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1 | // Created by: Kirill GAVRILOV |
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2 | // Copyright (c) 2014 OPEN CASCADE SAS |
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3 | // |
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4 | // This file is part of Open CASCADE Technology software library. |
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5 | // |
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6 | // This library is free software; you can redistribute it and / or modify it |
7 | // under the terms of the GNU Lesser General Public version 2.1 as published |
8 | // by the Free Software Foundation, with special exception defined in the file |
9 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
10 | // distribution for complete text of the license and disclaimer of any warranty. |
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11 | // |
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12 | // Alternatively, this file may be used under the terms of Open CASCADE |
13 | // commercial license or contractual agreement. |
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14 | |
15 | #include <OpenGl_Texture.hxx> |
16 | |
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17 | #include <OpenGl_ExtFBO.hxx> |
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18 | #include <OpenGl_Context.hxx> |
19 | #include <Graphic3d_TextureParams.hxx> |
20 | #include <Standard_Assert.hxx> |
21 | #include <Image_PixMap.hxx> |
22 | |
23 | IMPLEMENT_STANDARD_HANDLE (OpenGl_Texture, OpenGl_Resource) |
24 | IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Texture, OpenGl_Resource) |
25 | |
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26 | //! Simple class to reset unpack alignment settings |
27 | struct OpenGl_UnpackAlignmentSentry |
28 | { |
29 | |
30 | //! Reset unpack alignment settings to safe values |
31 | void Reset() |
32 | { |
33 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
34 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
35 | } |
36 | |
37 | ~OpenGl_UnpackAlignmentSentry() |
38 | { |
39 | Reset(); |
40 | } |
41 | |
42 | }; |
43 | |
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44 | // ======================================================================= |
45 | // function : OpenGl_Texture |
46 | // purpose : |
47 | // ======================================================================= |
48 | OpenGl_Texture::OpenGl_Texture (const Handle(Graphic3d_TextureParams)& theParams) |
49 | : OpenGl_Resource(), |
50 | myTextureId (NO_TEXTURE), |
51 | myTarget (GL_TEXTURE_2D), |
52 | mySizeX (0), |
53 | mySizeY (0), |
54 | myTextFormat (GL_FLOAT), |
55 | myHasMipmaps (Standard_False), |
56 | myParams (theParams) |
57 | { |
58 | if (myParams.IsNull()) |
59 | { |
60 | myParams = new Graphic3d_TextureParams(); |
61 | } |
62 | } |
63 | |
64 | // ======================================================================= |
65 | // function : ~OpenGl_Texture |
66 | // purpose : |
67 | // ======================================================================= |
68 | OpenGl_Texture::~OpenGl_Texture() |
69 | { |
70 | Release (NULL); |
71 | } |
72 | |
73 | // ======================================================================= |
74 | // function : HasMipmaps |
75 | // purpose : |
76 | // ======================================================================= |
77 | const Standard_Boolean OpenGl_Texture::HasMipmaps() const |
78 | { |
79 | return myHasMipmaps; |
80 | } |
81 | |
82 | // ======================================================================= |
83 | // function : GetParams |
84 | // purpose : |
85 | // ======================================================================= |
86 | const Handle(Graphic3d_TextureParams)& OpenGl_Texture::GetParams() const |
87 | { |
88 | return myParams; |
89 | } |
90 | |
91 | // ======================================================================= |
92 | // function : SetParams |
93 | // purpose : |
94 | // ======================================================================= |
95 | void OpenGl_Texture::SetParams (const Handle(Graphic3d_TextureParams)& theParams) |
96 | { |
97 | myParams = theParams; |
98 | } |
99 | |
100 | // ======================================================================= |
101 | // function : Create |
102 | // purpose : |
103 | // ======================================================================= |
104 | bool OpenGl_Texture::Create (const Handle(OpenGl_Context)& ) |
