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1 | // Created by: Kirill GAVRILOV |
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2 | // Copyright (c) 2013-2014 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 under |
7 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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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_ArbFBO.hxx> |
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18 | #include <OpenGl_Context.hxx> |
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19 | #include <OpenGl_GlCore32.hxx> |
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20 | #include <OpenGl_Sampler.hxx> |
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21 | #include <Graphic3d_TextureParams.hxx> |
fa4dcbe0 |
22 | #include <TCollection_ExtendedString.hxx> |
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23 | #include <Standard_Assert.hxx> |
24 | #include <Image_PixMap.hxx> |
25 | |
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26 | IMPLEMENT_STANDARD_RTTIEXT(OpenGl_Texture, OpenGl_NamedResource) |
92efcf78 |
27 | |
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28 | //! Simple class to reset unpack alignment settings |
29 | struct OpenGl_UnpackAlignmentSentry |
30 | { |
31 | |
32 | //! Reset unpack alignment settings to safe values |
90fd6145 |
33 | static void Reset() |
74706083 |
34 | { |
35 | glPixelStorei (GL_UNPACK_ALIGNMENT, 1); |
ca3c13d1 |
36 | #if !defined(GL_ES_VERSION_2_0) |
74706083 |
37 | glPixelStorei (GL_UNPACK_ROW_LENGTH, 0); |
ca3c13d1 |
38 | #endif |
74706083 |
39 | } |
40 | |
90fd6145 |
41 | OpenGl_UnpackAlignmentSentry() {} |
42 | |
74706083 |
43 | ~OpenGl_UnpackAlignmentSentry() |
44 | { |
45 | Reset(); |
46 | } |
47 | |
48 | }; |
49 | |
bf75be98 |
50 | // ======================================================================= |
51 | // function : OpenGl_Texture |
52 | // purpose : |
53 | // ======================================================================= |
cc8cbabe |
54 | OpenGl_Texture::OpenGl_Texture (const TCollection_AsciiString& theResourceId, |
55 | const Handle(Graphic3d_TextureParams)& theParams) |
56 | : OpenGl_NamedResource (theResourceId), |
57 | mySampler (new OpenGl_Sampler (theParams)), |
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58 | myRevision (0), |
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59 | myTextureId (NO_TEXTURE), |
60 | myTarget (GL_TEXTURE_2D), |
61 | mySizeX (0), |
62 | mySizeY (0), |
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63 | mySizeZ (0), |
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64 | myTextFormat (GL_RGBA), |
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65 | mySizedFormat(GL_RGBA8), |
66 | myNbSamples (1), |
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67 | myHasMipmaps (Standard_False), |
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68 | myIsAlpha (false) |
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69 | { |
cc8cbabe |
70 | // |
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71 | } |
72 | |
73 | // ======================================================================= |
74 | // function : ~OpenGl_Texture |
75 | // purpose : |
76 | // ======================================================================= |
77 | OpenGl_Texture::~OpenGl_Texture() |
78 | { |
79 | Release (NULL); |
80 | } |
81 | |
bf75be98 |
82 | // ======================================================================= |
83 | // function : Create |
84 | // purpose : |
85 | // ======================================================================= |
cc8cbabe |
86 | bool OpenGl_Texture::Create (const Handle(OpenGl_Context)& theCtx) |
bf75be98 |
87 | { |
cc8cbabe |
88 | if (myTextureId != NO_TEXTURE) |
89 | { |
90 | return true; |
91 | } |
92 | |
93 | theCtx->core11fwd->glGenTextures (1, &myTextureId); |
bf75be98 |
94 | if (myTextureId == NO_TEXTURE) |
95 | { |
cc8cbabe |
96 | return false; |
bf75be98 |
97 | } |
cc8cbabe |
98 | |
99 | //mySampler->Create (theCtx); // do not create sampler object by default |
100 | return true; |
bf75be98 |
101 | } |
102 | |
103 | // ======================================================================= |
104 | // function : Release |
105 | // purpose : |
106 | // ======================================================================= |
10b9c7df |
107 | void OpenGl_Texture::Release (OpenGl_Context* theGlCtx) |
bf75be98 |
108 | { |
cc8cbabe |
109 | mySampler->Release (theGlCtx); |
bf75be98 |
110 | if (myTextureId == NO_TEXTURE) |
111 | { |
112 | return; |
113 | } |
114 | |
115 | // application can not handle this case by exception - this is bug in code |
116 | Standard_ASSERT_RETURN (theGlCtx != NULL, |
117 | "OpenGl_Texture destroyed without GL context! Possible GPU memory leakage...",); |
118 | |
ec2eeb2d |
119 | if (theGlCtx->IsValid()) |
120 | { |
121 | glDeleteTextures (1, &myTextureId); |
122 | } |
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123 | myTextureId = NO_TEXTURE; |
d2edda76 |
