qrhigles2.cpp 83.2 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt RHI module
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qrhigles2_p.h"
#include <QWindow>
#include <QOffscreenSurface>
#include <QOpenGLContext>
Laszlo Agocs's avatar
Laszlo Agocs committed
41
#include <QtGui/private/qopenglextensions_p.h>
42
43
44
45
46
#include <qmath.h>

QT_BEGIN_NAMESPACE

/*
Laszlo Agocs's avatar
Laszlo Agocs committed
47
48
49
50
51
52
53
54
55
56
57
58
  OpenGL ES 2.0 (3.0) + GLSL 100/120 backend. Binding vertex attribute
  locations and decomposing uniform buffers into uniforms (as expected by the
  GLSL 1xx shader generated by SPIRV-Cross) are handled transparently to the
  application via the reflection data (QShaderDescription). Textures and
  buffers feature no special logic, it's all just glTexSubImage2D and
  glBufferSubData (with "dynamic" buffers set to GL_DYNAMIC_DRAW). The
  swapchain and the associated renderbuffer for depth-stencil will be dummies
  since we have no control over the underlying buffers here. It is up to the
  application to create the context and window with the appropriate
  QSurfaceFormat when it comes to depth/stencil and MSAA. While we try to keep
  this backend clean GLES 2.0, some GL(ES) 3.0 features like multisample
  renderbuffers and blits are used when available.
59
60
*/

Laszlo Agocs's avatar
Laszlo Agocs committed
61
62
63
/*!
    \class QRhiGles2InitParams
    \inmodule QtRhi
Laszlo Agocs's avatar
Laszlo Agocs committed
64
65
66
67
68
69
70
    \brief OpenGL specific initialization parameters.

    An OpenGL-based QRhi needs an already initialized QOpenGLContext and
    QOffscreenSurface. Additionally, while optional, it is recommended that the
    QWindow the first QRhiSwapChain will target is passed in as well.

    \badcode
Laszlo Agocs's avatar
Laszlo Agocs committed
71
72
73
74
75
        QSurfaceFormat format;
        format.setDepthBufferSize(24);
        format.setStencilBufferSize(8);
        QSurfaceFormat::setDefaultFormat(format);

Laszlo Agocs's avatar
Laszlo Agocs committed
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
        context = new QOpenGLContext;
        if (!context->create())
            qFatal("Failed to get OpenGL context");

        fallbackSurface = new QOffscreenSurface;
        fallbackSurface->setFormat(context->format());
        fallbackSurface->create();

        QRhiGles2InitParams params;
        params.context = context;
        params.window = window;
        params.fallbackSurface = fallbackSurface;
        rhi = QRhi::create(QRhi::OpenGLES2, &params);
    \endcode

91
92
    The example here shows the creation of the context and fallback surface as
    well. Watch out for the fact that, unlike QOpenGLContext, a
Laszlo Agocs's avatar
Laszlo Agocs committed
93
94
    QOffscreenSurface can only be created on the gui/main thread.

95
96
    The QRhi does not take ownership of any of the external objects.

Laszlo Agocs's avatar
Laszlo Agocs committed
97
98
99
    \note QRhiSwapChain can only target QWindow instances that have their
    surface type set to QSurface::OpenGLSurface.

100
101
102
103
    \note A QRhi instance can be created and used on any thread but all usage
    must be limited to that one single thread. When it comes to native objects,
    such as OpenGL contexts, passed in in QRhiInitParams, it is up to the
    application to ensure they are not misused by other threads.
Laszlo Agocs's avatar
Laszlo Agocs committed
104
105
106
107
108
 */

/*!
    \class QRhiGles2NativeHandles
    \inmodule QtRhi
Laszlo Agocs's avatar
Laszlo Agocs committed
109
    \brief Holds the OpenGL context used by the QRhi.
Laszlo Agocs's avatar
Laszlo Agocs committed
110
111
112
113
114
 */

/*!
    \class QRhiGles2TextureNativeHandles
    \inmodule QtRhi
Laszlo Agocs's avatar
Laszlo Agocs committed
115
    \brief Holds the OpenGL texture object that is backing a QRhiTexture instance.
Laszlo Agocs's avatar
Laszlo Agocs committed
116
117
 */

118
QRhiGles2::QRhiGles2(QRhiInitParams *params)
119
    : ofr(this)
120
121
122
123
124
125
126
{
    QRhiGles2InitParams *glparams = static_cast<QRhiGles2InitParams *>(params);
    ctx = glparams->context;
    maybeWindow = glparams->window; // may be null
    fallbackSurface = glparams->fallbackSurface;
}

127
bool QRhiGles2::ensureContext(QSurface *surface) const
128
129
130
131
132
133
134
135
136
137
138
139
140
{
    bool nativeWindowGone = false;
    if (surface && surface->surfaceClass() == QSurface::Window && !surface->surfaceHandle()) {
        surface = fallbackSurface;
        nativeWindowGone = true;
    }

    if (!surface)
        surface = fallbackSurface;

    if (buffersSwapped)
        buffersSwapped = false;
    else if (!nativeWindowGone && QOpenGLContext::currentContext() == ctx && (surface == fallbackSurface || ctx->surface() == surface))
141
        return true;
142

143
    if (!ctx->makeCurrent(surface)) {
144
        qWarning("QRhiGles2: Failed to make context current. Expect bad things to happen.");
145
146
147
148
        return false;
    }

    return true;
149
150
}

151
bool QRhiGles2::create(QRhi::Flags flags)
152
{
153
    Q_UNUSED(flags);
154
155
156
    Q_ASSERT(ctx);
    Q_ASSERT(fallbackSurface);

157
    if (!ensureContext(maybeWindow ? maybeWindow : fallbackSurface)) // see 'window' discussion in QRhiGles2InitParams comments
158
        return false;
159

Laszlo Agocs's avatar
Laszlo Agocs committed
160
    f = static_cast<QOpenGLExtensions *>(ctx->extraFunctions());
161
162
163
164
165
166

    const char *vendor = reinterpret_cast<const char *>(f->glGetString(GL_VENDOR));
    const char *renderer = reinterpret_cast<const char *>(f->glGetString(GL_RENDERER));
    const char *version = reinterpret_cast<const char *>(f->glGetString(GL_VERSION));
    if (vendor && renderer && version)
        qDebug("OpenGL VENDOR: %s RENDERER: %s VERSION: %s", vendor, renderer, version);
167
168
169
170
171
172

    GLint n = 0;
    f->glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &n);
    supportedCompressedFormats.resize(n);
    if (n > 0)
        f->glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, supportedCompressedFormats.data());
Laszlo Agocs's avatar
Laszlo Agocs committed
173
174
175

    caps.msaaRenderBuffer = f->hasOpenGLExtension(QOpenGLExtensions::FramebufferMultisample)
            && f->hasOpenGLExtension(QOpenGLExtensions::FramebufferBlit);
176

177
178
    f->glGetIntegerv(GL_MAX_TEXTURE_SIZE, &caps.maxTextureSize);

179
180
    nativeHandlesStruct.context = ctx;

181
    return true;
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
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
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
}

void QRhiGles2::destroy()
{
    if (!f)
        return;

    ensureContext();
    executeDeferredReleases();

    f = nullptr;
}

// Strictly speaking this is not necessary since we could do the deletes in
// release(). However, it is kind of nice that no release() ever requires a
// current context and so GL calls are isolated to specific places (build,
// beginFrame, endFrame) as much as possible.
void QRhiGles2::executeDeferredReleases()
{
    for (int i = releaseQueue.count() - 1; i >= 0; --i) {
        const QRhiGles2::DeferredReleaseEntry &e(releaseQueue[i]);
        switch (e.type) {
        case QRhiGles2::DeferredReleaseEntry::Buffer:
            f->glDeleteBuffers(1, &e.buffer.buffer);
            break;
        case QRhiGles2::DeferredReleaseEntry::Pipeline:
            f->glDeleteProgram(e.pipeline.program);
            break;
        case QRhiGles2::DeferredReleaseEntry::Texture:
            f->glDeleteTextures(1, &e.texture.texture);
            break;
        case QRhiGles2::DeferredReleaseEntry::RenderBuffer:
            f->glDeleteRenderbuffers(1, &e.renderbuffer.renderbuffer);
            break;
        case QRhiGles2::DeferredReleaseEntry::TextureRenderTarget:
            f->glDeleteFramebuffers(1, &e.textureRenderTarget.framebuffer);
            break;
        default:
            break;
        }
        releaseQueue.removeAt(i);
    }
}

QVector<int> QRhiGles2::supportedSampleCounts() const
{
    return { 1 };
}

QRhiSwapChain *QRhiGles2::createSwapChain()
{
    return new QGles2SwapChain(this);
}

QRhiBuffer *QRhiGles2::createBuffer(QRhiBuffer::Type type, QRhiBuffer::UsageFlags usage, int size)
{
    return new QGles2Buffer(this, type, usage, size);
}

int QRhiGles2::ubufAlignment() const
{
    return 256;
}

bool QRhiGles2::isYUpInFramebuffer() const
{
    return true;
}

QMatrix4x4 QRhiGles2::clipSpaceCorrMatrix() const
{
    return QMatrix4x4(); // identity
}