105 | { |
106 | if (myTextureId == NO_TEXTURE) |
107 | { |
108 | glGenTextures (1, &myTextureId); |
109 | } |
110 | return myTextureId != NO_TEXTURE; |
111 | } |
112 | |
113 | // ======================================================================= |
114 | // function : Release |
115 | // purpose : |
116 | // ======================================================================= |
117 | void OpenGl_Texture::Release (const OpenGl_Context* theGlCtx) |
118 | { |
119 | if (myTextureId == NO_TEXTURE) |
120 | { |
121 | return; |
122 | } |
123 | |
124 | // application can not handle this case by exception - this is bug in code |
125 | Standard_ASSERT_RETURN (theGlCtx != NULL, |
126 | "OpenGl_Texture destroyed without GL context! Possible GPU memory leakage...",); |
127 | |
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128 | if (theGlCtx->IsValid()) |
129 | { |
130 | glDeleteTextures (1, &myTextureId); |
131 | } |
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132 | myTextureId = NO_TEXTURE; |
133 | mySizeX = mySizeY = 0; |
134 | } |
135 | |
136 | // ======================================================================= |
137 | // function : Bind |
138 | // purpose : |
139 | // ======================================================================= |
140 | void OpenGl_Texture::Bind (const Handle(OpenGl_Context)& theCtx, |
141 | const GLenum theTextureUnit) const |
142 | { |
143 | if (theCtx->IsGlGreaterEqual (1, 3)) |
144 | { |
145 | theCtx->core13->glActiveTexture (theTextureUnit); |
146 | } |
147 | glBindTexture (myTarget, myTextureId); |
148 | } |
149 | |
150 | // ======================================================================= |
151 | // function : Unbind |
152 | // purpose : |
153 | // ======================================================================= |
154 | void OpenGl_Texture::Unbind (const Handle(OpenGl_Context)& theCtx, |
155 | const GLenum theTextureUnit) const |
156 | { |
157 | if (theCtx->IsGlGreaterEqual (1, 3)) |
158 | { |
159 | theCtx->core13->glActiveTexture (theTextureUnit); |
160 | } |
161 | glBindTexture (myTarget, NO_TEXTURE); |
162 | } |
163 | |
164 | // ======================================================================= |
165 | // function : Init |
166 | // purpose : |
167 | // ======================================================================= |
168 | bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx, |
169 | const Image_PixMap& theImage, |
170 | const Graphic3d_TypeOfTexture theType) |
171 | { |
172 | myHasMipmaps = Standard_False; |
173 | if (theImage.IsEmpty() || !Create (theCtx)) |
174 | { |
175 | return false; |
176 | } |
177 | |
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178 | myTextFormat = GL_RGBA8; |
179 | GLenum aPixelFormat = 0; |
180 | GLenum aDataType = 0; |
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181 | switch (theImage.Format()) |
182 | { |
183 | case Image_PixMap::ImgGrayF: |
184 | { |
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185 | myTextFormat = GL_ALPHA8; // GL_R8, GL_R32F |
186 | aPixelFormat = GL_ALPHA; // GL_RED |
187 | aDataType = GL_FLOAT; |
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188 | break; |
189 | } |
190 | case Image_PixMap::ImgRGBAF: |
191 | { |
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192 | myTextFormat = GL_RGBA8; // GL_RGBA32F |
193 | aPixelFormat = GL_RGBA; |
194 | aDataType = GL_FLOAT; |
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195 | break; |
196 | } |
197 | case Image_PixMap::ImgBGRAF: |
198 | { |
199 | if (!theCtx->IsGlGreaterEqual (1, 2) && !theCtx->extBgra) |
200 | { |
201 | return false; |
202 | } |
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203 | myTextFormat = GL_RGBA8; // GL_RGBA32F |
204 | aPixelFormat = GL_BGRA; // equals to GL_BGRA_EXT |
205 | aDataType = GL_FLOAT; |
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206 | break; |
207 | } |
208 | case Image_PixMap::ImgRGBF: |
209 | { |
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210 | myTextFormat = GL_RGB8; // GL_RGB32F |
211 | aPixelFormat = GL_RGB; |
212 | aDataType = GL_FLOAT; |
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213 | break; |
214 | } |
215 | case Image_PixMap::ImgBGRF: |
216 | { |
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217 | myTextFormat = GL_RGB8; // GL_RGB32F |
218 | aPixelFormat = GL_BGR; // equals to GL_BGR_EXT |
219 | aDataType = GL_FLOAT; |
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220 | break; |
221 | } |
222 | case Image_PixMap::ImgRGBA: |
223 | { |
