diff options
Diffstat (limited to 'src/3rdparty/angle/src/libANGLE/renderer/renderer_utils.cpp')
| -rw-r--r-- | src/3rdparty/angle/src/libANGLE/renderer/renderer_utils.cpp | 549 |
1 files changed, 549 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libANGLE/renderer/renderer_utils.cpp b/src/3rdparty/angle/src/libANGLE/renderer/renderer_utils.cpp new file mode 100644 index 0000000000..55471c1d20 --- /dev/null +++ b/src/3rdparty/angle/src/libANGLE/renderer/renderer_utils.cpp @@ -0,0 +1,549 @@ +// +// Copyright 2016 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// +// renderer_utils: +// Helper methods pertaining to most or all back-ends. +// + +#include "libANGLE/renderer/renderer_utils.h" + +#include "image_util/copyimage.h" +#include "image_util/imageformats.h" + +#include "libANGLE/AttributeMap.h" +#include "libANGLE/Context.h" +#include "libANGLE/formatutils.h" +#include "libANGLE/renderer/ContextImpl.h" +#include "libANGLE/renderer/Format.h" + +#include <string.h> + +namespace rx +{ + +namespace +{ +typedef std::pair<gl::FormatType, ColorWriteFunction> FormatWriteFunctionPair; +typedef std::map<gl::FormatType, ColorWriteFunction> FormatWriteFunctionMap; + +static inline void InsertFormatWriteFunctionMapping(FormatWriteFunctionMap *map, + GLenum format, + GLenum type, + ColorWriteFunction writeFunc) +{ + map->insert(FormatWriteFunctionPair(gl::FormatType(format, type), writeFunc)); +} + +static FormatWriteFunctionMap BuildFormatWriteFunctionMap() +{ + using namespace angle; // For image writing functions + + FormatWriteFunctionMap map; + + // clang-format off + // | Format | Type | Color write function | + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_BYTE, WriteColor<R8G8B8A8, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_BYTE, WriteColor<R8G8B8A8S, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, WriteColor<R4G4B4A4, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT_5_5_5_1, WriteColor<R5G5B5A1, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, WriteColor<R10G10B10A2, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_FLOAT, WriteColor<R32G32B32A32F, GLfloat>); + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_HALF_FLOAT, WriteColor<R16G16B16A16F, GLfloat>); + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_HALF_FLOAT_OES, WriteColor<R16G16B16A16F, GLfloat>); + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_UNSIGNED_SHORT, + WriteColor<R16G16B16A16, GLfloat>); + InsertFormatWriteFunctionMapping(&map, GL_RGBA, GL_SHORT, WriteColor<R16G16B16A16S, GLfloat>); + + InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_BYTE, WriteColor<R8G8B8A8, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_BYTE, WriteColor<R8G8B8A8S, GLint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT, WriteColor<R16G16B16A16, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_SHORT, WriteColor<R16G16B16A16S, GLint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_INT, WriteColor<R32G32B32A32, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_INT, WriteColor<R32G32B32A32S, GLint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGBA_INTEGER, GL_UNSIGNED_INT_2_10_10_10_REV, WriteColor<R10G10B10A2, GLuint> ); + + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_BYTE, WriteColor<R8G8B8, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_BYTE, WriteColor<R8G8B8S, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, WriteColor<R5G6B5, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, WriteColor<R11G11B10F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_INT_5_9_9_9_REV, WriteColor<R9G9B9E5, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_FLOAT, WriteColor<R32G32B32F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_HALF_FLOAT, WriteColor<R16G16B16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_HALF_FLOAT_OES, WriteColor<R16G16B16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_UNSIGNED_SHORT, + WriteColor<R16G16B16