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39
40
41 #include "qsgcompressedtexture_p.h"
42 #include <QOpenGLContext>
43 #include <QOpenGLTexture>
44 #include <QOpenGLFunctions>
45 #include <QDebug>
46 #include <QtQuick/private/qquickwindow_p.h>
47 #include <QtGui/private/qrhi_p.h>
48
49 QT_BEGIN_NAMESPACE
50
51 Q_LOGGING_CATEGORY(QSG_LOG_TEXTUREIO, "qt.scenegraph.textureio");
52
QSGCompressedTexture(const QTextureFileData & texData)53 QSGCompressedTexture::QSGCompressedTexture(const QTextureFileData &texData)
54 : QSGTexture(*(new QSGCompressedTexturePrivate)),
55 m_textureData(texData)
56 {
57 m_size = m_textureData.size();
58 m_hasAlpha = !formatIsOpaque(m_textureData.glInternalFormat());
59 }
60
~QSGCompressedTexture()61 QSGCompressedTexture::~QSGCompressedTexture()
62 {
63 #if QT_CONFIG(opengl)
64 if (m_textureId) {
65 QOpenGLContext *ctx = QOpenGLContext::currentContext();
66 QOpenGLFunctions *funcs = ctx ? ctx->functions() : nullptr;
67 if (!funcs)
68 return;
69
70 funcs->glDeleteTextures(1, &m_textureId);
71 }
72 #endif
73
74 delete m_texture;
75 }
76
textureId() const77 int QSGCompressedTexture::textureId() const
78 {
79 #if QT_CONFIG(opengl)
80 if (!m_textureId) {
81 QOpenGLContext *ctx = QOpenGLContext::currentContext();
82 QOpenGLFunctions *funcs = ctx ? ctx->functions() : nullptr;
83 if (!funcs)
84 return 0;
85
86 funcs->glGenTextures(1, &m_textureId);
87 }
88 #endif
89 return m_textureId;
90 }
91
comparisonKey() const92 int QSGCompressedTexturePrivate::comparisonKey() const
93 {
94 Q_Q(const QSGCompressedTexture);
95 // not textureId() as that would create an id when not yet done - that's not wanted here
96 if (q->m_textureId)
97 return q->m_textureId;
98
99 if (q->m_texture)
100 return int(qintptr(q->m_texture));
101
102 // two textures (and so materials) with not-yet-created texture underneath are never equal
103 return int(qintptr(q));
104 }
105
textureSize() const106 QSize QSGCompressedTexture::textureSize() const
107 {
108 return m_size;
109 }
110
hasAlphaChannel() const111 bool QSGCompressedTexture::hasAlphaChannel() const
112 {
113 return m_hasAlpha;
114 }
115
hasMipmaps() const116 bool QSGCompressedTexture::hasMipmaps() const
117 {
118 return false;
119 }
120
bind()121 void QSGCompressedTexture::bind()
122 {
123 #if QT_CONFIG(opengl)
124 QOpenGLContext *ctx = QOpenGLContext::currentContext();
125 QOpenGLFunctions *funcs = ctx ? ctx->functions() : nullptr;
126 if (!funcs)
127 return;
128
129 if (!textureId())
130 return;
131
132 funcs->glBindTexture(GL_TEXTURE_2D, m_textureId);
133
134 if (m_uploaded)
135 return;
136
137 if (!m_textureData.isValid()) {
138 qCDebug(QSG_LOG_TEXTUREIO, "Invalid texture data for %s", m_textureData.logName().constData());
139 funcs->glBindTexture(GL_TEXTURE_2D, 0);
140 return;
141 }
142
143 if (Q_UNLIKELY(QSG_LOG_TEXTUREIO().isDebugEnabled())) {
144 qCDebug(QSG_LOG_TEXTUREIO) << "Uploading texture" << m_textureData;
145 while (funcs->glGetError() != GL_NO_ERROR);
146 }
147
148 funcs->glCompressedTexImage2D(GL_TEXTURE_2D, 0, m_textureData.glInternalFormat(),