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224 | myTextFormat = GL_RGBA8; |
225 | aPixelFormat = GL_RGBA; |
226 | aDataType = GL_UNSIGNED_BYTE; |
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227 | break; |
228 | } |
229 | case Image_PixMap::ImgBGRA: |
230 | { |
231 | if (!theCtx->IsGlGreaterEqual (1, 2) && !theCtx->extBgra) |
232 | { |
233 | return false; |
234 | } |
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235 | myTextFormat = GL_RGBA8; |
236 | aPixelFormat = GL_BGRA; // equals to GL_BGRA_EXT |
237 | aDataType = GL_UNSIGNED_BYTE; |
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238 | break; |
239 | } |
240 | case Image_PixMap::ImgRGB32: |
241 | { |
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242 | myTextFormat = GL_RGB8; |
243 | aPixelFormat = GL_RGBA; |
244 | aDataType = GL_UNSIGNED_BYTE; |
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245 | break; |
246 | } |
247 | case Image_PixMap::ImgBGR32: |
248 | { |
249 | if (!theCtx->IsGlGreaterEqual (1, 2) && !theCtx->extBgra) |
250 | { |
251 | return false; |
252 | } |
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253 | myTextFormat = GL_RGB8; |
254 | aPixelFormat = GL_BGRA; // equals to GL_BGRA_EXT |
255 | aDataType = GL_UNSIGNED_BYTE; |
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256 | break; |
257 | } |
258 | case Image_PixMap::ImgRGB: |
259 | { |
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260 | myTextFormat = GL_RGB8; |
261 | aPixelFormat = GL_RGB; |
262 | aDataType = GL_UNSIGNED_BYTE; |
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263 | break; |
264 | } |
265 | case Image_PixMap::ImgBGR: |
266 | { |
267 | if (!theCtx->IsGlGreaterEqual (1, 2) && !theCtx->extBgra) |
268 | { |
269 | return false; |
270 | } |
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271 | myTextFormat = GL_RGB8; |
272 | aPixelFormat = GL_BGR; // equals to GL_BGR_EXT |
273 | aDataType = GL_UNSIGNED_BYTE; |
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274 | break; |
275 | } |
276 | case Image_PixMap::ImgGray: |
277 | { |
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278 | myTextFormat = GL_ALPHA8; // GL_R8 |
279 | aPixelFormat = GL_ALPHA; // GL_RED |
280 | aDataType = GL_UNSIGNED_BYTE; |
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281 | break; |
282 | } |
283 | default: |
284 | { |
285 | return false; |
286 | } |
287 | } |
288 | |
289 | const GLsizei aMaxSize = theCtx->MaxTextureSize(); |
290 | const GLsizei aWidth = (GLsizei )theImage.SizeX(); |
291 | const GLsizei aHeight = (GLsizei )theImage.SizeY(); |
292 | |
293 | // Notice that formally general NPOT textures are required by OpenGL 2.0 specifications |
294 | // however some hardware (NV30 - GeForce FX, RadeOn 9xxx and Xxxx) supports GLSL but not NPOT! |
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295 | // Trying to create NPOT textures on such hardware will not fail |
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296 | // but driver will fall back into software rendering, |
297 | const bool toForceP2 = !theCtx->IsGlGreaterEqual (3, 0) && !theCtx->arbNPTW; |
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298 | const GLsizei aWidthOut = toForceP2 ? OpenGl_Context::GetPowerOfTwo (aWidth, aMaxSize) : Min (aWidth, aMaxSize); |
299 | const GLsizei aHeightOut = toForceP2 ? OpenGl_Context::GetPowerOfTwo (aHeight, aMaxSize) : Min (aHeight, aMaxSize); |
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300 | |
301 | GLint aTestWidth = 0; |
302 | GLint aTestHeight = 0; |
303 | |
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304 | // setup the alignment |
305 | OpenGl_UnpackAlignmentSentry anUnpackSentry; |
306 | const GLint anAligment = Min ((GLint )theImage.MaxRowAligmentBytes(), 8); // OpenGL supports alignment upto 8 bytes |
307 | glPixelStorei (GL_UNPACK_ALIGNMENT, anAligment); |
308 | |
309 | // notice that GL_UNPACK_ROW_LENGTH is not available on OpenGL ES 2.0 without GL_EXT_unpack_subimage extension |
310 | const GLint anExtraBytes = GLint(theImage.RowExtraBytes()); |
311 | const GLint aPixelsWidth = GLint(theImage.SizeRowBytes() / theImage.SizePixelBytes()); |
312 | glPixelStorei (GL_UNPACK_ROW_LENGTH, (anExtraBytes >= anAligment) ? aPixelsWidth : 0); |
313 | |
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314 | switch (theType) |
315 | { |
316 | case Graphic3d_TOT_1D: |
317 | { |
318 | myTarget = GL_TEXTURE_1D; |
319 | Bind (theCtx); |
320 | glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
321 | glTexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
