1 /*-------------------------------------------------------------------------
2 * drawElements Quality Program OpenGL ES Utilities
3 * ------------------------------------------------
4 *
5 * Copyright 2014 The Android Open Source Project
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 *//*!
20 * \file
21 * \brief Render context implementation that does no rendering.
22 *//*--------------------------------------------------------------------*/
23
24 #include "tcuNullRenderContext.hpp"
25 #include "tcuTexture.hpp"
26 #include "tcuTextureUtil.hpp"
27 #include "deThreadLocal.hpp"
28 #include "gluRenderConfig.hpp"
29 #include "gluTextureUtil.hpp"
30 #include "glwEnums.hpp"
31
32 #include <string>
33 #include <vector>
34
35 namespace tcu
36 {
37 namespace null
38 {
39
40 using namespace glw;
41
42 #include "tcuNullRenderContextFuncs.inl"
43
44 using namespace glu;
45 using std::string;
46 using std::vector;
47
48 class ObjectManager
49 {
50 public:
ObjectManager(void)51 ObjectManager (void)
52 : m_lastObject(0)
53 {
54 }
55
allocate(void)56 deUint32 allocate (void)
57 {
58 deUint32 object = ++m_lastObject;
59 if (object == 0)
60 object = ++m_lastObject; // Just ignore overflow.
61 return object;
62 }
63
free(deUint32 object)64 void free (deUint32 object)
65 {
66 DE_UNREF(object);
67 }
68
69 private:
70 deUint32 m_lastObject;
71 };
72
73 class Context
74 {
75 public:
76 Context (ContextType ctxType_);
77 ~Context (void);
78
79 private:
80 Context (const Context&);
81 Context& operator= (const Context&);
82
83 void addExtension (const char* name);
84
85 public:
86 // GL state exposed to implementation functions.
87 const ContextType ctxType;
88
89 string vendor;
90 string version;
91 string renderer;
92 string shadingLanguageVersion;
93 string extensions;
94 vector<string> extensionList;
95 vector<deUint32> compressedTextureList;
96
97 GLenum lastError;
98
99 int pixelPackRowLength;
100 int pixelPackSkipRows;
101 int pixelPackSkipPixels;
102 int pixelPackAlignment;
103
104 GLuint pixelPackBufferBufferBinding;
105
106 ObjectManager shaders;
107 ObjectManager programs;
108 ObjectManager textures;
109 ObjectManager buffers;
110 ObjectManager renderbuffers;
111 ObjectManager framebuffers;
112 ObjectManager samplers;
113 ObjectManager vertexArrays;
114 ObjectManager queries;
115 ObjectManager transformFeedbacks;
116 ObjectManager programPipelines;
117 };
118
Context(ContextType ctxType_)119 Context::Context (ContextType ctxType_)
120 : ctxType (ctxType_)
121 , vendor ("drawElements")
122 , renderer ("dummy")
123 , lastError (GL_NO_ERROR)
124 , pixelPackRowLength (0)
125 , pixelPackSkipRows (0)
126 , pixelPackSkipPixels (0)
127 , pixelPackAlignment (0)
128 , pixelPackBufferBufferBinding (0)
129 {
130 using glu::ApiType;
131
132 if (ctxType.getAPI() == ApiType::es(2, 0))
133 {
134 version = "OpenGL ES 2.0";
135 shadingLanguageVersion = "OpenGL ES GLSL ES 1.0";
136 }
137 else if (ctxType.getAPI() == ApiType::es(3, 0))
138 {
139 version = "OpenGL ES 3.0";
140 shadingLanguageVersion = "OpenGL ES GLSL ES 3.0";
141 }
142 else if (ctxType.getAPI() == ApiType::es(3, 1))
143 {
144 version = "OpenGL ES 3.1";
145 shadingLanguageVersion = "OpenGL ES GLSL ES 3.1";
146 addExtension("GL_OES_texture_stencil8");
147 addExtension("GL_OES_sample_shading");
148 addExtension("GL_OES_sample_variables");
