| /* |
| * Copyright (C) 2010, 2016 Apple Inc. All rights reserved. |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * Copyright (C) 2010 Mozilla Corporation. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "GraphicsContextGLOpenGL.h" |
| |
| #if ENABLE(GRAPHICS_CONTEXT_GL) |
| |
| #include "ExtensionsGL.h" |
| #include "FormatConverter.h" |
| #include "Image.h" |
| #include "ImageData.h" |
| #include "ImageObserver.h" |
| #include <wtf/UniqueArray.h> |
| |
| namespace WebCore { |
| |
| namespace { |
| |
| GraphicsContextGL::DataFormat getDataFormat(GCGLenum destinationFormat, GCGLenum destinationType) |
| { |
| GraphicsContextGL::DataFormat dstFormat = GraphicsContextGL::DataFormat::RGBA8; |
| switch (destinationType) { |
| case GraphicsContextGL::UNSIGNED_BYTE: |
| switch (destinationFormat) { |
| case GraphicsContextGL::RGB: |
| dstFormat = GraphicsContextGL::DataFormat::RGB8; |
| break; |
| case GraphicsContextGL::RGBA: |
| dstFormat = GraphicsContextGL::DataFormat::RGBA8; |
| break; |
| case GraphicsContextGL::ALPHA: |
| dstFormat = GraphicsContextGL::DataFormat::A8; |
| break; |
| case GraphicsContextGL::LUMINANCE: |
| dstFormat = GraphicsContextGL::DataFormat::R8; |
| break; |
| case GraphicsContextGL::LUMINANCE_ALPHA: |
| dstFormat = GraphicsContextGL::DataFormat::RA8; |
| break; |
| case GraphicsContextGL::SRGB: |
| dstFormat = GraphicsContextGL::DataFormat::RGB8; |
| break; |
| case GraphicsContextGL::SRGB_ALPHA: |
| dstFormat = GraphicsContextGL::DataFormat::RGBA8; |
| break; |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| break; |
| case GraphicsContextGL::UNSIGNED_SHORT_4_4_4_4: |
| dstFormat = GraphicsContextGL::DataFormat::RGBA4444; |
| break; |
| case GraphicsContextGL::UNSIGNED_SHORT_5_5_5_1: |
| dstFormat = GraphicsContextGL::DataFormat::RGBA5551; |
| break; |
| case GraphicsContextGL::UNSIGNED_SHORT_5_6_5: |
| dstFormat = GraphicsContextGL::DataFormat::RGB565; |
| break; |
| case GraphicsContextGL::HALF_FLOAT_OES: // OES_texture_half_float |
| switch (destinationFormat) { |
| case GraphicsContextGL::RGB: |
| dstFormat = GraphicsContextGL::DataFormat::RGB16F; |
| break; |
| case GraphicsContextGL::RGBA: |
| dstFormat = GraphicsContextGL::DataFormat::RGBA16F; |
| break; |
| case GraphicsContextGL::ALPHA: |
| dstFormat = GraphicsContextGL::DataFormat::A16F; |
| break; |
| case GraphicsContextGL::LUMINANCE: |
| dstFormat = GraphicsContextGL::DataFormat::R16F; |
| break; |
| case GraphicsContextGL::LUMINANCE_ALPHA: |
| dstFormat = GraphicsContextGL::DataFormat::RA16F; |
| break; |
| case GraphicsContextGL::SRGB: |
| dstFormat = GraphicsContextGL::DataFormat::RGB16F; |
| break; |
| case GraphicsContextGL::SRGB_ALPHA: |
| dstFormat = GraphicsContextGL::DataFormat::RGBA16F; |
| break; |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| break; |
| case GraphicsContextGL::FLOAT: // OES_texture_float |
| switch (destinationFormat) { |
| case GraphicsContextGL::RGB: |
| dstFormat = GraphicsContextGL::DataFormat::RGB32F; |
| break; |
| case GraphicsContextGL::RGBA: |
| dstFormat = GraphicsContextGL::DataFormat::RGBA32F; |
| break; |
| case GraphicsContextGL::ALPHA: |
| dstFormat = GraphicsContextGL::DataFormat::A32F; |
| break; |
| case GraphicsContextGL::LUMINANCE: |
| dstFormat = GraphicsContextGL::DataFormat::R32F; |
| break; |
| case GraphicsContextGL::LUMINANCE_ALPHA: |
| dstFormat = GraphicsContextGL::DataFormat::RA32F; |
| break; |
| case GraphicsContextGL::SRGB: |
| dstFormat = GraphicsContextGL::DataFormat::RGB32F; |
| break; |
| case GraphicsContextGL::SRGB_ALPHA: |
| dstFormat = GraphicsContextGL::DataFormat::RGBA32F; |
| break; |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| break; |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| return dstFormat; |
| } |