149 m_size.width(), m_size.height(), 0, m_textureData.dataLength(),
150 m_textureData.data().constData() + m_textureData.dataOffset());
151
152 if (Q_UNLIKELY(QSG_LOG_TEXTUREIO().isDebugEnabled())) {
153 GLuint error = funcs->glGetError();
154 if (error != GL_NO_ERROR) {
155 qCDebug(QSG_LOG_TEXTUREIO, "glCompressedTexImage2D failed for %s, error 0x%x", m_textureData.logName().constData(), error);
156 }
157 }
158
159 m_textureData = QTextureFileData(); // Release this memory, not needed anymore
160
161 updateBindOptions(true);
162 m_uploaded = true;
163 #endif // QT_CONFIG(opengl)
164 }
165
toRhiCompressedFormat(uint glinternalformat)166 static QPair<QRhiTexture::Format, bool> toRhiCompressedFormat(uint glinternalformat)
167 {
168 switch (glinternalformat) {
169 case QOpenGLTexture::RGB_DXT1:
170 return { QRhiTexture::BC1, false };
171 case QOpenGLTexture::SRGB_DXT1:
172 return { QRhiTexture::BC1, true };
173
174 case QOpenGLTexture::RGBA_DXT3:
175 return { QRhiTexture::BC3, false };
176 case QOpenGLTexture::SRGB_Alpha_DXT3:
177 return { QRhiTexture::BC3, true };
178
179 case QOpenGLTexture::RGBA_DXT5:
180 return { QRhiTexture::BC5, false };
181 case QOpenGLTexture::SRGB_Alpha_DXT5:
182 return { QRhiTexture::BC5, true };
183
184 case QOpenGLTexture::RGB8_ETC2:
185 return { QRhiTexture::ETC2_RGB8, false };
186 case QOpenGLTexture::SRGB8_ETC2:
187 return { QRhiTexture::ETC2_RGB8, true };
188
189 case QOpenGLTexture::RGB8_PunchThrough_Alpha1_ETC2:
190 return { QRhiTexture::ETC2_RGB8A1, false };
191 case QOpenGLTexture::SRGB8_PunchThrough_Alpha1_ETC2:
192 return { QRhiTexture::ETC2_RGB8A1, true };
193
194 case QOpenGLTexture::RGBA8_ETC2_EAC:
195 return { QRhiTexture::ETC2_RGBA8, false };
196 case QOpenGLTexture::SRGB8_Alpha8_ETC2_EAC:
197 return { QRhiTexture::ETC2_RGBA8, true };
198
199 case QOpenGLTexture::RGBA_ASTC_4x4:
200 return { QRhiTexture::ASTC_4x4, false };
201 case QOpenGLTexture::SRGB8_Alpha8_ASTC_4x4:
202 return { QRhiTexture::ASTC_4x4, true };
203
204 case QOpenGLTexture::RGBA_ASTC_5x4:
205 return { QRhiTexture::ASTC_5x4, false };
206 case QOpenGLTexture::SRGB8_Alpha8_ASTC_5x4:
207 return { QRhiTexture::ASTC_5x4, true };
208
209 case QOpenGLTexture::RGBA_ASTC_5x5:
210 return { QRhiTexture::ASTC_5x5, false };
211 case QOpenGLTexture::SRGB8_Alpha8_ASTC_5x5:
212 return { QRhiTexture::ASTC_5x5, true };
213
214 case QOpenGLTexture::RGBA_ASTC_6x5:
215 return { QRhiTexture::ASTC_6x5, false };
216 case QOpenGLTexture::SRGB8_Alpha8_ASTC_6x5:
217 return { QRhiTexture::ASTC_6x5, true };
218
219 case QOpenGLTexture::RGBA_ASTC_6x6:
220 return { QRhiTexture::ASTC_6x6, false };
221 case QOpenGLTexture::SRGB8_Alpha8_ASTC_6x6:
222 return { QRhiTexture::ASTC_6x6, true };
223
224 case QOpenGLTexture::RGBA_ASTC_8x5:
225 return { QRhiTexture::ASTC_8x5, false };
226 case QOpenGLTexture::SRGB8_Alpha8_ASTC_8x5:
227 return { QRhiTexture::ASTC_8x5, true };
228
229 case QOpenGLTexture::RGBA_ASTC_8x6:
230 return { QRhiTexture::ASTC_8x6, false };