124 | mySizeX = mySizeY = mySizeZ = 0; |
bf75be98 |
125 | } |
126 | |
cc8cbabe |
127 | // ======================================================================= |
128 | // function : applyDefaultSamplerParams |
129 | // purpose : |
130 | // ======================================================================= |
131 | void OpenGl_Texture::applyDefaultSamplerParams (const Handle(OpenGl_Context)& theCtx) |
132 | { |
133 | OpenGl_Sampler::applySamplerParams (theCtx, mySampler->Parameters(), NULL, myTarget, myHasMipmaps); |
134 | if (mySampler->IsValid() && !mySampler->IsImmutable()) |
135 | { |
136 | OpenGl_Sampler::applySamplerParams (theCtx, mySampler->Parameters(), mySampler.get(), myTarget, myHasMipmaps); |
137 | } |
138 | } |
139 | |
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140 | // ======================================================================= |
141 | // function : Bind |
142 | // purpose : |
143 | // ======================================================================= |
144 | void OpenGl_Texture::Bind (const Handle(OpenGl_Context)& theCtx, |
cc8cbabe |
145 | const Graphic3d_TextureUnit theTextureUnit) const |
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146 | { |
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147 | if (theCtx->core15fwd != NULL) |
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148 | { |
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149 | theCtx->core15fwd->glActiveTexture (GL_TEXTURE0 + theTextureUnit); |
bf75be98 |
150 | } |
cc8cbabe |
151 | mySampler->Bind (theCtx, theTextureUnit); |
bf75be98 |
152 | glBindTexture (myTarget, myTextureId); |
153 | } |
154 | |
155 | // ======================================================================= |
156 | // function : Unbind |
157 | // purpose : |
158 | // ======================================================================= |
159 | void OpenGl_Texture::Unbind (const Handle(OpenGl_Context)& theCtx, |
cc8cbabe |
160 | const Graphic3d_TextureUnit theTextureUnit) const |
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161 | { |
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162 | if (theCtx->core15fwd != NULL) |
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163 | { |
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164 | theCtx->core15fwd->glActiveTexture (GL_TEXTURE0 + theTextureUnit); |
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165 | } |
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166 | mySampler->Unbind (theCtx, theTextureUnit); |
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167 | glBindTexture (myTarget, NO_TEXTURE); |
168 | } |
169 | |
cc8cbabe |
170 | //======================================================================= |
171 | //function : InitSamplerObject |
172 | //purpose : |
173 | //======================================================================= |
174 | bool OpenGl_Texture::InitSamplerObject (const Handle(OpenGl_Context)& theCtx) |
175 | { |
176 | return myTextureId != NO_TEXTURE |
177 | && mySampler->Init (theCtx, *this); |
178 | } |
179 | |
18f4e8e2 |
180 | // ======================================================================= |
181 | // function : Init |
182 | // purpose : |
183 | // ======================================================================= |
184 | bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx, |
ba00aab7 |
185 | const OpenGl_TextureFormat& theFormat, |
186 | const Graphic3d_Vec2i& theSizeXY, |
18f4e8e2 |
187 | const Graphic3d_TypeOfTexture theType, |
188 | const Image_PixMap* theImage) |
189 | { |
ba00aab7 |
190 | if (theSizeXY.x() < 1 |
191 | || theSizeXY.y() < 1) |
66d1cdc6 |
192 | { |
193 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
194 | "Error: texture of 0 size cannot be created."); |
ba00aab7 |
195 | Release (theCtx.get()); |
66d1cdc6 |
196 | return false; |
197 | } |
198 | |
d2edda76 |
199 | #if !defined(GL_ES_VERSION_2_0) |
200 | const GLenum aTarget = theType == Graphic3d_TOT_1D |
201 | ? GL_TEXTURE_1D |
202 | : GL_TEXTURE_2D; |
203 | #else |
204 | const GLenum aTarget = GL_TEXTURE_2D; |
205 | #endif |
206 | const Standard_Boolean toCreateMipMaps = (theType == Graphic3d_TOT_2D_MIPMAP); |
207 | const bool toPatchExisting = IsValid() |
ba00aab7 |
208 | && myTextFormat == theFormat.PixelFormat() |
d2edda76 |
209 | && myTarget == aTarget |
210 | && myHasMipmaps == toCreateMipMaps |
ba00aab7 |
211 | && mySizeX == theSizeXY.x() |
212 | && (mySizeY == theSizeXY.y() || theType == Graphic3d_TOT_1D); |
18f4e8e2 |
213 | if (!Create (theCtx)) |
214 | { |
ba00aab7 |
215 | Release (theCtx.get()); |
18f4e8e2 |
216 | return false; |
217 | } |
4e1523ef |
218 | |
219 | if (theImage != NULL) |
220 | { |
dc858f4c |
221 | myIsAlpha = theImage->Format() == Image_Format_Alpha |
222 | || theImage->Format() == Image_Format_AlphaF; |
4e1523ef |
223 | } |
224 | else |
225 | { |
ba00aab7 |
226 | myIsAlpha = theFormat.PixelFormat() == GL_ALPHA; |
4e1523ef |
227 | } |
228 | |
d2edda76 |
229 | myHasMipmaps = toCreateMipMaps; |