| |
| } // anonymous namespace |
| |
| bool GraphicsContextGLOpenGL::texImage2DResourceSafe(GCGLenum target, GCGLint level, GCGLenum internalformat, GCGLsizei width, GCGLsizei height, GCGLint border, GCGLenum format, GCGLenum type, GCGLint unpackAlignment) |
| { |
| ASSERT(unpackAlignment == 1 || unpackAlignment == 2 || unpackAlignment == 4 || unpackAlignment == 8); |
| UniqueArray<unsigned char> zero; |
| if (width > 0 && height > 0) { |
| unsigned size; |
| GCGLenum error = computeImageSizeInBytes(format, type, width, height, unpackAlignment, &size, nullptr); |
| if (error != GraphicsContextGL::NO_ERROR) { |
| synthesizeGLError(error); |
| return false; |
| } |
| zero = makeUniqueArray<unsigned char>(size); |
| if (!zero) { |
| synthesizeGLError(GraphicsContextGL::INVALID_VALUE); |
| return false; |
| } |
| memset(zero.get(), 0, size); |
| } |
| return texImage2D(target, level, internalformat, width, height, border, format, type, zero.get()); |
| } |
| |
| bool GraphicsContextGLOpenGL::computeFormatAndTypeParameters(GCGLenum format, GCGLenum type, unsigned* componentsPerPixel, unsigned* bytesPerComponent) |
| { |
| switch (format) { |
| case GraphicsContextGL::RED: |
| case GraphicsContextGL::RED_INTEGER: |
| case GraphicsContextGL::ALPHA: |
| case GraphicsContextGL::LUMINANCE: |
| case GraphicsContextGL::DEPTH_COMPONENT: |
| case GraphicsContextGL::DEPTH_STENCIL: |
| *componentsPerPixel = 1; |
| break; |
| case GraphicsContextGL::RG: |
| case GraphicsContextGL::RG_INTEGER: |
| case GraphicsContextGL::LUMINANCE_ALPHA: |
| *componentsPerPixel = 2; |
| break; |
| case GraphicsContextGL::RGB: |
| case GraphicsContextGL::RGB_INTEGER: |
| case ExtensionsGL::SRGB_EXT: |
| *componentsPerPixel = 3; |
| break; |
| case GraphicsContextGL::RGBA: |
| case GraphicsContextGL::RGBA_INTEGER: |
| case ExtensionsGL::BGRA_EXT: // GL_EXT_texture_format_BGRA8888 |
| case ExtensionsGL::SRGB_ALPHA_EXT: |
| *componentsPerPixel = 4; |
| break; |
| default: |
| return false; |
| } |
| |
| switch (type) { |
| case GraphicsContextGL::UNSIGNED_BYTE: |
| *bytesPerComponent = sizeof(GCGLubyte); |
| break; |
| case GraphicsContextGL::BYTE: |
| *bytesPerComponent = sizeof(GCGLbyte); |
| break; |
| case GraphicsContextGL::UNSIGNED_SHORT: |
| *bytesPerComponent = sizeof(GCGLushort); |
| break; |
| case GraphicsContextGL::SHORT: |
| *bytesPerComponent = sizeof(GCGLshort); |
| break; |
| case GraphicsContextGL::UNSIGNED_SHORT_5_6_5: |
| case GraphicsContextGL::UNSIGNED_SHORT_4_4_4_4: |
| case GraphicsContextGL::UNSIGNED_SHORT_5_5_5_1: |
| *componentsPerPixel = 1; |
| *bytesPerComponent = sizeof(GCGLushort); |
| break; |
| case GraphicsContextGL::UNSIGNED_INT_24_8: |
| case GraphicsContextGL::UNSIGNED_INT_2_10_10_10_REV: |
| case GraphicsContextGL::UNSIGNED_INT_10F_11F_11F_REV: |
| case GraphicsContextGL::UNSIGNED_INT_5_9_9_9_REV: |
| *componentsPerPixel = 1; |
| *bytesPerComponent = sizeof(GCGLuint); |
| break; |
| case GraphicsContextGL::UNSIGNED_INT: |
| *bytesPerComponent = sizeof(GCGLuint); |
| break; |
| case GraphicsContextGL::INT: |
| *bytesPerComponent = sizeof(GCGLint); |
| break; |
| case GraphicsContextGL::FLOAT: // OES_texture_float |
| *bytesPerComponent = sizeof(GCGLfloat); |
| break; |
| case GraphicsContextGL::HALF_FLOAT: |
| case GraphicsContextGL::HALF_FLOAT_OES: // OES_texture_half_float |
| *bytesPerComponent = sizeof(GCGLhalffloat); |
| break; |
| case GraphicsContextGL::FLOAT_32_UNSIGNED_INT_24_8_REV: |
| *bytesPerComponent = sizeof(GCGLfloat) + sizeof(GCGLuint); |
| break; |
| default: |
| return false; |
| } |
| return true; |
| } |
| |
| bool GraphicsContextGLOpenGL::possibleFormatAndTypeForInternalFormat(GCGLenum internalFormat, GCGLenum& format, GCGLenum& type) |
| { |