322 | |
323 | Image_PixMap aCopy; |
324 | GLvoid* aDataPtr = (GLvoid* )theImage.Data(); |
325 | if (aWidth != aWidthOut) |
326 | { |
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327 | glPixelStorei (GL_PACK_ALIGNMENT, 1); |
328 | glPixelStorei (GL_PACK_ROW_LENGTH, 0); |
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329 | if (!aCopy.InitTrash (theImage.Format(), Standard_Size(aWidthOut), 1) |
330 | || gluScaleImage (aPixelFormat, |
331 | aWidth, 1, aDataType, theImage.Data(), |
332 | aWidthOut, 1, aDataType, aCopy.ChangeData()) != 0) |
333 | { |
334 | Unbind (theCtx); |
335 | return false; |
336 | } |
337 | |
338 | aDataPtr = (GLvoid* )aCopy.Data(); |
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339 | anUnpackSentry.Reset(); |
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340 | } |
341 | |
342 | // use proxy to check texture could be created or not |
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343 | glTexImage1D (GL_PROXY_TEXTURE_1D, 0, myTextFormat, |
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344 | aWidthOut, 0, |
345 | aPixelFormat, aDataType, NULL); |
346 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &aTestWidth); |
347 | if (aTestWidth == 0) |
348 | { |
349 | // no memory or broken input parameters |
350 | Unbind (theCtx); |
351 | return false; |
352 | } |
353 | |
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354 | glTexImage1D (GL_TEXTURE_1D, 0, myTextFormat, |
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355 | aWidthOut, 0, |
356 | aPixelFormat, aDataType, aDataPtr); |
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357 | if (glGetError() != GL_NO_ERROR) |
358 | { |
359 | Unbind (theCtx); |
360 | return false; |
361 | } |
362 | |
363 | mySizeX = aWidthOut; |
364 | mySizeY = 1; |
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365 | |
366 | Unbind (theCtx); |
367 | return true; |
368 | } |
369 | case Graphic3d_TOT_2D: |
370 | { |
371 | myTarget = GL_TEXTURE_2D; |
372 | Bind (theCtx); |
373 | glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
374 | glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
375 | |
376 | Image_PixMap aCopy; |
377 | GLvoid* aDataPtr = (GLvoid* )theImage.Data(); |
378 | if (aWidth != aWidthOut || aHeight != aHeightOut) |
379 | { |
380 | // scale texture |
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381 | glPixelStorei (GL_PACK_ALIGNMENT, 1); |
382 | glPixelStorei (GL_PACK_ROW_LENGTH, 0); |
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383 | if (!aCopy.InitTrash (theImage.Format(), Standard_Size(aWidthOut), Standard_Size(aHeightOut)) |
384 | || gluScaleImage (aPixelFormat, |
385 | aWidth, aHeight, aDataType, theImage.Data(), |
386 | aWidthOut, aHeightOut, aDataType, aCopy.ChangeData()) != 0) |
387 | { |
388 | Unbind (theCtx); |
389 | return false; |
390 | } |
391 | |
392 | aDataPtr = (GLvoid* )aCopy.Data(); |
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393 | anUnpackSentry.Reset(); |
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394 | } |
395 | |
396 | // use proxy to check texture could be created or not |
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397 | glTexImage2D (GL_PROXY_TEXTURE_2D, 0, myTextFormat, |
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398 | aWidthOut, aHeightOut, 0, |
399 | aPixelFormat, aDataType, NULL); |
400 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &aTestWidth); |
401 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &aTestHeight); |
402 | if (aTestWidth == 0 || aTestHeight == 0) |
403 | { |
404 | // no memory or broken input parameters |
405 | Unbind (theCtx); |
406 | return false; |
407 | } |
408 | |
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409 | glTexImage2D (GL_TEXTURE_2D, 0, myTextFormat, |
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410 | aWidthOut, aHeightOut, 0, |
411 | aPixelFormat, aDataType, aDataPtr); |
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412 | if (glGetError() != GL_NO_ERROR) |
413 | { |
414 | Unbind (theCtx); |
415 | return false; |
416 | } |
417 | |
418 | mySizeX = aWidthOut; |
419 | mySizeY = aHeightOut; |
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420 | |
421 | Unbind (theCtx); |
422 | return true; |
423 | } |
424 | case Graphic3d_TOT_2D_MIPMAP: |
425 | { |
426 | myTarget = GL_TEXTURE_2D; |
427 | myHasMipmaps = Standard_True; |
428 | Bind (theCtx); |
429 | glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR); |
430 | glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
