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39 | |
40 | #include "qopengltextureuploader_p.h" |
41 | |
42 | #include <qimage.h> |
43 | #include <qmath.h> |
44 | #include <qopenglfunctions.h> |
45 | #include <private/qopenglcontext_p.h> |
46 | #include <private/qopenglextensions_p.h> |
47 | |
48 | #ifndef GL_RED |
49 | #define GL_RED 0x1903 |
50 | #endif |
51 | |
52 | #ifndef GL_GREEN |
53 | #define GL_GREEN 0x1904 |
54 | #endif |
55 | |
56 | #ifndef GL_BLUE |
57 | #define GL_BLUE 0x1905 |
58 | #endif |
59 | |
60 | #ifndef GL_RGB10_A2 |
61 | #define GL_RGB10_A2 0x8059 |
62 | #endif |
63 | |
64 | #ifndef GL_RGBA16 |
65 | #define GL_RGBA16 0x805B |
66 | #endif |
67 | |
68 | #ifndef GL_BGR |
69 | #define GL_BGR 0x80E0 |
70 | #endif |
71 | |
72 | #ifndef GL_BGRA |
73 | #define GL_BGRA 0x80E1 |
74 | #endif |
75 | |
76 | #ifndef GL_UNSIGNED_INT_8_8_8_8_REV |
77 | #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367 |
78 | #endif |
79 | |
80 | #ifndef GL_UNSIGNED_INT_2_10_10_10_REV |
81 | #define GL_UNSIGNED_INT_2_10_10_10_REV 0x8368 |
82 | #endif |
83 | |
84 | #ifndef GL_TEXTURE_SWIZZLE_R |
85 | #define GL_TEXTURE_SWIZZLE_R 0x8E42 |
86 | #endif |
87 | |
88 | #ifndef GL_TEXTURE_SWIZZLE_G |
89 | #define GL_TEXTURE_SWIZZLE_G 0x8E43 |
90 | #endif |
91 | |
92 | #ifndef GL_TEXTURE_SWIZZLE_B |
93 | #define GL_TEXTURE_SWIZZLE_B 0x8E44 |
94 | #endif |
95 | |
96 | #ifndef GL_TEXTURE_SWIZZLE_A |
97 | #define GL_TEXTURE_SWIZZLE_A 0x8E45 |
98 | #endif |
99 | |
100 | #ifndef GL_SRGB |
101 | #define GL_SRGB 0x8C40 |
102 | #endif |
103 | #ifndef GL_SRGB_ALPHA |
104 | #define GL_SRGB_ALPHA 0x8C42 |
105 | #endif |
106 | |
107 | QT_BEGIN_NAMESPACE |
108 | |
109 | qsizetype QOpenGLTextureUploader::textureImage(GLenum target, const QImage &image, QOpenGLTextureUploader::BindOptions options, QSize maxSize) |
110 | { |
111 | QOpenGLContext *context = QOpenGLContext::currentContext(); |
112 | QOpenGLExtensions *funcs = static_cast<QOpenGLExtensions*>(context->functions()); |
113 | |
114 | QImage tx; |
115 | GLenum externalFormat; |
116 | GLenum internalFormat; |
117 | GLuint pixelType; |
118 | QImage::Format targetFormat = QImage::Format_Invalid; |
119 | const bool isOpenGL12orBetter = !context->isOpenGLES() && (context->format().majorVersion() >= 2 || context->format().minorVersion() >= 2); |
120 | const bool isOpenGLES3orBetter = context->isOpenGLES() && context->format().majorVersion() >= 3; |
121 | const bool sRgbBinding = (options & SRgbBindOption); |
122 | Q_ASSERT(isOpenGL12orBetter || context->isOpenGLES()); |
123 | Q_ASSERT((options & (SRgbBindOption | UseRedForAlphaAndLuminanceBindOption)) != (SRgbBindOption | UseRedForAlphaAndLuminanceBindOption)); |
124 | |
125 | switch (image.format()) { |
126 | case QImage::Format_RGB32: |
127 | case QImage::Format_ARGB32: |
128 | case QImage::Format_ARGB32_Premultiplied: |
129 | if (isOpenGL12orBetter) { |
130 | externalFormat = GL_BGRA; |
131 | internalFormat = GL_RGBA; |
132 | pixelType = GL_UNSIGNED_INT_8_8_8_8_REV; |
133 | #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN |
134 | // Without GL_UNSIGNED_INT_8_8_8_8_REV, BGRA only matches ARGB on little endian: |
135 | } else if (funcs->hasOpenGLExtension(extension: QOpenGLExtensions::BGRATextureFormat) && !sRgbBinding) { |
136 | // The GL_EXT_texture_format_BGRA8888 extension requires the internal format to match the external. |
137 | externalFormat = internalFormat = GL_BGRA; |
138 | pixelType = GL_UNSIGNED_BYTE; |