, GLfloat>); + InsertFormatWriteFunctionMapping(&map, GL_RGB, GL_SHORT, WriteColor<R16G16B16S, GLfloat>); + + InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_UNSIGNED_BYTE, WriteColor<R8G8B8, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_BYTE, WriteColor<R8G8B8S, GLint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_UNSIGNED_SHORT, WriteColor<R16G16B16, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_SHORT, WriteColor<R16G16B16S, GLint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_UNSIGNED_INT, WriteColor<R32G32B32, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RGB_INTEGER, GL_INT, WriteColor<R32G32B32S, GLint> ); + + InsertFormatWriteFunctionMapping(&map, GL_RG, GL_UNSIGNED_BYTE, WriteColor<R8G8, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RG, GL_BYTE, WriteColor<R8G8S, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RG, GL_FLOAT, WriteColor<R32G32F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RG, GL_HALF_FLOAT, WriteColor<R16G16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RG, GL_HALF_FLOAT_OES, WriteColor<R16G16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RG, GL_UNSIGNED_SHORT, WriteColor<R16G16, GLfloat>); + InsertFormatWriteFunctionMapping(&map, GL_RG, GL_SHORT, WriteColor<R16G16S, GLfloat>); + + InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_UNSIGNED_BYTE, WriteColor<R8G8, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_BYTE, WriteColor<R8G8S, GLint> ); + InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_UNSIGNED_SHORT, WriteColor<R16G16, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_SHORT, WriteColor<R16G16S, GLint> ); + InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_UNSIGNED_INT, WriteColor<R32G32, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RG_INTEGER, GL_INT, WriteColor<R32G32S, GLint> ); + + InsertFormatWriteFunctionMapping(&map, GL_RED, GL_UNSIGNED_BYTE, WriteColor<R8, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RED, GL_BYTE, WriteColor<R8S, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RED, GL_FLOAT, WriteColor<R32F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RED, GL_HALF_FLOAT, WriteColor<R16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RED, GL_HALF_FLOAT_OES, WriteColor<R16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_RED, GL_UNSIGNED_SHORT, WriteColor<R16, GLfloat>); + InsertFormatWriteFunctionMapping(&map, GL_RED, GL_SHORT, WriteColor<R16S, GLfloat>); + + InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_UNSIGNED_BYTE, WriteColor<R8, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_BYTE, WriteColor<R8S, GLint> ); + InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_UNSIGNED_SHORT, WriteColor<R16, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_SHORT, WriteColor<R16S, GLint> ); + InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_UNSIGNED_INT, WriteColor<R32, GLuint> ); + InsertFormatWriteFunctionMapping(&map, GL_RED_INTEGER, GL_INT, WriteColor<R32S, GLint> ); + + InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, WriteColor<L8A8, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE, GL_UNSIGNED_BYTE, WriteColor<L8, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_ALPHA, GL_UNSIGNED_BYTE, WriteColor<A8, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE_ALPHA, GL_FLOAT, WriteColor<L32A32F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE, GL_FLOAT, WriteColor<L32F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_ALPHA, GL_FLOAT, WriteColor<A32F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT, WriteColor<L16A16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE_ALPHA, GL_HALF_FLOAT_OES, WriteColor<L16A16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE, GL_HALF_FLOAT, WriteColor<L16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_LUMINANCE, GL_HALF_FLOAT_OES, WriteColor<L16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_ALPHA, GL_HALF_FLOAT, WriteColor<A