149 addExtension("GL_OES_shader_multisample_interpolation");
150 addExtension("GL_OES_shader_image_atomic");
151 addExtension("GL_OES_texture_storage_multisample_2d_array");
152 addExtension("GL_KHR_blend_equation_advanced");
153 addExtension("GL_KHR_blend_equation_advanced_coherent");
154 addExtension("GL_EXT_shader_io_blocks");
155 addExtension("GL_EXT_geometry_shader");
156 addExtension("GL_EXT_geometry_point_size");
157 addExtension("GL_EXT_tessellation_shader");
158 addExtension("GL_EXT_tessellation_point_size");
159 addExtension("GL_EXT_gpu_shader5");
160 addExtension("GL_EXT_shader_implicit_conversions");
161 addExtension("GL_EXT_texture_buffer");
162 addExtension("GL_EXT_texture_cube_map_array");
163 addExtension("GL_EXT_draw_buffers_indexed");
164 addExtension("GL_EXT_texture_sRGB_decode");
165 addExtension("GL_EXT_texture_border_clamp");
166 addExtension("GL_KHR_debug");
167 addExtension("GL_EXT_primitive_bounding_box");
168 addExtension("GL_ANDROID_extension_pack_es31a");
169 addExtension("GL_EXT_copy_image");
170 }
171 else if (ctxType.getAPI() == ApiType::es(3, 2))
172 {
173 version = "OpenGL ES 3.2";
174 shadingLanguageVersion = "OpenGL ES GLSL ES 3.2";
175 }
176 else if (glu::isContextTypeGLCore(ctxType) && ctxType.getMajorVersion() == 3)
177 {
178 version = "3.3.0";
179 shadingLanguageVersion = "3.30";
180 }
181 else if (glu::isContextTypeGLCore(ctxType) && ctxType.getMajorVersion() == 4 && ctxType.getMinorVersion() <= 4)
182 {
183 version = "4.4.0";
184 shadingLanguageVersion = "4.40";
185 }
186 else if (glu::isContextTypeGLCore(ctxType) && ctxType.getMajorVersion() == 4 && ctxType.getMinorVersion() == 5)
187 {
188 version = "4.5.0";
189 shadingLanguageVersion = "4.50";
190 }
191 else if (glu::isContextTypeGLCore(ctxType) && ctxType.getMajorVersion() == 4 && ctxType.getMinorVersion() == 6)
192 {
193 version = "4.6.0";
194 shadingLanguageVersion = "4.60";
195 }
196 else
197 throw tcu::NotSupportedError("Unsupported GL version", "", __FILE__, __LINE__);
198
199 if (isContextTypeES(ctxType))
200 {
201 addExtension("GL_EXT_color_buffer_float");
202 addExtension("GL_EXT_color_buffer_half_float");
203 }
204
205 // support compressed formats
206 {
207 static deUint32 compressedFormats[] =
208 {
209 GL_ETC1_RGB8_OES,
210 GL_COMPRESSED_R11_EAC,
211 GL_COMPRESSED_SIGNED_R11_EAC,
212 GL_COMPRESSED_RG11_EAC,
213 GL_COMPRESSED_SIGNED_RG11_EAC,
214 GL_COMPRESSED_RGB8_ETC2,
215 GL_COMPRESSED_SRGB8_ETC2,
216 GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2,
217 GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2,
218 GL_COMPRESSED_RGBA8_ETC2_EAC,
219 GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC,
220 GL_COMPRESSED_RGBA_ASTC_4x4_KHR,
221 GL_COMPRESSED_RGBA_ASTC_5x4_KHR,
222 GL_COMPRESSED_RGBA_ASTC_5x5_KHR,
223 GL_COMPRESSED_RGBA_ASTC_6x5_KHR,
224 GL_COMPRESSED_RGBA_ASTC_6x6_KHR,
225 GL_COMPRESSED_RGBA_ASTC_8x5_KHR,
226 GL_COMPRESSED_RGBA_ASTC_8x6_KHR,
227 GL_COMPRESSED_RGBA_ASTC_8x8_KHR,
228 GL_COMPRESSED_RGBA_ASTC_10x5_KHR,
229 GL_COMPRESSED_RGBA_ASTC_10x6_KHR,
230 GL_COMPRESSED_RGBA_ASTC_10x8_KHR,
231 GL_COMPRESSED_RGBA_ASTC_10x10_KHR,
232 GL_COMPRESSED_RGBA_ASTC_12x10_KHR,
233 GL_COMPRESSED_RGBA_ASTC_12x12_KHR,
234 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR,
235 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR,
236 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR,
