/
mojoshader_opengl.c
2448 lines (2055 loc) · 80.7 KB
1
2
3
4
5
6
7
8
9
/**
* MojoShader; generate shader programs from bytecode of compiled
* Direct3D shaders.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
10
11
12
// !!! FIXME: preshaders shouldn't be handled in here at all. This should
// !!! FIXME: be in the Effects API, once that's actually written.
13
14
15
16
17
18
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <assert.h>
19
// !!! FIXME: most of these _MSC_VER should probably be _WINDOWS?
20
21
22
23
24
#ifdef _MSC_VER
#define WIN32_LEAN_AND_MEAN 1
#include <windows.h> // GL headers need this for WINGDIAPI definition.
#endif
25
26
27
28
29
30
31
32
#if (defined(__APPLE__) && defined(__MACH__))
#define PLATFORM_MACOSX 1
#endif
#if PLATFORM_MACOSX
#include <Carbon/Carbon.h>
#endif
33
34
35
#define __MOJOSHADER_INTERNAL__ 1
#include "mojoshader_internal.h"
36
#define GL_GLEXT_LEGACY 1
37
38
#include "GL/gl.h"
#include "GL/glext.h"
39
40
41
42
43
44
45
#ifndef GL_HALF_FLOAT_NV
#define GL_HALF_FLOAT_NV 0x140B
#endif
#ifndef GL_HALF_FLOAT_ARB
#define GL_HALF_FLOAT_ARB 0x140B
46
47
48
49
50
51
#endif
#ifndef GL_HALF_FLOAT_OES
#define GL_HALF_FLOAT_OES 0x8D61
#endif
52
53
54
55
// this happens to be the same value for ARB1 and GLSL.
#ifndef GL_PROGRAM_POINT_SIZE
#define GL_PROGRAM_POINT_SIZE 0x8642
#endif
56
57
58
59
struct MOJOSHADER_glShader
{
const MOJOSHADER_parseData *parseData;
60
GLuint handle;
61
62
63
uint32 refcount;
};
64
65
typedef struct
{
66
MOJOSHADER_shaderType shader_type;
67
const MOJOSHADER_uniform *uniform;
68
GLint location;
69
70
} UniformMap;
71
72
typedef struct
{
73
const MOJOSHADER_attribute *attribute;
74
GLint location;
75
76
} AttributeMap;
77
78
struct MOJOSHADER_glProgram
{
79
80
MOJOSHADER_glShader *vertex;
MOJOSHADER_glShader *fragment;
81
GLuint handle;
82
uint32 generation;
83
uint32 uniform_count;
84
UniformMap *uniforms;
85
uint32 attribute_count;
86
AttributeMap *attributes;
87
88
89
90
91
92
93
94
95
96
97
98
size_t vs_uniforms_float4_count;
GLfloat *vs_uniforms_float4;
size_t vs_uniforms_int4_count;
GLint *vs_uniforms_int4;
size_t vs_uniforms_bool_count;
GLint *vs_uniforms_bool;
size_t ps_uniforms_float4_count;
GLfloat *ps_uniforms_float4;
size_t ps_uniforms_int4_count;
GLint *ps_uniforms_int4;
size_t ps_uniforms_bool_count;
GLint *ps_uniforms_bool;
99
100
101
102
103
104
size_t vs_preshader_reg_count;
GLfloat *vs_preshader_regs;
size_t ps_preshader_reg_count;
GLfloat *ps_preshader_regs;
105
uint32 refcount;
106
107
108
int uses_pointsize;
109
// GLSL uses these...location of uniform arrays.
110
111
112
113
114
115
GLint vs_float4_loc;
GLint vs_int4_loc;
GLint vs_bool_loc;
GLint ps_float4_loc;
GLint ps_int4_loc;
GLint ps_bool_loc;
116
117
};
118
119
120
121
#ifndef WINGDIAPI
#define WINGDIAPI
#endif
122
// Entry points in base OpenGL that lack function pointer prototypes...
123
124
typedef WINGDIAPI void (APIENTRYP PFNGLGETINTEGERVPROC) (GLenum pname, GLint *params);
typedef WINGDIAPI const GLubyte * (APIENTRYP PFNGLGETSTRINGPROC) (GLenum name);
125
typedef WINGDIAPI GLenum (APIENTRYP PFNGLGETERRORPROC) (void);
126
127
typedef WINGDIAPI void (APIENTRYP PFNGLENABLEPROC) (GLenum cap);
typedef WINGDIAPI void (APIENTRYP PFNGLDISABLEPROC) (GLenum cap);
128
129
130
131
132
133
// Max entries for each register file type...
#define MAX_REG_FILE_F 8192
#define MAX_REG_FILE_I 2047
#define MAX_REG_FILE_B 2047
134
135
136
137
138
139
140
141
struct MOJOSHADER_glContext
{
// Allocators...
MOJOSHADER_malloc malloc_fn;
MOJOSHADER_free free_fn;
void *malloc_data;
// The constant register files...
142
143
// !!! FIXME: Man, it kills me how much memory this takes...
// !!! FIXME: ... make this dynamically allocated on demand.