256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
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
static inline GLenum toGlCompressedTextureFormat(QRhiTexture::Format format, QRhiTexture::Flags flags)
{
    const bool srgb = flags.testFlag(QRhiTexture::sRGB);
    switch (format) {
    case QRhiTexture::BC1:
        return srgb ? 0x8C4C : 0x83F0;
    case QRhiTexture::BC3:
        return srgb ? 0x8C4E : 0x83F2;
    case QRhiTexture::BC5:
        return srgb ? 0x8C4F : 0x83F3;

    case QRhiTexture::ETC2_RGB8:
        return srgb ? 0x9275 : 0x9274;
    case QRhiTexture::ETC2_RGB8A1:
        return srgb ? 0x9277 : 0x9276;
    case QRhiTexture::ETC2_RGBA8:
        return srgb ? 0x9279 : 0x9278;

    case QRhiTexture::ASTC_4x4:
        return srgb ? 0x93D0 : 0x93B0;
    case QRhiTexture::ASTC_5x4:
        return srgb ? 0x93D1 : 0x93B1;
    case QRhiTexture::ASTC_5x5:
        return srgb ? 0x93D2 : 0x93B2;
    case QRhiTexture::ASTC_6x5:
        return srgb ? 0x93D3 : 0x93B3;
    case QRhiTexture::ASTC_6x6:
        return srgb ? 0x93D4 : 0x93B4;
    case QRhiTexture::ASTC_8x5:
        return srgb ? 0x93D5 : 0x93B5;
    case QRhiTexture::ASTC_8x6:
        return srgb ? 0x93D6 : 0x93B6;
    case QRhiTexture::ASTC_8x8:
        return srgb ? 0x93D7 : 0x93B7;
    case QRhiTexture::ASTC_10x5:
        return srgb ? 0x93D8 : 0x93B8;
    case QRhiTexture::ASTC_10x6:
        return srgb ? 0x93D9 : 0x93B9;
    case QRhiTexture::ASTC_10x8:
        return srgb ? 0x93DA : 0x93BA;
    case QRhiTexture::ASTC_10x10:
        return srgb ? 0x93DB : 0x93BB;
    case QRhiTexture::ASTC_12x10:
        return srgb ? 0x93DC : 0x93BC;
    case QRhiTexture::ASTC_12x12:
        return srgb ? 0x93DD : 0x93BD;

    default:
        return 0; // this is reachable, just return an invalid format
    }
}

308
bool QRhiGles2::isTextureFormatSupported(QRhiTexture::Format format, QRhiTexture::Flags flags) const
309
{
310
311
    if (isCompressedFormat(format))
        return supportedCompressedFormats.contains(toGlCompressedTextureFormat(format, flags));
312
313
314
315

    return true;
}

Laszlo Agocs's avatar
Laszlo Agocs committed
316
317
318
319
320
321
322
bool QRhiGles2::isFeatureSupported(QRhi::Feature feature) const
{
    switch (feature) {
    case QRhi::MultisampleTexture:
        return false;
    case QRhi::MultisampleRenderBuffer:
        return caps.msaaRenderBuffer;
323
324
    case QRhi::DebugMarkers:
        return false;
325
326
    case QRhi::Timestamps:
        return false;
327
328
329
330
    case QRhi::Instancing:
        return false;
    case QRhi::CustomInstanceStepRate:
        return false;
331
332
    case QRhi::PrimitiveRestart:
        return false; // say no to madness
Laszlo Agocs's avatar
Laszlo Agocs committed
333
334
335
336
337
338
    default:
        Q_UNREACHABLE();
        return false;
    }
}

339
340
341
342
343
344
345
346
347
348
349
350
351
int QRhiGles2::resourceSizeLimit(QRhi::ResourceSizeLimit limit) const
{
    switch (limit) {
    case QRhi::TextureSizeMin:
        return 1;
    case QRhi::TextureSizeMax:
        return caps.maxTextureSize;
    default:
        Q_UNREACHABLE();
        return 0;
    }
}

352
const QRhiNativeHandles *QRhiGles2::nativeHandles()
353
354
355
356
{
    return &nativeHandlesStruct;
}

357
QRhiRenderBuffer *QRhiGles2::createRenderBuffer(QRhiRenderBuffer::Type type, const QSize &pixelSize,
Laszlo Agocs's avatar
Laszlo Agocs committed
358
                                                int sampleCount, QRhiRenderBuffer::Flags flags)
359
{
Laszlo Agocs's avatar
Laszlo Agocs committed
360
    return new QGles2RenderBuffer(this, type, pixelSize, sampleCount, flags);
361
362
}

Laszlo Agocs's avatar
Laszlo Agocs committed
363
364
QRhiTexture *QRhiGles2::createTexture(QRhiTexture::Format format, const QSize &pixelSize,
                                      int sampleCount, QRhiTexture::Flags flags)
365
{
Laszlo Agocs's avatar
Laszlo Agocs committed
366
    return new QGles2Texture(this, format, pixelSize, sampleCount, flags);
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
}

QRhiSampler *QRhiGles2::createSampler(QRhiSampler::Filter magFilter, QRhiSampler::Filter minFilter,
                                      QRhiSampler::Filter mipmapMode,
                                      QRhiSampler::AddressMode u, QRhiSampler::AddressMode v, QRhiSampler::AddressMode w)
{
    return new QGles2Sampler(this, magFilter, minFilter, mipmapMode, u, v, w);
}

QRhiTextureRenderTarget *QRhiGles2::createTextureRenderTarget(const QRhiTextureRenderTargetDescription &desc,
                                                              QRhiTextureRenderTarget::Flags flags)
{
    return new QGles2TextureRenderTarget(this, desc, flags);
}

QRhiGraphicsPipeline *QRhiGles2::createGraphicsPipeline()
{
    return new QGles2GraphicsPipeline(this);
}

QRhiShaderResourceBindings *QRhiGles2::createShaderResourceBindings()
{
    return new QGles2ShaderResourceBindings(this);
}

void QRhiGles2::setGraphicsPipeline(QRhiCommandBuffer *cb, QRhiGraphicsPipeline *ps, QRhiShaderResourceBindings *srb)
{
    Q_ASSERT(inPass);

Laszlo Agocs's avatar
Laszlo Agocs committed
396
    QGles2GraphicsPipeline *psD = QRHI_RES(QGles2GraphicsPipeline, ps);
397
    if (!srb)
Laszlo Agocs's avatar
Laszlo Agocs committed
398
        srb = psD->m_shaderResourceBindings;
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420

    QGles2ShaderResourceBindings *srbD = QRHI_RES(QGles2ShaderResourceBindings, srb);
    QGles2CommandBuffer *cbD = QRHI_RES(QGles2CommandBuffer, cb);

    const bool pipelineChanged = cbD->currentPipeline != ps || cbD->currentPipelineGeneration != psD->generation;
    const bool srbChanged = cbD->currentSrb != srb || cbD->currentSrbGeneration != srbD->generation;

    if (pipelineChanged || srbChanged) {
        cbD->currentPipeline = ps;
        cbD->currentPipelineGeneration = psD->generation;
        cbD->currentSrb = srb;
        cbD->currentSrbGeneration = srbD->generation;

        QGles2CommandBuffer::Command cmd;
        cmd.cmd = QGles2CommandBuffer::Command::BindGraphicsPipeline;
        cmd.args.bindGraphicsPipeline.ps = ps;
        cmd.args.bindGraphicsPipeline.srb = srb;
        cmd.args.bindGraphicsPipeline.resOnlyChange = !pipelineChanged && srbChanged;
        cbD->commands.append(cmd);
    }
}

421
422
void QRhiGles2::setVertexInput(QRhiCommandBuffer *cb, int startBinding, const QVector<QRhiCommandBuffer::VertexInput> &bindings,
                               QRhiBuffer *indexBuf, quint32 indexOffset, QRhiCommandBuffer::IndexFormat indexFormat)
423
424
425
426
427
428
429
430
{
    Q_ASSERT(inPass);
    QGles2CommandBuffer *cbD = QRHI_RES(QGles2CommandBuffer, cb);

    for (int i = 0, ie = bindings.count(); i != ie; ++i) {
        QRhiBuffer *buf = bindings[i].first;
        quint32 ofs = bindings[i].second;
        QGles2Buffer *bufD = QRHI_RES(QGles2Buffer, buf);
Laszlo Agocs's avatar
Laszlo Agocs committed
431
        Q_ASSERT(bufD->m_usage.testFlag(QRhiBuffer::VertexBuffer));
432
433
434
435
436
437
438
439
440
441
442
        QGles2CommandBuffer::Command cmd;
        cmd.cmd = QGles2CommandBuffer::Command::BindVertexBuffer;
        cmd.args.bindVertexBuffer.ps = cbD->currentPipeline;
        cmd.args.bindVertexBuffer.buffer = bufD->buffer;
        cmd.args.bindVertexBuffer.offset = ofs;
        cmd.args.bindVertexBuffer.binding = startBinding + i;
        cbD->commands.append(cmd);
    }