237 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR,
238 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR,
239 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR,
240 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR,
241 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR,
242 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR,
243 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR,
244 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR,
245 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR,
246 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR,
247 GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR,
248 };
249
250 addExtension("GL_KHR_texture_compression_astc_hdr");
251 addExtension("GL_KHR_texture_compression_astc_ldr");
252 for (int ndx = 0; ndx < DE_LENGTH_OF_ARRAY(compressedFormats); ++ndx)
253 compressedTextureList.push_back(compressedFormats[ndx]);
254 }
255 }
256
~Context(void)257 Context::~Context (void)
258 {
259 }
260
addExtension(const char * name)261 void Context::addExtension (const char* name)
262 {
263 if (!extensions.empty())
264 extensions += " ";
265 extensions += name;
266
267 extensionList.push_back(name);
268 }
269
270 static de::ThreadLocal s_currentCtx;
271
setCurrentContext(Context * context)272 void setCurrentContext (Context* context)
273 {
274 s_currentCtx.set((void*)context);
275 }
276
getCurrentContext(void)277 Context* getCurrentContext (void)
278 {
279 return (Context*)s_currentCtx.get();
280 }
281
glGetError(void)282 GLW_APICALL GLenum GLW_APIENTRY glGetError (void)
283 {
284 Context* const ctx = getCurrentContext();
285 const GLenum lastErr = ctx->lastError;
286
287 ctx->lastError = GL_NO_ERROR;
288
289 return lastErr;
290 }
291
glGetIntegerv(GLenum pname,GLint * params)292 GLW_APICALL void GLW_APIENTRY glGetIntegerv (GLenum pname, GLint* params)
293 {
294 Context* const ctx = getCurrentContext();
295
296 switch (pname)
297 {
298 case GL_NUM_EXTENSIONS:
299 *params = (int)ctx->extensionList.size();
300 break;
301
302 case GL_MAX_VERTEX_ATTRIBS:
303 *params = 32;
304 break;
305
306 case GL_MAX_DRAW_BUFFERS:
307 case GL_MAX_COLOR_ATTACHMENTS:
308 *params = 8;
309 break;
310
311 case GL_MAX_TEXTURE_IMAGE_UNITS:
312 case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS:
313 case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS:
314 case GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS:
315 case GL_MAX_TESS_EVALUATION_TEXTURE_IMAGE_UNITS:
316 case GL_MAX_TESS_CONTROL_TEXTURE_IMAGE_UNITS:
317 *params = 32;
318 break;
319
320 case GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS:
321 case GL_MAX_FRAGMENT_SHADER_STORAGE_BLOCKS:
322 case GL_MAX_GEOMETRY_SHADER_STORAGE_BLOCKS:
323 case GL_MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS:
324 case GL_MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS:
325 case GL_MAX_COMPUTE_SHADER_STORAGE_BLOCKS:
326 *params = 8;
327 break;
328
329 case GL_MAX_VERTEX_ATOMIC_COUNTER_BUFFERS:
330 case GL_MAX_FRAGMENT_ATOMIC_COUNTER_BUFFERS:
331 case GL_MAX_GEOMETRY_ATOMIC_COUNTER_BUFFERS:
332 case GL_MAX_TESS_CONTROL_ATOMIC_COUNTER_BUFFERS:
333 case GL_MAX_TESS_EVALUATION_ATOMIC_COUNTER_BUFFERS:
334 case GL_MAX_COMPUTE_ATOMIC_COUNTER_BUFFERS:
335 *params = 8;
336 break;
337
338 case GL_MAX_SHADER_STORAGE_BLOCK_SIZE:
339 *params = 1u << 25;
340 break;
341