144
145
146
147
148
149
GLfloat vs_reg_file_f[MAX_REG_FILE_F * 4];
GLint vs_reg_file_i[MAX_REG_FILE_I * 4];
uint8 vs_reg_file_b[MAX_REG_FILE_B];
GLfloat ps_reg_file_f[MAX_REG_FILE_F * 4];
GLint ps_reg_file_i[MAX_REG_FILE_I * 4];
uint8 ps_reg_file_b[MAX_REG_FILE_B];
150
GLuint sampler_reg_file[16];
151
152
153
154
// This increments every time we change the register files.
uint32 generation;
155
156
157
// This keeps track of implicitly linked programs.
HashTable *linker_cache;
158
// This tells us which vertex attribute arrays we have enabled.
159
GLint max_attrs;
160
161
162
uint8 want_attr[32];
uint8 have_attr[32];
163
164
165
// rarely used, so we don't touch when we don't have to.
int pointsize_enabled;
166
167
168
// GL stuff...
int opengl_major;
int opengl_minor;
169
170
int glsl_major;
int glsl_minor;
171
MOJOSHADER_glProgram *bound_program;
172
char profile[16];
173
174
// Extensions...
175
176
int have_core_opengl;
int have_opengl_2; // different entry points than ARB extensions.
177
178
179
180
181
182
183
184
185
186
187
188
189
int have_GL_ARB_vertex_program;
int have_GL_ARB_fragment_program;
int have_GL_NV_vertex_program2_option;
int have_GL_NV_fragment_program2;
int have_GL_NV_vertex_program3;
int have_GL_NV_gpu_program4;
int have_GL_ARB_shader_objects;
int have_GL_ARB_vertex_shader;
int have_GL_ARB_fragment_shader;
int have_GL_ARB_shading_language_100;
int have_GL_NV_half_float;
int have_GL_ARB_half_float_vertex;
int have_GL_OES_vertex_half_float;
190
191
192
// Entry points...
PFNGLGETSTRINGPROC glGetString;
193
PFNGLGETERRORPROC glGetError;
194
PFNGLGETINTEGERVPROC glGetIntegerv;
195
196
PFNGLENABLEPROC glEnable;
PFNGLDISABLEPROC glDisable;
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
PFNGLDELETESHADERPROC glDeleteShader;
PFNGLDELETEPROGRAMPROC glDeleteProgram;
PFNGLATTACHSHADERPROC glAttachShader;
PFNGLCOMPILESHADERPROC glCompileShader;
PFNGLCREATESHADERPROC glCreateShader;
PFNGLCREATEPROGRAMPROC glCreateProgram;
PFNGLDISABLEVERTEXATTRIBARRAYPROC glDisableVertexAttribArray;
PFNGLENABLEVERTEXATTRIBARRAYPROC glEnableVertexAttribArray;
PFNGLGETATTRIBLOCATIONPROC glGetAttribLocation;
PFNGLGETPROGRAMINFOLOGPROC glGetProgramInfoLog;
PFNGLGETSHADERIVPROC glGetShaderiv;
PFNGLGETPROGRAMIVPROC glGetProgramiv;
PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
PFNGLLINKPROGRAMPROC glLinkProgram;
PFNGLSHADERSOURCEPROC glShaderSource;
PFNGLUNIFORM1IPROC glUniform1i;
PFNGLUNIFORM1IVPROC glUniform1iv;
PFNGLUNIFORM4FVPROC glUniform4fv;
PFNGLUNIFORM4IVPROC glUniform4iv;
PFNGLUSEPROGRAMPROC glUseProgram;
PFNGLVERTEXATTRIBPOINTERPROC glVertexAttribPointer;
PFNGLDELETEOBJECTARBPROC glDeleteObjectARB;
PFNGLATTACHOBJECTARBPROC glAttachObjectARB;
PFNGLCOMPILESHADERARBPROC glCompileShaderARB;
PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB;
PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB;
PFNGLDISABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
PFNGLGETATTRIBLOCATIONARBPROC glGetAttribLocationARB;
PFNGLGETINFOLOGARBPROC glGetInfoLogARB;
PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB;
PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB;
PFNGLLINKPROGRAMARBPROC glLinkProgramARB;
PFNGLSHADERSOURCEARBPROC glShaderSourceARB;
PFNGLUNIFORM1IARBPROC glUniform1iARB;
PFNGLUNIFORM1IVARBPROC glUniform1ivARB;
PFNGLUNIFORM4FVARBPROC glUniform4fvARB;
PFNGLUNIFORM4IVARBPROC glUniform4ivARB;
PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB;
PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
237
PFNGLGETPROGRAMIVARBPROC glGetProgramivARB;
238
PFNGLPROGRAMLOCALPARAMETER4FVARBPROC glProgramLocalParameter4fvARB;
239
PFNGLPROGRAMLOCALPARAMETERI4IVNVPROC glProgramLocalParameterI4ivNV;
240
241
242
243
PFNGLDELETEPROGRAMSARBPROC glDeleteProgramsARB;
PFNGLGENPROGRAMSARBPROC glGenProgramsARB;
PFNGLBINDPROGRAMARBPROC glBindProgramARB;
PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
244
245
246
// interface for profile-specific things.