    if (indexBuf) {
        QGles2Buffer *ibufD = QRHI_RES(QGles2Buffer, indexBuf);
Laszlo Agocs's avatar
Laszlo Agocs committed
443
        Q_ASSERT(ibufD->m_usage.testFlag(QRhiBuffer::IndexBuffer));
444
445
446
447
        QGles2CommandBuffer::Command cmd;
        cmd.cmd = QGles2CommandBuffer::Command::BindIndexBuffer;
        cmd.args.bindIndexBuffer.buffer = ibufD->buffer;
        cmd.args.bindIndexBuffer.offset = indexOffset;
448
        cmd.args.bindIndexBuffer.type = indexFormat == QRhiCommandBuffer::IndexUInt16 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT;
449
450
451
452
453
454
455
456
457
        cbD->commands.append(cmd);
    }
}

void QRhiGles2::setViewport(QRhiCommandBuffer *cb, const QRhiViewport &viewport)
{
    Q_ASSERT(inPass);
    QGles2CommandBuffer::Command cmd;
    cmd.cmd = QGles2CommandBuffer::Command::Viewport;
Laszlo Agocs's avatar
Laszlo Agocs committed
458
459
460
461
462
463
464
    const QVector4D r = viewport.viewport();
    cmd.args.viewport.x = r.x();
    cmd.args.viewport.y = r.y();
    cmd.args.viewport.w = r.z();
    cmd.args.viewport.h = r.w();
    cmd.args.viewport.d0 = viewport.minDepth();
    cmd.args.viewport.d1 = viewport.maxDepth();
465
466
467
468
469
470
471
472
    QRHI_RES(QGles2CommandBuffer, cb)->commands.append(cmd);
}

void QRhiGles2::setScissor(QRhiCommandBuffer *cb, const QRhiScissor &scissor)
{
    Q_ASSERT(inPass);
    QGles2CommandBuffer::Command cmd;
    cmd.cmd = QGles2CommandBuffer::Command::Scissor;
Laszlo Agocs's avatar
Laszlo Agocs committed
473
474
475
476
477
    const QVector4D r = scissor.scissor();
    cmd.args.scissor.x = r.x();
    cmd.args.scissor.y = r.y();
    cmd.args.scissor.w = r.z();
    cmd.args.scissor.h = r.w();
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
    QRHI_RES(QGles2CommandBuffer, cb)->commands.append(cmd);
}

void QRhiGles2::setBlendConstants(QRhiCommandBuffer *cb, const QVector4D &c)
{
    Q_ASSERT(inPass);
    QGles2CommandBuffer::Command cmd;
    cmd.cmd = QGles2CommandBuffer::Command::BlendConstants;
    cmd.args.blendConstants.r = c.x();
    cmd.args.blendConstants.g = c.y();
    cmd.args.blendConstants.b = c.z();
    cmd.args.blendConstants.a = c.w();
    QRHI_RES(QGles2CommandBuffer, cb)->commands.append(cmd);
}

void QRhiGles2::setStencilRef(QRhiCommandBuffer *cb, quint32 refValue)
{
    Q_ASSERT(inPass);
    QGles2CommandBuffer *cbD = QRHI_RES(QGles2CommandBuffer, cb);

    QGles2CommandBuffer::Command cmd;
    cmd.cmd = QGles2CommandBuffer::Command::StencilRef;
    cmd.args.stencilRef.ref = refValue;
    cmd.args.stencilRef.ps = cbD->currentPipeline;
    cbD->commands.append(cmd);
}

void QRhiGles2::draw(QRhiCommandBuffer *cb, quint32 vertexCount,
                     quint32 instanceCount, quint32 firstVertex, quint32 firstInstance)
{
    Q_ASSERT(inPass);
    Q_UNUSED(instanceCount); // no instancing
    Q_UNUSED(firstInstance);
    QGles2CommandBuffer *cbD = QRHI_RES(QGles2CommandBuffer, cb);

    QGles2CommandBuffer::Command cmd;
    cmd.cmd = QGles2CommandBuffer::Command::Draw;
    cmd.args.draw.ps = cbD->currentPipeline;
    cmd.args.draw.vertexCount = vertexCount;
    cmd.args.draw.firstVertex = firstVertex;
    cbD->commands.append(cmd);
}

void QRhiGles2::drawIndexed(QRhiCommandBuffer *cb, quint32 indexCount,
                            quint32 instanceCount, quint32 firstIndex, qint32 vertexOffset, quint32 firstInstance)
{
    Q_ASSERT(inPass);
    Q_UNUSED(instanceCount); // no instancing
    Q_UNUSED(firstInstance);
    Q_UNUSED(vertexOffset); // no glDrawElementsBaseVertex
    QGles2CommandBuffer *cbD = QRHI_RES(QGles2CommandBuffer, cb);

    QGles2CommandBuffer::Command cmd;
    cmd.cmd = QGles2CommandBuffer::Command::DrawIndexed;
    cmd.args.drawIndexed.ps = cbD->currentPipeline;
    cmd.args.drawIndexed.indexCount = indexCount;
    cmd.args.drawIndexed.firstIndex = firstIndex;
    cbD->commands.append(cmd);
}

538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
void QRhiGles2::debugMarkBegin(QRhiCommandBuffer *cb, const QByteArray &name)
{
    if (!debugMarkers)
        return;

    Q_UNUSED(cb);
    Q_UNUSED(name);
}

void QRhiGles2::debugMarkEnd(QRhiCommandBuffer *cb)
{
    if (!debugMarkers)
        return;

    Q_UNUSED(cb);
}

void QRhiGles2::debugMarkMsg(QRhiCommandBuffer *cb, const QByteArray &msg)
{
    if (!debugMarkers)
        return;

    Q_UNUSED(cb);
    Q_UNUSED(msg);
}

564
565
566
567
568
QRhi::FrameOpResult QRhiGles2::beginFrame(QRhiSwapChain *swapChain)
{
    Q_ASSERT(!inFrame);

    QGles2SwapChain *swapChainD = QRHI_RES(QGles2SwapChain, swapChain);
569
570
571
    if (!ensureContext(swapChainD->surface))
        return QRhi::FrameOpError;

572
    inFrame = true;
573
    currentSwapChain = swapChainD;
574

575
576
577
    QRhiProfilerPrivate *rhiP = profilerPrivateOrNull();
    QRHI_PROF_F(beginSwapChainFrame(swapChain));

578
579
580
581
582
583
584
585
586
    executeDeferredReleases();
    QRHI_RES(QGles2CommandBuffer, &swapChainD->cb)->resetState();

    return QRhi::FrameOpSuccess;
}

QRhi::FrameOpResult QRhiGles2::endFrame(QRhiSwapChain *swapChain)
{
    Q_ASSERT(inFrame);
587
    inFrame = false;
588
589

    QGles2SwapChain *swapChainD = QRHI_RES(QGles2SwapChain, swapChain);
590
591
    Q_ASSERT(currentSwapChain == swapChainD);

592
593
594
    if (!ensureContext(swapChainD->surface))
        return QRhi::FrameOpError;

595
596
    executeCommandBuffer(&swapChainD->cb);

597
598
599
600
    QRhiProfilerPrivate *rhiP = profilerPrivateOrNull();
    // this must be done before the swap
    QRHI_PROF_F(endSwapChainFrame(swapChain, swapChainD->frameCount + 1));

601
602
603
604
605
    if (swapChainD->surface) {
        ctx->swapBuffers(swapChainD->surface);
        buffersSwapped = true;
    }

606
607
608
609
    swapChainD->frameCount += 1;

    currentSwapChain = nullptr;

610
611
612
    return QRhi::FrameOpSuccess;
}

613
614
QRhi::FrameOpResult QRhiGles2::beginOffscreenFrame(QRhiCommandBuffer **cb)
{
615
616
617
618
619
620
621
622
623
624
625
626
627
    Q_ASSERT(!inFrame);

    if (!ensureContext())
        return QRhi::FrameOpError;

    inFrame = true;
    ofr.active = true;

    executeDeferredReleases();
    ofr.cbWrapper.resetState();
    *cb = &ofr.cbWrapper;

    return QRhi::FrameOpSuccess;
628
629
}

630
QRhi::FrameOpResult QRhiGles2::endOffscreenFrame()
631
{
632
633
634
635
636
637
638
639
640
641
    Q_ASSERT(inFrame && ofr.active);
    inFrame = false;
    ofr.active = false;

    if (!ensureContext())
        return QRhi::FrameOpError;

    executeCommandBuffer(&ofr.cbWrapper);

    return QRhi::FrameOpSuccess;;
642
643
}

644
645
646
QRhi::FrameOpResult QRhiGles2::finish()
{
    Q_ASSERT(!inPass);
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
    if (inFrame) {
        if (ofr.active) {
            Q_ASSERT(!currentSwapChain);
            if (!ensureContext())
                return QRhi::FrameOpError;
            executeCommandBuffer(&ofr.cbWrapper);
            ofr.cbWrapper.resetCommands();
        } else {
            Q_ASSERT(currentSwapChain);
            if (!ensureContext(currentSwapChain->surface))
                return QRhi::FrameOpError;
            executeCommandBuffer(&currentSwapChain->cb);
            currentSwapChain->cb.resetCommands();
        }
    }
662
663
664
    return QRhi::FrameOpSuccess;
}