342 case GL_MAX_GEOMETRY_OUTPUT_VERTICES:
343 *params = 256;
344 break;
345
346 case GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS:
347 *params = 2048;
348 break;
349
350 case GL_MAX_GEOMETRY_SHADER_INVOCATIONS:
351 *params = 4;
352 break;
353
354 case GL_MAX_COLOR_TEXTURE_SAMPLES:
355 *params = 8;
356 break;
357
358 case GL_MAX_TEXTURE_SIZE:
359 case GL_MAX_CUBE_MAP_TEXTURE_SIZE:
360 case GL_MAX_3D_TEXTURE_SIZE:
361 case GL_MAX_RENDERBUFFER_SIZE:
362 case GL_MAX_TEXTURE_BUFFER_SIZE:
363 *params = 2048;
364 break;
365
366 case GL_MAX_ARRAY_TEXTURE_LAYERS:
367 *params = 128;
368 break;
369
370 case GL_NUM_SHADER_BINARY_FORMATS:
371 *params = 0;
372 break;
373
374 case GL_NUM_COMPRESSED_TEXTURE_FORMATS:
375 *params = (int)ctx->compressedTextureList.size();
376 break;
377
378 case GL_COMPRESSED_TEXTURE_FORMATS:
379 deMemcpy(params, &ctx->compressedTextureList[0], ctx->compressedTextureList.size()*sizeof(deUint32));
380 break;
381
382 case GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS:
383 *params = 16;
384 break;
385
386 case GL_MAX_UNIFORM_BUFFER_BINDINGS:
387 *params = 32;
388 break;
389
390 case GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT:
391 *params = 16;
392 break;
393
394 case GL_IMPLEMENTATION_COLOR_READ_FORMAT:
395 *params = GL_RGBA;
396 break;
397
398 case GL_IMPLEMENTATION_COLOR_READ_TYPE:
399 *params = GL_UNSIGNED_BYTE;
400 break;
401
402 case GL_SAMPLE_BUFFERS:
403 *params = 0;
404 break;
405
406 default:
407 break;
408 }
409 }
410
glGetBooleanv(GLenum pname,GLboolean * params)411 GLW_APICALL void GLW_APIENTRY glGetBooleanv (GLenum pname, GLboolean* params)
412 {
413 switch (pname)
414 {
415 case GL_SHADER_COMPILER:
416 *params = GL_TRUE;
417 break;
418
419 default:
420 break;
421 }
422 }
423
glGetFloatv(GLenum pname,GLfloat * params)424 GLW_APICALL void GLW_APIENTRY glGetFloatv (GLenum pname, GLfloat* params)
425 {
426 switch (pname)
427 {
428 case GL_ALIASED_LINE_WIDTH_RANGE:
429 case GL_ALIASED_POINT_SIZE_RANGE:
430 params[0] = 0.0f;
431 params[1] = 64.0f;
432 break;
433
434 default:
435 break;
436 }
437 }
438
glGetInternalformativ(GLenum target,GLenum internalformat,GLenum pname,GLsizei bufSize,GLint * params)439 GLW_APICALL void GLW_APIENTRY glGetInternalformativ (GLenum target, GLenum internalformat, GLenum pname, GLsizei bufSize, GLint* params)
440 {
441 static const int s_sampleCounts[] = { 16, 8, 4, 2, 1 };
442
443 DE_UNREF(internalformat);
444 DE_UNREF(target);
445
446 switch (pname)
447 {
448 case GL_NUM_SAMPLE_COUNTS:
449 if (bufSize >= 1)
450 *params = DE_LENGTH_OF_ARRAY(s_sampleCounts);
451 break;
452
453 case GL_SAMPLES:
454 deMemcpy(params, s_sampleCounts, de::min(bufSize, DE_LENGTH_OF_ARRAY(s_sampleCounts)));
455 break;
456
457 default:
458 break;
459 }
460 }
461
glGetString(GLenum name)462 GLW_APICALL const glw::GLubyte* GLW_APIENTRY glGetString (GLenum name)
463 {
464 Context* const ctx = getCurrentContext();
465
466 switch (name)
467 {
468 case GL_VENDOR: return (const glw::GLubyte*)ctx->vendor.c_str();
469 case GL_VERSION: return (const glw::GLubyte*)ctx->version.c_str();
470 case GL_RENDERER: return (const glw::GLubyte*)ctx->renderer.c_str();
471 case GL_SHADING_LANGUAGE_VERSION: return (const glw::GLubyte*)ctx->shadingLanguageVersion.c_str();
472 case GL_EXTENSIONS: return (const glw::GLubyte*)ctx->extensions.c_str();
473 default:
474 ctx->lastError = GL_INVALID_ENUM;
475 return DE_NULL;
476 }
477 }
478
glGetStringi(GLenum name,GLuint index)479 GLW_APICALL const glw::GLubyte* GLW_APIENTRY glGetStringi (GLenum name, GLuint index)
480 {
481 Context* const ctx = getCurrentContext();
482
483 if (name == GL_EXTENSIONS)
484 {
485 if ((size_t)index < ctx->extensionList.size())
486 return (const glw::GLubyte*)ctx->extensionList[index].c_str();
487 else
488 {
489 ctx->lastError = GL_INVALID_VALUE;
490 return DE_NULL;
491 }
492 }
493 else
494 {
495 ctx->lastError = GL_INVALID_ENUM;
496 return DE_NULL;
497 }
498 }
499
glCreateProgram()500 GLW_APICALL GLuint GLW_APIENTRY glCreateProgram ()
501 {
502 Context* const ctx = getCurrentContext();
503 return (GLuint)ctx->programs.allocate();
504 }
505
glCreateShader(GLenum type)506 GLW_APICALL GLuint GLW_APIENTRY glCreateShader (GLenum type)
507 {
508 Context* const ctx = getCurrentContext();
509 DE_UNREF(type);
510 return (GLuint)ctx->shaders.allocate();
511 }
512
glGetShaderiv(GLuint shader,GLenum pname,GLint * params)513 GLW_APICALL void GLW_APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint* params)
514 {
515 DE_UNREF(shader);
516
517 if (pname == GL_COMPILE_STATUS)
518 *params = GL_TRUE;
519 }
520
glGetProgramiv(GLuint program,GLenum pname,GLint * params)521 GLW_APICALL void GLW_APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint* params)
522 {
523 DE_UNREF(program);
524
525 if (pname == GL_LINK_STATUS)
526 *params = GL_TRUE;
527 }
528
glGenTextures(GLsizei n,GLuint * textures)529 GLW_APICALL void GLW_APIENTRY glGenTextures (GLsizei n, GLuint* textures)
530 {
531 Context* const ctx = getCurrentContext();
532
533 if (textures)
534 {
535 for (int ndx = 0; ndx < n; ndx++)
536 textures[ndx] = ctx->textures.allocate();
537 }
538 }
539
glGenQueries(GLsizei n,GLuint * ids)540 GLW_APICALL void GLW_APIENTRY glGenQueries (GLsizei n, GLuint* ids)
541 {
542 Context* const ctx = getCurrentContext();
543
544 if (ids)
545 {
546 for (int ndx = 0; ndx < n; ndx++)
547 ids[ndx] = ctx->queries.allocate();
548 }
549 }
550
glGenBuffers(GLsizei n,GLuint * buffers)551 GLW_APICALL void GLW_APIENTRY glGenBuffers (GLsizei n, GLuint* buffers)
552 {
553 Context* const ctx = getCurrentContext();
554
555 if (buffers)
556 {
557 for (int ndx = 0; ndx < n; ndx++)
558 buffers[ndx] = ctx->buffers.allocate();
559 }
560 }
561
glGenRenderbuffers(GLsizei n,GLuint * renderbuffers)562 GLW_APICALL void GLW_APIENTRY glGenRenderbuffers (GLsizei n, GLuint* renderbuffers)
563 {
564 Context* const ctx = getCurrentContext();
565
566 if (renderbuffers)
567 {
568 for (int ndx = 0; ndx < n; ndx++)
569 renderbuffers[ndx] = ctx->renderbuffers.allocate();
570 }
571 }
572
glGenFramebuffers(GLsizei n,GLuint * framebuffers)573 GLW_APICALL void GLW_APIENTRY glGenFramebuffers (GLsizei n, GLuint* framebuffers)
574 {
575 Context* const ctx = getCurrentContext();
576
577 if (framebuffers)
578 {
579 for (int ndx = 0; ndx < n; ndx++)
580 framebuffers[ndx] = ctx->framebuffers.allocate();
581 }
582 }
583
glGenVertexArrays(GLsizei n,GLuint * arrays)584 GLW_APICALL void GLW_APIENTRY glGenVertexArrays (GLsizei n, GLuint* arrays)
585 {
586 Context* const ctx = getCurrentContext();
587
588 if (arrays)
589 {
590 for (int ndx = 0; ndx < n; ndx++)
591 arrays[ndx] = ctx->vertexArrays.allocate();
592 }
593 }
594
