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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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441 | 441 |
442 case InPreprocessorDirective: | 442 case InPreprocessorDirective: |
443 // No matter what the character is, just pass it | 443 // No matter what the character is, just pass it |
444 // through. Do not parse comments in this state. This | 444 // through. Do not parse comments in this state. This |
445 // might not be the right thing to do long term, but it | 445 // might not be the right thing to do long term, but it |
446 // should handle the #error preprocessor directive. | 446 // should handle the #error preprocessor directive. |
447 emit(c); | 447 emit(c); |
448 break; | 448 break; |
449 | 449 |
450 case InSingleLineComment: | 450 case InSingleLineComment: |
451 // Line-continuation characters are processed before comment processing. | |
452 // Advance string if a new line character is immediately behind | |
453 // line-continuation character. | |
454 if (c == '\\') { | |
455 if (peek(temp) && isNewline(temp)) | |
Zhenyao Mo
2016/06/30 16:10:39
What if it's "\r\n"? Two characters but still one
Zhenyao Mo
2016/06/30 16:40:55
Never mind. It doesn't matter.
| |
456 advance(); | |
457 } | |
458 | |
451 // The newline code at the top of this function takes care | 459 // The newline code at the top of this function takes care |
452 // of resetting our state when we get out of the | 460 // of resetting our state when we get out of the |
453 // single-line comment. Swallow all other characters. | 461 // single-line comment. Swallow all other characters. |
454 break; | 462 break; |
455 | 463 |
456 case InMultiLineComment: | 464 case InMultiLineComment: |
457 if (c == '*' && peek(temp) && temp == '/') { | 465 if (c == '*' && peek(temp) && temp == '/') { |
458 emit('*'); | 466 emit('*'); |
459 emit('/'); | 467 emit('/'); |
460 m_parseState = MiddleOfLine; | 468 m_parseState = MiddleOfLine; |
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3849 if (isContextLost()) | 3857 if (isContextLost()) |
3850 return; | 3858 return; |
3851 contextGL()->Scissor(x, y, width, height); | 3859 contextGL()->Scissor(x, y, width, height); |
3852 } | 3860 } |
3853 | 3861 |
3854 void WebGLRenderingContextBase::shaderSource(WebGLShader* shader, const String& string) | 3862 void WebGLRenderingContextBase::shaderSource(WebGLShader* shader, const String& string) |
3855 { | 3863 { |
3856 if (isContextLost() || !validateWebGLObject("shaderSource", shader)) | 3864 if (isContextLost() || !validateWebGLObject("shaderSource", shader)) |
3857 return; | 3865 return; |
3858 String stringWithoutComments = StripComments(string).result(); | 3866 String stringWithoutComments = StripComments(string).result(); |
3859 // TODO(danakj): Make validateString reject characters > 255 (or utf16 Strin gs) | 3867 // TODO(danakj): Make validateShaderSource reject characters > 255 (or utf16 Strings) |
3860 // so we don't need to use StringUTF8Adaptor. | 3868 // so we don't need to use StringUTF8Adaptor. |
3861 if (!validateString("shaderSource", stringWithoutComments)) | 3869 if (!validateShaderSource(stringWithoutComments)) |
3862 return; | 3870 return; |
3863 shader->setSource(string); | 3871 shader->setSource(string); |
3864 WTF::StringUTF8Adaptor adaptor(stringWithoutComments); | 3872 WTF::StringUTF8Adaptor adaptor(stringWithoutComments); |
3865 const GLchar* shaderData = adaptor.data(); | 3873 const GLchar* shaderData = adaptor.data(); |
3866 // TODO(danakj): Use base::saturated_cast<GLint>. | 3874 // TODO(danakj): Use base::saturated_cast<GLint>. |
3867 const GLint shaderLength = adaptor.length(); | 3875 const GLint shaderLength = adaptor.length(); |
3868 contextGL()->ShaderSource(objectOrZero(shader), 1, &shaderData, &shaderLengt h); | 3876 contextGL()->ShaderSource(objectOrZero(shader), 1, &shaderData, &shaderLengt h); |