139 | } else if (context->isOpenGLES() && context->hasExtension(QByteArrayLiteral("GL_APPLE_texture_format_BGRA8888" ))) { |
140 | // Is only allowed as an external format like OpenGL. |
141 | externalFormat = GL_BGRA; |
142 | internalFormat = GL_RGBA; |
143 | pixelType = GL_UNSIGNED_BYTE; |
144 | #endif |
145 | } else if (funcs->hasOpenGLExtension(extension: QOpenGLExtensions::TextureSwizzle)) { |
146 | #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN |
147 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, GL_BLUE); |
148 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, GL_RED); |
149 | #else |
150 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, GL_GREEN); |
151 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_G, GL_BLUE); |
152 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, GL_ALPHA); |
153 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_A, GL_RED); |
154 | #endif |
155 | externalFormat = internalFormat = GL_RGBA; |
156 | pixelType = GL_UNSIGNED_BYTE; |
157 | } else { |
158 | // No support for direct ARGB32 upload. |
159 | break; |
160 | } |
161 | targetFormat = image.format(); |
162 | break; |
163 | case QImage::Format_BGR30: |
164 | case QImage::Format_A2BGR30_Premultiplied: |
165 | if (sRgbBinding) { |
166 | // Always needs conversion |
167 | break; |
168 | } else if (isOpenGL12orBetter || isOpenGLES3orBetter) { |
169 | pixelType = GL_UNSIGNED_INT_2_10_10_10_REV; |
170 | externalFormat = GL_RGBA; |
171 | internalFormat = GL_RGB10_A2; |
172 | targetFormat = image.format(); |
173 | } |
174 | break; |
175 | case QImage::Format_RGB30: |
176 | case QImage::Format_A2RGB30_Premultiplied: |
177 | if (sRgbBinding) { |
178 | // Always needs conversion |
179 | break; |
180 | } else if (isOpenGL12orBetter) { |
181 | pixelType = GL_UNSIGNED_INT_2_10_10_10_REV; |
182 | externalFormat = GL_BGRA; |
183 | internalFormat = GL_RGB10_A2; |
184 | targetFormat = image.format(); |
185 | } else if (funcs->hasOpenGLExtension(extension: QOpenGLExtensions::TextureSwizzle)) { |
186 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, GL_RED); |
187 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, GL_BLUE); |
188 | pixelType = GL_UNSIGNED_INT_2_10_10_10_REV; |
189 | externalFormat = GL_RGBA; |
190 | internalFormat = GL_RGB10_A2; |
191 | targetFormat = image.format(); |
192 | } |
193 | break; |
194 | case QImage::Format_RGB444: |
195 | case QImage::Format_RGB555: |
196 | case QImage::Format_RGB16: |
197 | if (isOpenGL12orBetter || context->isOpenGLES()) { |
198 | externalFormat = internalFormat = GL_RGB; |
199 | pixelType = GL_UNSIGNED_SHORT_5_6_5; |
200 | targetFormat = QImage::Format_RGB16; |
201 | } |
202 | break; |
203 | case QImage::Format_RGB666: |
204 | case QImage::Format_RGB888: |
205 | externalFormat = internalFormat = GL_RGB; |
206 | pixelType = GL_UNSIGNED_BYTE; |
207 | targetFormat = QImage::Format_RGB888; |
208 | break; |
209 | case QImage::Format_BGR888: |
210 | if (isOpenGL12orBetter) { |
211 | externalFormat = GL_BGR; |
212 | internalFormat = GL_RGB; |
213 | pixelType = GL_UNSIGNED_BYTE; |
214 | targetFormat = QImage::Format_BGR888; |
215 | } else if (funcs->hasOpenGLExtension(extension: QOpenGLExtensions::TextureSwizzle)) { |
216 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, GL_RED); |
217 | funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, GL_BLUE); |
218 | externalFormat = internalFormat = GL_RGB; |
219 | pixelType = GL_UNSIGNED_BYTE; |
