2 * Mesa 3-D graphics library
5 * Copyright (C) 2006 Tungsten Graphics All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * TUNGSTEN GRAPHICS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Create a vertex program to execute the current fixed function T&L pipeline.
29 * \author Keith Whitwell
36 #include "shader/program.h"
37 #include "shader/prog_instruction.h"
38 #include "shader/prog_parameter.h"
39 #include "shader/prog_print.h"
40 #include "shader/prog_statevars.h"
41 #include "t_context.h" /* NOTE: very light dependency on this */
42 #include "t_vp_build.h"
46 unsigned light_global_enabled
:1;
47 unsigned light_local_viewer
:1;
48 unsigned light_twoside
:1;
49 unsigned light_color_material
:1;
50 unsigned light_color_material_mask
:12;
51 unsigned light_material_mask
:12;
54 unsigned rescale_normals
:1;
55 unsigned fog_source_is_depth
:1;
56 unsigned tnl_do_vertex_fog
:1;
57 unsigned separate_specular
:1;
59 unsigned point_attenuated
:1;
60 unsigned texture_enabled_global
:1;
61 unsigned fragprog_inputs_read
:12;
64 unsigned light_enabled
:1;
65 unsigned light_eyepos3_is_zero
:1;
66 unsigned light_spotcutoff_is_180
:1;
67 unsigned light_attenuated
:1;
68 unsigned texunit_really_enabled
:1;
69 unsigned texmat_enabled
:1;
70 unsigned texgen_enabled
:4;
71 unsigned texgen_mode0
:4;
72 unsigned texgen_mode1
:4;
73 unsigned texgen_mode2
:4;
74 unsigned texgen_mode3
:4;
85 static GLuint
translate_fog_mode( GLenum mode
)
88 case GL_LINEAR
: return FOG_LINEAR
;
89 case GL_EXP
: return FOG_EXP
;
90 case GL_EXP2
: return FOG_EXP2
;
91 default: return FOG_NONE
;
96 #define TXG_OBJ_LINEAR 1
97 #define TXG_EYE_LINEAR 2
98 #define TXG_SPHERE_MAP 3
99 #define TXG_REFLECTION_MAP 4
100 #define TXG_NORMAL_MAP 5
102 static GLuint
translate_texgen( GLboolean enabled
, GLenum mode
)
108 case GL_OBJECT_LINEAR
: return TXG_OBJ_LINEAR
;
109 case GL_EYE_LINEAR
: return TXG_EYE_LINEAR
;
110 case GL_SPHERE_MAP
: return TXG_SPHERE_MAP
;
111 case GL_REFLECTION_MAP_NV
: return TXG_REFLECTION_MAP
;
112 case GL_NORMAL_MAP_NV
: return TXG_NORMAL_MAP
;
113 default: return TXG_NONE
;
117 static struct state_key
*make_state_key( GLcontext
*ctx
)
119 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
120 struct vertex_buffer
*VB
= &tnl
->vb
;
121 const struct gl_fragment_program
*fp
;
122 struct state_key
*key
= CALLOC_STRUCT(state_key
);
125 if (ctx
->Shader
.CurrentProgram
&&
126 ctx
->Shader
.CurrentProgram
->LinkStatus
&&
127 ctx
->Shader
.CurrentProgram
->FragmentProgram
)
128 fp
= ctx
->Shader
.CurrentProgram
->FragmentProgram
;
130 fp
= ctx
->FragmentProgram
._Current
;
132 /* This now relies on texenvprogram.c being active:
136 key
->fragprog_inputs_read
= fp
->Base
.InputsRead
;
138 if (ctx
->RenderMode
== GL_FEEDBACK
) {
139 /* make sure the vertprog emits color and tex0 */
140 key
->fragprog_inputs_read
|= (FRAG_BIT_COL0
| FRAG_BIT_TEX0
);
143 key
->separate_specular
= (ctx
->Light
.Model
.ColorControl
==
144 GL_SEPARATE_SPECULAR_COLOR
);
146 if (ctx
->Light
.Enabled
) {
147 key
->light_global_enabled
= 1;
149 if (ctx
->Light
.Model
.LocalViewer
)
150 key
->light_local_viewer
= 1;
152 if (ctx
->Light
.Model
.TwoSide
)
153 key
->light_twoside
= 1;
155 if (ctx
->Light
.ColorMaterialEnabled
) {
156 key
->light_color_material
= 1;
157 key
->light_color_material_mask
= ctx
->Light
.ColorMaterialBitmask
;
160 for (i
= _TNL_FIRST_MAT
; i
<= _TNL_LAST_MAT
; i
++)
161 if (VB
->AttribPtr
[i
] && VB
->AttribPtr
[i
]->stride
)
162 key
->light_material_mask
|= 1<<(i
-_TNL_ATTRIB_MAT_FRONT_AMBIENT
);
164 for (i
= 0; i
< MAX_LIGHTS
; i
++) {
165 struct gl_light
*light
= &ctx
->Light
.Light
[i
];
167 if (light
->Enabled
) {
168 key
->unit
[i
].light_enabled
= 1;
170 if (light
->EyePosition
[3] == 0.0)
171 key
->unit
[i
].light_eyepos3_is_zero
= 1;
173 if (light
->SpotCutoff
== 180.0)
174 key
->unit
[i
].light_spotcutoff_is_180
= 1;
176 if (light
->ConstantAttenuation
!= 1.0 ||
177 light
->LinearAttenuation
!= 0.0 ||
178 light
->QuadraticAttenuation
!= 0.0)
179 key
->unit
[i
].light_attenuated
= 1;
184 if (ctx
->Transform
.Normalize
)
187 if (ctx
->Transform
.RescaleNormals
)
188 key
->rescale_normals
= 1;
190 key
->fog_mode
= translate_fog_mode(fp
->FogOption
);
192 if (ctx
->Fog
.FogCoordinateSource
== GL_FRAGMENT_DEPTH_EXT
)
193 key
->fog_source_is_depth
= 1;
195 if (tnl
->_DoVertexFog
)
196 key
->tnl_do_vertex_fog
= 1;
198 if (ctx
->Point
._Attenuated
)
199 key
->point_attenuated
= 1;
201 if (ctx
->Texture
._TexGenEnabled
||
202 ctx
->Texture
._TexMatEnabled
||
203 ctx
->Texture
._EnabledUnits
)
204 key
->texture_enabled_global
= 1;
206 for (i
= 0; i
< MAX_TEXTURE_UNITS
; i
++) {
207 struct gl_texture_unit
*texUnit
= &ctx
->Texture
.Unit
[i
];
209 if (texUnit
->_ReallyEnabled
)
210 key
->unit
[i
].texunit_really_enabled
= 1;
212 if (ctx
->Texture
._TexMatEnabled
& ENABLE_TEXMAT(i
))
213 key
->unit
[i
].texmat_enabled
= 1;
215 if (texUnit
->TexGenEnabled
) {
216 key
->unit
[i
].texgen_enabled
= 1;
218 key
->unit
[i
].texgen_mode0
=
219 translate_texgen( texUnit
->TexGenEnabled
& (1<<0),
221 key
->unit
[i
].texgen_mode1
=
222 translate_texgen( texUnit
->TexGenEnabled
& (1<<1),
224 key
->unit
[i
].texgen_mode2
=
225 translate_texgen( texUnit
->TexGenEnabled
& (1<<2),
227 key
->unit
[i
].texgen_mode3
=
228 translate_texgen( texUnit
->TexGenEnabled
& (1<<3),
238 /* Very useful debugging tool - produces annotated listing of
239 * generated program with line/function references for each
240 * instruction back into this file:
242 #define DISASSEM (MESA_VERBOSE&VERBOSE_DISASSEM)
244 /* Should be tunable by the driver - do we want to do matrix
245 * multiplications with DP4's or with MUL/MAD's? SSE works better
246 * with the latter, drivers may differ.
