1// Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
2// Copyright (C) 2016 Svenn-Arne Dragly.
3// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
4
5#include "graphicshelperes3_p.h"
6#include <private/attachmentpack_p.h>
7#include <qgraphicsutils_p.h>
8#include <logging_p.h>
9#include <QOpenGLExtraFunctions>
10
11QT_BEGIN_NAMESPACE
12
13// ES 3.0+
14#ifndef GL_SAMPLER_3D
15#define GL_SAMPLER_3D 0x8B5F
16#endif
17#ifndef GL_SAMPLER_2D_SHADOW
18#define GL_SAMPLER_2D_SHADOW 0x8B62
19#endif
20#ifndef GL_SAMPLER_CUBE_SHADOW
21#define GL_SAMPLER_CUBE_SHADOW 0x8DC5
22#endif
23#ifndef GL_SAMPLER_2D_ARRAY
24#define GL_SAMPLER_2D_ARRAY 0x8DC1
25#endif
26#ifndef GL_SAMPLER_2D_ARRAY_SHADOW
27#define GL_SAMPLER_2D_ARRAY_SHADOW 0x8DC4
28#endif
29#ifndef GL_FLOAT_MAT2x3
30#define GL_FLOAT_MAT2x3 0x8B65
31#endif
32#ifndef GL_FLOAT_MAT2x4
33#define GL_FLOAT_MAT2x4 0x8B66
34#endif
35#ifndef GL_FLOAT_MAT3x2
36#define GL_FLOAT_MAT3x2 0x8B67
37#endif
38#ifndef GL_FLOAT_MAT3x4
39#define GL_FLOAT_MAT3x4 0x8B68
40#endif
41#ifndef GL_FLOAT_MAT4x2
42#define GL_FLOAT_MAT4x2 0x8B69
43#endif
44#ifndef GL_FLOAT_MAT4x3
45#define GL_FLOAT_MAT4x3 0x8B6A
46#endif
47#ifndef GL_UNSIGNED_INT_VEC2
48#define GL_UNSIGNED_INT_VEC2 0x8DC6
49#endif
50#ifndef GL_UNSIGNED_INT_VEC3
51#define GL_UNSIGNED_INT_VEC3 0x8DC7
52#endif
53#ifndef GL_UNSIGNED_INT_VEC4
54#define GL_UNSIGNED_INT_VEC4 0x8DC8
55#endif
56#ifndef GL_INT_SAMPLER_2D
57#define GL_INT_SAMPLER_2D 0x8DCA
58#endif
59#ifndef GL_INT_SAMPLER_3D
60#define GL_INT_SAMPLER_3D 0x8DCB
61#endif
62#ifndef GL_INT_SAMPLER_CUBE
63#define GL_INT_SAMPLER_CUBE 0x8DCC
64#endif
65#ifndef GL_INT_SAMPLER_2D_ARRAY
66#define GL_INT_SAMPLER_2D_ARRAY 0x8DCF
67#endif
68#ifndef GL_UNSIGNED_INT_SAMPLER_2D
69#define GL_UNSIGNED_INT_SAMPLER_2D 0x8DD2
70#endif
71#ifndef GL_UNSIGNED_INT_SAMPLER_3D
72#define GL_UNSIGNED_INT_SAMPLER_3D 0x8DD3
73#endif
74#ifndef GL_UNSIGNED_INT_SAMPLER_CUBE
75#define GL_UNSIGNED_INT_SAMPLER_CUBE 0x8DD4
76#endif
77#ifndef GL_UNSIGNED_INT_SAMPLER_2D_ARRAY
78#define GL_UNSIGNED_INT_SAMPLER_2D_ARRAY 0x8DD7
79#endif
80
81#ifndef GL_ACTIVE_UNIFORM_BLOCKS
82#define GL_ACTIVE_UNIFORM_BLOCKS 0x8A36
83#endif
84#ifndef GL_UNIFORM_BLOCK_INDEX
85#define GL_UNIFORM_BLOCK_INDEX 0x8A3A
86#endif
87#ifndef GL_UNIFORM_OFFSET
88#define GL_UNIFORM_OFFSET 0x8A3B
89#endif
90#ifndef GL_UNIFORM_ARRAY_STRIDE
91#define GL_UNIFORM_ARRAY_STRIDE 0x8A3C
92#endif
93#ifndef GL_UNIFORM_MATRIX_STRIDE
94#define GL_UNIFORM_MATRIX_STRIDE 0x8A3D
95#endif
96#ifndef GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS
97#define GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS 0x8A42
98#endif
99#ifndef GL_UNIFORM_BLOCK_BINDING
