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1 /* | 1 /* |
2 * Copyright (C) 2009 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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37 } | 37 } |
38 | 38 |
39 WebGLTexture::WebGLTexture(WebGLRenderingContext* ctx) | 39 WebGLTexture::WebGLTexture(WebGLRenderingContext* ctx) |
40 : WebGLSharedObject(ctx) | 40 : WebGLSharedObject(ctx) |
41 , m_target(0) | 41 , m_target(0) |
42 , m_minFilter(GraphicsContext3D::NEAREST_MIPMAP_LINEAR) | 42 , m_minFilter(GraphicsContext3D::NEAREST_MIPMAP_LINEAR) |
43 , m_magFilter(GraphicsContext3D::LINEAR) | 43 , m_magFilter(GraphicsContext3D::LINEAR) |
44 , m_wrapS(GraphicsContext3D::REPEAT) | 44 , m_wrapS(GraphicsContext3D::REPEAT) |
45 , m_wrapT(GraphicsContext3D::REPEAT) | 45 , m_wrapT(GraphicsContext3D::REPEAT) |
46 , m_isNPOT(false) | 46 , m_isNPOT(false) |
| 47 , m_isCubeComplete(false) |
47 , m_isComplete(false) | 48 , m_isComplete(false) |
48 , m_needToUseBlackTexture(false) | 49 , m_needToUseBlackTexture(false) |
49 , m_isFloatType(false) | 50 , m_isFloatType(false) |
50 , m_isHalfFloatType(false) | 51 , m_isHalfFloatType(false) |
51 { | 52 { |
52 ScriptWrappable::init(this); | 53 ScriptWrappable::init(this); |
53 setObject(ctx->graphicsContext3D()->createTexture()); | 54 setObject(ctx->graphicsContext3D()->createTexture()); |
54 } | 55 } |
55 | 56 |
56 WebGLTexture::~WebGLTexture() | 57 WebGLTexture::~WebGLTexture() |
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275 | 276 |
276 bool WebGLTexture::canGenerateMipmaps() | 277 bool WebGLTexture::canGenerateMipmaps() |
277 { | 278 { |
278 if (isNPOT()) | 279 if (isNPOT()) |
279 return false; | 280 return false; |
280 const LevelInfo& first = m_info[0][0]; | 281 const LevelInfo& first = m_info[0][0]; |
281 for (size_t ii = 0; ii < m_info.size(); ++ii) { | 282 for (size_t ii = 0; ii < m_info.size(); ++ii) { |
282 const LevelInfo& info = m_info[ii][0]; | 283 const LevelInfo& info = m_info[ii][0]; |
283 if (!info.valid | 284 if (!info.valid |
284 || info.width != first.width || info.height != first.height | 285 || info.width != first.width || info.height != first.height |
285 || info.internalFormat != first.internalFormat || info.type != first
.type) | 286 || info.internalFormat != first.internalFormat || info.type != first
.type |
| 287 || (m_info.size() > 1 && !m_isCubeComplete)) |
286 return false; | 288 return false; |
287 } | 289 } |
288 return true; | 290 return true; |
289 } | 291 } |
290 | 292 |
291 GC3Dint WebGLTexture::computeLevelCount(GC3Dsizei width, GC3Dsizei height) | 293 GC3Dint WebGLTexture::computeLevelCount(GC3Dsizei width, GC3Dsizei height) |
292 { | 294 { |
293 // return 1 + log2Floor(std::max(width, height)); | 295 // return 1 + log2Floor(std::max(width, height)); |
294 GC3Dsizei n = std::max(width, height); | 296 GC3Dsizei n = std::max(width, height); |
295 if (n <= 0) | 297 if (n <= 0) |
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311 void WebGLTexture::update() | 313 void WebGLTexture::update() |
312 { | 314 { |
313 m_isNPOT = false; | 315 m_isNPOT = false; |
314 for (size_t ii = 0; ii < m_info.size(); ++ii) { | 316 for (size_t ii = 0; ii < m_info.size(); ++ii) { |
315 if (isNPOT(m_info[ii][0].width, m_info[ii][0].height)) { | 317 if (isNPOT(m_info[ii][0].width, m_info[ii][0].height)) { |
316 m_isNPOT = true; | 318 m_isNPOT = true; |
317 break; | 319 break; |
318 } | 320 } |
319 } | 321 } |
320 m_isComplete = true; | 322 m_isComplete = true; |
| 323 m_isCubeComplete = true; |
321 const LevelInfo& first = m_info[0][0]; | 324 const LevelInfo& first = m_info[0][0]; |
322 GC3Dint levelCount = computeLevelCount(first.width, first.height); | 325 GC3Dint levelCount = computeLevelCount(first.width, first.height); |
323 if (levelCount < 1) | 326 if (levelCount < 1) |
324 m_isComplete = false; | 327 m_isComplete = false; |
325 else { | 328 else { |
326 for (size_t ii = 0; ii < m_info.size() && m_isComplete; ++ii) { | 329 for (size_t ii = 0; ii < m_info.size() && m_isComplete; ++ii) { |
327 const LevelInfo& info0 = m_info[ii][0]; | 330 const LevelInfo& info0 = m_info[ii][0]; |
328 if (!info0.valid | 331 if (!info0.valid |
329 || info0.width != first.width || info0.height != first.height | 332 || info0.width != first.width || info0.height != first.height |
330 || info0.internalFormat != first.internalFormat || info0.type !=