int (*profileMaxUniforms)(MOJOSHADER_shaderType shader_type);
247
int (*profileCompileShader)(const MOJOSHADER_parseData *pd, GLuint *s);
248
249
void (*profileDeleteShader)(const GLuint shader);
void (*profileDeleteProgram)(const GLuint program);
250
GLint (*profileGetAttribLocation)(MOJOSHADER_glProgram *program, int idx);
251
GLint (*profileGetUniformLocation)(MOJOSHADER_glProgram *program, MOJOSHADER_glShader *shader, int idx);
252
GLint (*profileGetSamplerLocation)(MOJOSHADER_glProgram *, MOJOSHADER_glShader *, int);
253
GLuint (*profileLinkProgram)(MOJOSHADER_glShader *, MOJOSHADER_glShader *);
254
void (*profileFinalInitProgram)(MOJOSHADER_glProgram *program);
255
void (*profileUseProgram)(MOJOSHADER_glProgram *program);
256
257
258
void (*profilePushConstantArray)(MOJOSHADER_glProgram *, const MOJOSHADER_uniform *, const GLfloat *);
void (*profilePushUniforms)(void);
void (*profilePushSampler)(GLint loc, GLuint sampler);
259
260
int (*profileMustPushConstantArrays)(void);
int (*profileMustPushSamplers)(void);
261
262
};
263
264
static MOJOSHADER_glContext *ctx = NULL;
265
266
267
268
269
270
271
272
273
// Error state...
static char error_buffer[1024] = { '\0' };
static void set_error(const char *str)
{
snprintf(error_buffer, sizeof (error_buffer), "%s", str);
} // set_error
274
275
276
277
278
279
280
281
#if PLATFORM_MACOSX
static inline int macosx_version_atleast(int x, int y, int z)
{
static int checked = 0;
static int combined = 0;
if (!checked)
{
282
SInt32 ver, major, minor, patch;
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
int convert = 0;
if (Gestalt(gestaltSystemVersion, &ver) != noErr)
ver = 0x1000; // oh well.
else if (ver < 0x1030)
convert = 1; // split (ver) into (major),(minor),(patch).
else
{
// presumably this won't fail. But if it does, we'll just use the
// original version value. This might cut the value--10.12.11 will
// come out to 10.9.9, for example--but it's better than nothing.
if (Gestalt(gestaltSystemVersionMajor, &major) != noErr)
convert = 1;
else if (Gestalt(gestaltSystemVersionMinor, &minor) != noErr)
convert = 1;
else if (Gestalt(gestaltSystemVersionBugFix, &patch) != noErr)
convert = 1;
} // else
if (convert)
{
major = ((ver & 0xFF00) >> 8);
major = (((major / 16) * 10) + (major % 16));
minor = ((ver & 0xF0) >> 4);
patch = (ver & 0xF);
308
} // if
309
310
311
312
313
combined = (major << 16) | (minor << 8) | patch;
checked = 1;
} // if
314
return (combined >= ((x << 16) | (y << 8) | z));
315
316
317
} // macosx_version_atleast
#endif
318
319
320
321
static inline void out_of_memory(void)
{
set_error("out of memory");
} // out_of_memory
322
323
324
static inline void *Malloc(const size_t len)
{
325
void *retval = ctx->malloc_fn((int) len, ctx->malloc_data);
326
if (retval == NULL)
327
out_of_memory();
328
return retval;
329
330
331
332
} // Malloc
static inline void Free(void *ptr)
{
333
if (ptr != NULL)
334
ctx->free_fn(ptr, ctx->malloc_data);
335
336
337
} // Free
338
339
340
341
342
343
344
345
346
static inline void toggle_gl_state(GLenum state, int val)
{
if (val)
ctx->glEnable(state);
else
ctx->glDisable(state);
} // toggle_gl_state
347
348
349
350
351
// profile-specific implementations...
#if SUPPORT_PROFILE_GLSL
static inline GLenum glsl_shader_type(const MOJOSHADER_shaderType t)
{
352
// these enums match between core 2.0 and the ARB extensions.
353
354
355
356
357
358
359
360
361
362
if (t == MOJOSHADER_TYPE_VERTEX)
return GL_VERTEX_SHADER;
else if (t == MOJOSHADER_TYPE_PIXEL)
return GL_FRAGMENT_SHADER;
// !!! FIXME: geometry shaders?
return GL_NONE;
} // glsl_shader_type
363
364
static int impl_GLSL_MustPushConstantArrays(void) { return 1; }
static int impl_GLSL_MustPushSamplers(void) { return 1; }
365
366
367
static int impl_GLSL_MaxUniforms(MOJOSHADER_shaderType shader_type)
{
368
// these enums match between core 2.0 and the ARB extensions.
369
370
371
GLenum pname = GL_NONE;
GLint val = 0;
if (shader_type == MOJOSHADER_TYPE_VERTEX)
372
pname = GL_MAX_VERTEX_UNIFORM_COMPONENTS;
373
else if (shader_type == MOJOSHADER_TYPE_PIXEL)
374
pname = GL_MAX_FRAGMENT_UNIFORM_COMPONENTS;
375
376
377
378
379
380
381
382
383
384
385
else
return -1;
ctx->glGetIntegerv(pname, &val);
return (int) val;
} // impl_GLSL_MaxUniforms
static int impl_GLSL_CompileShader(const MOJOSHADER_parseData *pd, GLuint *s)
{
GLint ok = 0;
386
const GLint codelen = (GLint) pd->output_len;
387
388
const GLenum shader_type = glsl_shader_type(pd->shader_type);
389
if (ctx->have_opengl_2)
390
{
391
392
393
394
395
396
397
398
399
400
401
402
403
404
const GLuint shader = ctx->glCreateShader(shader_type);
ctx->glShaderSource(shader, 1, (const GLchar**) &pd->output, &codelen);
ctx->glCompileShader(shader);
ctx->glGetShaderiv(shader, GL_COMPILE_STATUS, &ok);
if (!ok)
{
GLsizei len = 0;
ctx->glGetInfoLogARB(shader, sizeof (error_buffer), &len,
(GLchar *) error_buffer);
*s = 0;
return 0;
} // if
*s = shader;
405
} // if
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
else
{
const GLhandleARB shader = ctx->glCreateShaderObjectARB(shader_type);
assert(sizeof (shader) == sizeof (*s)); // not always true on OS X!