100#define GL_UNIFORM_BLOCK_BINDING 0x8A3F
101#endif
102#ifndef GL_UNIFORM_BLOCK_DATA_SIZE
103#define GL_UNIFORM_BLOCK_DATA_SIZE 0x8A40
104#endif
105
106#ifndef GL_DRAW_FRAMEBUFFER
107#define GL_DRAW_FRAMEBUFFER 0x8CA9
108#endif
109
110#ifndef GL_READ_FRAMEBUFFER
111#define GL_READ_FRAMEBUFFER 0x8CA8
112#endif
113
114#ifndef GL_SIGNALED
115#define GL_SIGNALED 0x9119
116#endif
117
118#ifndef GL_SYNC_STATUS
119#define GL_SYNC_STATUS 0x9114
120#endif
121
122#ifndef GL_TIMEOUT_IGNORED
123#define GL_TIMEOUT_IGNORED 0xFFFFFFFFFFFFFFFFull
124#endif
125
126#ifndef GL_SYNC_GPU_COMMANDS_COMPLETE
127#define GL_SYNC_GPU_COMMANDS_COMPLETE 0x9117
128#endif
129
130#ifndef GL_SYNC_FLUSH_COMMANDS_BIT
131#define GL_SYNC_FLUSH_COMMANDS_BIT 0x00000001
132#endif
133
134namespace Qt3DRender {
135namespace Render {
136namespace OpenGL {
137
138GraphicsHelperES3::GraphicsHelperES3()
139{
140}
141
142GraphicsHelperES3::~GraphicsHelperES3()
143{
144}
145
146void GraphicsHelperES3::initializeHelper(QOpenGLContext *context,
147 QAbstractOpenGLFunctions *functions)
148{
149 GraphicsHelperES2::initializeHelper(context, functions);
150 m_extraFuncs = context->extraFunctions();
151 Q_ASSERT(m_extraFuncs);
152}
153
154void GraphicsHelperES3::drawElementsInstancedBaseVertexBaseInstance(GLenum primitiveType,
155 GLsizei primitiveCount,
156 GLint indexType,
157 void *indices,
158 GLsizei instances,
159 GLint baseVertex,
160 GLint baseInstance)
161{
162 if (baseInstance != 0)
163 qWarning() << "glDrawElementsInstancedBaseVertexBaseInstance is not supported with OpenGL ES 3";
164
165 if (baseVertex != 0)
166 qWarning() << "glDrawElementsInstancedBaseVertex is not supported with OpenGL ES 3";
167
168 m_extraFuncs->glDrawElementsInstanced(mode: primitiveType,
169 count: primitiveCount,
170 type: indexType,
171 indices,
172 instancecount: instances);
173}
174
175void GraphicsHelperES3::vertexAttribDivisor(GLuint index, GLuint divisor)
176{
177 m_extraFuncs->glVertexAttribDivisor(index, divisor);
178}
179
180void GraphicsHelperES3::vertexAttributePointer(GLenum shaderDataType,
181 GLuint index,
182 GLint size,
183 GLenum type,
184 GLboolean normalized,
185 GLsizei stride,
186 const GLvoid *pointer)
187{
188 switch (shaderDataType) {
189 case GL_FLOAT:
190 case GL_FLOAT_VEC2:
191 case GL_FLOAT_VEC3:
192 case GL_FLOAT_VEC4:
193 case GL_FLOAT_MAT2:
194 case GL_FLOAT_MAT2x3:
195 case GL_FLOAT_MAT2x4:
196 case GL_FLOAT_MAT3:
197 case GL_FLOAT_MAT3x2:
198 case GL_FLOAT_MAT3x4:
199 case GL_FLOAT_MAT4x2:
200 case GL_FLOAT_MAT4x3:
201 case GL_FLOAT_MAT4:
202 m_funcs->glVertexAttribPointer(indx: index, size, type, normalized, stride, ptr: pointer);