first.type) { | 333 || info0.internalFormat != first.internalFormat || info0.type !=
first.type |
| 334 || (m_info.size() > 1 && info0.width != info0.height)) { |
| 335 if (m_info.size() > 1) |
| 336 m_isCubeComplete = false; |
331 m_isComplete = false; | 337 m_isComplete = false; |
332 break; | 338 break; |
333 } | 339 } |
334 GC3Dsizei width = info0.width; | 340 GC3Dsizei width = info0.width; |
335 GC3Dsizei height = info0.height; | 341 GC3Dsizei height = info0.height; |
336 for (GC3Dint level = 1; level < levelCount; ++level) { | 342 for (GC3Dint level = 1; level < levelCount; ++level) { |
337 width = std::max(1, width >> 1); | 343 width = std::max(1, width >> 1); |
338 height = std::max(1, height >> 1); | 344 height = std::max(1, height >> 1); |
339 const LevelInfo& info = m_info[ii][level]; | 345 const LevelInfo& info = m_info[ii][level]; |
340 if (!info.valid | 346 if (!info.valid |
341 || info.width != width || info.height != height | 347 || info.width != width || info.height != height |
342 || info.internalFormat != info0.internalFormat || info.type
!= info0.type) { | 348 || info.internalFormat != info0.internalFormat || info.type
!= info0.type) { |
343 m_isComplete = false; | 349 m_isComplete = false; |
344 break; | 350 break; |
345 } | 351 } |
346 | 352 |
347 } | 353 } |
348 } | 354 } |
349 } | 355 } |
350 m_isFloatType = false; | 356 m_isFloatType = m_info[0][0].type == GraphicsContext3D::FLOAT; |
351 if (m_isComplete) | 357 m_isHalfFloatType = m_info[0][0].type == GraphicsContext3D::HALF_FLOAT_OES; |
352 m_isFloatType = m_info[0][0].type == GraphicsContext3D::FLOAT; | |
353 else { | |
354 for (size_t ii = 0; ii < m_info.size(); ++ii) { | |
355 if (m_info[ii][0].type == GraphicsContext3D::FLOAT) { | |
356 m_isFloatType = true; | |
357 break; | |
358 } | |
359 } | |
360 } | |
361 m_isHalfFloatType = false; | |
362 if (m_isComplete) | |
363 m_isHalfFloatType = m_info[0][0].type == GraphicsContext3D::HALF_FLOAT_O
ES; | |
364 else { | |
365 for (size_t ii = 0; ii < m_info.size(); ++ii) { | |
366 if (m_info[ii][0].type == GraphicsContext3D::HALF_FLOAT_OES) { | |
367 m_isHalfFloatType = true; | |
368 break; | |
369 } | |
370 } | |
371 } | |
372 | 358 |
373 m_needToUseBlackTexture = false; | 359 m_needToUseBlackTexture = false; |
374 // NPOT | 360 // NPOT |
375 if (m_isNPOT && ((m_minFilter != GraphicsContext3D::NEAREST && m_minFilter !
= GraphicsContext3D::LINEAR) | 361 if (m_isNPOT && ((m_minFilter != GraphicsContext3D::NEAREST && m_minFilter !
= GraphicsContext3D::LINEAR) |
376 || m_wrapS != GraphicsContext3D::CLAMP_TO_EDGE || m_wrapT !
= GraphicsContext3D::CLAMP_TO_EDGE)) | 362 || m_wrapS != GraphicsContext3D::CLAMP_TO_EDGE || m_wrapT !
= GraphicsContext3D::CLAMP_TO_EDGE)) |
377 m_needToUseBlackTexture = true; | 363 m_needToUseBlackTexture = true; |
| 364 // If it is a Cube texture, check Cube Completeness first |
| 365 if (m_info.size() > 1 && !m_isCubeComplete) |
| 366 m_needToUseBlackTexture = true; |
378 // Completeness | 367 // Completeness |
379 if (!m_isComplete && m_minFilter != GraphicsContext3D::NEAREST && m_minFilte
r != GraphicsContext3D::LINEAR) | 368 if (!m_isComplete && m_minFilter != GraphicsContext3D::NEAREST && m_minFilte
r != GraphicsContext3D::LINEAR) |
380 m_needToUseBlackTexture = true; | 369 m_needToUseBlackTexture = true; |
381 } | 370 } |
382 | 371 |
383 const WebGLTexture::LevelInfo* WebGLTexture::getLevelInfo(GC3Denum target, GC3Di
nt level) const | 372 const WebGLTexture::LevelInfo* WebGLTexture::getLevelInfo(GC3Denum target, GC3Di
nt level) const |
384 { | 373 { |
385 if (!object() || !m_target) | 374 if (!object() || !m_target) |
386 return 0; | 375 return 0; |
387 int targetIndex = mapTargetToIndex(target); | 376 int targetIndex = mapTargetToIndex(target); |
388 if (targetIndex < 0 || targetIndex >= static_cast<int>(m_info.size())) | 377 if (targetIndex < 0 || targetIndex >= static_cast<int>(m_info.size())) |
389 return 0; | 378 return 0; |
390 if (level < 0 || level >= static_cast<GC3Dint>(m_info[targetIndex].size())) | 379 if (level < 0 || level >= static_cast<GC3Dint>(m_info[targetIndex].size())) |
391 return 0; | 380 return 0; |
392 return &(m_info[targetIndex][level]); | 381 return &(m_info[targetIndex][level]); |
393 } | 382 } |
394 | 383 |
395 } | 384 } |
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