252 /* Use uregs to represent registers internally, translate to Mesa's
253 * expected formats on emit.
255 * NOTE: These are passed by value extensively in this file rather
256 * than as usual by pointer reference. If this disturbs you, try
257 * remembering they are just 32bits in size.
259 * GCC is smart enough to deal with these dword-sized structures in
260 * much the same way as if I had defined them as dwords and was using
261 * macros to access and set the fields. This is much nicer and easier
266 GLint idx
:8; /* relative addressing may be negative */
274 const struct state_key
*state
;
275 struct gl_vertex_program
*program
;
278 GLuint temp_reserved
;
280 struct ureg eye_position
;
281 struct ureg eye_position_normalized
;
282 struct ureg eye_normal
;
283 struct ureg identity
;
286 GLuint color_materials
;
290 static const struct ureg undef
= {
308 static struct ureg
make_ureg(GLuint file
, GLint idx
)
314 reg
.swz
= SWIZZLE_NOOP
;
321 static struct ureg
negate( struct ureg reg
)
328 static struct ureg
swizzle( struct ureg reg
, int x
, int y
, int z
, int w
)
330 reg
.swz
= MAKE_SWIZZLE4(GET_SWZ(reg
.swz
, x
),
333 GET_SWZ(reg
.swz
, w
));
338 static struct ureg
swizzle1( struct ureg reg
, int x
)
340 return swizzle(reg
, x
, x
, x
, x
);
343 static struct ureg
get_temp( struct tnl_program
*p
)
345 int bit
= _mesa_ffs( ~p
->temp_in_use
);
347 _mesa_problem(NULL
, "%s: out of temporaries\n", __FILE__
);
351 if ((GLuint
) bit
> p
->program
->Base
.NumTemporaries
)
352 p
->program
->Base
.NumTemporaries
= bit
;
354 p
->temp_in_use
|= 1<<(bit
-1);
355 return make_ureg(PROGRAM_TEMPORARY
, bit
-1);
358 static struct ureg
reserve_temp( struct tnl_program
*p
)
360 struct ureg temp
= get_temp( p
);
361 p
->temp_reserved
|= 1<<temp
.idx
;
365 static void release_temp( struct tnl_program
*p
, struct ureg reg
)
367 if (reg
.file
== PROGRAM_TEMPORARY
) {
368 p
->temp_in_use
&= ~(1<<reg
.idx
);
369 p
->temp_in_use
|= p
->temp_reserved
; /* can't release reserved temps */
373 static void release_temps( struct tnl_program
*p
)
375 p
->temp_in_use
= p
->temp_reserved
;
380 static struct ureg
register_input( struct tnl_program
*p
, GLuint input
)
382 p
->program
->Base
.InputsRead
|= (1<<input
);
383 return make_ureg(PROGRAM_INPUT
, input
);
386 static struct ureg
register_output( struct tnl_program
*p
, GLuint output
)
388 p
->program
->Base
.OutputsWritten
|= (1<<output
);
389 return make_ureg(PROGRAM_OUTPUT
, output
);
392 static struct ureg
register_const4f( struct tnl_program
*p
,
405 idx
= _mesa_add_unnamed_constant( p
->program
->Base
.Parameters
, values
, 4,
407 ASSERT(swizzle
== SWIZZLE_NOOP
);
408 return make_ureg(PROGRAM_STATE_VAR
, idx
);
411 #define register_const1f(p, s0) register_const4f(p, s0, 0, 0, 1)
412 #define register_scalar_const(p, s0) register_const4f(p, s0, s0, s0, s0)
413 #define register_const2f(p, s0, s1) register_const4f(p, s0, s1, 0, 1)
414 #define register_const3f(p, s0, s1, s2) register_const4f(p, s0, s1, s2, 1)
416 static GLboolean
is_undef( struct ureg reg
)
418 return reg
.file
== PROGRAM_UNDEFINED
;
421 static struct ureg
get_identity_param( struct tnl_program
*p
)
423 if (is_undef(p
->identity
))
424 p
->identity
= register_const4f(p
, 0,0,0,1);
429 static struct ureg
register_param5(struct tnl_program
*p
,
436 gl_state_index tokens
[STATE_LENGTH
];
443 idx
= _mesa_add_state_reference( p
->program
->Base
.Parameters
, tokens
);
444 return make_ureg(PROGRAM_STATE_VAR
, idx
);
448 #define register_param1(p,s0) register_param5(p,s0,0,0,0,0)
449 #define register_param2(p,s0,s1) register_param5(p,s0,s1,0,0,0)
450 #define register_param3(p,s0,s1,s2) register_param5(p,s0,s1,s2,0,0)
451 #define register_param4(p,s0,s1,s2,s3) register_param5(p,s0,s1,s2,s3,0)
454 static void register_matrix_param5( struct tnl_program
*p
,
455 GLint s0
, /* modelview, projection, etc */
456 GLint s1
, /* texture matrix number */
457 GLint s2
, /* first row */
458 GLint s3
, /* last row */
459 GLint s4
, /* inverse, transpose, etc */
460 struct ureg
*matrix
)
464 /* This is a bit sad as the support is there to pull the whole
465 * matrix out in one go:
467 for (i
= 0; i
<= s3
- s2
; i
++)
468 matrix
[i
] = register_param5( p
, s0
, s1
, i
, i
, s4
);
472 static void emit_arg( struct prog_src_register
*src
,
475 src
->File
= reg
.file
;
476 src
->Index
= reg
.idx
;
477 src
->Swizzle
= reg
.swz
;
478 src
->NegateBase
= reg
.negate
? NEGATE_XYZW
: 0;
484 static void emit_dst( struct prog_dst_register
*dst
,
485 struct ureg reg
, GLuint mask
)
487 dst
->File
= reg
.file
;
488 dst
->Index
= reg
.idx
;
489 /* allow zero as a shorthand for xyzw */
490 dst
->WriteMask
= mask
? mask
: WRITEMASK_XYZW
;
491 dst
->CondMask
= COND_TR
;
492 dst
->CondSwizzle
= 0;
497 static void debug_insn( struct prog_instruction
*inst
, const char *fn
,
501 static const char *last_fn
;
505 _mesa_printf("%s:\n", fn
);
508 _mesa_printf("%d:\t", line
);
509 _mesa_print_instruction(inst
);
514 static void emit_op3fn(struct tnl_program
*p
,
524 GLuint nr
= p
->program
->Base
.NumInstructions
++;
525 struct prog_instruction
*inst
= &p
->program
->Base
.Instructions
[nr
];
527 if (p
->program
->Base
.NumInstructions
> MAX_INSN
) {
528 _mesa_problem(0, "Out of instructions in emit_op3fn\n");