ba00aab7 |
230 | myTextFormat = theFormat.PixelFormat(); |
231 | mySizedFormat = theFormat.InternalFormat(); |
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232 | myNbSamples = 1; |
8625ef7e |
233 | #if !defined(GL_ES_VERSION_2_0) |
ba00aab7 |
234 | const GLint anIntFormat = theFormat.InternalFormat(); |
8625ef7e |
235 | #else |
a1073ae2 |
236 | // ES 2.0 does not support sized formats and format conversions - them detected from data type |
ba00aab7 |
237 | const GLint anIntFormat = theCtx->IsGlGreaterEqual (3, 0) ? theFormat.InternalFormat() : theFormat.PixelFormat(); |
8625ef7e |
238 | #endif |
bf75be98 |
239 | |
ba00aab7 |
240 | if (theFormat.DataType() == GL_FLOAT |
241 | && !theCtx->arbTexFloat) |
ff6665dc |
242 | { |
243 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
244 | "Error: floating-point textures are not supported by hardware."); |
ba00aab7 |
245 | Release (theCtx.get()); |
ff6665dc |
246 | return false; |
247 | } |
248 | |
d2edda76 |
249 | const GLsizei aMaxSize = theCtx->MaxTextureSize(); |
ba00aab7 |
250 | if (theSizeXY.x() > aMaxSize |
251 | || theSizeXY.y() > aMaxSize) |
fa4dcbe0 |
252 | { |
ba00aab7 |
253 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
254 | TCollection_AsciiString ("Error: Texture dimension - ") + theSizeXY.x() + "x" + theSizeXY.y() |
255 | + " exceeds hardware limits (" + aMaxSize + "x" + aMaxSize + ")"); |
256 | Release (theCtx.get()); |
fa4dcbe0 |
257 | return false; |
258 | } |
259 | #if !defined(GL_ES_VERSION_2_0) |
260 | else if (!theCtx->IsGlGreaterEqual (3, 0) && !theCtx->arbNPTW) |
261 | { |
262 | // Notice that formally general NPOT textures are required by OpenGL 2.0 specifications |
263 | // however some hardware (NV30 - GeForce FX, RadeOn 9xxx and Xxxx) supports GLSL but not NPOT! |
264 | // Trying to create NPOT textures on such hardware will not fail |
265 | // but driver will fall back into software rendering, |
ba00aab7 |
266 | const GLsizei aWidthP2 = OpenGl_Context::GetPowerOfTwo (theSizeXY.x(), aMaxSize); |
267 | const GLsizei aHeightP2 = OpenGl_Context::GetPowerOfTwo (theSizeXY.y(), aMaxSize); |
268 | if (theSizeXY.x() != aWidthP2 |
269 | || (theType != Graphic3d_TOT_1D && theSizeXY.y() != aHeightP2)) |
fa4dcbe0 |
270 | { |
ba00aab7 |
271 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, |
272 | TCollection_AsciiString ("Error: NPOT Textures (") + theSizeXY.x() + "x" + theSizeXY.y() + ")" |
273 | " are not supported by hardware."); |
274 | Release (theCtx.get()); |
fa4dcbe0 |
275 | return false; |
276 | } |
277 | } |
278 | #else |
279 | else if (!theCtx->IsGlGreaterEqual (3, 0) && theType == Graphic3d_TOT_2D_MIPMAP) |
280 | { |
281 | // Mipmap NPOT textures are not supported by OpenGL ES 2.0. |
ba00aab7 |
282 | const GLsizei aWidthP2 = OpenGl_Context::GetPowerOfTwo (theSizeXY.x(), aMaxSize); |
283 | const GLsizei aHeightP2 = OpenGl_Context::GetPowerOfTwo (theSizeXY.y(), aMaxSize); |
284 | if (theSizeXY.x() != aWidthP2 |
285 | || theSizeXY.y() != aHeightP2) |
fa4dcbe0 |
286 | { |
ba00aab7 |
287 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, |
288 | TCollection_AsciiString ("Error: Mipmap NPOT Textures (") + theSizeXY.x() + "x" + theSizeXY.y() + ")" |
289 | " are not supported by OpenGL ES 2.0"); |
290 | Release (theCtx.get()); |
fa4dcbe0 |
291 | return false; |
292 | } |
293 | } |
294 | #endif |
295 | |
ca3c13d1 |
296 | #if !defined(GL_ES_VERSION_2_0) |
bf75be98 |
297 | GLint aTestWidth = 0; |
298 | GLint aTestHeight = 0; |
ca3c13d1 |
299 | #endif |
18f4e8e2 |
300 | GLvoid* aDataPtr = (theImage != NULL) ? (GLvoid* )theImage->Data() : NULL; |
bf75be98 |
301 | |
74706083 |
302 | // setup the alignment |
303 | OpenGl_UnpackAlignmentSentry anUnpackSentry; |
fa4dcbe0 |
304 | (void)anUnpackSentry; // avoid compiler warning |
305 | |
18f4e8e2 |
306 | if (aDataPtr != NULL) |
307 | { |
308 | const GLint anAligment = Min ((GLint )theImage->MaxRowAligmentBytes(), 8); // OpenGL supports alignment upto 8 bytes |
309 | glPixelStorei (GL_UNPACK_ALIGNMENT, anAligment); |
74706083 |
310 | |
ca3c13d1 |
311 | #if !defined(GL_ES_VERSION_2_0) |
18f4e8e2 |
312 | // notice that GL_UNPACK_ROW_LENGTH is not available on OpenGL ES 2.0 without GL_EXT_unpack_subimage extension |
313 | const GLint anExtraBytes = GLint(theImage->RowExtraBytes()); |
314 | const GLint aPixelsWidth = GLint(theImage->SizeRowBytes() / theImage->SizePixelBytes()); |
315 | glPixelStorei (GL_UNPACK_ROW_LENGTH, (anExtraBytes >= anAligment) ? aPixelsWidth : 0); |
ca3c13d1 |
316 | #endif |
18f4e8e2 |
317 | } |
74706083 |
318 | |
d2edda76 |
319 | myTarget = aTarget; |
bf75be98 |
320 | switch (theType) |
321 | { |
322 | case Graphic3d_TOT_1D: |
323 | { |
ca3c13d1 |
324 | #if !defined(GL_ES_VERSION_2_0) |
bf75be98 |
325 | Bind (theCtx); |
cc8cbabe |
326 | applyDefaultSamplerParams (theCtx); |
d2edda76 |
327 | if (toPatchExisting) |
328 | { |
329 | glTexSubImage1D (GL_TEXTURE_1D, 0, 0, |
ba00aab7 |
330 | theSizeXY.x(), theFormat.PixelFormat(), theFormat.DataType(), aDataPtr); |
d2edda76 |
331 | Unbind (theCtx); |