ctx->glShaderSourceARB(shader, 1,
(const GLcharARB **) &pd->output, &codelen);
ctx->glCompileShaderARB(shader);
ctx->glGetObjectParameterivARB(shader,GL_OBJECT_COMPILE_STATUS_ARB,&ok);
if (!ok)
{
GLsizei len = 0;
ctx->glGetInfoLogARB(shader, sizeof (error_buffer), &len,
(GLcharARB *) error_buffer);
*s = 0;
return 0;
} // if
*s = (GLuint) shader;
} // else
425
426
427
428
429
430
431
return 1;
} // impl_GLSL_CompileShader
static void impl_GLSL_DeleteShader(const GLuint shader)
{
432
433
434
435
if (ctx->have_opengl_2)
ctx->glDeleteShader(shader);
else
ctx->glDeleteObjectARB((GLhandleARB) shader);
436
437
438
439
440
} // impl_GLSL_DeleteShader
static void impl_GLSL_DeleteProgram(const GLuint program)
{
441
442
443
444
if (ctx->have_opengl_2)
ctx->glDeleteProgram(program);
else
ctx->glDeleteObjectARB((GLhandleARB) program);
445
446
447
448
449
450
} // impl_GLSL_DeleteProgram
static GLint impl_GLSL_GetUniformLocation(MOJOSHADER_glProgram *program,
MOJOSHADER_glShader *shader, int idx)
{
451
return 0; // no-op, we push this as one big-ass array now.
452
453
454
} // impl_GLSL_GetUniformLocation
455
456
457
458
459
460
461
462
463
static inline GLint glsl_uniform_loc(MOJOSHADER_glProgram *program,
const char *name)
{
return ctx->have_opengl_2 ?
ctx->glGetUniformLocation(program->handle, name) :
ctx->glGetUniformLocationARB((GLhandleARB) program->handle, name);
} // glsl_uniform_loc
464
465
466
static GLint impl_GLSL_GetSamplerLocation(MOJOSHADER_glProgram *program,
MOJOSHADER_glShader *shader, int idx)
{
467
return glsl_uniform_loc(program, shader->parseData->samplers[idx].name);
468
469
470
471
472
473
474
} // impl_GLSL_GetSamplerLocation
static GLint impl_GLSL_GetAttribLocation(MOJOSHADER_glProgram *program, int idx)
{
const MOJOSHADER_parseData *pd = program->vertex->parseData;
const MOJOSHADER_attribute *a = pd->attributes;
475
476
477
478
479
480
481
482
483
if (ctx->have_opengl_2)
{
return ctx->glGetAttribLocation(program->handle,
(const GLchar *) a[idx].name);
} // if
return ctx->glGetAttribLocationARB((GLhandleARB) program->handle,
(const GLcharARB *) a[idx].name);
484
485
486
487
488
489
} // impl_GLSL_GetAttribLocation
static GLuint impl_GLSL_LinkProgram(MOJOSHADER_glShader *vshader,
MOJOSHADER_glShader *pshader)
{
490
GLint ok = 0;
491
492
493
494
if (ctx->have_opengl_2)
{
const GLuint program = ctx->glCreateProgram();
495
496
497
if (vshader != NULL) ctx->glAttachShader(program, vshader->handle);
if (pshader != NULL) ctx->glAttachShader(program, pshader->handle);
498
499
500
501
502
503
504
505
506
507
508
509
510
511
ctx->glLinkProgram(program);
ctx->glGetProgramiv(program, GL_LINK_STATUS, &ok);
if (!ok)
{
GLsizei len = 0;
ctx->glGetProgramInfoLog(program, sizeof (error_buffer),
&len, (GLchar *) error_buffer);
ctx->glDeleteProgram(program);
return 0;
} // if
return program;
512
} // if
513
514
515
516
else
{
const GLhandleARB program = ctx->glCreateProgramObjectARB();
assert(sizeof(program) == sizeof(GLuint)); // not always true on OS X!