532 inst
->Opcode
= (enum prog_opcode
) op
;
536 emit_arg( &inst
->SrcReg
[0], src0
);
537 emit_arg( &inst
->SrcReg
[1], src1
);
538 emit_arg( &inst
->SrcReg
[2], src2
);
540 emit_dst( &inst
->DstReg
, dest
, mask
);
542 debug_insn(inst
, fn
, line
);
546 #define emit_op3(p, op, dst, mask, src0, src1, src2) \
547 emit_op3fn(p, op, dst, mask, src0, src1, src2, __FUNCTION__, __LINE__)
549 #define emit_op2(p, op, dst, mask, src0, src1) \
550 emit_op3fn(p, op, dst, mask, src0, src1, undef, __FUNCTION__, __LINE__)
552 #define emit_op1(p, op, dst, mask, src0) \
553 emit_op3fn(p, op, dst, mask, src0, undef, undef, __FUNCTION__, __LINE__)
556 static struct ureg
make_temp( struct tnl_program
*p
, struct ureg reg
)
558 if (reg
.file
== PROGRAM_TEMPORARY
&&
559 !(p
->temp_reserved
& (1<<reg
.idx
)))
562 struct ureg temp
= get_temp(p
);
563 emit_op1(p
, OPCODE_MOV
, temp
, 0, reg
);
569 /* Currently no tracking performed of input/output/register size or
570 * active elements. Could be used to reduce these operations, as
571 * could the matrix type.
573 static void emit_matrix_transform_vec4( struct tnl_program
*p
,
575 const struct ureg
*mat
,
578 emit_op2(p
, OPCODE_DP4
, dest
, WRITEMASK_X
, src
, mat
[0]);
579 emit_op2(p
, OPCODE_DP4
, dest
, WRITEMASK_Y
, src
, mat
[1]);
580 emit_op2(p
, OPCODE_DP4
, dest
, WRITEMASK_Z
, src
, mat
[2]);
581 emit_op2(p
, OPCODE_DP4
, dest
, WRITEMASK_W
, src
, mat
[3]);
584 /* This version is much easier to implement if writemasks are not
585 * supported natively on the target or (like SSE), the target doesn't
586 * have a clean/obvious dotproduct implementation.
588 static void emit_transpose_matrix_transform_vec4( struct tnl_program
*p
,
590 const struct ureg
*mat
,
595 if (dest
.file
!= PROGRAM_TEMPORARY
)
600 emit_op2(p
, OPCODE_MUL
, tmp
, 0, swizzle1(src
,X
), mat
[0]);
601 emit_op3(p
, OPCODE_MAD
, tmp
, 0, swizzle1(src
,Y
), mat
[1], tmp
);
602 emit_op3(p
, OPCODE_MAD
, tmp
, 0, swizzle1(src
,Z
), mat
[2], tmp
);
603 emit_op3(p
, OPCODE_MAD
, dest
, 0, swizzle1(src
,W
), mat
[3], tmp
);
605 if (dest
.file
!= PROGRAM_TEMPORARY
)
606 release_temp(p
, tmp
);
609 static void emit_matrix_transform_vec3( struct tnl_program
*p
,
611 const struct ureg
*mat
,
614 emit_op2(p
, OPCODE_DP3
, dest
, WRITEMASK_X
, src
, mat
[0]);
615 emit_op2(p
, OPCODE_DP3
, dest
, WRITEMASK_Y
, src
, mat
[1]);
616 emit_op2(p
, OPCODE_DP3
, dest
, WRITEMASK_Z
, src
, mat
[2]);
620 static void emit_normalize_vec3( struct tnl_program
*p
,
624 struct ureg tmp
= get_temp(p
);
625 emit_op2(p
, OPCODE_DP3
, tmp
, 0, src
, src
);
626 emit_op1(p
, OPCODE_RSQ
, tmp
, 0, tmp
);
627 emit_op2(p
, OPCODE_MUL
, dest
, 0, src
, tmp
);
628 release_temp(p
, tmp
);
631 static void emit_passthrough( struct tnl_program
*p
,
635 struct ureg out
= register_output(p
, output
);
636 emit_op1(p
, OPCODE_MOV
, out
, 0, register_input(p
, input
));
639 static struct ureg
get_eye_position( struct tnl_program
*p
)
641 if (is_undef(p
->eye_position
)) {
642 struct ureg pos
= register_input( p
, VERT_ATTRIB_POS
);
643 struct ureg modelview
[4];
645 p
->eye_position
= reserve_temp(p
);
648 register_matrix_param5( p
, STATE_MODELVIEW_MATRIX
, 0, 0, 3,
651 emit_matrix_transform_vec4(p
, p
->eye_position
, modelview
, pos
);
654 register_matrix_param5( p
, STATE_MODELVIEW_MATRIX
, 0, 0, 3,
655 STATE_MATRIX_TRANSPOSE
, modelview
);
657 emit_transpose_matrix_transform_vec4(p
, p
->eye_position
, modelview
, pos
);
661 return p
->eye_position
;
665 static struct ureg
get_eye_position_normalized( struct tnl_program
*p
)
667 if (is_undef(p
->eye_position_normalized
)) {
668 struct ureg eye
= get_eye_position(p
);
669 p
->eye_position_normalized
= reserve_temp(p
);
670 emit_normalize_vec3(p
, p
->eye_position_normalized
, eye
);
673 return p
->eye_position_normalized
;
677 static struct ureg
get_eye_normal( struct tnl_program
*p
)
679 if (is_undef(p
->eye_normal
)) {
680 struct ureg normal
= register_input(p
, VERT_ATTRIB_NORMAL
);
681 struct ureg mvinv
[3];
683 register_matrix_param5( p
, STATE_MODELVIEW_MATRIX
, 0, 0, 2,
684 STATE_MATRIX_INVTRANS
, mvinv
);
686 p
->eye_normal
= reserve_temp(p
);
688 /* Transform to eye space:
690 emit_matrix_transform_vec3( p
, p
->eye_normal
, mvinv
, normal
);
692 /* Normalize/Rescale:
694 if (p
->state
->normalize
) {
695 emit_normalize_vec3( p
, p
->eye_normal
, p
->eye_normal
);
697 else if (p
->state
->rescale_normals
) {
698 struct ureg rescale
= register_param2(p
, STATE_INTERNAL
,
701 emit_op2( p
, OPCODE_MUL
, p
->eye_normal
, 0, p
->eye_normal
,
702 swizzle1(rescale
, X
));
706 return p
->eye_normal
;
711 static void build_hpos( struct tnl_program
*p
)
713 struct ureg pos
= register_input( p
, VERT_ATTRIB_POS
);
714 struct ureg hpos
= register_output( p
, VERT_RESULT_HPOS
);
718 register_matrix_param5( p
, STATE_MVP_MATRIX
, 0, 0, 3,
720 emit_matrix_transform_vec4( p
, hpos
, mvp
, pos
);
723 register_matrix_param5( p
, STATE_MVP_MATRIX
, 0, 0, 3,
724 STATE_MATRIX_TRANSPOSE
, mvp
);
725 emit_transpose_matrix_transform_vec4( p
, hpos
, mvp
, pos
);
730 static GLuint
material_attrib( GLuint side
, GLuint property
)
732 return ((property
- STATE_AMBIENT
) * 2 +
736 /* Get a bitmask of which material values vary on a per-vertex basis.