16F, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_ALPHA, GL_HALF_FLOAT_OES, WriteColor<A16F, GLfloat> ); + + InsertFormatWriteFunctionMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_BYTE, WriteColor<B8G8R8A8, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT, WriteColor<A4R4G4B4, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_BGRA_EXT, GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT, WriteColor<A1R5G5B5, GLfloat> ); + + InsertFormatWriteFunctionMapping(&map, GL_SRGB_EXT, GL_UNSIGNED_BYTE, WriteColor<R8G8B8, GLfloat> ); + InsertFormatWriteFunctionMapping(&map, GL_SRGB_ALPHA_EXT, GL_UNSIGNED_BYTE, WriteColor<R8G8B8A8, GLfloat> ); + + InsertFormatWriteFunctionMapping(&map, GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, nullptr ); + InsertFormatWriteFunctionMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, GL_UNSIGNED_BYTE, nullptr ); + InsertFormatWriteFunctionMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE, GL_UNSIGNED_BYTE, nullptr ); + InsertFormatWriteFunctionMapping(&map, GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE, GL_UNSIGNED_BYTE, nullptr ); + + InsertFormatWriteFunctionMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_SHORT, nullptr ); + InsertFormatWriteFunctionMapping(&map, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, nullptr ); + InsertFormatWriteFunctionMapping(&map, GL_DEPTH_COMPONENT, GL_FLOAT, nullptr ); + + InsertFormatWriteFunctionMapping(&map, GL_STENCIL, GL_UNSIGNED_BYTE, nullptr ); + + InsertFormatWriteFunctionMapping(&map, GL_DEPTH_STENCIL, GL_UNSIGNED_INT_24_8, nullptr ); + InsertFormatWriteFunctionMapping(&map, GL_DEPTH_STENCIL, GL_FLOAT_32_UNSIGNED_INT_24_8_REV, nullptr ); + // clang-format on + + return map; +} + +void CopyColor(gl::ColorF *color) +{ + // No-op +} + +void PremultiplyAlpha(gl::ColorF *color) +{ + color->red *= color->alpha; + color->green *= color->alpha; + color->blue *= color->alpha; +} + +void UnmultiplyAlpha(gl::ColorF *color) +{ + if (color->alpha != 0.0f) + { + float invAlpha = 1.0f / color->alpha; + color->red *= invAlpha; + color->green *= invAlpha; + color->blue *= invAlpha; + } +} + +void ClipChannelsR(gl::ColorF *color) +{ + color->green = 0.0f; + color->blue = 0.0f; + color->alpha = 1.0f; +} + +void ClipChannelsRG(gl::ColorF *color) +{ + color->blue = 0.0f; + color->alpha = 1.0f; +} + +void ClipChannelsRGB(gl::ColorF *color) +{ + color->alpha = 1.0f; +} + +void ClipChannelsLuminance(gl::ColorF *color) +{ + color->alpha = 1.0f; +} + +void ClipChannelsAlpha(gl::ColorF *color) +{ + color->red = 0.0f; + color->green = 0.0f; + color->blue = 0.0f; +} + +void ClipChannelsNoOp(gl::ColorF *color) +{ +} + +void WriteUintColor(const gl::ColorF &color, + ColorWriteFunction colorWriteFunction, + uint8_t *destPixelData) +{ + gl::ColorUI destColor( + static_cast<unsigned int>(color.red * 255), static_cast<unsigned int>(color.green * 255), + static_cast<unsigned int>(color.blue * 255), static_cast<unsigned int>(color.alpha * 255)); + colorWriteFunction(reinterpret_cast<const uint8_t *>(&destColor), destPixelData); +} + +void WriteFloatColor(const gl::ColorF &color, + ColorWriteFunction colorWriteFunction, + uint8_t *destPixelData) +{ + colorWriteFunction(reinterpret_cast<const uint8_t *>(&color), destPixelData); +} + +} // anonymous namespace + +PackPixelsParams::PackPixelsParams() + : format(GL_NONE), type(GL_NONE), outputPitch(0), packBuffer(nullptr), offset(0) +{ +} + +PackPixelsParams::PackPixelsParams(const gl::Rectangle &areaIn, + GLenum formatIn, + GLenum typeIn, + GLuint outputPitchIn, + const gl::PixelPackState &packIn, + gl::Buffer *packBufferIn, + ptrdiff_t offsetIn) + : area(areaIn), + format(formatIn), + type(typeIn), + outputPitch(outputPitchIn), + packBuffer(packBufferIn), + pack(), + offset(offsetIn) +{ + pack.alignment = packIn.alignment; + pack.reverseRowOrder = packIn.reverseRowOrder; +} + +void PackPixels(const PackPixelsParams ¶ms, + const angle::Format &sourceFormat, + int inputPitchIn, + const uint8_t *sourceIn, + uint8_t *destWithoutOffset) +{ + uint8_t *destWithOffset = destWithoutOffset + params.offset; + + const uint8_t *source = sourceIn; + int inputPitch = inputPitchIn; + + if (params.pack.reverseRowOrder) + { + source += inputPitch * (params.area.height - 1); + inputPitch = -inputPitch; + } + + const auto &sourceGLInfo = gl::GetSizedInternalFormatInfo(sourceFormat.glInternalFormat); + + if (sourceGLInfo.format == params.format && sourceGLInfo.type == params.type) + { + // Direct copy possible + for (int y = 0; y < params.area.height; ++y) + { + memcpy(destWithOffset + y * params.outputPitch, source + y * inputPitch, + params.area.width * sourceGLInfo.pixelBytes); + } + return; + } + + ASSERT(sourceGLInfo.sized); + + gl::FormatType formatType(params.format, params.type); + ColorCopyFunction fastCopyFunc = + GetFastCopyFunction(sourceFormat.fastCopyFunctions, formatType); + const auto &destFormatInfo = gl::GetInternalFormatInfo(formatType.format, formatType.type); + + if (fastCopyFunc) + { + // Fast copy is possible through some special function + for (int y = 0; y < params.area.height; ++y) + { + for (int x = 0; x < params.area.width; ++x) + { + uint8_t *dest = + destWithOffset + y * params.outputPitch + x * destFormatInfo.pixelBytes; + const uint8_t *src = source + y * inputPitch + x * sourceGLInfo.pixelBytes; + + fastCopyFunc(src, dest); + } + } + return; + } + + ColorWriteFunction colorWriteFunction = GetColorWriteFunction(formatType); + + // Maximum size of any Color<T> type used. + uint8_t temp[16]; + static_assert(sizeof(temp) >= sizeof(gl::ColorF) && sizeof(temp) >= sizeof(gl::ColorUI) && + sizeof(temp) >= sizeof(gl::ColorI), + "Unexpected size of gl::Color struct."); + + const auto &colorReadFunction = sourceFormat.colorReadFunction; + + for (int y = 0; y < params.area.height; ++y) + { + for (int x = 0; x < params.area.width; ++x) + { + uint8_t *dest = destWithOffset + y * params.outputPitch + x * destFormatInfo.pixelBytes; + const uint8_t *src = source + y * inputPitch + x * sourceGLInfo.pixelBytes; + + // readFunc and writeFunc will be using the same type of color, CopyTexImage + // will not allow the copy otherwise. + colorReadFunction(src, temp); + colorWriteFunction(temp, dest); + } + } +} + +ColorWriteFunction GetColorWriteFunction(const gl::FormatType &formatType) +{ + static const FormatWriteFunctionMap formatTypeMap = BuildFormatWriteFunctionMap(); + auto iter = formatTypeMap.find(formatType); + ASSERT(iter != formatTypeMap.end()); + if (iter != formatTypeMap.end()) + { + return iter->second; + } + else + { + return nullptr; + } +} + +ColorCopyFunction GetFastCopyFunction(const FastCopyFunctionMap &fastCopyFunctions, + const gl::FormatType &formatType) +{ + return fastCopyFunctions.get(formatType); +} + +bool FastCopyFunctionMap::has(const gl::FormatType &formatType) const +{ + return (get(formatType) != nullptr); +} + +ColorCopyFunction FastCopyFunctionMap::get(const gl::FormatType &formatType) const +{ + for (size_t index = 0; index < mSize; ++index) + { + if (mData[index].format == formatType.format && mData[index].type == formatType.type) + { + return mData[index].func; + } + } + + return nullptr; +} + +bool ShouldUseDebugLayers(const egl::AttributeMap &attribs) +{ + EGLAttrib debugSetting = + attribs.get(EGL_PLATFORM_ANGLE_DEBUG_LAYERS_ENABLED_ANGLE, EGL_DONT_CARE); + +// Prefer to enable debug layers if compiling in Debug, and disabled in Release. +#if !defined(NDEBUG) + return (debugSetting != EGL_FALSE); +#else + return (debugSetting == EGL_TRUE); +#endif // !defined(NDEBUG) +} + +void CopyImageCHROMIUM(const uint8_t *sourceData, + size_t sourceRowPitch, + size_t sourcePixelBytes, + ColorReadFunction colorReadFunction, + uint8_t *destData, + size_t destRowPitch, + size_t destPixelBytes, + ColorWriteFunction colorWriteFunction, + GLenum destUnsizedFormat, + GLenum destComponentType, + size_t width, + size_t