3869 } | 3877 } |
3870 | 3878 |
3871 void WebGLRenderingContextBase::stencilFunc(GLenum func, GLint ref, GLuint mask) | 3879 void WebGLRenderingContextBase::stencilFunc(GLenum func, GLint ref, GLuint mask) |
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5462 { | 5470 { |
5463 for (size_t i = 0; i < string.length(); ++i) { | 5471 for (size_t i = 0; i < string.length(); ++i) { |
5464 if (!validateCharacter(string[i])) { | 5472 if (!validateCharacter(string[i])) { |
5465 synthesizeGLError(GL_INVALID_VALUE, functionName, "string not ASCII" ); | 5473 synthesizeGLError(GL_INVALID_VALUE, functionName, "string not ASCII" ); |
5466 return false; | 5474 return false; |
5467 } | 5475 } |
5468 } | 5476 } |
5469 return true; | 5477 return true; |
5470 } | 5478 } |
5471 | 5479 |
5480 bool WebGLRenderingContextBase::validateShaderSource(const String& string) | |
5481 { | |
5482 for (size_t i = 0; i < string.length(); ++i) { | |
5483 // line-continuation character \ is supported in WebGL 2.0. | |
5484 if (isWebGL2OrHigher() && string[i] == '\\') { | |
5485 if (i + 1 >= string.length() || (string[i + 1] != '\n' && string[i + 1] != '\r')) { | |
5486 synthesizeGLError(GL_INVALID_VALUE, "shaderSource", "line-contin uation character is not immediately preceding a new-line"); | |
Zhenyao Mo
2016/06/30 16:10:39
From reading the spec, I am not sure if it's an er
Ken Russell (switch to Gerrit)
2016/07/01 00:42:30
From my reading of the spec, the continuation char
qiankun
2016/07/01 10:32:01
Comments have already been removed before doing va
Zhenyao Mo
2016/07/01 16:53:50
Is this behavior (generating INVALID_VALUE if '\\'
| |
5487 return false; | |
5488 } | |
5489 continue; | |
5490 } | |
5491 if (!validateCharacter(string[i])) { | |
5492 synthesizeGLError(GL_INVALID_VALUE, "shaderSource", "string not ASCI I"); | |
5493 return false; | |
5494 } | |
5495 } | |
5496 return true; | |
5497 } | |
5498 | |
5472 bool WebGLRenderingContextBase::validateTexFuncFormatAndType(const char* functio nName, TexImageFunctionType functionType, GLenum internalformat, GLenum format, GLenum type, GLint level) | 5499 bool WebGLRenderingContextBase::validateTexFuncFormatAndType(const char* functio nName, TexImageFunctionType functionType, GLenum internalformat, GLenum format, GLenum type, GLint level) |
5473 { | 5500 { |
5474 if (!m_isWebGL2FormatsTypesAdded && isWebGL2OrHigher()) { | 5501 if (!m_isWebGL2FormatsTypesAdded && isWebGL2OrHigher()) { |
5475 ADD_VALUES_TO_SET(m_supportedInternalFormats, kSupportedInternalFormatsE S3); | 5502 ADD_VALUES_TO_SET(m_supportedInternalFormats, kSupportedInternalFormatsE S3); |
5476 ADD_VALUES_TO_SET(m_supportedInternalFormats, kSupportedInternalFormatsT exImageES3); | 5503 ADD_VALUES_TO_SET(m_supportedInternalFormats, kSupportedInternalFormatsT exImageES3); |
5477 ADD_VALUES_TO_SET(m_supportedFormats, kSupportedFormatsES3); | 5504 ADD_VALUES_TO_SET(m_supportedFormats, kSupportedFormatsES3); |
5478 ADD_VALUES_TO_SET(m_supportedTypes, kSupportedTypesES3); | 5505 ADD_VALUES_TO_SET(m_supportedTypes, kSupportedTypesES3); |
5479 m_isWebGL2FormatsTypesAdded = true; | 5506 m_isWebGL2FormatsTypesAdded = true; |
5480 } | 5507 } |
5481 | 5508 |
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6444 contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, 1); | 6471 contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, 1); |
6445 } | 6472 } |
6446 | 6473 |
6447 void WebGLRenderingContextBase::restoreUnpackParameters() | 6474 void WebGLRenderingContextBase::restoreUnpackParameters() |
6448 { | 6475 { |
6449 if (m_unpackAlignment != 1) | 6476 if (m_unpackAlignment != 1) |
6450 contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment); | 6477 contextGL()->PixelStorei(GL_UNPACK_ALIGNMENT, m_unpackAlignment); |
6451 } | 6478 } |
6452 | 6479 |
6453 } // namespace blink | 6480 } // namespace blink |
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