332 | return true; |
333 | } |
bf75be98 |
334 | |
bf75be98 |
335 | // use proxy to check texture could be created or not |
8625ef7e |
336 | glTexImage1D (GL_PROXY_TEXTURE_1D, 0, anIntFormat, |
ba00aab7 |
337 | theSizeXY.x(), 0, |
338 | theFormat.PixelFormat(), theFormat.DataType(), NULL); |
ff6665dc |
339 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_1D, 0, GL_TEXTURE_WIDTH, &aTestWidth); |
15669413 |
340 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_1D, 0, GL_TEXTURE_INTERNAL_FORMAT, &mySizedFormat); |
bf75be98 |
341 | if (aTestWidth == 0) |
342 | { |
343 | // no memory or broken input parameters |
344 | Unbind (theCtx); |
18f4e8e2 |
345 | Release (theCtx.operator->()); |
bf75be98 |
346 | return false; |
347 | } |
348 | |
8625ef7e |
349 | glTexImage1D (GL_TEXTURE_1D, 0, anIntFormat, |
ba00aab7 |
350 | theSizeXY.x(), 0, |
351 | theFormat.PixelFormat(), theFormat.DataType(), aDataPtr); |
a174a3c5 |
352 | if (glGetError() != GL_NO_ERROR) |
353 | { |
354 | Unbind (theCtx); |
ba00aab7 |
355 | Release (theCtx.get()); |
a174a3c5 |
356 | return false; |
357 | } |
358 | |
ba00aab7 |
359 | mySizeX = theSizeXY.x(); |
a174a3c5 |
360 | mySizeY = 1; |
bf75be98 |
361 | |
362 | Unbind (theCtx); |
363 | return true; |
ca3c13d1 |
364 | #else |
ff6665dc |
365 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
366 | "Error: 1D textures are not supported by hardware."); |
ba00aab7 |
367 | Release (theCtx.get()); |
ca3c13d1 |
368 | return false; |
369 | #endif |
bf75be98 |
370 | } |
371 | case Graphic3d_TOT_2D: |
372 | { |
bf75be98 |
373 | Bind (theCtx); |
cc8cbabe |
374 | applyDefaultSamplerParams (theCtx); |
d2edda76 |
375 | if (toPatchExisting) |
376 | { |
377 | glTexSubImage2D (GL_TEXTURE_2D, 0, |
378 | 0, 0, |
ba00aab7 |
379 | theSizeXY.x(), theSizeXY.y(), |
380 | theFormat.PixelFormat(), theFormat.DataType(), aDataPtr); |
d2edda76 |
381 | Unbind (theCtx); |
382 | return true; |
383 | } |
bf75be98 |
384 | |
ca3c13d1 |
385 | #if !defined(GL_ES_VERSION_2_0) |
bf75be98 |
386 | // use proxy to check texture could be created or not |
8625ef7e |
387 | glTexImage2D (GL_PROXY_TEXTURE_2D, 0, anIntFormat, |
ba00aab7 |
388 | theSizeXY.x(), theSizeXY.y(), 0, |
389 | theFormat.PixelFormat(), theFormat.DataType(), NULL); |
bf75be98 |
390 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &aTestWidth); |
391 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &aTestHeight); |
15669413 |
392 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &mySizedFormat); |
bf75be98 |
393 | if (aTestWidth == 0 || aTestHeight == 0) |
394 | { |
395 | // no memory or broken input parameters |
396 | Unbind (theCtx); |
ba00aab7 |
397 | Release (theCtx.get()); |
bf75be98 |
398 | return false; |
399 | } |
ca3c13d1 |
400 | #endif |
bf75be98 |
401 | |
8625ef7e |
402 | glTexImage2D (GL_TEXTURE_2D, 0, anIntFormat, |
ba00aab7 |
403 | theSizeXY.x(), theSizeXY.y(), 0, |
404 | theFormat.PixelFormat(), theFormat.DataType(), aDataPtr); |
177781da |
405 | const GLenum anErr = glGetError(); |
406 | if (anErr != GL_NO_ERROR) |
a174a3c5 |
407 | { |
177781da |
408 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
ba00aab7 |
409 | TCollection_AsciiString ("Error: 2D texture ") + theSizeXY.x() + "x" + theSizeXY.y() |
410 | + " IF: " + int(anIntFormat) + " PF: " + int(theFormat.PixelFormat()) |
411 | + " DT: " + int(theFormat.DataType()) |
177781da |
412 | + " can not be created with error " + int(anErr) + "."); |
a174a3c5 |
413 | Unbind (theCtx); |
ba00aab7 |
414 | Release (theCtx.get()); |
a174a3c5 |
415 | return false; |
416 | } |
417 | |
ba00aab7 |
418 | mySizeX = theSizeXY.x(); |
419 | mySizeY = theSizeXY.y(); |
bf75be98 |
420 | |
421 | Unbind (theCtx); |
422 | return true; |
423 | } |
424 | case Graphic3d_TOT_2D_MIPMAP: |
425 | { |
bf75be98 |
426 | Bind (theCtx); |
cc8cbabe |
427 | applyDefaultSamplerParams (theCtx); |
d2edda76 |
428 | if (toPatchExisting) |
429 | { |
430 | glTexSubImage2D (GL_TEXTURE_2D, 0, |
431 | 0, 0, |
ba00aab7 |
432 | theSizeXY.x(), theSizeXY.y(), |
433 | theFormat.PixelFormat(), theFormat.DataType(), aDataPtr); |
d2edda76 |
434 | if (theCtx->arbFBO != NULL) |
435 | { |
436 | // generate mipmaps |
437 | theCtx->arbFBO->glGenerateMipmap (GL_TEXTURE_2D); |
438 | if (glGetError() != GL_NO_ERROR) |
439 | { |
440 | Unbind (theCtx); |
ba00aab7 |
441 | Release (theCtx.get()); |
d2edda76 |
442 | return false; |
443 | } |
444 | } |
445 | |
446 | Unbind (theCtx); |
447 | return true; |
448 | } |
bf75be98 |
449 | |
fa4dcbe0 |
450 | #if !defined(GL_ES_VERSION_2_0) |
451 | // use proxy to check texture could be created or not |
452 | glTexImage2D (GL_PROXY_TEXTURE_2D, 0, anIntFormat, |
ba00aab7 |
453 | theSizeXY.x(), theSizeXY.y(), 0, |
454 | theFormat.PixelFormat(), theFormat.DataType(), NULL); |
fa4dcbe0 |
455 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_WIDTH, &aTestWidth); |
456 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_HEIGHT, &aTestHeight); |
15669413 |
457 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_2D, 0, GL_TEXTURE_INTERNAL_FORMAT, &mySizedFormat); |