665
void QRhiGles2::enqueueResourceUpdates(QRhiCommandBuffer *cb, QRhiResourceUpdateBatch *resourceUpdates)
666
{
667
    QGles2CommandBuffer *cbD = QRHI_RES(QGles2CommandBuffer, cb);
668
669
670
671
    QRhiResourceUpdateBatchPrivate *ud = QRhiResourceUpdateBatchPrivate::get(resourceUpdates);

    for (const QRhiResourceUpdateBatchPrivate::DynamicBufferUpdate &u : ud->dynamicBufferUpdates) {
        QGles2Buffer *bufD = QRHI_RES(QGles2Buffer, u.buf);
Laszlo Agocs's avatar
Laszlo Agocs committed
672
673
        Q_ASSERT(bufD->m_type == QRhiBuffer::Dynamic);
        if (bufD->m_usage.testFlag(QRhiBuffer::UniformBuffer)) {
674
675
676
677
678
679
680
            memcpy(bufD->ubuf.data() + u.offset, u.data.constData(), u.data.size());
            QGles2Buffer::ChangeRange &r(bufD->ubufChangeRange);
            if (r.changeBegin == -1 || u.offset < r.changeBegin)
                r.changeBegin = u.offset;
            if (r.changeEnd == -1 || u.offset + u.data.size() > r.changeEnd)
                r.changeEnd = u.offset + u.data.size();
        } else {
681
682
683
684
685
686
687
688
            QGles2CommandBuffer::Command cmd;
            cmd.cmd = QGles2CommandBuffer::Command::BufferSubData;
            cmd.args.bufferSubData.target = bufD->target;
            cmd.args.bufferSubData.buffer = bufD->buffer;
            cmd.args.bufferSubData.offset = u.offset;
            cmd.args.bufferSubData.size = u.data.size();
            cmd.args.bufferSubData.data = cbD->retainData(u.data);
            cbD->commands.append(cmd);
689
690
691
692
693
        }
    }

    for (const QRhiResourceUpdateBatchPrivate::StaticBufferUpload &u : ud->staticBufferUploads) {
        QGles2Buffer *bufD = QRHI_RES(QGles2Buffer, u.buf);
Laszlo Agocs's avatar
Laszlo Agocs committed
694
        Q_ASSERT(bufD->m_type != QRhiBuffer::Dynamic);
695
        Q_ASSERT(u.offset + u.data.size() <= bufD->m_size);
Laszlo Agocs's avatar
Laszlo Agocs committed
696
        if (bufD->m_usage.testFlag(QRhiBuffer::UniformBuffer)) {
Laszlo Agocs's avatar
Laszlo Agocs committed
697
            memcpy(bufD->ubuf.data() + u.offset, u.data.constData(), u.data.size());
698
699
            bufD->ubufChangeRange = { 0, u.data.size() };
        } else {
700
            QGles2CommandBuffer::Command cmd;
701
702
703
704
705
706
            cmd.cmd = QGles2CommandBuffer::Command::BufferSubData;
            cmd.args.bufferSubData.target = bufD->target;
            cmd.args.bufferSubData.buffer = bufD->buffer;
            cmd.args.bufferSubData.offset = u.offset;
            cmd.args.bufferSubData.size = u.data.size();
            cmd.args.bufferSubData.data = cbD->retainData(u.data);
707
            cbD->commands.append(cmd);
708
709
710
711
712
        }
    }

    for (const QRhiResourceUpdateBatchPrivate::TextureUpload &u : ud->textureUploads) {
        QGles2Texture *texD = QRHI_RES(QGles2Texture, u.tex);
713
        const bool isCompressed = isCompressedFormat(texD->m_format);
Laszlo Agocs's avatar
Laszlo Agocs committed
714
        const bool isCubeMap = texD->m_flags.testFlag(QRhiTexture::CubeMap);
715
        const GLenum faceTargetBase = isCubeMap ? GL_TEXTURE_CUBE_MAP_POSITIVE_X : texD->target;
716
717
718
719
720
721
722
723
724
725
726
727
728
        const QVector<QRhiTextureLayer> layers = u.desc.layers();
        for (int layer = 0, layerCount = layers.count(); layer != layerCount; ++layer) {
            const QRhiTextureLayer &layerDesc(layers[layer]);
            const QVector<QRhiTextureMipLevel> mipImages = layerDesc.mipImages();
            for (int level = 0, levelCount = mipImages.count(); level != levelCount; ++level) {
                const QRhiTextureMipLevel &mipDesc(mipImages[level]);
                const QPoint dp = mipDesc.destinationTopLeft();
                const QByteArray compressedData = mipDesc.compressedData();
                if (isCompressed && !compressedData.isEmpty()) {
                    QSize size;
                    if (mipDesc.sourceSize().isEmpty()) {
                        size.setWidth(qFloor(float(qMax(1, texD->m_pixelSize.width() >> level))));
                        size.setHeight(qFloor(float(qMax(1, texD->m_pixelSize.height() >> level))));
729
                    } else {
730
                        size = mipDesc.sourceSize();
731
                    }
732
                    if (texD->specified) {
733
734
                        QGles2CommandBuffer::Command cmd;
                        cmd.cmd = QGles2CommandBuffer::Command::CompressedSubImage;
735
736
                        cmd.args.compressedSubImage.dst = texD;
                        cmd.args.compressedSubImage.faceTarget = faceTargetBase + layer;
737
                        cmd.args.compressedSubImage.level = level;
738
739
740
741
                        cmd.args.compressedSubImage.dx = dp.x();
                        cmd.args.compressedSubImage.dy = dp.y();
                        cmd.args.compressedSubImage.w = size.width();
                        cmd.args.compressedSubImage.h = size.height();
742
                        cmd.args.compressedSubImage.glintformat = texD->glintformat;
743
744
                        cmd.args.compressedSubImage.size = compressedData.size();
                        cmd.args.compressedSubImage.data = cbD->retainData(compressedData);
745
                        cbD->commands.append(cmd);
746
                    } else {
747
748
                        QGles2CommandBuffer::Command cmd;
                        cmd.cmd = QGles2CommandBuffer::Command::CompressedImage;
749
750
                        cmd.args.compressedImage.dst = texD;
                        cmd.args.compressedImage.faceTarget = faceTargetBase + layer;
751
752
                        cmd.args.compressedImage.level = level;
                        cmd.args.compressedImage.glintformat = texD->glintformat;
753
754
755
756
                        cmd.args.compressedImage.w = size.width();
                        cmd.args.compressedImage.h = size.height();
                        cmd.args.compressedImage.size = compressedData.size();
                        cmd.args.compressedImage.data = cbD->retainData(compressedData);
757
                        cbD->commands.append(cmd);
758
759
                    }
                } else {
760
761
                    QImage img = mipDesc.image();
                    QSize size = img.size();
762
763
                    QGles2CommandBuffer::Command cmd;
                    cmd.cmd = QGles2CommandBuffer::Command::SubImage;
764
765
766
767
768
                    if (!mipDesc.sourceSize().isEmpty() || !mipDesc.sourceTopLeft().isNull()) {
                        const QPoint sp = mipDesc.sourceTopLeft();
                        if (!mipDesc.sourceSize().isEmpty())
                            size = mipDesc.sourceSize();
                        img = img.copy(sp.x(), sp.y(), size.width(), size.height());
769
                    }
770
771
                    cmd.args.subImage.dst = texD;
                    cmd.args.subImage.faceTarget = faceTargetBase + layer;
772
                    cmd.args.subImage.level = level;
773
774
775
776
                    cmd.args.subImage.dx = dp.x();
                    cmd.args.subImage.dy = dp.y();
                    cmd.args.subImage.w = size.width();
                    cmd.args.subImage.h = size.height();
777
778
779
780
                    cmd.args.subImage.glformat = texD->glformat;
                    cmd.args.subImage.gltype = texD->gltype;
                    cmd.args.subImage.data = cbD->retainImage(img);
                    cbD->commands.append(cmd);
781
                }
782
783
            }
        }
784
        texD->specified = true;
785
786
    }

Laszlo Agocs's avatar
Laszlo Agocs committed
787
788
789
790
791
    for (const QRhiResourceUpdateBatchPrivate::TextureCopy &u : ud->textureCopies) {
        Q_ASSERT(u.src && u.dst);
        QGles2Texture *srcD = QRHI_RES(QGles2Texture, u.src);
        QGles2Texture *dstD = QRHI_RES(QGles2Texture, u.dst);

792
        const QSize size = u.desc.pixelSize().isEmpty() ? srcD->m_pixelSize : u.desc.pixelSize();
Laszlo Agocs's avatar
Laszlo Agocs committed
793
        // source offset is bottom-left
794
795
        const float sx = u.desc.sourceTopLeft().x();
        const float sy = srcD->m_pixelSize.height() - (u.desc.sourceTopLeft().y() + size.height() - 1);
Laszlo Agocs's avatar
Laszlo Agocs committed
796
        // destination offset is top-left
797
798
        const float dx = u.desc.destinationTopLeft().x();
        const float dy = u.desc.destinationTopLeft().y();
Laszlo Agocs's avatar
Laszlo Agocs committed
799