| #define POSSIBLE_FORMAT_TYPE_CASE(internalFormatMacro, formatMacro, typeMacro) case internalFormatMacro: \ |
| format = formatMacro; \ |
| type = GraphicsContextGLOpenGL::typeMacro; \ |
| break; |
| |
| switch (internalFormat) { |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB , GraphicsContextGL::RGB , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA , GraphicsContextGL::RGBA , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::LUMINANCE_ALPHA , GraphicsContextGL::LUMINANCE_ALPHA, UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::LUMINANCE , GraphicsContextGL::LUMINANCE , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::ALPHA , GraphicsContextGL::ALPHA , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R8 , GraphicsContextGL::RED , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R8_SNORM , GraphicsContextGL::RED , BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R16F , GraphicsContextGL::RED , HALF_FLOAT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R32F , GraphicsContextGL::RED , FLOAT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R8UI , GraphicsContextGL::RED_INTEGER , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R8I , GraphicsContextGL::RED_INTEGER , BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R16UI , GraphicsContextGL::RED_INTEGER , UNSIGNED_SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R16I , GraphicsContextGL::RED_INTEGER , SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R32UI , GraphicsContextGL::RED_INTEGER , UNSIGNED_INT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R32I , GraphicsContextGL::RED_INTEGER , INT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG8 , GraphicsContextGL::RG , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG8_SNORM , GraphicsContextGL::RG , BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG16F , GraphicsContextGL::RG , HALF_FLOAT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG32F , GraphicsContextGL::RG , FLOAT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG8UI , GraphicsContextGL::RG_INTEGER , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG8I , GraphicsContextGL::RG_INTEGER , BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG16UI , GraphicsContextGL::RG_INTEGER , UNSIGNED_SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG16I , GraphicsContextGL::RG_INTEGER , SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG32UI , GraphicsContextGL::RG_INTEGER , UNSIGNED_INT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RG32I , GraphicsContextGL::RG_INTEGER , INT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB8 , GraphicsContextGL::RGB , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::SRGB8 , GraphicsContextGL::RGB , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB565 , GraphicsContextGL::RGB , UNSIGNED_SHORT_5_6_5 ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB8_SNORM , GraphicsContextGL::RGB , BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::R11F_G11F_B10F , GraphicsContextGL::RGB , UNSIGNED_INT_10F_11F_11F_REV ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB9_E5 , GraphicsContextGL::RGB , UNSIGNED_INT_5_9_9_9_REV ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB16F , GraphicsContextGL::RGB , HALF_FLOAT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB32F , GraphicsContextGL::RGB , FLOAT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB8UI , GraphicsContextGL::RGB_INTEGER , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB8I , GraphicsContextGL::RGB_INTEGER , BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB16UI , GraphicsContextGL::RGB_INTEGER , UNSIGNED_SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB16I , GraphicsContextGL::RGB_INTEGER , SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB32UI , GraphicsContextGL::RGB_INTEGER , UNSIGNED_INT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB32I , GraphicsContextGL::RGB_INTEGER , INT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA8 , GraphicsContextGL::RGBA , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::SRGB8_ALPHA8 , GraphicsContextGL::RGBA , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA8_SNORM , GraphicsContextGL::RGBA , BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB5_A1 , GraphicsContextGL::RGBA , UNSIGNED_SHORT_5_5_5_1 ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA4 , GraphicsContextGL::RGBA , UNSIGNED_SHORT_4_4_4_4 ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB10_A2 , GraphicsContextGL::RGBA , UNSIGNED_INT_2_10_10_10_REV ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA16F , GraphicsContextGL::RGBA , HALF_FLOAT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA32F , GraphicsContextGL::RGBA , FLOAT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA8UI , GraphicsContextGL::RGBA_INTEGER , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA8I , GraphicsContextGL::RGBA_INTEGER , BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGB10_A2UI , GraphicsContextGL::RGBA_INTEGER , UNSIGNED_INT_2_10_10_10_REV ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA16UI , GraphicsContextGL::RGBA_INTEGER , UNSIGNED_SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA16I , GraphicsContextGL::RGBA_INTEGER , SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA32I , GraphicsContextGL::RGBA_INTEGER , INT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::RGBA32UI , GraphicsContextGL::RGBA_INTEGER , UNSIGNED_INT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::DEPTH_COMPONENT16 , GraphicsContextGL::DEPTH_COMPONENT, UNSIGNED_SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::DEPTH_COMPONENT , GraphicsContextGL::DEPTH_COMPONENT, UNSIGNED_SHORT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::DEPTH_COMPONENT24 , GraphicsContextGL::DEPTH_COMPONENT, UNSIGNED_INT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::DEPTH_COMPONENT32F, GraphicsContextGL::DEPTH_COMPONENT, FLOAT ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::DEPTH_STENCIL , GraphicsContextGL::DEPTH_STENCIL , UNSIGNED_INT_24_8 ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::DEPTH24_STENCIL8 , GraphicsContextGL::DEPTH_STENCIL , UNSIGNED_INT_24_8 ); |
| POSSIBLE_FORMAT_TYPE_CASE(GraphicsContextGL::DEPTH32F_STENCIL8 , GraphicsContextGL::DEPTH_STENCIL , FLOAT_32_UNSIGNED_INT_24_8_REV); |
| POSSIBLE_FORMAT_TYPE_CASE(ExtensionsGL::SRGB_EXT , ExtensionsGL::SRGB_EXT , UNSIGNED_BYTE ); |
| POSSIBLE_FORMAT_TYPE_CASE(ExtensionsGL::SRGB_ALPHA_EXT , ExtensionsGL::SRGB_ALPHA_EXT , UNSIGNED_BYTE ); |
| default: |
| return false; |
| } |
| #undef POSSIBLE_FORMAT_TYPE_CASE |
| |
| return true; |
| } |
| |
| GCGLenum GraphicsContextGLOpenGL::computeImageSizeInBytes(GCGLenum format, GCGLenum type, GCGLsizei width, GCGLsizei height, GCGLint alignment, unsigned* imageSizeInBytes, unsigned* paddingInBytes) |
| { |
| ASSERT(imageSizeInBytes); |
| ASSERT(alignment == 1 || alignment == 2 || alignment == 4 || alignment == 8); |
| if (width < 0 || height < 0) |
| return GraphicsContextGL::INVALID_VALUE; |
| unsigned bytesPerComponent; |
| unsigned componentsPerPixel; |
| if (!computeFormatAndTypeParameters(format, type, &componentsPerPixel, &bytesPerComponent)) |
| return GraphicsContextGL::INVALID_ENUM; |
| if (!width || !height) { |
| *imageSizeInBytes = 0; |
| if (paddingInBytes) |
| *paddingInBytes = 0; |
| return GraphicsContextGL::NO_ERROR; |
| } |
| Checked<uint32_t, RecordOverflow> checkedValue = bytesPerComponent * componentsPerPixel; |
| checkedValue *= width; |
| if (checkedValue.hasOverflowed()) |
| return GraphicsContextGL::INVALID_VALUE; |