738 static void set_material_flags( struct tnl_program
*p
)
740 p
->color_materials
= 0;
743 if (p
->state
->light_color_material
) {
745 p
->color_materials
= p
->state
->light_color_material_mask
;
748 p
->materials
|= p
->state
->light_material_mask
;
752 static struct ureg
get_material( struct tnl_program
*p
, GLuint side
,
755 GLuint attrib
= material_attrib(side
, property
);
757 if (p
->color_materials
& (1<<attrib
))
758 return register_input(p
, VERT_ATTRIB_COLOR0
);
759 else if (p
->materials
& (1<<attrib
))
760 return register_input( p
, attrib
+ _TNL_ATTRIB_MAT_FRONT_AMBIENT
);
762 return register_param3( p
, STATE_MATERIAL
, side
, property
);
765 #define SCENE_COLOR_BITS(side) (( MAT_BIT_FRONT_EMISSION | \
766 MAT_BIT_FRONT_AMBIENT | \
767 MAT_BIT_FRONT_DIFFUSE) << (side))
769 /* Either return a precalculated constant value or emit code to
770 * calculate these values dynamically in the case where material calls
771 * are present between begin/end pairs.
773 * Probably want to shift this to the program compilation phase - if
774 * we always emitted the calculation here, a smart compiler could
775 * detect that it was constant (given a certain set of inputs), and
776 * lift it out of the main loop. That way the programs created here
777 * would be independent of the vertex_buffer details.
779 static struct ureg
get_scenecolor( struct tnl_program
*p
, GLuint side
)
781 if (p
->materials
& SCENE_COLOR_BITS(side
)) {
782 struct ureg lm_ambient
= register_param1(p
, STATE_LIGHTMODEL_AMBIENT
);
783 struct ureg material_emission
= get_material(p
, side
, STATE_EMISSION
);
784 struct ureg material_ambient
= get_material(p
, side
, STATE_AMBIENT
);
785 struct ureg material_diffuse
= get_material(p
, side
, STATE_DIFFUSE
);
786 struct ureg tmp
= make_temp(p
, material_diffuse
);
787 emit_op3(p
, OPCODE_MAD
, tmp
, WRITEMASK_XYZ
, lm_ambient
,
788 material_ambient
, material_emission
);
792 return register_param2( p
, STATE_LIGHTMODEL_SCENECOLOR
, side
);
796 static struct ureg
get_lightprod( struct tnl_program
*p
, GLuint light
,
797 GLuint side
, GLuint property
)
799 GLuint attrib
= material_attrib(side
, property
);
800 if (p
->materials
& (1<<attrib
)) {
801 struct ureg light_value
=
802 register_param3(p
, STATE_LIGHT
, light
, property
);
803 struct ureg material_value
= get_material(p
, side
, property
);
804 struct ureg tmp
= get_temp(p
);
805 emit_op2(p
, OPCODE_MUL
, tmp
, 0, light_value
, material_value
);
809 return register_param4(p
, STATE_LIGHTPROD
, light
, side
, property
);
812 static struct ureg
calculate_light_attenuation( struct tnl_program
*p
,
817 struct ureg attenuation
= register_param3(p
, STATE_LIGHT
, i
,
819 struct ureg att
= get_temp(p
);
821 /* Calculate spot attenuation:
823 if (!p
->state
->unit
[i
].light_spotcutoff_is_180
) {
824 struct ureg spot_dir_norm
= register_param3(p
, STATE_INTERNAL
,
825 STATE_SPOT_DIR_NORMALIZED
, i
);
826 struct ureg spot
= get_temp(p
);
827 struct ureg slt
= get_temp(p
);
829 emit_op2(p
, OPCODE_DP3
, spot
, 0, negate(VPpli
), spot_dir_norm
);
830 emit_op2(p
, OPCODE_SLT
, slt
, 0, swizzle1(spot_dir_norm
,W
), spot
);
831 emit_op2(p
, OPCODE_POW
, spot
, 0, spot
, swizzle1(attenuation
, W
));
832 emit_op2(p
, OPCODE_MUL
, att
, 0, slt
, spot
);
834 release_temp(p
, spot
);
835 release_temp(p
, slt
);
838 /* Calculate distance attenuation:
840 if (p
->state
->unit
[i
].light_attenuated
) {
843 emit_op1(p
, OPCODE_RCP
, dist
, WRITEMASK_YZ
, dist
);
845 emit_op2(p
, OPCODE_MUL
, dist
, WRITEMASK_XZ
, dist
, swizzle1(dist
,Y
));
847 emit_op2(p
, OPCODE_DP3
, dist
, 0, attenuation
, dist
);
849 if (!p
->state
->unit
[i
].light_spotcutoff_is_180
) {
851 emit_op1(p
, OPCODE_RCP
, dist
, 0, dist
);
852 /* spot-atten * dist-atten */
853 emit_op2(p
, OPCODE_MUL
, att
, 0, dist
, att
);
856 emit_op1(p
, OPCODE_RCP
, att
, 0, dist
);
867 /* Need to add some addtional parameters to allow lighting in object
868 * space - STATE_SPOT_DIRECTION and STATE_HALF_VECTOR implicitly assume eye
871 static void build_lighting( struct tnl_program
*p
)
873 const GLboolean twoside
= p
->state
->light_twoside
;
874 const GLboolean separate
= p
->state
->separate_specular
;
875 GLuint nr_lights
= 0, count
= 0;
876 struct ureg normal
= get_eye_normal(p
);
877 struct ureg lit
= get_temp(p
);
878 struct ureg dots
= get_temp(p
);
879 struct ureg _col0
= undef
, _col1
= undef
;
880 struct ureg _bfc0
= undef
, _bfc1
= undef
;
883 for (i
= 0; i
< MAX_LIGHTS
; i
++)
884 if (p
->state
->unit
[i
].light_enabled
)
887 set_material_flags(p
);
890 struct ureg shininess
= get_material(p
, 0, STATE_SHININESS
);
891 emit_op1(p
, OPCODE_MOV
, dots
, WRITEMASK_W
, swizzle1(shininess
,X
));
892 release_temp(p
, shininess
);
894 _col0
= make_temp(p
, get_scenecolor(p
, 0));
896 _col1
= make_temp(p
, get_identity_param(p
));
903 struct ureg shininess
= get_material(p
, 1, STATE_SHININESS
);
904 emit_op1(p
, OPCODE_MOV
, dots
, WRITEMASK_Z
,
905 negate(swizzle1(shininess
,X
)));
906 release_temp(p
, shininess
);
908 _bfc0
= make_temp(p
, get_scenecolor(p
, 1));
910 _bfc1
= make_temp(p
, get_identity_param(p
));
916 /* If no lights, still need to emit the scenecolor.