203 break;
204
205 case GL_INT:
206 case GL_INT_VEC2:
207 case GL_INT_VEC3:
208 case GL_INT_VEC4:
209 case GL_UNSIGNED_INT:
210 case GL_UNSIGNED_INT_VEC2:
211 case GL_UNSIGNED_INT_VEC3:
212 case GL_UNSIGNED_INT_VEC4:
213 m_extraFuncs->glVertexAttribIPointer(index, size, type, stride, pointer);
214 break;
215
216 default:
217 qCWarning(Rendering) << "vertexAttribPointer: Unhandled type";
218 Q_UNREACHABLE();
219 }
220}
221
222void GraphicsHelperES3::drawArraysInstanced(GLenum primitiveType, GLint first, GLsizei count, GLsizei instances)
223{
224 m_extraFuncs->glDrawArraysInstanced(mode: primitiveType,
225 first,
226 count,
227 instancecount: instances);
228}
229
230void GraphicsHelperES3::drawArraysInstancedBaseInstance(GLenum primitiveType, GLint first, GLsizei count, GLsizei instances, GLsizei baseInstance)
231{
232 if (baseInstance != 0)
233 qWarning() << "glDrawElementsInstancedBaseVertexBaseInstance is not supported with OpenGL ES 3";
234
235 m_extraFuncs->glDrawArraysInstanced(mode: primitiveType,
236 first,
237 count,
238 instancecount: instances);
239}
240
241void GraphicsHelperES3::readBuffer(GLenum mode)
242{
243 m_extraFuncs->glReadBuffer(src: mode);
244}
245
246void GraphicsHelperES3::drawBuffer(GLenum mode)
247{
248 Q_UNUSED(mode);
249 qWarning() << "glDrawBuffer is not supported with OpenGL ES 3";
250}
251
252void GraphicsHelperES3::bindFrameBufferAttachment(QOpenGLTexture *texture, const Attachment &attachment)
253{
254 GLenum attr = GL_COLOR_ATTACHMENT0;
255
256 if (attachment.m_point <= QRenderTargetOutput::Color15)
257 attr = GL_COLOR_ATTACHMENT0 + attachment.m_point;
258 else if (attachment.m_point == QRenderTargetOutput::Depth)
259 attr = GL_DEPTH_ATTACHMENT;
260 else if (attachment.m_point == QRenderTargetOutput::Stencil)
261 attr = GL_STENCIL_ATTACHMENT;
262 else
263 qCritical() << "Unsupported FBO attachment OpenGL ES 3.0";
264
265 const QOpenGLTexture::Target target = texture->target();
266
267 if (target == QOpenGLTexture::TargetCubeMap && attachment.m_face == QAbstractTexture::AllFaces) {
268 qWarning() << "OpenGL ES 3.0 doesn't handle attaching all the faces of a cube map texture at once to an FBO";
269 return;
270 }
271
272 texture->bind();
273 if (target == QOpenGLTexture::Target2D)
274 m_funcs->glFramebufferTexture2D(GL_FRAMEBUFFER, attachment: attr, textarget: target, texture: texture->textureId(), level: attachment.m_mipLevel);
275 else if (target == QOpenGLTexture::TargetCubeMap)
276 m_funcs->glFramebufferTexture2D(GL_FRAMEBUFFER, attachment: attr, textarget: attachment.m_face, texture: texture->textureId(), level: attachment.m_mipLevel);
277 else