| unsigned validRowSize = checkedValue.unsafeGet(); |
| unsigned padding = 0; |
| unsigned residual = validRowSize % alignment; |
| if (residual) { |
| padding = alignment - residual; |
| checkedValue += padding; |
| } |
| // Last row needs no padding. |
| checkedValue *= (height - 1); |
| checkedValue += validRowSize; |
| if (checkedValue.hasOverflowed()) |
| return GraphicsContextGL::INVALID_VALUE; |
| *imageSizeInBytes = checkedValue.unsafeGet(); |
| if (paddingInBytes) |
| *paddingInBytes = padding; |
| return GraphicsContextGL::NO_ERROR; |
| } |
| |
| GraphicsContextGLOpenGL::ImageExtractor::ImageExtractor(Image* image, DOMSource imageHtmlDomSource, bool premultiplyAlpha, bool ignoreGammaAndColorProfile) |
| { |
| m_image = image; |
| m_imageHtmlDomSource = imageHtmlDomSource; |
| m_extractSucceeded = extractImage(premultiplyAlpha, ignoreGammaAndColorProfile); |
| } |
| |
| bool GraphicsContextGLOpenGL::packImageData(Image* image, const void* pixels, GCGLenum format, GCGLenum type, bool flipY, AlphaOp alphaOp, DataFormat sourceFormat, unsigned width, unsigned height, unsigned sourceUnpackAlignment, Vector<uint8_t>& data) |
| { |
| if (!image || !pixels) |
| return false; |
| |
| unsigned packedSize; |
| // Output data is tightly packed (alignment == 1). |
| if (computeImageSizeInBytes(format, type, width, height, 1, &packedSize, nullptr) != GraphicsContextGL::NO_ERROR) |
| return false; |
| data.resize(packedSize); |
| |
| if (!packPixels(reinterpret_cast<const uint8_t*>(pixels), sourceFormat, width, height, sourceUnpackAlignment, format, type, alphaOp, data.data(), flipY)) |
| return false; |
| if (ImageObserver* observer = image->imageObserver()) |
| observer->didDraw(*image); |
| return true; |
| } |
| |
| bool GraphicsContextGLOpenGL::extractImageData(ImageData* imageData, GCGLenum format, GCGLenum type, bool flipY, bool premultiplyAlpha, Vector<uint8_t>& data) |
| { |
| if (!imageData) |
| return false; |
| int width = imageData->width(); |
| int height = imageData->height(); |
| |
| unsigned packedSize; |
| // Output data is tightly packed (alignment == 1). |
| if (computeImageSizeInBytes(format, type, width, height, 1, &packedSize, nullptr) != GraphicsContextGL::NO_ERROR) |
| return false; |
| data.resize(packedSize); |
| |
| if (!packPixels(imageData->data()->data(), GraphicsContextGL::DataFormat::RGBA8, width, height, 0, format, type, premultiplyAlpha ? AlphaOp::DoPremultiply : AlphaOp::DoNothing, data.data(), flipY)) |
| return false; |
| |
| return true; |
| } |
| |
| bool GraphicsContextGLOpenGL::extractTextureData(unsigned width, unsigned height, GCGLenum format, GCGLenum type, unsigned unpackAlignment, bool flipY, bool premultiplyAlpha, const void* pixels, Vector<uint8_t>& data) |
| { |
| // Assumes format, type, etc. have already been validated. |
| DataFormat sourceDataFormat = getDataFormat(format, type); |
| |
| // Resize the output buffer. |
| unsigned componentsPerPixel, bytesPerComponent; |
| if (!computeFormatAndTypeParameters(format, type, &componentsPerPixel, &bytesPerComponent)) |
| return false; |
| unsigned bytesPerPixel = componentsPerPixel * bytesPerComponent; |
| data.resize(width * height * bytesPerPixel); |
| |
| if (!packPixels(static_cast<const uint8_t*>(pixels), sourceDataFormat, width, height, unpackAlignment, format, type, (premultiplyAlpha ? AlphaOp::DoPremultiply : AlphaOp::DoNothing), data.data(), flipY)) |
| return false; |
| |
| return true; |
| } |
| |
| ALWAYS_INLINE unsigned TexelBytesForFormat(GraphicsContextGL::DataFormat format) |
| { |
| switch (format) { |
| case GraphicsContextGL::DataFormat::R8: |
| case GraphicsContextGL::DataFormat::A8: |
| return 1; |
| case GraphicsContextGL::DataFormat::RA8: |
| case GraphicsContextGL::DataFormat::AR8: |