919 struct ureg res0
= register_output( p
, VERT_RESULT_COL0
);
920 emit_op1(p
, OPCODE_MOV
, res0
, 0, _col0
);
924 struct ureg res1
= register_output( p
, VERT_RESULT_COL1
);
925 emit_op1(p
, OPCODE_MOV
, res1
, 0, _col1
);
929 struct ureg res0
= register_output( p
, VERT_RESULT_BFC0
);
930 emit_op1(p
, OPCODE_MOV
, res0
, 0, _bfc0
);
933 if (twoside
&& separate
) {
934 struct ureg res1
= register_output( p
, VERT_RESULT_BFC1
);
935 emit_op1(p
, OPCODE_MOV
, res1
, 0, _bfc1
);
938 if (nr_lights
== 0) {
944 for (i
= 0; i
< MAX_LIGHTS
; i
++) {
945 if (p
->state
->unit
[i
].light_enabled
) {
946 struct ureg half
= undef
;
947 struct ureg att
= undef
, VPpli
= undef
;
951 if (p
->state
->unit
[i
].light_eyepos3_is_zero
) {
952 /* Can used precomputed constants in this case.
953 * Attenuation never applies to infinite lights.
955 VPpli
= register_param3(p
, STATE_LIGHT
, i
,
956 STATE_POSITION_NORMALIZED
);
957 if (p
->state
->light_local_viewer
) {
958 struct ureg eye_hat
= get_eye_position_normalized(p
);
960 emit_op2(p
, OPCODE_SUB
, half
, 0, VPpli
, eye_hat
);
961 emit_normalize_vec3(p
, half
, half
);
963 half
= register_param3(p
, STATE_LIGHT
, i
, STATE_HALF_VECTOR
);
967 struct ureg Ppli
= register_param3(p
, STATE_LIGHT
, i
,
969 struct ureg V
= get_eye_position(p
);
970 struct ureg dist
= get_temp(p
);
975 /* Calulate VPpli vector
977 emit_op2(p
, OPCODE_SUB
, VPpli
, 0, Ppli
, V
);
979 /* Normalize VPpli. The dist value also used in
982 emit_op2(p
, OPCODE_DP3
, dist
, 0, VPpli
, VPpli
);
983 emit_op1(p
, OPCODE_RSQ
, dist
, 0, dist
);
984 emit_op2(p
, OPCODE_MUL
, VPpli
, 0, VPpli
, dist
);
987 /* Calculate attenuation:
989 if (!p
->state
->unit
[i
].light_spotcutoff_is_180
||
990 p
->state
->unit
[i
].light_attenuated
) {
991 att
= calculate_light_attenuation(p
, i
, VPpli
, dist
);
995 /* Calculate viewer direction, or use infinite viewer:
997 if (p
->state
->light_local_viewer
) {
998 struct ureg eye_hat
= get_eye_position_normalized(p
);
999 emit_op2(p
, OPCODE_SUB
, half
, 0, VPpli
, eye_hat
);
1002 struct ureg z_dir
= swizzle(get_identity_param(p
),X
,Y
,W
,Z
);
1003 emit_op2(p
, OPCODE_ADD
, half
, 0, VPpli
, z_dir
);
1006 emit_normalize_vec3(p
, half
, half
);
1008 release_temp(p
, dist
);
1011 /* Calculate dot products:
1013 emit_op2(p
, OPCODE_DP3
, dots
, WRITEMASK_X
, normal
, VPpli
);
1014 emit_op2(p
, OPCODE_DP3
, dots
, WRITEMASK_Y
, normal
, half
);
1017 /* Front face lighting:
1020 struct ureg ambient
= get_lightprod(p
, i
, 0, STATE_AMBIENT
);
1021 struct ureg diffuse
= get_lightprod(p
, i
, 0, STATE_DIFFUSE
);
1022 struct ureg specular
= get_lightprod(p
, i
, 0, STATE_SPECULAR
);
1023 struct ureg res0
, res1
;
1024 GLuint mask0
, mask1
;
1026 emit_op1(p
, OPCODE_LIT
, lit
, 0, dots
);
1029 emit_op2(p
, OPCODE_MUL
, lit
, 0, lit
, att
);
1032 if (count
== nr_lights
) {
1034 mask0
= WRITEMASK_XYZ
;
1035 mask1
= WRITEMASK_XYZ
;
1036 res0
= register_output( p
, VERT_RESULT_COL0
);
1037 res1
= register_output( p
, VERT_RESULT_COL1
);
1041 mask1
= WRITEMASK_XYZ
;
1043 res1
= register_output( p
, VERT_RESULT_COL0
);
1052 emit_op3(p
, OPCODE_MAD
, _col0
, 0, swizzle1(lit
,X
), ambient
, _col0
);
1053 emit_op3(p
, OPCODE_MAD
, res0
, mask0
, swizzle1(lit
,Y
), diffuse
, _col0
);
1054 emit_op3(p
, OPCODE_MAD
, res1
, mask1
, swizzle1(lit
,Z
), specular
, _col1
);
1056 release_temp(p
, ambient
);
1057 release_temp(p
, diffuse
);
1058 release_temp(p
, specular
);
1061 /* Back face lighting:
1064 struct ureg ambient
= get_lightprod(p
, i
, 1, STATE_AMBIENT
);
1065 struct ureg diffuse
= get_lightprod(p
, i
, 1, STATE_DIFFUSE
);
1066 struct ureg specular
= get_lightprod(p
, i
, 1, STATE_SPECULAR
);
1067 struct ureg res0
, res1
;
1068 GLuint mask0
, mask1
;
1070 emit_op1(p
, OPCODE_LIT
, lit
, 0, negate(swizzle(dots
,X
,Y
,W
,Z
)));
1073 emit_op2(p
, OPCODE_MUL
, lit
, 0, lit
, att
);
1075 if (count
== nr_lights
) {
1077 mask0
= WRITEMASK_XYZ