278 qCritical() << "Unsupported Texture FBO attachment format";
279 texture->release();
280}
281
282void GraphicsHelperES3::bindFrameBufferObject(GLuint frameBufferId, GraphicsHelperInterface::FBOBindMode mode)
283{
284 switch (mode) {
285 case FBODraw:
286 m_funcs->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer: frameBufferId);
287 return;
288 case FBORead:
289 m_funcs->glBindFramebuffer(GL_READ_FRAMEBUFFER, framebuffer: frameBufferId);
290 return;
291 case FBOReadAndDraw:
292 default:
293 m_funcs->glBindFramebuffer(GL_FRAMEBUFFER, framebuffer: frameBufferId);
294 return;
295 }
296}
297
298bool GraphicsHelperES3::supportsFeature(GraphicsHelperInterface::Feature feature) const
299{
300 switch (feature) {
301 case RenderBufferDimensionRetrieval:
302 case MRT:
303 case BlitFramebuffer:
304 case UniformBufferObject:
305 case MapBuffer:
306 case Fences:
307 return true;
308 default:
309 return false;
310 }
311}
312
313void GraphicsHelperES3::drawBuffers(GLsizei n, const GLenum *bufs)
314{
315 m_extraFuncs->glDrawBuffers(n, bufs);
316}
317
318UniformType GraphicsHelperES3::uniformTypeFromGLType(GLenum glType)
319{
320 switch (glType) {
321 case GL_SAMPLER_3D:
322 case GL_SAMPLER_2D_SHADOW:
323 case GL_SAMPLER_CUBE_SHADOW:
324 case GL_SAMPLER_2D_ARRAY:
325 case GL_SAMPLER_2D_ARRAY_SHADOW:
326 return UniformType::Sampler;
327 default:
328 return GraphicsHelperES2::uniformTypeFromGLType(glType);
329 }
330}
331
332uint GraphicsHelperES3::uniformByteSize(const ShaderUniform &description)
333{
334 uint rawByteSize = 0;
335 int arrayStride = qMax(a: description.m_arrayStride, b: 0);
336 int matrixStride = qMax(a: description.m_matrixStride, b: 0);
337
338 switch (description.m_type) {
339
340 case GL_FLOAT_VEC2:
341 case GL_INT_VEC2:
342 case GL_UNSIGNED_INT_VEC2:
343 rawByteSize = 8;
344 break;
345
346 case GL_FLOAT_VEC3:
347 case GL_INT_VEC3:
348 case GL_UNSIGNED_INT_VEC3:
349 rawByteSize = 12;
350 break;
351
352 case GL_FLOAT_VEC4:
353 case GL_INT_VEC4:
354 case GL_UNSIGNED_INT_VEC4:
355 rawByteSize = 16;
356 break;
357
358 case GL_FLOAT_MAT2:
359 rawByteSize = matrixStride ? 2 * matrixStride : 16;
360 break;
361
362 case GL_FLOAT_MAT2x4:
363 rawByteSize = matrixStride ? 2 * matrixStride : 32;
364 break;
365
366 case GL_FLOAT_MAT4x2:
367 rawByteSize = matrixStride ? 4 * matrixStride : 32;
368 break;
369
370 case GL_FLOAT_MAT3:
371 rawByteSize = matrixStride ? 3 * matrixStride : 36;
372 break;
373
374 case GL_FLOAT_MAT2x3:
375 rawByteSize = matrixStride ? 2 * matrixStride : 24;
376 break;
377
378 case GL_FLOAT_MAT3x2:
379 rawByteSize = matrixStride ? 3 * matrixStride : 24;
380 break;
381
382 case GL_FLOAT_MAT4:
383 rawByteSize = matrixStride ? 4 * matrixStride : 64;
384 break;
385
386 case GL_FLOAT_MAT4x3:
387 rawByteSize = matrixStride ? 4 * matrixStride : 48;
388 break;
389
390 case GL_FLOAT_MAT3x4:
391 rawByteSize = matrixStride ? 3 * matrixStride : 48;
392 break;
393
394 case GL_BOOL:
395 rawByteSize = 1;
396 break;
397
398 case GL_BOOL_VEC2:
399 rawByteSize = 2;
400 break;
401
402 case GL_BOOL_VEC3:
403 rawByteSize = 3;
404 break;
405
406 case GL_BOOL_VEC4:
407 rawByteSize = 4;
408 break;
409
410 case GL_INT:
411 case GL_FLOAT:
412 case GL_UNSIGNED_INT:
413 case GL_SAMPLER_2D:
414 case GL_SAMPLER_3D:
415 case GL_SAMPLER_CUBE:
416 case GL_INT_SAMPLER_2D:
417 case GL_INT_SAMPLER_3D:
418 case GL_INT_SAMPLER_CUBE:
419 case GL_UNSIGNED_INT_SAMPLER_2D:
420 case GL_UNSIGNED_INT_SAMPLER_3D:
421 case GL_UNSIGNED_INT_SAMPLER_CUBE:
422 case GL_SAMPLER_2D_SHADOW:
423 case GL_SAMPLER_CUBE_SHADOW:
424 case GL_SAMPLER_2D_ARRAY:
425 case GL_INT_SAMPLER_2D_ARRAY:
426 case GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
427 case GL_SAMPLER_2D_ARRAY_SHADOW:
428 rawByteSize = 4;
429 break;
430 }
431
432 return arrayStride ? rawByteSize * arrayStride : rawByteSize;
433}
434
435void *GraphicsHelperES3::fenceSync()
436{
437 return m_extraFuncs->glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, flags: 0);
438}
439
440void GraphicsHelperES3::clientWaitSync(void *sync, GLuint64 nanoSecTimeout)
441{
442 m_extraFuncs->glClientWaitSync(sync: static_cast<GLsync>(sync), GL_SYNC_FLUSH_COMMANDS_BIT, timeout: nanoSecTimeout);
443}
444
445void GraphicsHelperES3::waitSync(void *sync)
446{
447 m_extraFuncs->glWaitSync(sync: static_cast<GLsync>(sync), flags: 0, GL_TIMEOUT_IGNORED);
448}
449
450bool GraphicsHelperES3::wasSyncSignaled(void *sync)
451{
452 GLint v;
453 m_extraFuncs->glGetSynciv(sync: static_cast<GLsync>(sync),
454 GL_SYNC_STATUS,
455 bufSize: sizeof(v),
456 length: nullptr,
457 values: &v);
458 return v == GL_SIGNALED;
459}
460
461void GraphicsHelperES3::deleteSync(void *sync)
462{
463 m_extraFuncs->glDeleteSync(sync: static_cast<GLsync>(sync));
464}
465
466void GraphicsHelperES3::blitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter)
467{
468 m_extraFuncs->glBlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
469}
470
471void GraphicsHelperES3::bindBufferBase(GLenum target, GLuint index, GLuint buffer)
472{
473 m_extraFuncs->glBindBufferBase(target, index, buffer);
474}
475
476bool GraphicsHelperES3::frameBufferNeedsRenderBuffer(const Attachment &attachment)
477{
478 // Use a renderbuffer for combined depth+stencil attachments since this is
479 // problematic before GLES 3.2. Keep using textures for everything else.