| case GraphicsContextGL::DataFormat::RGBA5551: |
| case GraphicsContextGL::DataFormat::RGBA4444: |
| case GraphicsContextGL::DataFormat::RGB565: |
| case GraphicsContextGL::DataFormat::A16F: |
| case GraphicsContextGL::DataFormat::R16F: |
| return 2; |
| case GraphicsContextGL::DataFormat::RGB8: |
| case GraphicsContextGL::DataFormat::BGR8: |
| return 3; |
| case GraphicsContextGL::DataFormat::RGBA8: |
| case GraphicsContextGL::DataFormat::ARGB8: |
| case GraphicsContextGL::DataFormat::ABGR8: |
| case GraphicsContextGL::DataFormat::BGRA8: |
| case GraphicsContextGL::DataFormat::R32F: |
| case GraphicsContextGL::DataFormat::A32F: |
| case GraphicsContextGL::DataFormat::RA16F: |
| return 4; |
| case GraphicsContextGL::DataFormat::RGB16F: |
| return 6; |
| case GraphicsContextGL::DataFormat::RA32F: |
| case GraphicsContextGL::DataFormat::RGBA16F: |
| return 8; |
| case GraphicsContextGL::DataFormat::RGB32F: |
| return 12; |
| case GraphicsContextGL::DataFormat::RGBA32F: |
| return 16; |
| default: |
| return 0; |
| } |
| } |
| |
| bool GraphicsContextGLOpenGL::packPixels(const uint8_t* sourceData, DataFormat sourceDataFormat, unsigned width, unsigned height, unsigned sourceUnpackAlignment, unsigned destinationFormat, unsigned destinationType, AlphaOp alphaOp, void* destinationData, bool flipY) |
| { |
| int validSrc = width * TexelBytesForFormat(sourceDataFormat); |
| int remainder = sourceUnpackAlignment ? (validSrc % sourceUnpackAlignment) : 0; |
| int srcStride = remainder ? (validSrc + sourceUnpackAlignment - remainder) : validSrc; |
| |
| // FIXME: Implement packing pixels to WebGL 2 formats |
| switch (destinationFormat) { |
| case GraphicsContextGL::RED: |
| case GraphicsContextGL::RED_INTEGER: |
| case GraphicsContextGL::RG: |
| case GraphicsContextGL::RG_INTEGER: |
| case GraphicsContextGL::RGB_INTEGER: |
| case GraphicsContextGL::RGBA_INTEGER: |
| case GraphicsContextGL::DEPTH_COMPONENT: |
| case GraphicsContextGL::DEPTH_STENCIL: |
| return false; |
| } |
| switch (destinationType) { |
| case GraphicsContextGL::BYTE: |
| case GraphicsContextGL::SHORT: |
| case GraphicsContextGL::INT: |
| case GraphicsContextGL::UNSIGNED_INT_2_10_10_10_REV: |
| case GraphicsContextGL::UNSIGNED_INT_10F_11F_11F_REV: |
| case GraphicsContextGL::UNSIGNED_INT_5_9_9_9_REV: |
| case GraphicsContextGL::UNSIGNED_INT_24_8: |
| return false; |
| } |
| |
| DataFormat dstDataFormat = getDataFormat(destinationFormat, destinationType); |
| int dstStride = width * TexelBytesForFormat(dstDataFormat); |
| if (flipY) { |
| destinationData = static_cast<uint8_t*>(destinationData) + dstStride*(height - 1); |
| dstStride = -dstStride; |
| } |
| if (!hasAlpha(sourceDataFormat) || !hasColor(sourceDataFormat) || !hasColor(dstDataFormat)) |
| alphaOp = AlphaOp::DoNothing; |
| |
| if (sourceDataFormat == dstDataFormat && alphaOp == AlphaOp::DoNothing) { |
| const uint8_t* ptr = sourceData; |
| const uint8_t* ptrEnd = sourceData + srcStride * height; |
| unsigned rowSize = (dstStride > 0) ? dstStride: -dstStride; |
| uint8_t* dst = static_cast<uint8_t*>(destinationData); |
| while (ptr < ptrEnd) { |
| memcpy(dst, ptr, rowSize); |
| ptr += srcStride; |
| dst += dstStride; |
| } |
| return true; |
| } |
| |
| FormatConverter converter(width, height, sourceData, destinationData, srcStride, dstStride); |
| converter.convert(sourceDataFormat, dstDataFormat, alphaOp); |
| if (!converter.success()) |
| return false; |
| return true; |
| } |
| |
| #if !(PLATFORM(COCOA) && (USE(OPENGL) || USE(ANGLE))) |
| void GraphicsContextGLOpenGL::setContextVisibility(bool) |
| { |
| } |
| #endif |
| |
| #if !PLATFORM(COCOA) |
| void GraphicsContextGLOpenGL::simulateContextChanged() |
| { |
| } |
| #endif |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(GRAPHICS_CONTEXT_GL) |