800
801
        const GLenum srcFaceTargetBase = srcD->m_flags.testFlag(QRhiTexture::CubeMap) ? GL_TEXTURE_CUBE_MAP_POSITIVE_X : srcD->target;
        const GLenum dstFaceTargetBase = dstD->m_flags.testFlag(QRhiTexture::CubeMap) ? GL_TEXTURE_CUBE_MAP_POSITIVE_X : dstD->target;
Laszlo Agocs's avatar
Laszlo Agocs committed
802

803
804
        QGles2CommandBuffer::Command cmd;
        cmd.cmd = QGles2CommandBuffer::Command::CopyTex;
Laszlo Agocs's avatar
Laszlo Agocs committed
805

806
        cmd.args.copyTex.srcFaceTarget = srcFaceTargetBase + u.desc.sourceLayer();
807
        cmd.args.copyTex.srcTexture = srcD->texture;
808
        cmd.args.copyTex.srcLevel = u.desc.sourceLevel();
809
810
811
        cmd.args.copyTex.srcX = sx;
        cmd.args.copyTex.srcY = sy;

812
        cmd.args.copyTex.dst = dstD;
813
814
        cmd.args.copyTex.dstFaceTarget = dstFaceTargetBase + u.desc.destinationLayer();
        cmd.args.copyTex.dstLevel = u.desc.destinationLevel();
815
816
817
818
819
820
821
822
823
824
825
826
827
        cmd.args.copyTex.dstX = dx;
        cmd.args.copyTex.dstY = dy;

        cmd.args.copyTex.w = size.width();
        cmd.args.copyTex.h = size.height();

        cbD->commands.append(cmd);
    }

    for (const QRhiResourceUpdateBatchPrivate::TextureRead &u : ud->textureReadbacks) {
        QGles2CommandBuffer::Command cmd;
        cmd.cmd = QGles2CommandBuffer::Command::ReadPixels;
        cmd.args.readPixels.result = u.result;
828
829
830
        cmd.args.readPixels.texture = QRHI_RES(QGles2Texture, u.rb.texture());
        cmd.args.readPixels.layer = u.rb.layer();
        cmd.args.readPixels.level = u.rb.level();
831
        cbD->commands.append(cmd);
Laszlo Agocs's avatar
Laszlo Agocs committed
832
833
    }

Laszlo Agocs's avatar
Laszlo Agocs committed
834
835
836
837
838
839
840
    for (const QRhiResourceUpdateBatchPrivate::TextureMipGen &u : ud->textureMipGens) {
        QGles2CommandBuffer::Command cmd;
        cmd.cmd = QGles2CommandBuffer::Command::GenMip;
        cmd.args.genMip.tex = QRHI_RES(QGles2Texture, u.tex);
        cbD->commands.append(cmd);
    }

841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
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
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
    ud->free();
}

static inline GLenum toGlTopology(QRhiGraphicsPipeline::Topology t)
{
    switch (t) {
    case QRhiGraphicsPipeline::Triangles:
        return GL_TRIANGLES;
    case QRhiGraphicsPipeline::TriangleStrip:
        return GL_TRIANGLE_STRIP;
    case QRhiGraphicsPipeline::Lines:
        return GL_LINES;
    case QRhiGraphicsPipeline::LineStrip:
        return GL_LINE_STRIP;
    case QRhiGraphicsPipeline::Points:
        return GL_POINTS;
    default:
        Q_UNREACHABLE();
        return GL_TRIANGLES;
    }
}

static inline GLenum toGlCullMode(QRhiGraphicsPipeline::CullMode c)
{
    switch (c) {
    case QRhiGraphicsPipeline::Front:
        return GL_FRONT;
    case QRhiGraphicsPipeline::Back:
        return GL_BACK;
    default:
        Q_UNREACHABLE();
        return GL_BACK;
    }
}

static inline GLenum toGlFrontFace(QRhiGraphicsPipeline::FrontFace f)
{
    switch (f) {
    case QRhiGraphicsPipeline::CCW:
        return GL_CCW;
    case QRhiGraphicsPipeline::CW:
        return GL_CW;
    default:
        Q_UNREACHABLE();
        return GL_CCW;
    }
}

static inline GLenum toGlBlendFactor(QRhiGraphicsPipeline::BlendFactor f)
{
    switch (f) {
    case QRhiGraphicsPipeline::Zero:
        return GL_ZERO;
    case QRhiGraphicsPipeline::One:
        return GL_ONE;
    case QRhiGraphicsPipeline::SrcColor:
        return GL_SRC_COLOR;
    case QRhiGraphicsPipeline::OneMinusSrcColor:
        return GL_ONE_MINUS_SRC_COLOR;
    case QRhiGraphicsPipeline::DstColor:
        return GL_DST_COLOR;
    case QRhiGraphicsPipeline::OneMinusDstColor:
        return GL_ONE_MINUS_DST_COLOR;
    case QRhiGraphicsPipeline::SrcAlpha:
        return GL_SRC_ALPHA;
    case QRhiGraphicsPipeline::OneMinusSrcAlpha:
        return GL_ONE_MINUS_SRC_ALPHA;
    case QRhiGraphicsPipeline::DstAlpha:
        return GL_DST_ALPHA;
    case QRhiGraphicsPipeline::OneMinusDstAlpha:
        return GL_ONE_MINUS_DST_ALPHA;
    case QRhiGraphicsPipeline::ConstantColor:
        return GL_CONSTANT_COLOR;
    case QRhiGraphicsPipeline::OneMinusConstantColor:
        return GL_ONE_MINUS_CONSTANT_COLOR;
    case QRhiGraphicsPipeline::ConstantAlpha:
        return GL_CONSTANT_ALPHA;
    case QRhiGraphicsPipeline::OneMinusConstantAlpha:
        return GL_ONE_MINUS_CONSTANT_ALPHA;
    case QRhiGraphicsPipeline::SrcAlphaSaturate:
        return GL_SRC_ALPHA_SATURATE;
    case QRhiGraphicsPipeline::Src1Color:
        Q_FALLTHROUGH();
    case QRhiGraphicsPipeline::OneMinusSrc1Color:
        Q_FALLTHROUGH();
    case QRhiGraphicsPipeline::Src1Alpha:
        Q_FALLTHROUGH();
    case QRhiGraphicsPipeline::OneMinusSrc1Alpha:
        qWarning("Unsupported blend factor %d", f);
        return GL_ZERO;
    default:
        Q_UNREACHABLE();
        return GL_ZERO;
    }
}

static inline GLenum toGlBlendOp(QRhiGraphicsPipeline::BlendOp op)
{
    switch (op) {
    case QRhiGraphicsPipeline::Add:
        return GL_FUNC_ADD;
    case QRhiGraphicsPipeline::Subtract:
        return GL_FUNC_SUBTRACT;
    case QRhiGraphicsPipeline::ReverseSubtract:
        return GL_FUNC_REVERSE_SUBTRACT;
    case QRhiGraphicsPipeline::Min:
        return GL_MIN;
    case QRhiGraphicsPipeline::Max:
        return GL_MAX;
    default:
        Q_UNREACHABLE();
        return GL_FUNC_ADD;
    }
}

static inline GLenum toGlCompareOp(QRhiGraphicsPipeline::CompareOp op)
{
    switch (op) {
    case QRhiGraphicsPipeline::Never:
        return GL_NEVER;
    case QRhiGraphicsPipeline::Less:
        return GL_LESS;
    case QRhiGraphicsPipeline::Equal:
        return GL_EQUAL;
    case QRhiGraphicsPipeline::LessOrEqual:
        return GL_LEQUAL;
    case QRhiGraphicsPipeline::Greater:
        return GL_GREATER;
    case QRhiGraphicsPipeline::NotEqual:
        return GL_NOTEQUAL;
    case QRhiGraphicsPipeline::GreaterOrEqual:
        return GL_GEQUAL;
    case QRhiGraphicsPipeline::Always:
        return GL_ALWAYS;
    default:
        Q_UNREACHABLE();
        return GL_ALWAYS;
    }
}

static inline GLenum toGlStencilOp(QRhiGraphicsPipeline::StencilOp op)
{
    switch (op) {
    case QRhiGraphicsPipeline::StencilZero:
        return GL_ZERO;
    case QRhiGraphicsPipeline::Keep:
        return GL_KEEP;
    case QRhiGraphicsPipeline::Replace:
        return GL_REPLACE;
    case QRhiGraphicsPipeline::IncrementAndClamp:
        return GL_INCR;
    case QRhiGraphicsPipeline::DecrementAndClamp:
        return GL_DECR;
    case QRhiGraphicsPipeline::Invert:
        return GL_INVERT;
    case QRhiGraphicsPipeline::IncrementAndWrap:
        return GL_INCR_WRAP;
    case QRhiGraphicsPipeline::DecrementAndWrap:
        return GL_DECR_WRAP;
    default:
        Q_UNREACHABLE();
        return GL_KEEP;
    }
}