height, + bool unpackFlipY, + bool unpackPremultiplyAlpha, + bool unpackUnmultiplyAlpha) +{ + using ConversionFunction = void (*)(gl::ColorF *); + ConversionFunction conversionFunction = CopyColor; + if (unpackPremultiplyAlpha != unpackUnmultiplyAlpha) + { + if (unpackPremultiplyAlpha) + { + conversionFunction = PremultiplyAlpha; + } + else + { + conversionFunction = UnmultiplyAlpha; + } + } + + auto clipChannelsFunction = ClipChannelsNoOp; + switch (destUnsizedFormat) + { + case GL_RED: + clipChannelsFunction = ClipChannelsR; + break; + case GL_RG: + clipChannelsFunction = ClipChannelsRG; + break; + case GL_RGB: + clipChannelsFunction = ClipChannelsRGB; + break; + case GL_LUMINANCE: + clipChannelsFunction = ClipChannelsLuminance; + break; + case GL_ALPHA: + clipChannelsFunction = ClipChannelsAlpha; + break; + } + + auto writeFunction = (destComponentType == GL_UNSIGNED_INT) ? WriteUintColor : WriteFloatColor; + + for (size_t y = 0; y < height; y++) + { + for (size_t x = 0; x < width; x++) + { + const uint8_t *sourcePixelData = sourceData + y * sourceRowPitch + x * sourcePixelBytes; + + gl::ColorF sourceColor; + colorReadFunction(sourcePixelData, reinterpret_cast<uint8_t *>(&sourceColor)); + + conversionFunction(&sourceColor); + clipChannelsFunction(&sourceColor); + + size_t destY = 0; + if (unpackFlipY) + { + destY += (height - 1); + destY -= y; + } + else + { + destY += y; + } + + uint8_t *destPixelData = destData + destY * destRowPitch + x * destPixelBytes; + writeFunction(sourceColor, colorWriteFunction, destPixelData); + } + } +} + +// IncompleteTextureSet implementation. +IncompleteTextureSet::IncompleteTextureSet() +{ +} + +IncompleteTextureSet::~IncompleteTextureSet() +{ +} + +void IncompleteTextureSet::onDestroy(const gl::Context *context) +{ + // Clear incomplete textures. + for (auto &incompleteTexture : mIncompleteTextures) + { + ANGLE_SWALLOW_ERR(incompleteTexture.second->onDestroy(context)); + incompleteTexture.second.set(context, nullptr); + } + mIncompleteTextures.clear(); +} + +gl::Error IncompleteTextureSet::getIncompleteTexture( + const gl::Context *context, + GLenum type, + MultisampleTextureInitializer *multisampleInitializer, + gl::Texture **textureOut) +{ + auto iter = mIncompleteTextures.find(type); + if (iter != mIncompleteTextures.end()) + { + *textureOut = iter->second.get(); + return gl::NoError(); + } + + ContextImpl *implFactory = context->getImplementation(); + + const GLubyte color[] = {0, 0, 0, 255}; + const gl::Extents colorSize(1, 1, 1); + gl::PixelUnpackState unpack; + unpack.alignment = 1; + const gl::Box area(0, 0, 0, 1, 1, 1); + + // If a texture is external use a 2D texture for the incomplete texture + GLenum createType = (type == GL_TEXTURE_EXTERNAL_OES) ? GL_TEXTURE_2D : type; + + gl::Texture *tex = new gl::Texture(implFactory, std::numeric_limits<GLuint>::max(), createType); + angle::UniqueObjectPointer<gl::Texture, gl::Context> t(tex, context); + + if (createType == GL_TEXTURE_2D_MULTISAMPLE) + { + ANGLE_TRY(t->setStorageMultisample(context, createType, 1, GL_RGBA8, colorSize, true)); + } + else + { + ANGLE_TRY(t->setStorage(context, createType, 1, GL_RGBA8, colorSize)); + } + + if (type == GL_TEXTURE_CUBE_MAP) + { + for (GLenum face = GL_TEXTURE_CUBE_MAP_POSITIVE_X; face <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z; + face++) + { + ANGLE_TRY( + t->setSubImage(context, unpack, face, 0, area, GL_RGBA, GL_UNSIGNED_BYTE, color)); + } + } + else if (type == GL_TEXTURE_2D_MULTISAMPLE) + { + // Call a specialized clear function to init a multisample texture. + ANGLE_TRY(multisampleInitializer->initializeMultisampleTextureToBlack(context, t.get())); + } + else + { + ANGLE_TRY( + t->setSubImage(context, unpack, createType, 0, area, GL_RGBA, GL_UNSIGNED_BYTE, color)); + } + + t->syncState(); + + mIncompleteTextures[type].set(context, t.release()); + *textureOut = mIncompleteTextures[type].get(); + return gl::NoError(); +} + +} // namespace rx |