480 return attachment.m_point == QRenderTargetOutput::DepthStencil;
481}
482
483void GraphicsHelperES3::bindUniformBlock(GLuint programId, GLuint uniformBlockIndex, GLuint uniformBlockBinding)
484{
485 m_extraFuncs->glUniformBlockBinding(program: programId, uniformBlockIndex, uniformBlockBinding);
486}
487
488void GraphicsHelperES3::buildUniformBuffer(const QVariant &v, const ShaderUniform &description, QByteArray &buffer)
489{
490 char *bufferData = buffer.data();
491
492 switch (description.m_type) {
493
494 case GL_FLOAT: {
495 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 1);
496 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 1);
497 break;
498 }
499
500 case GL_FLOAT_VEC2: {
501 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 2);
502 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 2);
503 break;
504 }
505
506 case GL_FLOAT_VEC3: {
507 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 3);
508 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 3);
509 break;
510 }
511
512 case GL_FLOAT_VEC4: {
513 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 4);
514 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 4);
515 break;
516 }
517
518 case GL_FLOAT_MAT2: {
519 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 4);
520 QGraphicsUtils::fillDataMatrixArray(buffer: bufferData, data, description, cols: 2, rows: 2);
521 break;
522 }
523
524 case GL_FLOAT_MAT2x3: {
525 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 6);
526 QGraphicsUtils::fillDataMatrixArray(buffer: bufferData, data, description, cols: 2, rows: 3);
527 break;
528 }
529
530 case GL_FLOAT_MAT2x4: {
531 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 8);
532 QGraphicsUtils::fillDataMatrixArray(buffer: bufferData, data, description, cols: 2, rows: 4);
533 break;
534 }
535
536 case GL_FLOAT_MAT3: {
537 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 9);
538 QGraphicsUtils::fillDataMatrixArray(buffer: bufferData, data, description, cols: 3, rows: 3);
539 break;
540 }
541
542 case GL_FLOAT_MAT3x2: {
543 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 6);
544 QGraphicsUtils::fillDataMatrixArray(buffer: bufferData, data, description, cols: 3, rows: 2);
545 break;
546 }
547
548 case GL_FLOAT_MAT3x4: {
549 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 12);
550 QGraphicsUtils::fillDataMatrixArray(buffer: bufferData, data, description, cols: 3, rows: 4);
551 break;
552 }
553
554 case GL_FLOAT_MAT4: {
555 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 16);
556 QGraphicsUtils::fillDataMatrixArray(buffer: bufferData, data, description, cols: 4, rows: 4);
557 break;
558 }
559
560 case GL_FLOAT_MAT4x2: {
561 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 8);
562 QGraphicsUtils::fillDataMatrixArray(buffer: bufferData, data, description, cols: 4, rows: 2);
563 break;
564 }
565
566 case GL_FLOAT_MAT4x3: {
567 const GLfloat *data = QGraphicsUtils::valueArrayFromVariant<GLfloat>(v, count: description.m_size, tupleSize: 12);
568 QGraphicsUtils::fillDataMatrixArray(buffer: bufferData, data, description, cols: 4, rows: 3);
569 break;
570 }
571
572 case GL_INT: {
573 const GLint *data = QGraphicsUtils::valueArrayFromVariant<GLint>(v, count: description.m_size, tupleSize: 1);
574 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 1);
575 break;
576 }
577
578 case GL_INT_VEC2: {
579 const GLint *data = QGraphicsUtils::valueArrayFromVariant<GLint>(v, count: description.m_size, tupleSize: 2);
580 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 2);