static inline GLenum toGlMinFilter(QRhiSampler::Filter f, QRhiSampler::Filter m)
{
    switch (f) {
    case QRhiSampler::Nearest:
        if (m == QRhiSampler::None)
            return GL_NEAREST;
        else
            return m == QRhiSampler::Nearest ? GL_NEAREST_MIPMAP_NEAREST : GL_NEAREST_MIPMAP_LINEAR;
    case QRhiSampler::Linear:
        if (m == QRhiSampler::None)
            return GL_LINEAR;
        else
            return m == QRhiSampler::Nearest ? GL_LINEAR_MIPMAP_NEAREST : GL_LINEAR_MIPMAP_LINEAR;
    default:
        Q_UNREACHABLE();
        return GL_LINEAR;
    }
}

static inline GLenum toGlMagFilter(QRhiSampler::Filter f)
{
    switch (f) {
    case QRhiSampler::Nearest:
        return GL_NEAREST;
    case QRhiSampler::Linear:
        return GL_LINEAR;
    default:
        Q_UNREACHABLE();
        return GL_LINEAR;
    }
}

static inline GLenum toGlWrapMode(QRhiSampler::AddressMode m)
{
    switch (m) {
    case QRhiSampler::Repeat:
        return GL_REPEAT;
    case QRhiSampler::ClampToEdge:
        return GL_CLAMP_TO_EDGE;
    case QRhiSampler::Mirror:
        return GL_MIRRORED_REPEAT;
    case QRhiSampler::MirrorOnce:
        Q_FALLTHROUGH();
    case QRhiSampler::Border:
        qWarning("Unsupported wrap mode %d", m);
        return GL_CLAMP_TO_EDGE;
    default:
        Q_UNREACHABLE();
        return GL_CLAMP_TO_EDGE;
    }
}

void QRhiGles2::executeCommandBuffer(QRhiCommandBuffer *cb)
{
    QGles2CommandBuffer *cbD = QRHI_RES(QGles2CommandBuffer, cb);
    GLenum indexType = GL_UNSIGNED_SHORT;
    quint32 indexStride = sizeof(quint16);
    quint32 indexOffset = 0;

    for (const QGles2CommandBuffer::Command &cmd : qAsConst(cbD->commands)) {
        switch (cmd.cmd) {
        case QGles2CommandBuffer::Command::Viewport:
            f->glViewport(cmd.args.viewport.x, cmd.args.viewport.y, cmd.args.viewport.w, cmd.args.viewport.h);
            f->glDepthRangef(cmd.args.viewport.d0, cmd.args.viewport.d1);
            break;
        case QGles2CommandBuffer::Command::Scissor:
            f->glScissor(cmd.args.scissor.x, cmd.args.scissor.y, cmd.args.scissor.w, cmd.args.scissor.h);
            break;
        case QGles2CommandBuffer::Command::BlendConstants:
            f->glBlendColor(cmd.args.blendConstants.r, cmd.args.blendConstants.g, cmd.args.blendConstants.b, cmd.args.blendConstants.a);
            break;
        case QGles2CommandBuffer::Command::StencilRef:
        {
Laszlo Agocs's avatar
Laszlo Agocs committed
1079
1080
1081
1082
            QGles2GraphicsPipeline *psD = QRHI_RES(QGles2GraphicsPipeline, cmd.args.stencilRef.ps);
            if (psD) {
                f->glStencilFuncSeparate(GL_FRONT, toGlCompareOp(psD->m_stencilFront.compareOp), cmd.args.stencilRef.ref, psD->m_stencilReadMask);
                f->glStencilFuncSeparate(GL_BACK, toGlCompareOp(psD->m_stencilBack.compareOp), cmd.args.stencilRef.ref, psD->m_stencilReadMask);
1083
1084
1085
1086
1087
1088
1089
            } else {
                qWarning("No graphics pipeline active for setStencilRef; ignored");
            }
        }
            break;
        case QGles2CommandBuffer::Command::BindVertexBuffer:
        {
Laszlo Agocs's avatar
Laszlo Agocs committed
1090
1091
            QGles2GraphicsPipeline *psD = QRHI_RES(QGles2GraphicsPipeline, cmd.args.bindVertexBuffer.ps);
            if (psD) {
Laszlo Agocs's avatar
Laszlo Agocs committed
1092
1093
1094
1095
                const QVector<QRhiVertexInputBinding> bindings = psD->m_vertexInputLayout.bindings();
                const QVector<QRhiVertexInputAttribute> attributes = psD->m_vertexInputLayout.attributes();
                for (const QRhiVertexInputAttribute &a : attributes) {
                    if (a.binding() != cmd.args.bindVertexBuffer.binding)
1096
1097
1098
1099
1100
                        continue;

                    // we do not support more than one vertex buffer
                    f->glBindBuffer(GL_ARRAY_BUFFER, cmd.args.bindVertexBuffer.buffer);