231 case QOpenGLTexture::SRGB8_Alpha8_ASTC_8x6:
232 return { QRhiTexture::ASTC_8x6, true };
233
234 case QOpenGLTexture::RGBA_ASTC_8x8:
235 return { QRhiTexture::ASTC_8x8, false };
236 case QOpenGLTexture::SRGB8_Alpha8_ASTC_8x8:
237 return { QRhiTexture::ASTC_8x8, true };
238
239 case QOpenGLTexture::RGBA_ASTC_10x5:
240 return { QRhiTexture::ASTC_10x5, false };
241 case QOpenGLTexture::SRGB8_Alpha8_ASTC_10x5:
242 return { QRhiTexture::ASTC_10x5, true };
243
244 case QOpenGLTexture::RGBA_ASTC_10x6:
245 return { QRhiTexture::ASTC_10x6, false };
246 case QOpenGLTexture::SRGB8_Alpha8_ASTC_10x6:
247 return { QRhiTexture::ASTC_10x6, true };
248
249 case QOpenGLTexture::RGBA_ASTC_10x8:
250 return { QRhiTexture::ASTC_10x8, false };
251 case QOpenGLTexture::SRGB8_Alpha8_ASTC_10x8:
252 return { QRhiTexture::ASTC_10x8, true };
253
254 case QOpenGLTexture::RGBA_ASTC_10x10:
255 return { QRhiTexture::ASTC_10x10, false };
256 case QOpenGLTexture::SRGB8_Alpha8_ASTC_10x10:
257 return { QRhiTexture::ASTC_10x10, true };
258
259 case QOpenGLTexture::RGBA_ASTC_12x10:
260 return { QRhiTexture::ASTC_12x10, false };
261 case QOpenGLTexture::SRGB8_Alpha8_ASTC_12x10:
262 return { QRhiTexture::ASTC_12x10, true };
263
264 case QOpenGLTexture::RGBA_ASTC_12x12:
265 return { QRhiTexture::ASTC_12x12, false };
266 case QOpenGLTexture::SRGB8_Alpha8_ASTC_12x12:
267 return { QRhiTexture::ASTC_12x12, true };
268
269 default:
270 return { QRhiTexture::UnknownFormat, false };
271 }
272 }
273
rhiTexture() const274 QRhiTexture *QSGCompressedTexturePrivate::rhiTexture() const
275 {
276 Q_Q(const QSGCompressedTexture);
277 return q->m_texture;
278 }
279
updateRhiTexture(QRhi * rhi,QRhiResourceUpdateBatch * resourceUpdates)280 void QSGCompressedTexturePrivate::updateRhiTexture(QRhi *rhi, QRhiResourceUpdateBatch *resourceUpdates)
281 {
282 Q_Q(QSGCompressedTexture);
283 if (q->m_uploaded)
284 return;
285
286 q->m_uploaded = true; // even if fails, no point in trying again
287
288 if (!q->m_textureData.isValid()) {
289 qCDebug(QSG_LOG_TEXTUREIO, "Invalid texture data for %s", q->m_textureData.logName().constData());
290 return;
291 }
292
293 const QPair<QRhiTexture::Format, bool> fmt = toRhiCompressedFormat(q->m_textureData.glInternalFormat());
294 if (fmt.first == QRhiTexture::UnknownFormat) {
295 qWarning("Unknown compressed format 0x%x", q->m_textureData.glInternalFormat());
296 return;
297 }
298
299 QRhiTexture::Flags texFlags;
300 if (fmt.second)
301 texFlags |= QRhiTexture::sRGB;
302
303 if (!rhi->isTextureFormatSupported(fmt.first, texFlags)) {
304 qWarning("Unsupported compressed format 0x%x", q->m_textureData.glInternalFormat());
305 return;
306 }
307
308 if (!q->m_texture) {
309 q->m_texture = rhi->newTexture(fmt.first, q->m_size, 1, texFlags);
310 if (!q->m_texture->build()) {
311 qWarning("Failed to create QRhiTexture for compressed data");
312 delete q->m_texture;
313 q->m_texture = nullptr;
314 return;
315 }
316 }
317
318 // only upload mip level 0 since we never do mipmapping for compressed textures (for now?)