glGenSamplers(GLsizei count,GLuint * samplers)595 GLW_APICALL void GLW_APIENTRY glGenSamplers (GLsizei count, GLuint* samplers)
596 {
597 Context* const ctx = getCurrentContext();
598
599 if (samplers)
600 {
601 for (int ndx = 0; ndx < count; ndx++)
602 samplers[ndx] = ctx->samplers.allocate();
603 }
604 }
605
glGenTransformFeedbacks(GLsizei n,GLuint * ids)606 GLW_APICALL void GLW_APIENTRY glGenTransformFeedbacks (GLsizei n, GLuint* ids)
607 {
608 Context* const ctx = getCurrentContext();
609
610 if (ids)
611 {
612 for (int ndx = 0; ndx < n; ndx++)
613 ids[ndx] = ctx->transformFeedbacks.allocate();
614 }
615 }
616
glGenProgramPipelines(GLsizei n,GLuint * pipelines)617 GLW_APICALL void GLW_APIENTRY glGenProgramPipelines (GLsizei n, GLuint* pipelines)
618 {
619 Context* const ctx = getCurrentContext();
620
621 if (pipelines)
622 {
623 for (int ndx = 0; ndx < n; ndx++)
624 pipelines[ndx] = ctx->programPipelines.allocate();
625 }
626 }
627
glMapBufferRange(GLenum target,GLintptr offset,GLsizeiptr length,GLbitfield access)628 GLW_APICALL GLvoid* GLW_APIENTRY glMapBufferRange (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access)
629 {
630 Context* const ctx = getCurrentContext();
631
632 DE_UNREF(target);
633 DE_UNREF(offset);
634 DE_UNREF(length);
635 DE_UNREF(access);
636
637 if (ctx->lastError == GL_NO_ERROR)
638 ctx->lastError = GL_INVALID_OPERATION;
639
640 return (GLvoid*)0;
641 }
642
glCheckFramebufferStatus(GLenum target)643 GLW_APICALL GLenum GLW_APIENTRY glCheckFramebufferStatus (GLenum target)
644 {
645 DE_UNREF(target);
646 return GL_FRAMEBUFFER_COMPLETE;
647 }
648
glReadPixels(GLint x,GLint y,GLsizei width,GLsizei height,GLenum format,GLenum type,GLvoid * pixels)649 GLW_APICALL void GLW_APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid* pixels)
650 {
651 DE_UNREF(x);
652 DE_UNREF(y);
653
654 Context* const ctx = getCurrentContext();
655 const tcu::Vec4 clearColor (0.0f, 0.0f, 0.0f, 1.0f); // black
656 const tcu::TextureFormat transferFormat = glu::mapGLTransferFormat(format, type);
657
658 // invalid formats
659 if (transferFormat.order == TextureFormat::CHANNELORDER_LAST || transferFormat.type == TextureFormat::CHANNELTYPE_LAST)
660 {
661 if (ctx->lastError == GL_NO_ERROR)
662 ctx->lastError = GL_INVALID_ENUM;
663 return;
664 }
665
666 // unsupported formats
667 if (!(format == GL_RGBA && type == GL_UNSIGNED_BYTE) &&
668 !(format == GL_RGBA_INTEGER && type == GL_INT) &&
669 !(format == GL_RGBA_INTEGER && type == GL_UNSIGNED_INT) &&
670 !(format == GL_RGBA && type == GL_FLOAT))
671 {
672 if (ctx->lastError == GL_NO_ERROR)
673 ctx->lastError = GL_INVALID_ENUM;
674 return;
675 }
676
677 // invalid arguments
678 if (width < 0 || height < 0)
679 {
680 if (ctx->lastError == GL_NO_ERROR)
681 ctx->lastError = GL_INVALID_OPERATION;
682 return;
683 }
684
685 // read to buffer
686 if (ctx->pixelPackBufferBufferBinding)
687 return;
688
689 // read to use pointer
690 {
691 const int targetRowLength = (ctx->pixelPackRowLength != 0) ? (ctx->pixelPackRowLength) : (width);
692 const int targetSkipRows = ctx->pixelPackSkipRows;
693 const int targetSkipPixels = ctx->pixelPackSkipPixels;
694 const int infiniteHeight = targetSkipRows + height; // as much as needed
695 const int targetRowPitch = (ctx->pixelPackAlignment == 0) ? (targetRowLength * transferFormat.getPixelSize()) : (deAlign32(targetRowLength * transferFormat.getPixelSize(), ctx->pixelPackAlignment));