Laszlo Agocs's avatar
Laszlo Agocs committed
1101
                    const int stride = bindings[a.binding()].stride();
1102
1103
                    int size = 1;
                    GLenum type = GL_FLOAT;
1104
                    bool normalize = false;
Laszlo Agocs's avatar
Laszlo Agocs committed
1105
1106
                    switch (a.format()) {
                    case QRhiVertexInputAttribute::Float4:
1107
1108
1109
                        type = GL_FLOAT;
                        size = 4;
                        break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1110
                    case QRhiVertexInputAttribute::Float3:
1111
1112
1113
                        type = GL_FLOAT;
                        size = 3;
                        break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1114
                    case QRhiVertexInputAttribute::Float2:
1115
1116
1117
                        type = GL_FLOAT;
                        size = 2;
                        break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1118
                    case QRhiVertexInputAttribute::Float:
1119
1120
1121
                        type = GL_FLOAT;
                        size = 1;
                        break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1122
                    case QRhiVertexInputAttribute::UNormByte4:
1123
                        type = GL_UNSIGNED_BYTE;
1124
                        normalize = true;
1125
1126
                        size = 4;
                        break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1127
                    case QRhiVertexInputAttribute::UNormByte2:
1128
                        type = GL_UNSIGNED_BYTE;
1129
                        normalize = true;
1130
1131
                        size = 2;
                        break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1132
                    case QRhiVertexInputAttribute::UNormByte:
1133
                        type = GL_UNSIGNED_BYTE;
1134
                        normalize = true;
1135
1136
1137
1138
1139
                        size = 1;
                        break;
                    default:
                        break;
                    }
Laszlo Agocs's avatar
Laszlo Agocs committed
1140
1141
                    quint32 ofs = a.offset() + cmd.args.bindVertexBuffer.offset;
                    f->glVertexAttribPointer(a.location(), size, type, normalize, stride,
1142
                                             reinterpret_cast<const GLvoid *>(quintptr(ofs)));
Laszlo Agocs's avatar
Laszlo Agocs committed
1143
                    f->glEnableVertexAttribArray(a.location());
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
                }
            } else {
                qWarning("No graphics pipeline active for setVertexInput; ignored");
            }
        }
            break;
        case QGles2CommandBuffer::Command::BindIndexBuffer:
            indexType = cmd.args.bindIndexBuffer.type;
            indexStride = indexType == GL_UNSIGNED_SHORT ? sizeof(quint16) : sizeof(quint32);
            indexOffset = cmd.args.bindIndexBuffer.offset;
            f->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, cmd.args.bindIndexBuffer.buffer);
            break;
        case QGles2CommandBuffer::Command::Draw:
        {
Laszlo Agocs's avatar
Laszlo Agocs committed
1158
1159
1160
            QGles2GraphicsPipeline *psD = QRHI_RES(QGles2GraphicsPipeline, cmd.args.draw.ps);
            if (psD)
                f->glDrawArrays(psD->drawMode, cmd.args.draw.firstVertex, cmd.args.draw.vertexCount);
1161
1162
1163
1164
1165
1166
            else
                qWarning("No graphics pipeline active for draw; ignored");
        }
            break;
        case QGles2CommandBuffer::Command::DrawIndexed:
        {
Laszlo Agocs's avatar
Laszlo Agocs committed
1167
1168
            QGles2GraphicsPipeline *psD = QRHI_RES(QGles2GraphicsPipeline, cmd.args.drawIndexed.ps);
            if (psD) {
1169
                quint32 ofs = cmd.args.drawIndexed.firstIndex * indexStride + indexOffset;
Laszlo Agocs's avatar
Laszlo Agocs committed
1170
                f->glDrawElements(psD->drawMode,
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
                                  cmd.args.drawIndexed.indexCount,
                                  indexType,
                                  reinterpret_cast<const GLvoid *>(quintptr(ofs)));
            } else {
                qWarning("No graphics pipeline active for drawIndexed; ignored");
            }
        }
            break;
        case QGles2CommandBuffer::Command::BindGraphicsPipeline:
            if (cmd.args.bindGraphicsPipeline.resOnlyChange) {
                setChangedUniforms(QRHI_RES(QGles2GraphicsPipeline, cmd.args.bindGraphicsPipeline.ps),
                                   cmd.args.bindGraphicsPipeline.srb,
                                   false);
            } else {
                executeBindGraphicsPipeline(cmd.args.bindGraphicsPipeline.ps, cmd.args.bindGraphicsPipeline.srb);
            }
            break;
        case QGles2CommandBuffer::Command::BindFramebuffer:
            if (cmd.args.bindFramebuffer.rt)
                f->glBindFramebuffer(GL_FRAMEBUFFER,
                                     QRHI_RES(QGles2TextureRenderTarget, cmd.args.bindFramebuffer.rt)->framebuffer);
            else
                f->glBindFramebuffer(GL_FRAMEBUFFER, ctx->defaultFramebufferObject());
            break;
        case QGles2CommandBuffer::Command::Clear:
            f->glDisable(GL_SCISSOR_TEST);
            if (cmd.args.clear.mask & GL_COLOR_BUFFER_BIT) {
                f->glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
                f->glClearColor(cmd.args.clear.c[0], cmd.args.clear.c[1], cmd.args.clear.c[2], cmd.args.clear.c[3]);
            }
            if (cmd.args.clear.mask & GL_DEPTH_BUFFER_BIT) {
                f->glDepthMask(GL_TRUE);
                f->glClearDepthf(cmd.args.clear.d);
            }
            if (cmd.args.clear.mask & GL_STENCIL_BUFFER_BIT) {
                f->glStencilMask(GL_TRUE);
                f->glClearStencil(cmd.args.clear.s);
            }
            f->glClear(cmd.args.clear.mask);
            break;
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
        case QGles2CommandBuffer::Command::BufferSubData:
            f->glBindBuffer(cmd.args.bufferSubData.target, cmd.args.bufferSubData.buffer);
            f->glBufferSubData(cmd.args.bufferSubData.target, cmd.args.bufferSubData.offset, cmd.args.bufferSubData.size,
                               cmd.args.bufferSubData.data);
            break;
        case QGles2CommandBuffer::Command::CopyTex:
        {
            GLuint fbo;
            f->glGenFramebuffers(1, &fbo);
            f->glBindFramebuffer(GL_FRAMEBUFFER, fbo);
            f->glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
1222
1223
1224
                                      cmd.args.copyTex.srcFaceTarget, cmd.args.copyTex.srcTexture, cmd.args.copyTex.srcLevel);
            f->glBindTexture(cmd.args.copyTex.dst->target, cmd.args.copyTex.dst->texture);
            f->glCopyTexSubImage2D(cmd.args.copyTex.dstFaceTarget, cmd.args.copyTex.dstLevel,
1225
1226
1227
1228
1229
1230
1231
                                   cmd.args.copyTex.dstX, cmd.args.copyTex.dstY,
                                   cmd.args.copyTex.srcX, cmd.args.copyTex.srcY,
                                   cmd.args.copyTex.w, cmd.args.copyTex.h);
            f->glBindFramebuffer(GL_FRAMEBUFFER, ctx->defaultFramebufferObject());
            f->glDeleteFramebuffers(1, &fbo);
        }
            break;
1232
1233
        case QGles2CommandBuffer::Command::ReadPixels:
        {
Laszlo Agocs's avatar
Laszlo Agocs committed
1234
            // ### more formats
1235
            QRhiReadbackResult *result = cmd.args.readPixels.result;
1236
            QGles2Texture *texD = cmd.args.readPixels.texture;
1237
            GLuint fbo = 0;
1238
            if (texD) {
1239
1240
1241
1242
                result->pixelSize = texD->m_pixelSize;
                result->format = texD->m_format;
                f->glGenFramebuffers(1, &fbo);
                f->glBindFramebuffer(GL_FRAMEBUFFER, fbo);
1243
1244
                const GLenum faceTargetBase = texD->m_flags.testFlag(QRhiTexture::CubeMap) ? GL_TEXTURE_CUBE_MAP_POSITIVE_X : texD->target;
                f->glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, faceTargetBase + cmd.args.readPixels.layer, texD->texture, cmd.args.readPixels.level);
1245
1246
1247
            } else {
                result->pixelSize = currentSwapChain->pixelSize;
                result->format = QRhiTexture::RGBA8;
1248
                // readPixels handles multisample resolving implicitly
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
            }
            result->data.resize(result->pixelSize.width() * result->pixelSize.height() * 4);
            f->glReadPixels(0, 0, result->pixelSize.width(), result->pixelSize.height(),
                            GL_RGBA, GL_UNSIGNED_BYTE,
                            result->data.data());
            if (fbo) {
                f->glBindFramebuffer(GL_FRAMEBUFFER, ctx->defaultFramebufferObject());
                f->glDeleteFramebuffers(1, &fbo);
            }
            if (result->completed)
                result->completed();
        }
            break;
1262
        case QGles2CommandBuffer::Command::SubImage:
1263
1264
            f->glBindTexture(cmd.args.subImage.dst->target, cmd.args.subImage.dst->texture);
            f->glTexSubImage2D(cmd.args.subImage.faceTarget, cmd.args.subImage.level,
1265
1266
1267
1268
1269
1270
                               cmd.args.subImage.dx, cmd.args.subImage.dy,
                               cmd.args.subImage.w, cmd.args.subImage.h,
                               cmd.args.subImage.glformat, cmd.args.subImage.gltype,
                               cmd.args.subImage.data);
            break;
        case QGles2CommandBuffer::Command::CompressedImage:
1271
1272
            f->glBindTexture(cmd.args.compressedImage.dst->target, cmd.args.compressedImage.dst->texture);
            f->glCompressedTexImage2D(cmd.args.compressedImage.faceTarget, cmd.args.compressedImage.level,
1273
1274
1275
1276
1277
                                      cmd.args.compressedImage.glintformat,
                                      cmd.args.compressedImage.w, cmd.args.compressedImage.h, 0,
                                      cmd.args.compressedImage.size, cmd.args.compressedImage.data);
            break;
        case QGles2CommandBuffer::Command::CompressedSubImage:
1278
1279
            f->glBindTexture(cmd.args.compressedSubImage.dst->target, cmd.args.compressedSubImage.dst->texture);
            f->glCompressedTexSubImage2D(cmd.args.compressedSubImage.faceTarget, cmd.args.compressedSubImage.level,
1280
1281
1282
1283
1284
                                         cmd.args.compressedSubImage.dx, cmd.args.compressedSubImage.dy,
                                         cmd.args.compressedSubImage.w, cmd.args.compressedSubImage.h,
                                         cmd.args.compressedSubImage.glintformat,
                                         cmd.args.compressedSubImage.size, cmd.args.compressedSubImage.data);
            break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1285
1286
1287
1288
1289
1290
1291
1292
1293
        case QGles2CommandBuffer::Command::BlitFromRenderbuffer:
        {
            GLuint fbo[2];
            f->glGenFramebuffers(2, fbo);
            f->glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo[0]);
            f->glFramebufferRenderbuffer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
                                         GL_RENDERBUFFER, cmd.args.blitFromRb.renderbuffer);
            f->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo[1]);
            QGles2Texture *texD = cmd.args.blitFromRb.dst;
1294
1295
            const GLenum faceTargetBase = texD->m_flags.testFlag(QRhiTexture::CubeMap) ? GL_TEXTURE_CUBE_MAP_POSITIVE_X : texD->target;
            f->glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, faceTargetBase + cmd.args.blitFromRb.dstLayer,
Laszlo Agocs's avatar
Laszlo Agocs committed
1296
1297
1298
1299
1300
1301
1302
1303
                                      texD->texture, cmd.args.blitFromRb.dstLevel);
            f->glBlitFramebuffer(0, 0, cmd.args.blitFromRb.w, cmd.args.blitFromRb.h,
                                 0, 0, cmd.args.blitFromRb.w, cmd.args.blitFromRb.h,
                                 GL_COLOR_BUFFER_BIT,
                                 GL_LINEAR);
            f->glBindFramebuffer(GL_FRAMEBUFFER, ctx->defaultFramebufferObject());
        }
            break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1304
1305
1306
1307
        case QGles2CommandBuffer::Command::GenMip:
            f->glBindTexture(cmd.args.genMip.tex->target, cmd.args.genMip.tex->texture);
            f->glGenerateMipmap(cmd.args.genMip.tex->target);
            break;
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
        default:
            break;
        }
    }
}

void QRhiGles2::executeBindGraphicsPipeline(QRhiGraphicsPipeline *ps, QRhiShaderResourceBindings *srb)
{
    QGles2GraphicsPipeline *psD = QRHI_RES(QGles2GraphicsPipeline, ps);

