: - */ - emit_op1(p, VP_OPCODE_END, undef, 0, undef); - - /* Disassemble: - */ - if (DISASSEM) { - _mesa_printf ("\n"); - } -} - - -static void -create_new_program( const struct state_key *key, - struct 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->Instructions = MALLOC(sizeof(struct vp_instruction) * MAX_INSN); - 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; - p.program->Parameters = _mesa_new_parameter_list(); - p.program->InputsRead = 0; - p.program->OutputsWritten = 0; - - build_tnl_program( &p ); -} - -static void *search_cache( struct tnl_cache *cache, - GLuint hash, - const void *key, - GLuint keysize) -{ - struct tnl_cache *c; - - for (c = cache; c; c = c->next) { - if (c->hash == hash && memcmp(c->key, key, keysize) == 0) - return c->data; - } - - return NULL; -} - -static void cache_item( struct tnl_cache **cache, - GLuint hash, - void *key, - void *data ) -{ - struct tnl_cache *c = MALLOC(sizeof(*c)); - c->hash = hash; - c->key = key; - c->data = data; - c->next = *cache; - *cache = 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; - - if (ctx->VertexProgram._Enabled) - return; - - /* 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: - */ - ctx->_TnlProgram = (struct vertex_program *) - search_cache( tnl->vp_cache, hash, key, sizeof(*key) ); - - /* OK, we'll have to build a new one: - */ - if (!ctx->_TnlProgram) { - if (0) - _mesa_printf("Build new TNL program\n"); - - ctx->_TnlProgram = (struct vertex_program *) - ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0); - - create_new_program( key, ctx->_TnlProgram, - ctx->Const.MaxVertexProgramTemps ); - - cache_item(&tnl->vp_cache, hash, key, ctx->_TnlProgram ); - } - else { - FREE(key); - if (0) - _mesa_printf("Found existing TNL program for key %x\n", hash); - } - - /* Need a BindProgram callback for the driver? - */ -} - - -void _tnl_ProgramCacheDestroy( GLcontext *ctx ) -{ - TNLcontext *tnl = TNL_CONTEXT(ctx); - struct tnl_cache *a, *tmp; - - for (a = tnl->vp_cache ; a; a = tmp) { - tmp = a->next; - FREE(a->key); - FREE(a->data); - FREE(a); - } -} |