;
1078 mask1
= WRITEMASK_XYZ
;
1079 res0
= register_output( p
, VERT_RESULT_BFC0
);
1080 res1
= register_output( p
, VERT_RESULT_BFC1
);
1084 mask1
= WRITEMASK_XYZ
;
1086 res1
= register_output( p
, VERT_RESULT_BFC0
);
1095 emit_op3(p
, OPCODE_MAD
, _bfc0
, 0, swizzle1(lit
,X
), ambient
, _bfc0
);
1096 emit_op3(p
, OPCODE_MAD
, res0
, mask0
, swizzle1(lit
,Y
), diffuse
, _bfc0
);
1097 emit_op3(p
, OPCODE_MAD
, res1
, mask1
, swizzle1(lit
,Z
), specular
, _bfc1
);
1099 release_temp(p
, ambient
);
1100 release_temp(p
, diffuse
);
1101 release_temp(p
, specular
);
1104 release_temp(p
, half
);
1105 release_temp(p
, VPpli
);
1106 release_temp(p
, att
);
1114 static void build_fog( struct tnl_program
*p
)
1116 struct ureg fog
= register_output(p
, VERT_RESULT_FOGC
);
1119 if (p
->state
->fog_source_is_depth
) {
1120 input
= swizzle1(get_eye_position(p
), Z
);
1123 input
= swizzle1(register_input(p
, VERT_ATTRIB_FOG
), X
);
1126 if (p
->state
->fog_mode
&& p
->state
->tnl_do_vertex_fog
) {
1127 struct ureg params
= register_param2(p
, STATE_INTERNAL
,
1128 STATE_FOG_PARAMS_OPTIMIZED
);
1129 struct ureg tmp
= get_temp(p
);
1130 GLboolean useabs
= (p
->state
->fog_mode
!= FOG_EXP2
);
1133 emit_op1(p
, OPCODE_ABS
, tmp
, 0, input
);
1136 switch (p
->state
->fog_mode
) {
1138 struct ureg id
= get_identity_param(p
);
1139 emit_op3(p
, OPCODE_MAD
, tmp
, 0, useabs
? tmp
: input
,
1140 swizzle1(params
,X
), swizzle1(params
,Y
));
1141 emit_op2(p
, OPCODE_MAX
, tmp
, 0, tmp
, swizzle1(id
,X
)); /* saturate */
1142 emit_op2(p
, OPCODE_MIN
, fog
, WRITEMASK_X
, tmp
, swizzle1(id
,W
));
1146 emit_op2(p
, OPCODE_MUL
, tmp
, 0, useabs
? tmp
: input
,
1147 swizzle1(params
,Z
));
1148 emit_op1(p
, OPCODE_EX2
, fog
, WRITEMASK_X
, negate(tmp
));
1151 emit_op2(p
, OPCODE_MUL
, tmp
, 0, input
, swizzle1(params
,W
));
1152 emit_op2(p
, OPCODE_MUL
, tmp
, 0, tmp
, tmp
);
1153 emit_op1(p
, OPCODE_EX2
, fog
, WRITEMASK_X
, negate(tmp
));
1157 release_temp(p
, tmp
);
1160 /* results = incoming fog coords (compute fog per-fragment later)
1162 * KW: Is it really necessary to do anything in this case?
1163 * BP: Yes, we always need to compute the absolute value, unless
1164 * we want to push that down into the fragment program...
1166 GLboolean useabs
= GL_TRUE
;
1167 emit_op1(p
, useabs
? OPCODE_ABS
: OPCODE_MOV
, fog
, WRITEMASK_X
, input
);
1171 static void build_reflect_texgen( struct tnl_program
*p
,
1175 struct ureg normal
= get_eye_normal(p
);
1176 struct ureg eye_hat
= get_eye_position_normalized(p
);
1177 struct ureg tmp
= get_temp(p
);
1180 emit_op2(p
, OPCODE_DP3
, tmp
, 0, normal
, eye_hat
);
1182 emit_op2(p
, OPCODE_ADD
, tmp
, 0, tmp
, tmp
);
1184 emit_op3(p
, OPCODE_MAD
, dest
, writemask
, negate(tmp
), normal
, eye_hat
);
1186 release_temp(p
, tmp
);
1189 static void build_sphere_texgen( struct tnl_program
*p
,
1193 struct ureg normal
= get_eye_normal(p
);
1194 struct ureg eye_hat
= get_eye_position_normalized(p
);
1195 struct ureg tmp
= get_temp(p
);
1196 struct ureg half
= register_scalar_const(p
, .5);
1197 struct ureg r
= get_temp(p
);
1198 struct ureg inv_m
= get_temp(p
);
1199 struct ureg id
= get_identity_param(p
);
1201 /* Could share the above calculations, but it would be
1202 * a fairly odd state for someone to set (both sphere and
1203 * reflection active for different texture coordinate
1204 * components. Of course - if two texture units enable
1205 * reflect and/or sphere, things start to tilt in favour
1206 * of seperating this out:
1210 emit_op2(p
, OPCODE_DP3
, tmp
, 0, normal
, eye_hat
);
1212 emit_op2(p
, OPCODE_ADD
, tmp
, 0, tmp
, tmp
);
1214 emit_op3(p
, OPCODE_MAD
, r
, 0, negate(tmp
), normal
, eye_hat
);
1216 emit_op2(p
, OPCODE_ADD
, tmp
, 0, r
, swizzle(id
,X
,Y
,W
,Z
));
1217 /* rx^2 + ry^2 + (rz+1)^2 */
1218 emit_op2(p
, OPCODE_DP3
, tmp
, 0, tmp
, tmp
);
1220 emit_op1(p
, OPCODE_RSQ
, tmp
, 0, tmp
);
1222 emit_op2(p
, OPCODE_MUL
, inv_m