Laszlo Agocs's avatar
Laszlo Agocs committed
1318
    if (psD->m_flags.testFlag(QRhiGraphicsPipeline::UsesScissor))
1319
1320
1321
        f->glEnable(GL_SCISSOR_TEST);
    else
        f->glDisable(GL_SCISSOR_TEST);
Laszlo Agocs's avatar
Laszlo Agocs committed
1322
    if (psD->m_cullMode == QRhiGraphicsPipeline::None) {
1323
1324
1325
        f->glDisable(GL_CULL_FACE);
    } else {
        f->glEnable(GL_CULL_FACE);
Laszlo Agocs's avatar
Laszlo Agocs committed
1326
        f->glCullFace(toGlCullMode(psD->m_cullMode));
1327
    }
Laszlo Agocs's avatar
Laszlo Agocs committed
1328
1329
1330
    f->glFrontFace(toGlFrontFace(psD->m_frontFace));
    if (!psD->m_targetBlends.isEmpty()) {
        const QRhiGraphicsPipeline::TargetBlend &blend(psD->m_targetBlends.first()); // no MRT
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
        GLboolean wr = blend.colorWrite.testFlag(QRhiGraphicsPipeline::R);
        GLboolean wg = blend.colorWrite.testFlag(QRhiGraphicsPipeline::G);
        GLboolean wb = blend.colorWrite.testFlag(QRhiGraphicsPipeline::B);
        GLboolean wa = blend.colorWrite.testFlag(QRhiGraphicsPipeline::A);
        f->glColorMask(wr, wg, wb, wa);
        if (blend.enable) {
            f->glEnable(GL_BLEND);
            f->glBlendFuncSeparate(toGlBlendFactor(blend.srcColor),
                                   toGlBlendFactor(blend.dstColor),
                                   toGlBlendFactor(blend.srcAlpha),
                                   toGlBlendFactor(blend.dstAlpha));
            f->glBlendEquationSeparate(toGlBlendOp(blend.opColor), toGlBlendOp(blend.opAlpha));
        } else {
            f->glDisable(GL_BLEND);
        }
    } else {
        f->glDisable(GL_BLEND);
    }
Laszlo Agocs's avatar
Laszlo Agocs committed
1349
    if (psD->m_depthTest)
1350
1351
1352
        f->glEnable(GL_DEPTH_TEST);
    else
        f->glDisable(GL_DEPTH_TEST);
Laszlo Agocs's avatar
Laszlo Agocs committed
1353
    if (psD->m_depthWrite)
1354
1355
1356
        f->glDepthMask(GL_TRUE);
    else
        f->glDepthMask(GL_FALSE);
Laszlo Agocs's avatar
Laszlo Agocs committed
1357
1358
    f->glDepthFunc(toGlCompareOp(psD->m_depthOp));
    if (psD->m_stencilTest) {
1359
        f->glEnable(GL_STENCIL_TEST);
Laszlo Agocs's avatar
Laszlo Agocs committed
1360
        f->glStencilFuncSeparate(GL_FRONT, toGlCompareOp(psD->m_stencilFront.compareOp), 0, psD->m_stencilReadMask);
1361
        f->glStencilOpSeparate(GL_FRONT,
Laszlo Agocs's avatar
Laszlo Agocs committed
1362
1363
1364
1365
1366
                               toGlStencilOp(psD->m_stencilFront.failOp),
                               toGlStencilOp(psD->m_stencilFront.depthFailOp),
                               toGlStencilOp(psD->m_stencilFront.passOp));
        f->glStencilMaskSeparate(GL_FRONT, psD->m_stencilWriteMask);
        f->glStencilFuncSeparate(GL_BACK, toGlCompareOp(psD->m_stencilBack.compareOp), 0, psD->m_stencilReadMask);
1367
        f->glStencilOpSeparate(GL_BACK,
Laszlo Agocs's avatar
Laszlo Agocs committed
1368
1369
1370
1371
                               toGlStencilOp(psD->m_stencilBack.failOp),
                               toGlStencilOp(psD->m_stencilBack.depthFailOp),
                               toGlStencilOp(psD->m_stencilBack.passOp));
        f->glStencilMaskSeparate(GL_BACK, psD->m_stencilWriteMask);
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
    } else {
        f->glDisable(GL_STENCIL_TEST);
    }

    f->glUseProgram(psD->program);
    // buffer data cannot change within the pass so this time is as good to update uniforms as any
    setChangedUniforms(psD, srb, false);
}

void QRhiGles2::setChangedUniforms(QGles2GraphicsPipeline *psD, QRhiShaderResourceBindings *srb, bool changedOnly)
{
Laszlo Agocs's avatar
Laszlo Agocs committed
1383
    QGles2ShaderResourceBindings *srbD = QRHI_RES(QGles2ShaderResourceBindings, srb);
Laszlo Agocs's avatar
Laszlo Agocs committed
1384

Laszlo Agocs's avatar
Laszlo Agocs committed
1385
    for (int i = 0, ie = srbD->m_bindings.count(); i != ie; ++i) {
1386
        const QRhiShaderResourceBindingPrivate *b = QRhiShaderResourceBindingPrivate::get(&srbD->m_bindings[i]);
Laszlo Agocs's avatar
Laszlo Agocs committed
1387
1388
        QGles2ShaderResourceBindings::BoundResourceData &bd(srbD->boundResourceData[i]);

1389
        switch (b->type) {
Laszlo Agocs's avatar
Laszlo Agocs committed
1390
        case QRhiShaderResourceBinding::UniformBuffer:
1391
        {
1392
            QGles2Buffer *bufD = QRHI_RES(QGles2Buffer, b->u.ubuf.buf);
1393
1394
            if (changedOnly && bufD->ubufChangeRange.isNull()) // do not set again when nothing changed
                break;
1395
1396
            const QByteArray bufView = QByteArray::fromRawData(bufD->ubuf.constData() + b->u.ubuf.offset,
                                                               b->u.ubuf.maybeSize ? b->u.ubuf.maybeSize : bufD->m_size);
1397
            for (QGles2GraphicsPipeline::Uniform &uniform : psD->uniforms) {
1398
                if (uniform.binding == b->binding
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
                        && (!changedOnly ||
                            (uniform.offset >= uint(bufD->ubufChangeRange.changeBegin)
                             && uniform.offset < uint(bufD->ubufChangeRange.changeEnd))))
                {
                    memcpy(uniform.data.data(), bufView.constData() + uniform.offset, uniform.data.size());

                    switch (uniform.type) {
                    case QShaderDescription::Float:
                        f->glUniform1f(uniform.glslLocation, *reinterpret_cast<const float *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Vec2:
                        f->glUniform2fv(uniform.glslLocation, 1, reinterpret_cast<const float *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Vec3:
                        f->glUniform3fv(uniform.glslLocation, 1, reinterpret_cast<const float *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Vec4:
                        f->glUniform4fv(uniform.glslLocation, 1, reinterpret_cast<const float *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Mat2:
                        f->glUniformMatrix2fv(uniform.glslLocation, 1, GL_FALSE, reinterpret_cast<const float *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Mat3:
                        f->glUniformMatrix3fv(uniform.glslLocation, 1, GL_FALSE, reinterpret_cast<const float *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Mat4:
                        f->glUniformMatrix4fv(uniform.glslLocation, 1, GL_FALSE, reinterpret_cast<const float *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Int:
                        f->glUniform1i(uniform.glslLocation, *reinterpret_cast<const qint32 *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Int2:
                        f->glUniform2iv(uniform.glslLocation, 1, reinterpret_cast<const qint32 *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Int3:
                        f->glUniform3iv(uniform.glslLocation, 1, reinterpret_cast<const qint32 *>(uniform.data.constData()));
                        break;
                    case QShaderDescription::Int4:
                        f->glUniform4iv(uniform.glslLocation, 1, reinterpret_cast<const qint32 *>(uniform.data.constData()));
                        break;
                    // ### more types
                    default:
                        break;
                    }
                }
            }

            bufD->ubufChangeRange = QGles2Buffer::ChangeRange();
        }
            break;
Laszlo Agocs's avatar
Laszlo Agocs committed
1449
        case QRhiShaderResourceBinding::SampledTexture:
1450
        {
1451
1452
            QGles2Texture *texD = QRHI_RES(QGles2Texture, b->u.stex.tex);
            QGles2Sampler *samplerD = QRHI_RES(QGles2Sampler, b->u.stex.sampler);
1453

1454
            const bool textureChanged = QRHI_RES(QGles2Texture, b->u.stex.tex)->generation != bd.stex.texGeneration;
Laszlo Agocs's avatar
Laszlo Agocs committed
1455
            if (textureChanged)
1456
1457
                bd.stex.texGeneration = QRHI_RES(QGles2Texture, b->u.stex.tex)->generation;
            const bool samplerChanged = QRHI_RES(QGles2Sampler, b->u.stex.sampler)->generation != bd.stex.samplerGeneration;
Laszlo Agocs's avatar
Laszlo Agocs committed
1458
            if (samplerChanged)
1459
                bd.stex.samplerGeneration = QRHI_RES(QGles2Sampler, b->u.stex.sampler)->generation;
Laszlo Agocs's avatar
Laszlo Agocs committed
1460

1461
1462
            int texUnit = 0;
            for (QGles2GraphicsPipeline::Sampler &sampler : psD->samplers) {
1463
                if (sampler.binding == b->binding) {
1464
1465
1466
                    f->glActiveTexture(GL_TEXTURE0 + texUnit);
                    f->glBindTexture(texD->target, texD->texture);