517
518
519
if (vshader != NULL)
ctx->glAttachObjectARB(program, (GLhandleARB) vshader->handle);
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
if (pshader != NULL)
ctx->glAttachObjectARB(program, (GLhandleARB) pshader->handle);
ctx->glLinkProgramARB(program);
ctx->glGetObjectParameterivARB(program, GL_OBJECT_LINK_STATUS_ARB, &ok);
if (!ok)
{
GLsizei len = 0;
ctx->glGetInfoLogARB(program, sizeof (error_buffer),
&len, (GLcharARB *) error_buffer);
ctx->glDeleteObjectARB(program);
return 0;
} // if
return (GLuint) program;
} // else
} // impl_GLSL_LinkProgram
539
540
static void impl_GLSL_FinalInitProgram(MOJOSHADER_glProgram *program)
541
{
542
543
544
545
546
547
548
program->vs_float4_loc = glsl_uniform_loc(program, "vs_uniforms_vec4");
program->vs_int4_loc = glsl_uniform_loc(program, "vs_uniforms_ivec4");
program->vs_bool_loc = glsl_uniform_loc(program, "vs_uniforms_bool");
program->ps_float4_loc = glsl_uniform_loc(program, "ps_uniforms_vec4");
program->ps_int4_loc = glsl_uniform_loc(program, "ps_uniforms_ivec4");
program->ps_bool_loc = glsl_uniform_loc(program, "ps_uniforms_bool");
549
} // impl_GLSL_FinalInitProgram
550
551
552
static void impl_GLSL_UseProgram(MOJOSHADER_glProgram *program)
553
{
554
555
556
557
558
if (ctx->have_opengl_2)
ctx->glUseProgram(program ? program->handle : 0);
else
ctx->glUseProgramObjectARB((GLhandleARB) (program ? program->handle : 0));
} // impl_GLSL_UseProgram
559
560
561
562
563
static void impl_GLSL_PushConstantArray(MOJOSHADER_glProgram *program,
const MOJOSHADER_uniform *u,
const GLfloat *f)
564
{
565
const GLint loc = glsl_uniform_loc(program, u->name);
566
if (loc >= 0) // not optimized out?
567
568
ctx->glUniform4fv(loc, u->array_count, f);
} // impl_GLSL_PushConstantArray
569
570
571
static void impl_GLSL_PushUniforms(void)
572
{
573
const MOJOSHADER_glProgram *program = ctx->bound_program;
574
575
576
assert(program->uniform_count > 0); // don't call with nothing to do!
577
578
579
580
581
582
if (program->vs_float4_loc != -1)
{
ctx->glUniform4fv(program->vs_float4_loc,
program->vs_uniforms_float4_count,
program->vs_uniforms_float4);
} // if
583
584
585
586
587
588
589
if (program->vs_int4_loc != -1)
{
ctx->glUniform4iv(program->vs_int4_loc,
program->vs_uniforms_int4_count,
program->vs_uniforms_int4);
} // if
590
591
592
593
594
595
596
if (program->vs_bool_loc != -1)
{
ctx->glUniform1iv(program->vs_bool_loc,
program->vs_uniforms_bool_count,
program->vs_uniforms_bool);
} // if
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
if (program->ps_float4_loc != -1)
{
ctx->glUniform4fv(program->ps_float4_loc,
program->ps_uniforms_float4_count,
program->ps_uniforms_float4);
} // if
if (program->ps_int4_loc != -1)
{
ctx->glUniform4iv(program->ps_int4_loc,
program->ps_uniforms_int4_count,
program->ps_uniforms_int4);
} // if
if (program->ps_bool_loc != -1)
{
ctx->glUniform1iv(program->ps_bool_loc,
program->ps_uniforms_bool_count,
program->ps_uniforms_bool);
} // if
} // impl_GLSL_PushUniforms
static void impl_GLSL_PushSampler(GLint loc, GLuint sampler)
622
623
{
ctx->glUniform1i(loc, sampler);
624
} // impl_GLSL_PushSampler
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
#endif // SUPPORT_PROFILE_GLSL
#if SUPPORT_PROFILE_ARB1
static inline GLenum arb1_shader_type(const MOJOSHADER_shaderType t)
{
if (t == MOJOSHADER_TYPE_VERTEX)
return GL_VERTEX_PROGRAM_ARB;
else if (t == MOJOSHADER_TYPE_PIXEL)
return GL_FRAGMENT_PROGRAM_ARB;
// !!! FIXME: geometry shaders?
return GL_NONE;
} // arb1_shader_type
641
642
static int impl_ARB1_MustPushConstantArrays(void) { return 0; }
static int impl_ARB1_MustPushSamplers(void) { return 0; }
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
static int impl_ARB1_MaxUniforms(MOJOSHADER_shaderType shader_type)
{
GLint retval = 0;
const GLenum program_type = arb1_shader_type(shader_type);
if (program_type == GL_NONE)
return -1;
ctx->glGetProgramivARB(program_type, GL_MAX_PROGRAM_PARAMETERS_ARB, &retval);
return (int) retval; // !!! FIXME: times four?
} // impl_ARB1_MaxUniforms
static int impl_ARB1_CompileShader(const MOJOSHADER_parseData *pd, GLuint *s)
{
GLint shaderlen = (GLint) pd->output_len;
const GLenum shader_type = arb1_shader_type(pd->shader_type);
GLuint shader = 0;
ctx->glGenProgramsARB(1, &shader);
ctx->glGetError(); // flush any existing error state.
ctx->glBindProgramARB(shader_type, shader);
ctx->glProgramStringARB(shader_type, GL_PROGRAM_FORMAT_ASCII_ARB,
shaderlen, pd->output);
if (ctx->glGetError() == GL_INVALID_OPERATION)
{
GLint pos = 0;
ctx->glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &pos);
const GLubyte *errstr = ctx->glGetString(GL_PROGRAM_ERROR_STRING_ARB);
snprintf(error_buffer, sizeof (error_buffer),
"ARB1 compile error at position %d: %s",
(int) pos, (const char *) errstr);
ctx->glBindProgramARB(shader_type, 0);
ctx->glDeleteProgramsARB(1, &shader);
*s = 0;
return 0;
} // if
*s = shader;
return 1;
} // impl_ARB1_CompileShader
static void impl_ARB1_DeleteShader(const GLuint _shader)
{
GLuint shader = _shader; // const removal.
ctx->glDeleteProgramsARB(1, &shader);
} // impl_ARB1_DeleteShader
static void impl_ARB1_DeleteProgram(const GLuint program)
{
// no-op. ARB1 doesn't have real linked programs.