696
697 // Create access to the whole copy target
698 const tcu::PixelBufferAccess targetAccess (transferFormat, targetRowLength, infiniteHeight, 1, targetRowPitch, 0, pixels);
699
700 // Select (skip_pixels, skip_rows, width, height) subregion from it. Clip to horizontal boundaries
701 const tcu::PixelBufferAccess targetRectAccess = tcu::getSubregion(targetAccess,
702 de::clamp(targetSkipPixels, 0, targetAccess.getWidth()-1),
703 targetSkipRows,
704 de::clamp(width, 0, de::max(0, targetAccess.getWidth() - targetSkipPixels)),
705 height);
706
707 tcu::clear(targetRectAccess, clearColor);
708 }
709 }
710
glBindBuffer(GLenum target,GLuint buffer)711 GLW_APICALL void GLW_APIENTRY glBindBuffer (GLenum target, GLuint buffer)
712 {
713 Context* const ctx = getCurrentContext();
714
715 if (target == GL_PIXEL_PACK_BUFFER)
716 ctx->pixelPackBufferBufferBinding = buffer;
717 }
718
glDeleteBuffers(GLsizei n,const GLuint * buffers)719 GLW_APICALL void GLW_APIENTRY glDeleteBuffers (GLsizei n, const GLuint* buffers)
720 {
721 Context* const ctx = getCurrentContext();
722
723 for (GLsizei ndx = 0; ndx < n; ++ndx)
724 if (buffers[ndx] && buffers[ndx] == ctx->pixelPackBufferBufferBinding)
725 ctx->pixelPackBufferBufferBinding = 0;
726 }
727
glGetAttribLocation(GLuint program,const GLchar * name)728 GLW_APICALL GLint GLW_APIENTRY glGetAttribLocation (GLuint program, const GLchar* name)
729 {
730 DE_UNREF(program);
731 return (GLint)(deStringHash(name) & 0x7FFFFFFF);
732 }
733
initFunctions(glw::Functions * gl)734 void initFunctions (glw::Functions* gl)
735 {
736 # include "tcuNullRenderContextInitFuncs.inl"
737 }
738
toRenderTarget(const RenderConfig & renderCfg)739 static tcu::RenderTarget toRenderTarget (const RenderConfig& renderCfg)
740 {
741 const int width = getValueOrDefault(renderCfg, &RenderConfig::width, 256);
742 const int height = getValueOrDefault(renderCfg, &RenderConfig::height, 256);
743 const int redBits = getValueOrDefault(renderCfg, &RenderConfig::redBits, 8);
744 const int greenBits = getValueOrDefault(renderCfg, &RenderConfig::greenBits, 8);
745 const int blueBits = getValueOrDefault(renderCfg, &RenderConfig::blueBits, 8);
746 const int alphaBits = getValueOrDefault(renderCfg, &RenderConfig::alphaBits, 8);
747 const int depthBits = getValueOrDefault(renderCfg, &RenderConfig::depthBits, 24);
748 const int stencilBits = getValueOrDefault(renderCfg, &RenderConfig::stencilBits, 8);
749 const int numSamples = getValueOrDefault(renderCfg, &RenderConfig::numSamples, 0);
750
751 return tcu::RenderTarget(width, height, tcu::PixelFormat(redBits, greenBits, blueBits, alphaBits), depthBits, stencilBits, numSamples);
752 }
753
RenderContext(const RenderConfig & renderCfg)754 RenderContext::RenderContext (const RenderConfig& renderCfg)
755 : m_ctxType (renderCfg.type)
756 , m_renderTarget (toRenderTarget(renderCfg))
757 , m_context (DE_NULL)
758 {
759 m_context = new Context(m_ctxType);
760
761 initFunctions(&m_functions);
762 setCurrentContext(m_context);
763 }
764
~RenderContext(void)765 RenderContext::~RenderContext (void)
766 {
767 setCurrentContext(DE_NULL);
768 delete m_context;
769 }
770
postIterate(void)771 void RenderContext::postIterate (void)
772 {
773 }
774
makeCurrent(void)775 void RenderContext::makeCurrent (void)
776 {
777 }
778
779 } // null
780 } // tcu
781