431 | |
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432 | if (theCtx->extFBO != NULL |
433 | && aWidth == aWidthOut && aHeight == aHeightOut) |
434 | { |
435 | // use proxy to check texture could be created or not |
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436 | glTexImage2D (GL_PROXY_TEXTURE_2D, 0, myTextFormat, |
1a7dfdb7 |
437 | aWidthOut, aHeightOut, 0, |
438 | aPixelFormat, aDataType, NULL); |
439 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &aTestWidth); |
440 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &aTestHeight); |
441 | if (aTestWidth == 0 || aTestHeight == 0) |
442 | { |
443 | // no memory or broken input parameters |
444 | Unbind (theCtx); |
445 | return false; |
446 | } |
447 | |
448 | // upload main picture |
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449 | glTexImage2D (GL_TEXTURE_2D, 0, myTextFormat, |
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450 | aWidthOut, aHeightOut, 0, |
451 | aPixelFormat, aDataType, theImage.Data()); |
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452 | if (glGetError() != GL_NO_ERROR) |
453 | { |
454 | Unbind (theCtx); |
455 | return false; |
456 | } |
457 | |
458 | mySizeX = aWidthOut; |
459 | mySizeY = aHeightOut; |
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460 | |
461 | // generate mipmaps |
462 | //glHint (GL_GENERATE_MIPMAP_HINT, GL_NICEST); |
463 | theCtx->extFBO->glGenerateMipmapEXT (GL_TEXTURE_2D); |
464 | |
465 | Unbind (theCtx); |
466 | return true; |
467 | } |
468 | else |
469 | { |
a577aaab |
470 | bool isCreated = gluBuild2DMipmaps (GL_TEXTURE_2D, myTextFormat, |
1a7dfdb7 |
471 | aWidth, aHeight, |
472 | aPixelFormat, aDataType, theImage.Data()) == 0; |
a174a3c5 |
473 | if (isCreated) |
474 | { |
475 | glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &mySizeX); |
476 | glGetTexLevelParameteriv (GL_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &mySizeY); |
477 | } |
478 | |
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479 | Unbind (theCtx); |
480 | return isCreated; |
481 | } |
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482 | } |
483 | default: |
484 | { |
485 | return false; |
486 | } |
487 | } |
488 | } |
68333c8f |
489 | |
490 | // ======================================================================= |
491 | // function : InitRectangle |
492 | // purpose : |
493 | // ======================================================================= |
494 | bool OpenGl_Texture::InitRectangle (const Handle(OpenGl_Context)& theCtx, |
495 | const Standard_Integer theSizeX, |
496 | const Standard_Integer theSizeY, |
497 | const OpenGl_TextureFormat& theFormat) |
498 | { |
499 | if (!Create (theCtx) || !theCtx->IsGlGreaterEqual (3, 0)) |
500 | { |
501 | return false; |
502 | } |
503 | |
504 | myTarget = GL_TEXTURE_RECTANGLE; |
505 | |
506 | const GLsizei aSizeX = Min (theCtx->MaxTextureSize(), theSizeX); |
507 | const GLsizei aSizeY = Min (theCtx->MaxTextureSize(), theSizeY); |
508 | |
509 | Bind (theCtx); |
510 | |
511 | if (myParams->Filter() == Graphic3d_TOTF_NEAREST) |
512 | { |
513 | glTexParameteri (myTarget, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
514 | glTexParameteri (myTarget, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
515 | } |
516 | else |
517 | { |
518 | glTexParameteri (myTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
519 | glTexParameteri (myTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
520 | } |
521 | |
522 | myTextFormat = theFormat.Internal(); |
523 | |
524 | glTexImage2D (GL_PROXY_TEXTURE_RECTANGLE, |
525 | 0, |
526 | myTextFormat, |
527 | aSizeX, |
528 | aSizeY, |
529 | 0, |
530 | theFormat.Format(), |
531 | GL_FLOAT, |
532 | NULL); |
533 | |
534 | GLint aTestSizeX = 0; |
535 | GLint aTestSizeY = 0; |
536 | |
537 | glGetTexLevelParameteriv ( |
538 | GL_PROXY_TEXTURE_RECTANGLE, 0, GL_TEXTURE_WIDTH, &aTestSizeX); |
539 | glGetTexLevelParameteriv ( |
540 | GL_PROXY_TEXTURE_RECTANGLE, 0, GL_TEXTURE_HEIGHT, &aTestSizeY); |
541 | |
542 | if (aTestSizeX == 0 || aTestSizeY == 0) |
543 | { |
544 | Unbind (theCtx); |
545 | return false; |
546 | } |
547 | |
548 | glTexImage2D (myTarget, |
549 | 0, |
550 | myTextFormat, |
551 | aSizeX, |
552 | aSizeY, |
553 | 0, |
554 | theFormat.Format(), |
555 | GL_FLOAT, |
556 | NULL); |
557 | |
558 | if (glGetError() != GL_NO_ERROR) |
559 | { |
560 | Unbind (theCtx); |
561 | return false; |
562 | } |
563 | |
564 | mySizeX = aSizeX; |
565 | mySizeY = aSizeY; |
566 | |
567 | Unbind (theCtx); |
568 | return true; |
569 | } |