} // impl_GLSL_DeleteProgram
static GLint impl_ARB1_GetUniformLocation(MOJOSHADER_glProgram *program,
MOJOSHADER_glShader *shader, int idx)
{
702
return 0; // no-op, we push this as one big-ass array now.
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
} // impl_ARB1_GetUniformLocation
static GLint impl_ARB1_GetSamplerLocation(MOJOSHADER_glProgram *program,
MOJOSHADER_glShader *shader, int idx)
{
return shader->parseData->samplers[idx].index;
} // impl_ARB1_GetSamplerLocation
static GLint impl_ARB1_GetAttribLocation(MOJOSHADER_glProgram *program, int idx)
{
return idx; // map to vertex arrays in the same order as the parseData.
} // impl_ARB1_GetAttribLocation
static GLuint impl_ARB1_LinkProgram(MOJOSHADER_glShader *vshader,
MOJOSHADER_glShader *pshader)
{
// there is no formal linking in ARB1...just return a unique value.
static GLuint retval = 1;
return retval++;
} // impl_ARB1_LinkProgram
727
static void impl_ARB1_FinalInitProgram(MOJOSHADER_glProgram *program)
728
729
{
// no-op.
730
} // impl_ARB1_FinalInitProgram
731
732
733
static void impl_ARB1_UseProgram(MOJOSHADER_glProgram *program)
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
{
GLuint vhandle = 0;
GLuint phandle = 0;
if (program != NULL)
{
if (program->vertex != NULL)
vhandle = program->vertex->handle;
if (program->fragment != NULL)
phandle = program->fragment->handle;
} // if
toggle_gl_state(GL_VERTEX_PROGRAM_ARB, vhandle != 0);
toggle_gl_state(GL_FRAGMENT_PROGRAM_ARB, phandle != 0);
ctx->glBindProgramARB(GL_VERTEX_PROGRAM_ARB, vhandle);
ctx->glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, phandle);
750
} // impl_ARB1_UseProgram
751
752
753
754
755
static void impl_ARB1_PushConstantArray(MOJOSHADER_glProgram *program,
const MOJOSHADER_uniform *u,
const GLfloat *f)
756
{
757
758
// no-op. Constant arrays are defined in source code for arb1.
} // impl_ARB1_PushConstantArray
759
760
761
static void impl_ARB1_PushUniforms(void)
762
{
763
764
765
// vertex shader uniforms come first in program->uniforms array.
MOJOSHADER_shaderType shader_type = MOJOSHADER_TYPE_VERTEX;
GLenum arb_shader_type = arb1_shader_type(shader_type);
766
const MOJOSHADER_glProgram *program = ctx->bound_program;
767
768
769
770
771
const uint32 count = program->uniform_count;
const GLfloat *srcf = program->vs_uniforms_float4;
const GLint *srci = program->vs_uniforms_int4;
const GLint *srcb = program->vs_uniforms_bool;
GLint loc = 0;
772
uint32 i;
773
774
775
assert(count > 0); // shouldn't call this with nothing to do!
776
777
for (i = 0; i < count; i++)
{
778
UniformMap *map = &program->uniforms[i];
779
const MOJOSHADER_shaderType uniform_shader_type = map->shader_type;
780
781
782
const MOJOSHADER_uniform *u = map->uniform;
const MOJOSHADER_uniformType type = u->type;
const int size = u->array_count ? u->array_count : 1;
783
784
assert(!u->constant);
785
786
// Did we switch from vertex to pixel (to geometry, etc)?
787
if (shader_type != uniform_shader_type)
788
{
789
790
// we start with vertex, move to pixel, then to geometry, etc.
// The array should always be sorted as such.
791
if (uniform_shader_type == MOJOSHADER_TYPE_PIXEL)
792
{
793
assert(shader_type == MOJOSHADER_TYPE_VERTEX);
794
795
796
797
798
799
800
srcf = program->ps_uniforms_float4;
srci = program->ps_uniforms_int4;
srcb = program->ps_uniforms_bool;
loc = 0;
} // if
else
{
801
// These should be ordered vertex, then pixel, then geometry.
802
803
assert(0 && "Unexpected shader type");
} // else
804
805
806
shader_type = uniform_shader_type;
arb_shader_type = arb1_shader_type(uniform_shader_type);
807
} // if
808
809
810
811
if (type == MOJOSHADER_UNIFORM_FLOAT)
{
int i;
812
813
for (i = 0; i < size; i++, srcf += 4, loc++)
ctx->glProgramLocalParameter4fvARB(arb_shader_type, loc, srcf);
814
815
816
817
} // if
else if (type == MOJOSHADER_UNIFORM_INT)
{
int i;
818
if (ctx->have_GL_NV_gpu_program4)
819
820
{
// GL_NV_gpu_program4 has integer uniform loading support.