581 break;
582 }
583
584 case GL_INT_VEC3: {
585 const GLint *data = QGraphicsUtils::valueArrayFromVariant<GLint>(v, count: description.m_size, tupleSize: 3);
586 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 3);
587 break;
588 }
589
590 case GL_INT_VEC4: {
591 const GLint *data = QGraphicsUtils::valueArrayFromVariant<GLint>(v, count: description.m_size, tupleSize: 4);
592 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 4);
593 break;
594 }
595
596 case GL_UNSIGNED_INT: {
597 const GLuint *data = QGraphicsUtils::valueArrayFromVariant<GLuint>(v, count: description.m_size, tupleSize: 1);
598 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 1);
599 break;
600 }
601
602 case GL_UNSIGNED_INT_VEC2: {
603 const GLuint *data = QGraphicsUtils::valueArrayFromVariant<GLuint>(v, count: description.m_size, tupleSize: 2);
604 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 2);
605 break;
606 }
607
608 case GL_UNSIGNED_INT_VEC3: {
609 const GLuint *data = QGraphicsUtils::valueArrayFromVariant<GLuint>(v, count: description.m_size, tupleSize: 3);
610 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 3);
611 break;
612 }
613
614 case GL_UNSIGNED_INT_VEC4: {
615 const GLuint *data = QGraphicsUtils::valueArrayFromVariant<GLuint>(v, count: description.m_size, tupleSize: 4);
616 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 4);
617 break;
618 }
619
620 case GL_BOOL: {
621 const GLboolean *data = QGraphicsUtils::valueArrayFromVariant<GLboolean>(v, count: description.m_size, tupleSize: 1);
622 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 1);
623 break;
624 }
625
626 case GL_BOOL_VEC2: {
627 const GLboolean *data = QGraphicsUtils::valueArrayFromVariant<GLboolean>(v, count: description.m_size, tupleSize: 2);
628 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 2);
629 break;
630 }
631
632 case GL_BOOL_VEC3: {
633 const GLboolean *data = QGraphicsUtils::valueArrayFromVariant<GLboolean>(v, count: description.m_size, tupleSize: 3);
634 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 3);
635 break;
636 }
637
638 case GL_BOOL_VEC4: {
639 const GLboolean *data = QGraphicsUtils::valueArrayFromVariant<GLboolean>(v, count: description.m_size, tupleSize: 4);
640 QGraphicsUtils::fillDataArray(buffer: bufferData, data, description, tupleSize: 4);
641 break;
642 }
643
644 // note: only GLES 3.0 supported types, not the same as OpenGL proper
645 // (also, no MS samplers before ES 3.1)
646 case GL_SAMPLER_2D:
647 case GL_SAMPLER_3D:
648 case GL_SAMPLER_CUBE:
649 case GL_INT_SAMPLER_2D:
650 case GL_INT_SAMPLER_3D:
651 case GL_INT_SAMPLER_CUBE:
652 case GL_UNSIGNED_INT_SAMPLER_2D:
653 case GL_UNSIGNED_INT_SAMPLER_3D:
654 case GL_UNSIGNED_INT_SAMPLER_CUBE:
655 case GL_SAMPLER_2D_SHADOW:
656 case GL_SAMPLER_CUBE_SHADOW:
657 case GL_SAMPLER_2D_ARRAY:
658 case GL_INT_SAMPLER_2D_ARRAY:
659 case GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
660 case GL_SAMPLER_2D_ARRAY_SHADOW:
661 {
662 Q_ASSERT(description.m_size == 1);
663 int value = v.toInt();
664 QGraphicsUtils::fillDataArray<GLint>(buffer: bufferData, data: &value, description, tupleSize: 1);
665 break;
666 }
667
668 default:
669 qWarning() << Q_FUNC_INFO << "unsupported uniform type:" << description.m_type << "for " << description.m_name;
670 break;
671 }
672}
673
674char *GraphicsHelperES3::mapBuffer(GLenum target, GLsizeiptr size)
675{
676 return static_cast<char*>(m_extraFuncs->glMapBufferRange(target, offset: 0, length: size, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT));
677}
678