220 | targetFormat = QImage::Format_BGR888; |
221 | } |
222 | break; |
223 | case QImage::Format_RGBX8888: |
224 | case QImage::Format_RGBA8888: |
225 | case QImage::Format_RGBA8888_Premultiplied: |
226 | externalFormat = internalFormat = GL_RGBA; |
227 | pixelType = GL_UNSIGNED_BYTE; |
228 | targetFormat = image.format(); |
229 | break; |
230 | case QImage::Format_RGBX64: |
231 | case QImage::Format_RGBA64: |
232 | case QImage::Format_RGBA64_Premultiplied: |
233 | externalFormat = internalFormat = GL_RGBA; |
234 | if (isOpenGL12orBetter || (context->isOpenGLES() && context->format().majorVersion() >= 3)) |
235 | internalFormat = GL_RGBA16; |
236 | pixelType = GL_UNSIGNED_SHORT; |
237 | targetFormat = image.format(); |
238 | break; |
239 | case QImage::Format_Indexed8: |
240 | if (sRgbBinding) { |
241 | // Always needs conversion |
242 | break; |
243 | } else if (options & UseRedForAlphaAndLuminanceBindOption) { |
244 | externalFormat = internalFormat = GL_RED; |
245 | pixelType = GL_UNSIGNED_BYTE; |
246 | targetFormat = image.format(); |
247 | } |
248 | break; |
249 | case QImage::Format_Alpha8: |
250 | if (sRgbBinding) { |
251 | // Always needs conversion |
252 | break; |
253 | } else if (options & UseRedForAlphaAndLuminanceBindOption) { |
254 | externalFormat = internalFormat = GL_RED; |
255 | pixelType = GL_UNSIGNED_BYTE; |
256 | targetFormat = image.format(); |
257 | } else if (context->isOpenGLES() || context->format().profile() != QSurfaceFormat::CoreProfile) { |
258 | externalFormat = internalFormat = GL_ALPHA; |
259 | pixelType = GL_UNSIGNED_BYTE; |
260 | targetFormat = image.format(); |
261 | } else if (funcs->hasOpenGLExtension(extension: QOpenGLExtensions::TextureSwizzle)) { |
262 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_ALPHA); |
263 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_ZERO); |
264 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_ZERO); |
265 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ZERO); |
266 | externalFormat = internalFormat = GL_RED; |
267 | pixelType = GL_UNSIGNED_BYTE; |
268 | targetFormat = image.format(); |
269 | } |
270 | break; |
271 | case QImage::Format_Grayscale8: |
272 | if (sRgbBinding) { |
273 | // Always needs conversion |
274 | break; |
275 | } else if (options & UseRedForAlphaAndLuminanceBindOption) { |
276 | externalFormat = internalFormat = GL_RED; |
277 | pixelType = GL_UNSIGNED_BYTE; |
278 | targetFormat = image.format(); |
279 | } else if (context->isOpenGLES() || context->format().profile() != QSurfaceFormat::CoreProfile) { |
280 | externalFormat = internalFormat = GL_LUMINANCE; |
281 | pixelType = GL_UNSIGNED_BYTE; |
282 | targetFormat = image.format(); |
283 | } else if (funcs->hasOpenGLExtension(extension: QOpenGLExtensions::TextureSwizzle)) { |
284 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED); |
285 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_RED); |
286 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED); |
287 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ONE); |
288 | externalFormat = internalFormat = GL_RED; |
289 | pixelType = GL_UNSIGNED_BYTE; |
290 | targetFormat = image.format(); |
291 | } |
292 | break; |
293 | case QImage::Format_Grayscale16: |
294 | if (sRgbBinding) { |
295 | // Always needs conversion |
296 | break; |
297 | } else if (options & UseRedForAlphaAndLuminanceBindOption) { |
298 | externalFormat = internalFormat = GL_RED; |
299 | pixelType = GL_UNSIGNED_SHORT; |