fa4dcbe0 |
458 | if (aTestWidth == 0 || aTestHeight == 0) |
459 | { |
460 | // no memory or broken input parameters |
461 | Unbind (theCtx); |
ba00aab7 |
462 | Release (theCtx.get()); |
fa4dcbe0 |
463 | return false; |
464 | } |
465 | #endif |
466 | |
467 | // upload main picture |
468 | glTexImage2D (GL_TEXTURE_2D, 0, anIntFormat, |
ba00aab7 |
469 | theSizeXY.x(), theSizeXY.y(), 0, |
470 | theFormat.PixelFormat(), theFormat.DataType(), theImage->Data()); |
177781da |
471 | const GLenum aTexImgErr = glGetError(); |
472 | if (aTexImgErr != GL_NO_ERROR) |
1a7dfdb7 |
473 | { |
177781da |
474 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
ba00aab7 |
475 | TCollection_AsciiString ("Error: 2D texture ") + theSizeXY.x() + "x" + theSizeXY.y() |
476 | + " IF: " + int(anIntFormat) + " PF: " + int(theFormat.PixelFormat()) |
477 | + " DT: " + int(theFormat.DataType()) |
177781da |
478 | + " can not be created with error " + int(aTexImgErr) + "."); |
fa4dcbe0 |
479 | Unbind (theCtx); |
ba00aab7 |
480 | Release (theCtx.get()); |
fa4dcbe0 |
481 | return false; |
482 | } |
483 | |
ba00aab7 |
484 | mySizeX = theSizeXY.x(); |
485 | mySizeY = theSizeXY.y(); |
fa4dcbe0 |
486 | |
487 | if (theCtx->arbFBO != NULL) |
488 | { |
489 | // generate mipmaps |
490 | //glHint (GL_GENERATE_MIPMAP_HINT, GL_NICEST); |
491 | theCtx->arbFBO->glGenerateMipmap (GL_TEXTURE_2D); |
1a7dfdb7 |
492 | |
a174a3c5 |
493 | if (glGetError() != GL_NO_ERROR) |
494 | { |
495 | Unbind (theCtx); |
ba00aab7 |
496 | Release (theCtx.get()); |
a174a3c5 |
497 | return false; |
498 | } |
1a7dfdb7 |
499 | } |
500 | else |
501 | { |
ba00aab7 |
502 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_PORTABILITY, 0, GL_DEBUG_SEVERITY_HIGH, |
503 | "Warning: generating mipmaps requires GL_ARB_framebuffer_object extension which is missing."); |
1a7dfdb7 |
504 | Unbind (theCtx); |
ba00aab7 |
505 | Release (theCtx.get()); |
ca3c13d1 |
506 | return false; |
1a7dfdb7 |
507 | } |
fa4dcbe0 |
508 | |
509 | Unbind (theCtx); |
510 | return true; |
bf75be98 |
511 | } |
077a220c |
512 | case Graphic3d_TOT_CUBEMAP: |
513 | { |
514 | Unbind (theCtx); |
515 | Release (theCtx.get()); |
516 | return false; |
517 | } |
bf75be98 |
518 | } |
d2edda76 |
519 | |
ba00aab7 |
520 | Release (theCtx.get()); |
d2edda76 |
521 | return false; |
bf75be98 |
522 | } |
68333c8f |
523 | |
18f4e8e2 |
524 | // ======================================================================= |
525 | // function : Init |
526 | // purpose : |
527 | // ======================================================================= |
528 | bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx, |
529 | const Image_PixMap& theImage, |
ba00aab7 |
530 | const Graphic3d_TypeOfTexture theType, |
531 | const Standard_Boolean theIsColorMap) |
18f4e8e2 |
532 | { |
533 | if (theImage.IsEmpty()) |
534 | { |
ba00aab7 |
535 | Release (theCtx.get()); |
18f4e8e2 |
536 | return false; |
537 | } |
538 | |
ba00aab7 |
539 | const OpenGl_TextureFormat aFormat = OpenGl_TextureFormat::FindFormat (theCtx, theImage.Format(), theIsColorMap); |
540 | if (!aFormat.IsValid()) |
18f4e8e2 |
541 | { |
ba00aab7 |
542 | Release (theCtx.get()); |
18f4e8e2 |
543 | return false; |
544 | } |
545 | |
ba00aab7 |
546 | return Init (theCtx, aFormat, Graphic3d_Vec2i ((Standard_Integer)theImage.SizeX(), (Standard_Integer)theImage.SizeY()), |
18f4e8e2 |
547 | theType, &theImage); |
548 | } |
549 | |
077a220c |
550 | // ======================================================================= |
551 | // function : Init |
552 | // purpose : |
553 | // ======================================================================= |
554 | bool OpenGl_Texture::Init (const Handle(OpenGl_Context)& theCtx, |
555 | const Handle(Graphic3d_TextureMap)& theTextureMap) |
556 | { |
557 | if (theTextureMap.IsNull()) |
558 | { |
559 | return false; |
560 | } |
561 | |
562 | switch (theTextureMap->Type()) |
563 | { |
564 | case Graphic3d_TOT_CUBEMAP: |
565 | { |
67312b79 |
566 | return InitCubeMap (theCtx, Handle(Graphic3d_CubeMap)::DownCast(theTextureMap), |
ba00aab7 |
567 | 0, Image_Format_RGB, false, theTextureMap->IsColorMap()); |
077a220c |
568 | } |
569 | default: |
570 | { |
571 | Handle(Image_PixMap) anImage = theTextureMap->GetImage(); |
572 | if (anImage.IsNull()) |
573 | { |
574 | return false; |
575 | } |
ba00aab7 |
576 | return Init (theCtx, *anImage, theTextureMap->Type(), theTextureMap->IsColorMap()); |
077a220c |
577 | } |
578 | } |
579 | } |
580 | |
3c4b62a4 |
581 | // ======================================================================= |
582 | // function : Init2DMultisample |
583 | // purpose : |
584 | // ======================================================================= |
585 | bool OpenGl_Texture::Init2DMultisample (const Handle(OpenGl_Context)& theCtx, |
586 | const GLsizei theNbSamples, |
587 | const GLint theTextFormat, |
588 | const GLsizei theSizeX, |
589 | const GLsizei theSizeY) |
590 | { |
591 | if (!Create (theCtx) |