, 0, tmp
, half
);
1224 emit_op3(p
, OPCODE_MAD
, dest
, writemask
, r
, inv_m
, half
);
1226 release_temp(p
, tmp
);
1228 release_temp(p
, inv_m
);
1232 static void build_texture_transform( struct tnl_program
*p
)
1236 for (i
= 0; i
< MAX_TEXTURE_UNITS
; i
++) {
1238 if (!(p
->state
->fragprog_inputs_read
& FRAG_BIT_TEX(i
)))
1241 if (p
->state
->unit
[i
].texgen_enabled
||
1242 p
->state
->unit
[i
].texmat_enabled
) {
1244 GLuint texmat_enabled
= p
->state
->unit
[i
].texmat_enabled
;
1245 struct ureg out
= register_output(p
, VERT_RESULT_TEX0
+ i
);
1246 struct ureg out_texgen
= undef
;
1248 if (p
->state
->unit
[i
].texgen_enabled
) {
1249 GLuint copy_mask
= 0;
1250 GLuint sphere_mask
= 0;
1251 GLuint reflect_mask
= 0;
1252 GLuint normal_mask
= 0;
1256 out_texgen
= get_temp(p
);
1260 modes
[0] = p
->state
->unit
[i
].texgen_mode0
;
1261 modes
[1] = p
->state
->unit
[i
].texgen_mode1
;
1262 modes
[2] = p
->state
->unit
[i
].texgen_mode2
;
1263 modes
[3] = p
->state
->unit
[i
].texgen_mode3
;
1265 for (j
= 0; j
< 4; j
++) {
1267 case TXG_OBJ_LINEAR
: {
1268 struct ureg obj
= register_input(p
, VERT_ATTRIB_POS
);
1270 register_param3(p
, STATE_TEXGEN
, i
,
1271 STATE_TEXGEN_OBJECT_S
+ j
);
1273 emit_op2(p
, OPCODE_DP4
, out_texgen
, WRITEMASK_X
<< j
,
1277 case TXG_EYE_LINEAR
: {
1278 struct ureg eye
= get_eye_position(p
);
1280 register_param3(p
, STATE_TEXGEN
, i
,
1281 STATE_TEXGEN_EYE_S
+ j
);
1283 emit_op2(p
, OPCODE_DP4
, out_texgen
, WRITEMASK_X
<< j
,
1287 case TXG_SPHERE_MAP
:
1288 sphere_mask
|= WRITEMASK_X
<< j
;
1290 case TXG_REFLECTION_MAP
:
1291 reflect_mask
|= WRITEMASK_X
<< j
;
1293 case TXG_NORMAL_MAP
:
1294 normal_mask
|= WRITEMASK_X
<< j
;
1297 copy_mask
|= WRITEMASK_X
<< j
;
1304 build_sphere_texgen(p
, out_texgen
, sphere_mask
);
1308 build_reflect_texgen(p
, out_texgen
, reflect_mask
);
1312 struct ureg normal
= get_eye_normal(p
);
1313 emit_op1(p
, OPCODE_MOV
, out_texgen
, normal_mask
, normal
);
1317 struct ureg in
= register_input(p
, VERT_ATTRIB_TEX0
+i
);
1318 emit_op1(p
, OPCODE_MOV
, out_texgen
, copy_mask
, in
);
1322 if (texmat_enabled
) {
1323 struct ureg texmat
[4];
1324 struct ureg in
= (!is_undef(out_texgen
) ?
1326 register_input(p
, VERT_ATTRIB_TEX0
+i
));
1328 register_matrix_param5( p
, STATE_TEXTURE_MATRIX
, i
, 0, 3,
1330 emit_matrix_transform_vec4( p
, out
, texmat
, in
);
1333 register_matrix_param5( p
, STATE_TEXTURE_MATRIX
, i
, 0, 3,
1334 STATE_MATRIX_TRANSPOSE
, texmat
);
1335 emit_transpose_matrix_transform_vec4( p
, out
, texmat
, in
);
1342 emit_passthrough(p
, VERT_ATTRIB_TEX0
+i
, VERT_RESULT_TEX0
+i
);
1348 static void build_pointsize( struct tnl_program
*p
)
1350 struct ureg eye
= get_eye_position(p
);
1351 struct ureg state_size
= register_param1(p
, STATE_POINT_SIZE
);
1352 struct ureg state_attenuation
= register_param1(p
, STATE_POINT_ATTENUATION
);
1353 struct ureg out
= register_output(p
, VERT_RESULT_PSIZ
);
1354 struct ureg ut
= get_temp(p
);
1357 emit_op1(p
, OPCODE_ABS
, ut
, WRITEMASK_Y
, swizzle1(eye
, Z
));
1358 /* p1 + dist * (p2 + dist * p3); */
1359 emit_op3(p
, OPCODE_MAD
, ut
, WRITEMASK_X
, swizzle1(ut
, Y
),
1360 swizzle1(state_attenuation
, Z
), swizzle1(state_attenuation
, Y
));
1361 emit_op3(p
, OPCODE_MAD
, ut
, WRITEMASK_X
, swizzle1(ut
, Y
),
1362 ut
, swizzle1(state_attenuation
, X
));
1364 /* 1 / sqrt(factor) */
1365 emit_op1(p
, OPCODE_RSQ
, ut
, WRITEMASK_X
, ut
);
1368 /* out = pointSize / sqrt(factor) */
1369 emit_op2(p
, OPCODE_MUL
, out
, WRITEMASK_X
, ut
, state_size
);
1371 /* not sure, might make sense to do clamping here,
1372 but it's not done in t_vb_points neither */
1373 emit_op2(p
, OPCODE_MUL
, ut
, WRITEMASK_X
, ut
, state_size
);
1374 emit_op2(p
, OPCODE_MAX
, ut
, WRITEMASK_X
, ut
, swizzle1(state_size
, Y
));
1375 emit_op2(p
, OPCODE_MIN
, out
, WRITEMASK_X
, ut
, swizzle1(state_size
, Z
));
1378 release_temp(p
, ut
);
1382 * Emit constant point size.