679GLboolean GraphicsHelperES3::unmapBuffer(GLenum target)
680{
681 return m_extraFuncs->glUnmapBuffer(target);
682}
683
684std::vector<ShaderUniform> GraphicsHelperES3::programUniformsAndLocations(GLuint programId)
685{
686 std::vector<ShaderUniform> uniforms;
687
688 GLint nbrActiveUniforms = 0;
689 m_funcs->glGetProgramiv(program: programId, GL_ACTIVE_UNIFORMS, params: &nbrActiveUniforms);
690 uniforms.reserve(n: nbrActiveUniforms);
691 char uniformName[256];
692 for (GLint i = 0; i < nbrActiveUniforms; i++) {
693 ShaderUniform uniform;
694 GLsizei uniformNameLength = 0;
695 // Size is 1 for scalar and more for struct or arrays
696 // Type is the GL Type
697 m_funcs->glGetActiveUniform(program: programId, index: i, bufsize: sizeof(uniformName) - 1, length: &uniformNameLength,
698 size: &uniform.m_size, type: &uniform.m_type, name: uniformName);
699 uniformName[sizeof(uniformName) - 1] = '\0';
700 uniform.m_location = m_funcs->glGetUniformLocation(program: programId, name: uniformName);
701 uniform.m_name = QString::fromUtf8(utf8: uniformName, size: uniformNameLength);
702 m_extraFuncs->glGetActiveUniformsiv(program: programId, uniformCount: 1, uniformIndices: (GLuint*)&i, GL_UNIFORM_BLOCK_INDEX, params: &uniform.m_blockIndex);
703 m_extraFuncs->glGetActiveUniformsiv(program: programId, uniformCount: 1, uniformIndices: (GLuint*)&i, GL_UNIFORM_OFFSET, params: &uniform.m_offset);
704 m_extraFuncs->glGetActiveUniformsiv(program: programId, uniformCount: 1, uniformIndices: (GLuint*)&i, GL_UNIFORM_ARRAY_STRIDE, params: &uniform.m_arrayStride);
705 m_extraFuncs->glGetActiveUniformsiv(program: programId, uniformCount: 1, uniformIndices: (GLuint*)&i, GL_UNIFORM_MATRIX_STRIDE, params: &uniform.m_matrixStride);
706 uniform.m_rawByteSize = uniformByteSize(description: uniform);
707 uniforms.push_back(x: uniform);
708 qCDebug(Rendering) << uniform.m_name << "size" << uniform.m_size
709 << " offset" << uniform.m_offset
710 << " rawSize" << uniform.m_rawByteSize;
711 }
712
713 return uniforms;
714}
715
716std::vector<ShaderUniformBlock> GraphicsHelperES3::programUniformBlocks(GLuint programId)
717{
718 std::vector<ShaderUniformBlock> blocks;
719 GLint nbrActiveUniformsBlocks = 0;
720 m_extraFuncs->glGetProgramiv(program: programId, GL_ACTIVE_UNIFORM_BLOCKS, params: &nbrActiveUniformsBlocks);
721 blocks.reserve(n: nbrActiveUniformsBlocks);
722 for (GLint i = 0; i < nbrActiveUniformsBlocks; i++) {
723 QByteArray uniformBlockName(256, '\0');
724 GLsizei length = 0;
725 ShaderUniformBlock uniformBlock;
726 m_extraFuncs->glGetActiveUniformBlockName(program: programId, uniformBlockIndex: i, bufSize: 256, length: &length, uniformBlockName: uniformBlockName.data());
727 uniformBlock.m_name = QString::fromUtf8(ba: uniformBlockName.left(n: length));
728 uniformBlock.m_index = i;
729 m_extraFuncs->glGetActiveUniformBlockiv(program: programId, uniformBlockIndex: i, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, params: &uniformBlock.m_activeUniformsCount);
730 m_extraFuncs->glGetActiveUniformBlockiv(program: programId, uniformBlockIndex: i, GL_UNIFORM_BLOCK_BINDING, params: &uniformBlock.m_binding);
731 m_extraFuncs->glGetActiveUniformBlockiv(program: programId, uniformBlockIndex: i, GL_UNIFORM_BLOCK_DATA_SIZE, params: &uniformBlock.m_size);
732 blocks.push_back(x: uniformBlock);
733 }
734 return blocks;
735}
736
737} // namespace OpenGL
738} // namespace Render
739} // namespace Qt3DRender
740
741QT_END_NAMESPACE
742

source code of qt3d/src/plugins/renderers/opengl/graphicshelpers/graphicshelperes3.cpp