592 | || theNbSamples > theCtx->MaxMsaaSamples() |
593 | || theNbSamples < 1) |
594 | { |
595 | return false; |
596 | } |
597 | |
15669413 |
598 | myNbSamples = OpenGl_Context::GetPowerOfTwo (theNbSamples, theCtx->MaxMsaaSamples()); |
3c4b62a4 |
599 | myTarget = GL_TEXTURE_2D_MULTISAMPLE; |
15669413 |
600 | myHasMipmaps = false; |
3c4b62a4 |
601 | if(theSizeX > theCtx->MaxTextureSize() |
602 | || theSizeY > theCtx->MaxTextureSize()) |
603 | { |
604 | return false; |
605 | } |
606 | |
607 | Bind (theCtx); |
608 | //myTextFormat = theTextFormat; |
15669413 |
609 | mySizedFormat = theTextFormat; |
3c4b62a4 |
610 | #if !defined(GL_ES_VERSION_2_0) |
611 | if (theCtx->Functions()->glTexStorage2DMultisample != NULL) |
612 | { |
15669413 |
613 | theCtx->Functions()->glTexStorage2DMultisample (myTarget, myNbSamples, theTextFormat, theSizeX, theSizeY, GL_FALSE); |
3c4b62a4 |
614 | } |
615 | else |
616 | { |
15669413 |
617 | theCtx->Functions()->glTexImage2DMultisample (myTarget, myNbSamples, theTextFormat, theSizeX, theSizeY, GL_FALSE); |
3c4b62a4 |
618 | } |
619 | #else |
15669413 |
620 | theCtx->Functions() ->glTexStorage2DMultisample (myTarget, myNbSamples, theTextFormat, theSizeX, theSizeY, GL_FALSE); |
3c4b62a4 |
621 | #endif |
622 | if (theCtx->core11fwd->glGetError() != GL_NO_ERROR) |
623 | { |
624 | Unbind (theCtx); |
625 | return false; |
626 | } |
627 | |
628 | mySizeX = theSizeX; |
629 | mySizeY = theSizeY; |
630 | |
631 | Unbind (theCtx); |
632 | return true; |
633 | } |
634 | |
68333c8f |
635 | // ======================================================================= |
636 | // function : InitRectangle |
637 | // purpose : |
638 | // ======================================================================= |
639 | bool OpenGl_Texture::InitRectangle (const Handle(OpenGl_Context)& theCtx, |
640 | const Standard_Integer theSizeX, |
641 | const Standard_Integer theSizeY, |
642 | const OpenGl_TextureFormat& theFormat) |
643 | { |
644 | if (!Create (theCtx) || !theCtx->IsGlGreaterEqual (3, 0)) |
645 | { |
646 | return false; |
647 | } |
ca3c13d1 |
648 | |
649 | #if !defined(GL_ES_VERSION_2_0) |
68333c8f |
650 | myTarget = GL_TEXTURE_RECTANGLE; |
15669413 |
651 | myNbSamples = 1; |
652 | myHasMipmaps = false; |
68333c8f |
653 | |
fe3a29bc |
654 | const GLsizei aSizeX = Min (theCtx->MaxTextureSize(), theSizeX); |
655 | const GLsizei aSizeY = Min (theCtx->MaxTextureSize(), theSizeY); |
ca3c13d1 |
656 | |
68333c8f |
657 | Bind (theCtx); |
cc8cbabe |
658 | applyDefaultSamplerParams (theCtx); |
68333c8f |
659 | |
15669413 |
660 | myTextFormat = theFormat.Format(); |
661 | mySizedFormat = theFormat.Internal(); |
68333c8f |
662 | |
90fd6145 |
663 | // setup the alignment |
664 | OpenGl_UnpackAlignmentSentry::Reset(); |
665 | |
15669413 |
666 | glTexImage2D (GL_PROXY_TEXTURE_RECTANGLE, 0, mySizedFormat, |
667 | aSizeX, aSizeY, 0, |
668 | myTextFormat, GL_FLOAT, NULL); |
68333c8f |
669 | |
670 | GLint aTestSizeX = 0; |
671 | GLint aTestSizeY = 0; |
672 | |
15669413 |
673 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_RECTANGLE, 0, GL_TEXTURE_WIDTH, &aTestSizeX); |
674 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_RECTANGLE, 0, GL_TEXTURE_HEIGHT, &aTestSizeY); |
675 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_RECTANGLE, 0, GL_TEXTURE_INTERNAL_FORMAT, &mySizedFormat); |
68333c8f |
676 | |
677 | if (aTestSizeX == 0 || aTestSizeY == 0) |
678 | { |
679 | Unbind (theCtx); |
680 | return false; |
681 | } |
682 | |
15669413 |
683 | glTexImage2D (myTarget, 0, mySizedFormat, |
684 | aSizeX, aSizeY, 0, |
685 | myTextFormat, GL_FLOAT, NULL); |
68333c8f |
686 | |
687 | if (glGetError() != GL_NO_ERROR) |
688 | { |
689 | Unbind (theCtx); |
690 | return false; |
691 | } |
692 | |
693 | mySizeX = aSizeX; |
694 | mySizeY = aSizeY; |
695 | |
696 | Unbind (theCtx); |
697 | return true; |
ca3c13d1 |
698 | #else |
20aeeb7b |
699 | (void )theSizeX; |
700 | (void )theSizeY; |
701 | (void )theFormat; |
ca3c13d1 |
702 | return false; |
703 | #endif |
68333c8f |
704 | } |
74fb257d |
705 | |
706 | // ======================================================================= |
707 | // function : Init3D |
708 | // purpose : |
709 | // ======================================================================= |
710 | bool OpenGl_Texture::Init3D (const Handle(OpenGl_Context)& theCtx, |
ba00aab7 |
711 | const OpenGl_TextureFormat& theFormat, |
712 | const Graphic3d_Vec3i& theSizeXYZ, |
74fb257d |
713 | const void* thePixels) |
714 | { |
715 | if (theCtx->Functions()->glTexImage3D == NULL) |
716 | { |
ba00aab7 |
717 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
718 | "Error: three-dimensional textures are not supported by hardware."); |
74fb257d |
719 | return false; |
720 | } |
721 | |
722 | if (!Create(theCtx)) |
723 | { |
724 | return false; |
725 | } |
726 | |
727 | myTarget = GL_TEXTURE_3D; |
15669413 |
728 | myNbSamples = 1; |
729 | myHasMipmaps = false; |
74fb257d |
730 | |
ba00aab7 |
731 | const Graphic3d_Vec3i aSizeXYZ = theSizeXYZ.cwiseMin (Graphic3d_Vec3i (theCtx->MaxTextureSize())); |