821
822
for (i = 0; i < size; i++, srci += 4, loc++)
ctx->glProgramLocalParameterI4ivNV(arb_shader_type, loc, srci);
823
824
825
} // if
else
{
826
for (i = 0; i < size; i++, srci += 4, loc++)
827
{
828
829
830
831
832
const GLfloat fv[4] = {
(GLfloat) srci[0], (GLfloat) srci[1],
(GLfloat) srci[2], (GLfloat) srci[3]
};
ctx->glProgramLocalParameter4fvARB(arb_shader_type, loc, fv);
833
834
835
836
837
838
} // for
} // else
} // else if
else if (type == MOJOSHADER_UNIFORM_BOOL)
{
int i;
839
if (ctx->have_GL_NV_gpu_program4)
840
841
{
// GL_NV_gpu_program4 has integer uniform loading support.
842
for (i = 0; i < size; i++, srcb++, loc++)
843
{
844
const GLint ib = (GLint) ((*srcb) ? 1 : 0);
845
const GLint iv[4] = { ib, ib, ib, ib };
846
ctx->glProgramLocalParameterI4ivNV(arb_shader_type, loc, iv);
847
848
849
850
} // for
} // if
else
{
851
for (i = 0; i < size; i++, srcb++, loc++)
852
{
853
const GLfloat fb = (GLfloat) ((*srcb) ? 1.0f : 0.0f);
854
const GLfloat fv[4] = { fb, fb, fb, fb };
855
ctx->glProgramLocalParameter4fvARB(arb_shader_type, loc, fv);
856
857
858
859
860
} // for
} // else
} // else if
} // for
} // impl_ARB1_PushUniforms
861
862
static void impl_ARB1_PushSampler(GLint loc, GLuint sampler)
863
864
865
{
// no-op in this profile...arb1 uses the texture units as-is.
assert(loc == (GLint) sampler);
866
} // impl_ARB1_PushSampler
867
868
869
870
871
872
873
874
875
876
#endif // SUPPORT_PROFILE_ARB1
const char *MOJOSHADER_glGetError(void)
{
return error_buffer;
} // MOJOSHADER_glGetError
877
878
static void *loadsym(MOJOSHADER_glGetProcAddress lookup, void *d,
const char *fn, int *ext)
879
880
881
{
void *retval = NULL;
if (lookup != NULL)
882
retval = lookup(fn, d);
883
884
885
886
887
888
889
if (retval == NULL)
*ext = 0;
return retval;
} // loadsym
890
static void lookup_entry_points(MOJOSHADER_glGetProcAddress lookup, void *d)
891
{
892
#define DO_LOOKUP(ext, typ, fn) { \
893
ctx->fn = (typ) loadsym(lookup, d, #fn, &ctx->have_##ext); \
894
895
}
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
DO_LOOKUP(core_opengl, PFNGLGETSTRINGPROC, glGetString);
DO_LOOKUP(core_opengl, PFNGLGETERRORPROC, glGetError);
DO_LOOKUP(core_opengl, PFNGLGETINTEGERVPROC, glGetIntegerv);
DO_LOOKUP(core_opengl, PFNGLENABLEPROC, glEnable);
DO_LOOKUP(core_opengl, PFNGLDISABLEPROC, glDisable);
DO_LOOKUP(opengl_2, PFNGLDELETESHADERPROC, glDeleteShader);
DO_LOOKUP(opengl_2, PFNGLDELETEPROGRAMPROC, glDeleteProgram);
DO_LOOKUP(opengl_2, PFNGLATTACHSHADERPROC, glAttachShader);
DO_LOOKUP(opengl_2, PFNGLCOMPILESHADERPROC, glCompileShader);
DO_LOOKUP(opengl_2, PFNGLCREATESHADERPROC, glCreateShader);
DO_LOOKUP(opengl_2, PFNGLCREATEPROGRAMPROC, glCreateProgram);
DO_LOOKUP(opengl_2, PFNGLDISABLEVERTEXATTRIBARRAYPROC, glDisableVertexAttribArray);
DO_LOOKUP(opengl_2, PFNGLENABLEVERTEXATTRIBARRAYPROC, glEnableVertexAttribArray);
DO_LOOKUP(opengl_2, PFNGLGETATTRIBLOCATIONPROC, glGetAttribLocation);
DO_LOOKUP(opengl_2, PFNGLGETPROGRAMINFOLOGPROC, glGetProgramInfoLog);
DO_LOOKUP(opengl_2, PFNGLGETSHADERIVPROC, glGetShaderiv);
DO_LOOKUP(opengl_2, PFNGLGETPROGRAMIVPROC, glGetProgramiv);
DO_LOOKUP(opengl_2, PFNGLGETUNIFORMLOCATIONPROC, glGetUniformLocation);
DO_LOOKUP(opengl_2, PFNGLLINKPROGRAMPROC, glLinkProgram);
DO_LOOKUP(opengl_2, PFNGLSHADERSOURCEPROC, glShaderSource);
DO_LOOKUP(opengl_2, PFNGLUNIFORM1IPROC, glUniform1i);
DO_LOOKUP(opengl_2, PFNGLUNIFORM1IVPROC, glUniform1iv);
DO_LOOKUP(opengl_2, PFNGLUNIFORM4FVPROC, glUniform4fv);
DO_LOOKUP(opengl_2, PFNGLUNIFORM4IVPROC, glUniform4iv);
DO_LOOKUP(opengl_2, PFNGLUSEPROGRAMPROC, glUseProgram);
