#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.
+ * XXX This should go away someday, but still referenced by some drivers...
*/
-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 ||
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