732 | if (aSizeXYZ != theSizeXYZ) |
733 | { |
734 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
735 | "Error: 3D texture dimensions exceed hardware limits."); |
736 | Release (theCtx.get()); |
737 | Unbind (theCtx); |
738 | return false; |
739 | } |
74fb257d |
740 | Bind (theCtx); |
741 | |
ba00aab7 |
742 | if (theFormat.DataType() == GL_FLOAT |
743 | && !theCtx->arbTexFloat) |
74fb257d |
744 | { |
ba00aab7 |
745 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
746 | "Error: floating-point textures are not supported by hardware."); |
747 | Release (theCtx.get()); |
74fb257d |
748 | Unbind (theCtx); |
749 | return false; |
750 | } |
751 | |
ba00aab7 |
752 | mySizedFormat = theFormat.InternalFormat(); |
74fb257d |
753 | |
90fd6145 |
754 | // setup the alignment |
755 | OpenGl_UnpackAlignmentSentry::Reset(); |
756 | |
74fb257d |
757 | #if !defined (GL_ES_VERSION_2_0) |
15669413 |
758 | theCtx->core15fwd->glTexImage3D (GL_PROXY_TEXTURE_3D, 0, mySizedFormat, |
ba00aab7 |
759 | aSizeXYZ.x(), aSizeXYZ.y(), aSizeXYZ.z(), 0, |
760 | theFormat.PixelFormat(), theFormat.DataType(), NULL); |
74fb257d |
761 | |
ba00aab7 |
762 | NCollection_Vec3<GLint> aTestSizeXYZ; |
763 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_3D, 0, GL_TEXTURE_WIDTH, &aTestSizeXYZ.x()); |
764 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_3D, 0, GL_TEXTURE_HEIGHT, &aTestSizeXYZ.y()); |
765 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_3D, 0, GL_TEXTURE_DEPTH, &aTestSizeXYZ.z()); |
15669413 |
766 | glGetTexLevelParameteriv (GL_PROXY_TEXTURE_3D, 0, GL_TEXTURE_INTERNAL_FORMAT, &mySizedFormat); |
ba00aab7 |
767 | if (aTestSizeXYZ.x() == 0 || aTestSizeXYZ.y() == 0 || aTestSizeXYZ.z() == 0) |
74fb257d |
768 | { |
769 | Unbind (theCtx); |
ba00aab7 |
770 | Release (theCtx.get()); |
74fb257d |
771 | return false; |
772 | } |
773 | #endif |
774 | |
cc8cbabe |
775 | applyDefaultSamplerParams (theCtx); |
15669413 |
776 | theCtx->Functions()->glTexImage3D (myTarget, 0, mySizedFormat, |
ba00aab7 |
777 | aSizeXYZ.x(), aSizeXYZ.y(), aSizeXYZ.z(), 0, |
778 | theFormat.PixelFormat(), theFormat.DataType(), thePixels); |
74fb257d |
779 | |
780 | if (glGetError() != GL_NO_ERROR) |
781 | { |
782 | Unbind (theCtx); |
ba00aab7 |
783 | Release (theCtx.get()); |
74fb257d |
784 | return false; |
785 | } |
786 | |
ba00aab7 |
787 | mySizeX = aSizeXYZ.x(); |
788 | mySizeY = aSizeXYZ.y(); |
789 | mySizeZ = aSizeXYZ.z(); |
74fb257d |
790 | |
791 | Unbind (theCtx); |
792 | return true; |
793 | } |
15669413 |
794 | |
077a220c |
795 | // ======================================================================= |
67312b79 |
796 | // function : InitCubeMap |
077a220c |
797 | // purpose : |
798 | // ======================================================================= |
67312b79 |
799 | bool OpenGl_Texture::InitCubeMap (const Handle(OpenGl_Context)& theCtx, |
077a220c |
800 | const Handle(Graphic3d_CubeMap)& theCubeMap, |
ba00aab7 |
801 | Standard_Size theSize, |
802 | Image_Format theFormat, |
803 | Standard_Boolean theToGenMipmap, |
804 | Standard_Boolean theIsColorMap) |
077a220c |
805 | { |
806 | if (!Create (theCtx)) |
807 | { |
808 | Release (theCtx.get()); |
809 | return false; |
810 | } |
811 | |
812 | if (!theCubeMap.IsNull()) |
813 | { |
67312b79 |
814 | theToGenMipmap = theCubeMap->HasMipmaps(); |
ba00aab7 |
815 | if (Handle(Image_PixMap) anImage = theCubeMap->Reset().Value()) |
077a220c |
816 | { |
817 | theSize = anImage->SizeX(); |
818 | theFormat = anImage->Format(); |
819 | } |
820 | else |
821 | { |
822 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
ba00aab7 |
823 | "Unable to get the first side of cubemap"); |
077a220c |
824 | Release(theCtx.get()); |
825 | return false; |
826 | } |
827 | } |
828 | |
ba00aab7 |
829 | OpenGl_TextureFormat aFormat = OpenGl_TextureFormat::FindFormat (theCtx, theFormat, theIsColorMap); |
830 | if (!aFormat.IsValid()) |
077a220c |
831 | { |
832 | Unbind(theCtx); |
833 | Release(theCtx.get()); |
834 | return false; |
835 | } |
836 | |
837 | myTarget = GL_TEXTURE_CUBE_MAP; |
838 | myHasMipmaps = theToGenMipmap; |
839 | myNbSamples = 1; |
67312b79 |
840 | mySizeX = (GLsizei )theSize; |
841 | mySizeY = (GLsizei )theSize; |
077a220c |
842 | Bind (theCtx); |
843 | applyDefaultSamplerParams (theCtx); |
844 | |
845 | for (Standard_Integer i = 0; i < 6; ++i) |
846 | { |
847 | const void* aData = NULL; |
848 | Handle(Image_PixMap) anImage; |
849 | |
850 | if (!theCubeMap.IsNull()) |
851 | { |
852 | anImage = theCubeMap->Value(); |
853 | if (!anImage.IsNull()) |
854 | { |
855 | #if !defined(GL_ES_VERSION_2_0) |
856 | const GLint anAligment = Min ((GLint)anImage->MaxRowAligmentBytes(), 8); // OpenGL supports alignment upto 8 bytes |
857 | glPixelStorei (GL_UNPACK_ALIGNMENT, anAligment); |
858 | |
859 | // notice that GL_UNPACK_ROW_LENGTH is not available on OpenGL ES 2.0 without GL_EXT_unpack_subimage extension |
860 | const GLint anExtraBytes = GLint(anImage->RowExtraBytes()); |