DO_LOOKUP(opengl_2, PFNGLVERTEXATTRIBPOINTERPROC, glVertexAttribPointer);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLDELETEOBJECTARBPROC, glDeleteObjectARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLATTACHOBJECTARBPROC, glAttachObjectARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLCOMPILESHADERARBPROC, glCompileShaderARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLCREATEPROGRAMOBJECTARBPROC, glCreateProgramObjectARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLCREATESHADEROBJECTARBPROC, glCreateShaderObjectARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLGETINFOLOGARBPROC, glGetInfoLogARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLGETOBJECTPARAMETERIVARBPROC, glGetObjectParameterivARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLGETUNIFORMLOCATIONARBPROC, glGetUniformLocationARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLLINKPROGRAMARBPROC, glLinkProgramARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLSHADERSOURCEARBPROC, glShaderSourceARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLUNIFORM1IARBPROC, glUniform1iARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLUNIFORM1IVARBPROC, glUniform1ivARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLUNIFORM4FVARBPROC, glUniform4fvARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLUNIFORM4IVARBPROC, glUniform4ivARB);
DO_LOOKUP(GL_ARB_shader_objects, PFNGLUSEPROGRAMOBJECTARBPROC, glUseProgramObjectARB);
DO_LOOKUP(GL_ARB_vertex_shader, PFNGLDISABLEVERTEXATTRIBARRAYARBPROC, glDisableVertexAttribArrayARB);
DO_LOOKUP(GL_ARB_vertex_shader, PFNGLENABLEVERTEXATTRIBARRAYARBPROC, glEnableVertexAttribArrayARB);
DO_LOOKUP(GL_ARB_vertex_shader, PFNGLGETATTRIBLOCATIONARBPROC, glGetAttribLocationARB);
DO_LOOKUP(GL_ARB_vertex_shader, PFNGLVERTEXATTRIBPOINTERARBPROC, glVertexAttribPointerARB);
DO_LOOKUP(GL_ARB_vertex_program, PFNGLVERTEXATTRIBPOINTERARBPROC, glVertexAttribPointerARB);
942
DO_LOOKUP(GL_ARB_vertex_program, PFNGLGETPROGRAMIVARBPROC, glGetProgramivARB);
943
DO_LOOKUP(GL_ARB_vertex_program, PFNGLPROGRAMLOCALPARAMETER4FVARBPROC, glProgramLocalParameter4fvARB);
944
945
946
947
DO_LOOKUP(GL_ARB_vertex_program, PFNGLDELETEPROGRAMSARBPROC, glDeleteProgramsARB);
DO_LOOKUP(GL_ARB_vertex_program, PFNGLGENPROGRAMSARBPROC, glGenProgramsARB);
DO_LOOKUP(GL_ARB_vertex_program, PFNGLBINDPROGRAMARBPROC, glBindProgramARB);
DO_LOOKUP(GL_ARB_vertex_program, PFNGLPROGRAMSTRINGARBPROC, glProgramStringARB);
948
DO_LOOKUP(GL_NV_gpu_program4, PFNGLPROGRAMLOCALPARAMETERI4IVNVPROC, glProgramLocalParameterI4ivNV);
949
950
951
952
#undef DO_LOOKUP
} // lookup_entry_points
953
954
955
956
957
static inline int opengl_version_atleast(const int major, const int minor)
{
return ( ((ctx->opengl_major << 16) | (ctx->opengl_minor & 0xFFFF)) >=
((major << 16) | (minor & 0xFFFF)) );
} // opengl_version_atleast
958
959
960
961
962
963
964
static int verify_extension(const char *ext, int have, const char *extlist,
int major, int minor)
{
if (have == 0)
return 0; // don't bother checking, we're missing an entry point.
965
else if (!ctx->have_core_opengl)
966
967
return 0; // don't bother checking, we're missing basic functionality.
968
// See if it's in the spec for this GL implementation's version.
969
970
if ((major > 0) && (opengl_version_atleast(major, minor)))
return 1;
971
972
973
974
975
976
977
978
979
980
981
982
983
984
// Not available in the GL version, check the extension list.
const char *ptr = strstr(extlist, ext);
if (ptr == NULL)
return 0;
const char endchar = ptr[strlen(ext)];
if ((endchar == '\0') || (endchar == ' '))
return 1; // extension is in the list.
return 0; // just not supported, fail.
} // verify_extension
985
static void parse_opengl_version_str(const char *verstr, int *maj, int *min)
986
987
{
if (verstr == NULL)
988
*maj = *min = 0;
989
else
990
991
992
993
sscanf(verstr, "%d.%d", maj, min);
} // parse_opengl_version_str
994
995
#if SUPPORT_PROFILE_GLSL
static inline int glsl_version_atleast(const int major, const int minor)
996
{
997
998
999
1000
return ( ((ctx->glsl_major << 16) | (ctx->glsl_minor & 0xFFFF)) >=
((major << 16) | (minor & 0xFFFF)) );
} // glsl_version_atleast
#endif