1384 static void constant_pointsize( struct tnl_program
*p
)
1386 struct ureg state_size
= register_param1(p
, STATE_POINT_SIZE
);
1387 struct ureg out
= register_output(p
, VERT_RESULT_PSIZ
);
1388 emit_op1(p
, OPCODE_MOV
, out
, WRITEMASK_X
, state_size
);
1391 static void build_tnl_program( struct tnl_program
*p
)
1392 { /* Emit the program, starting with modelviewproject:
1396 /* Lighting calculations:
1398 if (p
->state
->fragprog_inputs_read
& (FRAG_BIT_COL0
|FRAG_BIT_COL1
)) {
1399 if (p
->state
->light_global_enabled
)
1402 if (p
->state
->fragprog_inputs_read
& FRAG_BIT_COL0
)
1403 emit_passthrough(p
, VERT_ATTRIB_COLOR0
, VERT_RESULT_COL0
);
1405 if (p
->state
->fragprog_inputs_read
& FRAG_BIT_COL1
)
1406 emit_passthrough(p
, VERT_ATTRIB_COLOR1
, VERT_RESULT_COL1
);
1410 if ((p
->state
->fragprog_inputs_read
& FRAG_BIT_FOGC
) ||
1411 p
->state
->fog_mode
!= FOG_NONE
)
1414 if (p
->state
->fragprog_inputs_read
& FRAG_BITS_TEX_ANY
)
1415 build_texture_transform(p
);
1417 if (p
->state
->point_attenuated
)
1421 constant_pointsize(p
);
1426 emit_op1(p
, OPCODE_END
, undef
, 0, undef
);
1431 _mesa_printf ("\n");
1437 create_new_program( const struct state_key
*key
,
1438 struct gl_vertex_program
*program
,
1441 struct tnl_program p
;
1443 _mesa_memset(&p
, 0, sizeof(p
));
1445 p
.program
= program
;
1446 p
.eye_position
= undef
;
1447 p
.eye_position_normalized
= undef
;
1448 p
.eye_normal
= undef
;
1452 if (max_temps
>= sizeof(int) * 8)
1453 p
.temp_reserved
= 0;
1455 p
.temp_reserved
= ~((1<<max_temps
)-1);
1457 p
.program
->Base
.Instructions
= _mesa_alloc_instructions(MAX_INSN
);
1458 p
.program
->Base
.String
= NULL
;
1459 p
.program
->Base
.NumInstructions
=
1460 p
.program
->Base
.NumTemporaries
=
1461 p
.program
->Base
.NumParameters
=
1462 p
.program
->Base
.NumAttributes
= p
.program
->Base
.NumAddressRegs
= 0;
1463 p
.program
->Base
.Parameters
= _mesa_new_parameter_list();
1464 p
.program
->Base
.InputsRead
= 0;
1465 p
.program
->Base
.OutputsWritten
= 0;
1467 build_tnl_program( &p
);
1470 static void *search_cache( struct tnl_cache
*cache
,
1475 struct tnl_cache_item
*c
;
1477 for (c
= cache
->items
[hash
% cache
->size
]; c
; c
= c
->next
) {
1478 if (c
->hash
== hash
&& _mesa_memcmp(c
->key
, key
, keysize
) == 0)
1485 static void rehash( struct tnl_cache
*cache
)
1487 struct tnl_cache_item
**items
;
1488 struct tnl_cache_item
*c
, *next
;
1491 size
= cache
->size
* 3;
1492 items
= (struct tnl_cache_item
**) _mesa_malloc(size
* sizeof(*items
));
1493 _mesa_memset(items
, 0, size
* sizeof(*items
));
1495 for (i
= 0; i
< cache
->size
; i
++)
1496 for (c
= cache
->items
[i
]; c
; c
= next
) {
1498 c
->next
= items
[c
->hash
% size
];
1499 items
[c
->hash
% size
] = c
;
1503 cache
->items
= items
;
1507 static void cache_item( struct tnl_cache
*cache
,
1512 struct tnl_cache_item
*c
= (struct tnl_cache_item
*) _mesa_malloc(sizeof(*c
));
1517 if (++cache
->n_items
> cache
->size
* 1.5)
1520 c
->next
= cache
->items
[hash
% cache
->size
];
1521 cache
->items
[hash
% cache
->size
] = c
;
1524 static GLuint
hash_key( struct state_key
*key
)
1526 GLuint
*ikey
= (GLuint
*)key
;
1529 /* I'm sure this can be improved on, but speed is important:
1531 for (i
= 0; i
< sizeof(*key
)/sizeof(GLuint
); i
++)
1537 void _tnl_UpdateFixedFunctionProgram( GLcontext
*ctx
)
1539 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
1540 struct state_key
*key
;
1542 const struct gl_vertex_program
*prev
= ctx
->VertexProgram
._Current
;
1544 if (!ctx
->VertexProgram
._Current
||
1545 ctx
->VertexProgram
._Current
== ctx
->VertexProgram
._TnlProgram
) {
1546 /* Grab all the relevent state and put it in a single structure:
1548 key
= make_state_key(ctx
);
1549 hash
= hash_key(key
);
1551 /* Look for an already-prepared program for this state:
1553 ctx
->VertexProgram
._TnlProgram
= (struct gl_vertex_program
*)
1554 search_cache( tnl
->vp_cache
, hash
, key
, sizeof(*key
) );
1556 /* OK, we'll have to build a new one:
1558 if (!ctx
->VertexProgram
._TnlProgram
) {
1560 _mesa_printf("Build new TNL program\n");
1562 ctx
->VertexProgram
._TnlProgram
= (struct gl_vertex_program
*)
1563 ctx
->Driver
.NewProgram(ctx
, GL_VERTEX_PROGRAM_ARB
, 0);
1565 create_new_program( key
, ctx
->VertexProgram
._TnlProgram
,
1566 ctx
->Const
.VertexProgram
.MaxTemps
);
1568 if (ctx
->Driver
.ProgramStringNotify
)
1569 ctx
->Driver
.ProgramStringNotify( ctx
, GL_VERTEX_PROGRAM_ARB
,
1570 &ctx
->VertexProgram
._TnlProgram
->Base
);
1572 cache_item(tnl
->vp_cache
, hash
, key
, ctx
->VertexProgram
._TnlProgram
);
1577 _mesa_printf("Found existing TNL program for key %x\n", hash
);
1579 ctx
->VertexProgram
._Current
= ctx
->VertexProgram
._TnlProgram
;
1582 /* Tell the driver about the change. Could define a new target for
1585 if (ctx
->VertexProgram
._Current
!= prev
&& ctx
->Driver
.BindProgram
) {
1586 ctx
->Driver
.BindProgram(ctx
, GL_VERTEX_PROGRAM_ARB
,
1587 (struct gl_program
*) ctx
->VertexProgram
._Current
);
1591 void _tnl_ProgramCacheInit( GLcontext
*ctx
)
1593 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
1595 tnl
->vp_cache
= (struct tnl_cache
*) MALLOC(sizeof(*tnl
->vp_cache
));
1596 tnl
->vp_cache
->size
= 17;
1597 tnl
->vp_cache
->n_items
= 0;
1598 tnl
->vp_cache
->items
= (struct tnl_cache_item
**)
1599 _mesa_calloc(tnl
->vp_cache
->size
* sizeof(*tnl
->vp_cache
->items
));
1602 void _tnl_ProgramCacheDestroy( GLcontext
*ctx
)
1604 TNLcontext
*tnl
= TNL_CONTEXT(ctx
);
1605 struct tnl_cache_item
*c
, *next
;
1608 for (i
= 0; i
< tnl
->vp_cache
->size
; i
++)
1609 for (c
= tnl
->vp_cache
->items
[i
]; c
; c
= next
) {
1616 FREE(tnl
->vp_cache
->items
);
1617 FREE(tnl
->vp_cache
);