861 | const GLint aPixelsWidth = GLint(anImage->SizeRowBytes() / anImage->SizePixelBytes()); |
862 | const GLint aRowLength = (anExtraBytes >= anAligment) ? aPixelsWidth : 0; |
863 | glPixelStorei (GL_UNPACK_ROW_LENGTH, aRowLength); |
864 | #else |
865 | Handle(Image_PixMap) aCopyImage = new Image_PixMap(); |
866 | aCopyImage->InitTrash (theFormat, theSize, theSize); |
867 | for (unsigned int y = 0; y < theSize; ++y) |
868 | { |
869 | for (unsigned int x = 0; x < theSize; ++x) |
870 | { |
871 | for (unsigned int aByte = 0; aByte < anImage->SizePixelBytes(); ++aByte) |
872 | { |
873 | aCopyImage->ChangeRawValue (y, x)[aByte] = anImage->RawValue (y, x)[aByte]; |
874 | } |
875 | } |
876 | } |
877 | anImage = aCopyImage; |
878 | const GLint anAligment = Min((GLint)anImage->MaxRowAligmentBytes(), 8); // OpenGL supports alignment upto 8 bytes |
879 | glPixelStorei (GL_UNPACK_ALIGNMENT, anAligment); |
880 | #endif |
881 | aData = anImage->Data(); |
882 | } |
883 | else |
884 | { |
ba00aab7 |
885 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
886 | TCollection_AsciiString() + "Unable to get [" + i + "] side of cubemap"); |
077a220c |
887 | Unbind (theCtx); |
888 | Release (theCtx.get()); |
889 | return false; |
890 | } |
891 | theCubeMap->Next(); |
892 | } |
893 | |
894 | glTexImage2D (GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, |
ba00aab7 |
895 | aFormat.InternalFormat(), |
077a220c |
896 | GLsizei(theSize), GLsizei(theSize), |
ba00aab7 |
897 | 0, aFormat.PixelFormat(), aFormat.DataType(), |
077a220c |
898 | aData); |
899 | |
900 | OpenGl_UnpackAlignmentSentry::Reset(); |
901 | |
ba00aab7 |
902 | const GLenum anErr = glGetError(); |
903 | if (anErr != GL_NO_ERROR) |
077a220c |
904 | { |
905 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
ba00aab7 |
906 | TCollection_AsciiString ("Unable to initialize side of cubemap. Error #") + int(anErr)); |
077a220c |
907 | Unbind (theCtx); |
908 | Release (theCtx.get()); |
909 | return false; |
910 | } |
911 | } |
912 | |
913 | if (theToGenMipmap && theCtx->arbFBO != NULL) |
914 | { |
ba00aab7 |
915 | theCtx->arbFBO->glGenerateMipmap (myTarget); |
916 | const GLenum anErr = glGetError(); |
917 | if (anErr != GL_NO_ERROR) |
918 | { |
919 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, |
920 | TCollection_AsciiString ("Unable to generate mipmap of cubemap. Error #") + int(anErr)); |
921 | Unbind (theCtx); |
922 | Release (theCtx.get()); |
923 | return false; |
924 | } |
077a220c |
925 | } |
926 | |
927 | Unbind (theCtx.get()); |
928 | return true; |
929 | } |
930 | |
15669413 |
931 | // ======================================================================= |
932 | // function : PixelSizeOfPixelFormat |
933 | // purpose : |
934 | // ======================================================================= |
935 | Standard_Size OpenGl_Texture::PixelSizeOfPixelFormat (Standard_Integer theInternalFormat) |
936 | { |
937 | switch(theInternalFormat) |
938 | { |
939 | // RED variations (GL_RED, OpenGL 3.0+) |
940 | case GL_RED: |
941 | case GL_R8: return 1; |
942 | case GL_R16: return 2; |
943 | case GL_R16F: return 2; |
944 | case GL_R32F: return 4; |
945 | // RGB variations |
946 | case GL_RGB: return 3; |
947 | case GL_RGB8: return 3; |
948 | case GL_RGB16: return 6; |
949 | case GL_RGB16F: return 6; |
950 | case GL_RGB32F: return 12; |
951 | // RGBA variations |
952 | case GL_RGBA: return 4; |
953 | case GL_RGBA8: return 4; |
954 | case GL_RGB10_A2: return 4; |
955 | case GL_RGBA12: return 6; |
956 | case GL_RGBA16: return 8; |
957 | case GL_RGBA16F: return 8; |
958 | case GL_RGBA32F: return 16; |
959 | // |
960 | case GL_BGRA_EXT: return 4; |
961 | // ALPHA variations (deprecated) |
962 | case GL_ALPHA: |
963 | case GL_ALPHA8: return 1; |
964 | case GL_ALPHA16: return 2; |
965 | case GL_LUMINANCE: return 1; |
966 | case GL_LUMINANCE_ALPHA: return 2; |
967 | // depth-stencil |
968 | case GL_DEPTH24_STENCIL8: return 4; |
969 | case GL_DEPTH32F_STENCIL8: return 8; |
970 | case GL_DEPTH_COMPONENT16: return 2; |
971 | case GL_DEPTH_COMPONENT24: return 3; |
972 | case GL_DEPTH_COMPONENT32F: return 4; |
973 | } |
974 | return 0; |
975 | } |
976 | |
977 | // ======================================================================= |
978 | // function : EstimatedDataSize |
979 | // purpose : |
980 | // ======================================================================= |
981 | Standard_Size OpenGl_Texture::EstimatedDataSize() const |
982 | { |
983 | if (!IsValid()) |
984 | { |
985 | return 0; |
986 | } |
987 | |
988 | Standard_Size aSize = PixelSizeOfPixelFormat (mySizedFormat) * mySizeX * myNbSamples; |
989 | if (mySizeY != 0) |
990 | { |
991 | aSize *= Standard_Size(mySizeY); |
992 | } |
993 | if (mySizeZ != 0) |
994 | { |
995 | aSize *= Standard_Size(mySizeZ); |
996 | } |
67312b79 |
997 | if (myTarget == GL_TEXTURE_CUBE_MAP) |
998 | { |
999 | aSize *= 6; // cube sides |
1000 | } |
15669413 |
1001 | if (myHasMipmaps) |
1002 | { |
1003 | aSize = aSize + aSize / 3; |
1004 | } |
1005 | return aSize; |
1006 | } |