300 | targetFormat = image.format(); |
301 | } else if (context->isOpenGLES() || context->format().profile() != QSurfaceFormat::CoreProfile) { |
302 | externalFormat = internalFormat = GL_LUMINANCE; |
303 | pixelType = GL_UNSIGNED_SHORT; |
304 | targetFormat = image.format(); |
305 | } else if (funcs->hasOpenGLExtension(extension: QOpenGLExtensions::TextureSwizzle)) { |
306 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED); |
307 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_RED); |
308 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED); |
309 | funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ONE); |
310 | externalFormat = internalFormat = GL_RED; |
311 | pixelType = GL_UNSIGNED_SHORT; |
312 | targetFormat = image.format(); |
313 | } |
314 | break; |
315 | default: |
316 | break; |
317 | } |
318 | |
319 | // If no direct upload was detected above, convert to RGBA8888 and upload that |
320 | if (targetFormat == QImage::Format_Invalid) { |
321 | externalFormat = internalFormat = GL_RGBA; |
322 | pixelType = GL_UNSIGNED_BYTE; |
323 | if (!image.hasAlphaChannel()) |
324 | targetFormat = QImage::Format_RGBX8888; |
325 | else |
326 | targetFormat = QImage::Format_RGBA8888; |
327 | } |
328 | |
329 | if (options & PremultipliedAlphaBindOption) { |
330 | if (targetFormat == QImage::Format_ARGB32) |
331 | targetFormat = QImage::Format_ARGB32_Premultiplied; |
332 | else if (targetFormat == QImage::Format_RGBA8888) |
333 | targetFormat = QImage::Format_RGBA8888_Premultiplied; |
334 | else if (targetFormat == QImage::Format_RGBA64) |
335 | targetFormat = QImage::Format_RGBA64_Premultiplied; |
336 | } else { |
337 | if (targetFormat == QImage::Format_ARGB32_Premultiplied) |
338 | targetFormat = QImage::Format_ARGB32; |
339 | else if (targetFormat == QImage::Format_RGBA8888_Premultiplied) |
340 | targetFormat = QImage::Format_RGBA8888; |
341 | else if (targetFormat == QImage::Format_RGBA64_Premultiplied) |
342 | targetFormat = QImage::Format_RGBA64; |
343 | } |
344 | |
345 | if (sRgbBinding) { |
346 | Q_ASSERT(internalFormat == GL_RGBA || internalFormat == GL_RGB); |
347 | if (image.hasAlphaChannel()) |
348 | internalFormat = GL_SRGB_ALPHA; |
349 | else |
350 | internalFormat = GL_SRGB; |
351 | } |
352 | |
353 | if (image.format() != targetFormat) |
354 | tx = image.convertToFormat(f: targetFormat); |
355 | else |
356 | tx = image; |
357 | |
358 | QSize newSize = tx.size(); |
359 | if (!maxSize.isEmpty()) |
360 | newSize = newSize.boundedTo(otherSize: maxSize); |
361 | if (options & PowerOfTwoBindOption) { |
362 | newSize.setWidth(qNextPowerOfTwo(v: newSize.width() - 1)); |
363 | newSize.setHeight(qNextPowerOfTwo(v: newSize.height() - 1)); |
364 | } |
365 | |
366 | if (newSize != tx.size()) |
367 | tx = tx.scaled(s: newSize, aspectMode: Qt::IgnoreAspectRatio, mode: Qt::SmoothTransformation); |
368 | |
369 | // Handle cases where the QImage is actually a sub image of its image data: |
370 | qsizetype naturalBpl = ((qsizetype(tx.width()) * tx.depth() + 31) >> 5) << 2; |
371 | if (tx.bytesPerLine() != naturalBpl) |
372 | tx = tx.copy(rect: tx.rect()); |
373 | |
374 | funcs->glTexImage2D(target, level: 0, internalformat: internalFormat, width: tx.width(), height: tx.height(), border: 0, format: externalFormat, type: pixelType, pixels: tx.constBits()); |
375 | |
376 | qsizetype cost = qint64(tx.width()) * tx.height() * tx.depth() / 8; |
377 | |
378 | return cost; |
379 | } |
380 | |
381 | QT_END_NAMESPACE |
382 | |