diff options
| -rw-r--r-- | src/mesa/main/ffvertex_prog.c | 1550 | ||||
| -rw-r--r-- | src/mesa/main/ffvertex_prog.h | 38 |
2 files changed, 1588 insertions, 0 deletions
diff --git a/src/mesa/main/ffvertex_prog.c b/src/mesa/main/ffvertex_prog.c new file mode 100644 index 00000000000..8fcb9e5b140 --- /dev/null +++ b/src/mesa/main/ffvertex_prog.c @@ -0,0 +1,1550 @@ +/************************************************************************** + * + * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * 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, sub license, 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 (including the + * next paragraph) 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 ffvertex_prog. + * + * Create a vertex program to execute the current fixed function T&L pipeline. + * \author Keith Whitwell + */ + + +#include "main/glheader.h" +#include "main/mtypes.h" +#include "main/macros.h" +#include "main/enums.h" +#include "main/ffvertex_prog.h" +#include "shader/program.h" +#include "shader/prog_cache.h" +#include "shader/prog_instruction.h" +#include "shader/prog_parameter.h" +#include "shader/prog_print.h" +#include "shader/prog_statevars.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; + } +} + + +/** + * Returns bitmask of flags indicating which materials are set per-vertex + * in the current VB. + * XXX get these from the VBO... + */ +static GLbitfield +tnl_get_per_vertex_materials(GLcontext *ctx) +{ + GLbitfield mask = 0x0; +#if 0 + TNLcontext *tnl = TNL_CONTEXT(ctx); + struct vertex_buffer *VB = &tnl->vb; + GLuint i; + + for (i = _TNL_FIRST_MAT; i <= _TNL_LAST_MAT; i++) + if (VB->AttribPtr[i] && VB->AttribPtr[i]->stride) + mask |= 1 << (i - _TNL_FIRST_MAT); +#endif + return mask; +} + +/** + * Should fog be computed per-vertex? + */ +static GLboolean +tnl_get_per_vertex_fog(GLcontext *ctx) +{ +#if 0 + TNLcontext *tnl = TNL_CONTEXT(ctx); + return tnl->_DoVertexFog; +#else + return GL_FALSE; +#endif +} + + +static struct state_key *make_state_key( GLcontext *ctx ) +{ + const struct gl_fragment_program *fp; + struct state_key *key = CALLOC_STRUCT(state_key); + GLuint i; + + fp = ctx->FragmentProgram._Current; + + /* This now relies on texenvprogram.c being active: + */ + assert(fp); + + key->fragprog_inputs_read = fp->Base.InputsRead; + + if (ctx->RenderMode == GL_FEEDBACK) { + /* make sure the vertprog emits color and tex0 */ + key->fragprog_inputs_read |= (FRAG_BIT_COL0 | FRAG_BIT_TEX0); + } + + 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; + } + + key->light_material_mask = tnl_get_per_vertex_materials(ctx); + + 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; + + key->tnl_do_vertex_fog = tnl_get_per_vertex_fog(ctx); + + 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 256 + +/* 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 ); +} + + +static void emit_arg( struct prog_src_register *src, + struct ureg reg ) +{ + 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; +} + +static void emit_dst( struct prog_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->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; +} + + +/* XXX temporary!!! */ +#define _TNL_ATTRIB_MAT_FRONT_AMBIENT 32 + +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)); + 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, 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, 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); + + VPpli = get_temp(p); + half = get_temp(p); + + /* Calulate VPpli vector + */ + emit_op2(p, OPCODE_SUB, VPpli, 0, Ppli, V); + + /* 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); + } + + + /* 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, 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); + + release_temp(p, dist); + } + + /* Calculate dot products: + */ + emit_op2(p, OPCODE_DP3, dots, WRITEMASK_X, normal, VPpli); + emit_op2(p, 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, 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, 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->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); +} + +/** + * Emit constant point size. + */ +static void constant_pointsize( struct tnl_program *p ) +{ + struct ureg state_size = register_param1(p, STATE_POINT_SIZE); + struct ureg out = register_output(p, VERT_RESULT_PSIZ); + emit_op1(p, OPCODE_MOV, out, WRITEMASK_X, state_size); +} + +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); +#if 0 + else + constant_pointsize(p); +#endif + + /* 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 ); +} + + +/** + * Return a vertex program which implements the current fixed-function + * transform/lighting/texgen operations. + * XXX move this into core mesa (main/) + */ +struct gl_vertex_program * +_mesa_get_fixed_func_vertex_program(GLcontext *ctx) +{ + struct gl_vertex_program *prog; + struct state_key *key; + + /* Grab all the relevent state and put it in a single structure: + */ + key = make_state_key(ctx); + + /* Look for an already-prepared program for this state: + */ + prog = (struct gl_vertex_program *) + _mesa_search_program_cache(ctx->VertexProgram.Cache, key, sizeof(*key)); + + if (!prog) { + /* OK, we'll have to build a new one */ + if (0) + _mesa_printf("Build new TNL program\n"); + + prog = (struct gl_vertex_program *) + ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0); + + create_new_program( key, prog, + ctx->Const.VertexProgram.MaxTemps ); + +#if 0 + if (ctx->Driver.ProgramStringNotify) + ctx->Driver.ProgramStringNotify( ctx, GL_VERTEX_PROGRAM_ARB, + &prog->Base ); +#endif + _mesa_program_cache_insert(ctx, ctx->VertexProgram.Cache, + key, sizeof(*key), &prog->Base); + } + else { + /* use cached program */ + _mesa_free(key); + } + + return prog; +} diff --git a/src/mesa/main/ffvertex_prog.h b/src/mesa/main/ffvertex_prog.h new file mode 100644 index 00000000000..74cafc65c19 --- /dev/null +++ b/src/mesa/main/ffvertex_prog.h @@ -0,0 +1,38 @@ +/************************************************************************** + * + * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. + * 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, sub license, 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 (including the + * next paragraph) 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 NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. + * + **************************************************************************/ + + +#ifndef FFVERTEX_PROG_H +#define FFVERTEX_PROG_H + + +struct gl_vertex_program * +_mesa_get_fixed_func_vertex_program(GLcontext *ctx); + + + +#endif /* FFVERTEX_PROG_H */ |