319 resourceUpdates->uploadTexture(q->m_texture, QRhiTextureUploadEntry(0, 0,
320 { q->m_textureData.data().constData() + q->m_textureData.dataOffset(), q->m_textureData.dataLength() }));
321
322 q->m_textureData = QTextureFileData(); // Release this memory, not needed anymore
323 }
324
textureData() const325 QTextureFileData QSGCompressedTexture::textureData() const
326 {
327 return m_textureData;
328 }
329
formatIsOpaque(quint32 glTextureFormat)330 bool QSGCompressedTexture::formatIsOpaque(quint32 glTextureFormat)
331 {
332 switch (glTextureFormat) {
333 case QOpenGLTexture::RGB_DXT1:
334 case QOpenGLTexture::R_ATI1N_UNorm:
335 case QOpenGLTexture::R_ATI1N_SNorm:
336 case QOpenGLTexture::RG_ATI2N_UNorm:
337 case QOpenGLTexture::RG_ATI2N_SNorm:
338 case QOpenGLTexture::RGB_BP_UNSIGNED_FLOAT:
339 case QOpenGLTexture::RGB_BP_SIGNED_FLOAT:
340 case QOpenGLTexture::R11_EAC_UNorm:
341 case QOpenGLTexture::R11_EAC_SNorm:
342 case QOpenGLTexture::RG11_EAC_UNorm:
343 case QOpenGLTexture::RG11_EAC_SNorm:
344 case QOpenGLTexture::RGB8_ETC2:
345 case QOpenGLTexture::SRGB8_ETC2:
346 case QOpenGLTexture::RGB8_ETC1:
347 case QOpenGLTexture::SRGB_DXT1:
348 return true;
349 break;
350 default:
351 return false;
352 }
353 }
354
QSGCompressedTextureFactory(const QTextureFileData & texData)355 QSGCompressedTextureFactory::QSGCompressedTextureFactory(const QTextureFileData &texData)
356 : m_textureData(texData)
357 {
358 }
359
createTexture(QQuickWindow * window) const360 QSGTexture *QSGCompressedTextureFactory::createTexture(QQuickWindow *window) const
361 {
362 if (!m_textureData.isValid())
363 return nullptr;
364
365 // attempt to atlas the texture
366 QSGRenderContext *context = QQuickWindowPrivate::get(window)->context;
367 QSGTexture *t = context->compressedTextureForFactory(this);
368 if (t)
369 return t;
370
371 return new QSGCompressedTexture(m_textureData);
372 }
373
textureByteCount() const374 int QSGCompressedTextureFactory::textureByteCount() const
375 {
376 return qMax(0, m_textureData.data().size() - m_textureData.dataOffset());
377 }
378
textureSize() const379 QSize QSGCompressedTextureFactory::textureSize() const
380 {
381 return m_textureData.size();
382 }
383
384 QT_END_NAMESPACE
385