gecko-dev/dom/canvas/WebGLExtensionTextureHalfFloat.cpp

66 lines
2.4 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WebGLExtensions.h"
#include "mozilla/dom/WebGLRenderingContextBinding.h"
#include "WebGLContext.h"
#include "WebGLFormats.h"
namespace mozilla {
using mozilla::webgl::EffectiveFormat;
void
WebGLExtensionTextureHalfFloat::InitWebGLFormats(webgl::FormatUsageAuthority* authority)
{
MOZ_ASSERT(authority);
auto addFormatIfMissing = [authority](EffectiveFormat effectiveFormat)
{
if (!authority->GetUsage(effectiveFormat)) {
authority->AddFormat(effectiveFormat, false, false, false, false);
}
};
// Populate authority with any missing effective formats.
addFormatIfMissing(EffectiveFormat::RGBA16F);
addFormatIfMissing(EffectiveFormat::RGB16F);
addFormatIfMissing(EffectiveFormat::Luminance16FAlpha16F);
addFormatIfMissing(EffectiveFormat::Luminance16F);
addFormatIfMissing(EffectiveFormat::Alpha16F);
}
WebGLExtensionTextureHalfFloat::WebGLExtensionTextureHalfFloat(WebGLContext* webgl)
: WebGLExtensionBase(webgl)
{
webgl::FormatUsageAuthority* authority = webgl->mFormatUsage.get();
auto updateUsage = [authority](EffectiveFormat effectiveFormat,
GLenum unpackFormat, GLenum unpackType)
{
webgl::FormatUsageInfo* usage = authority->GetUsage(effectiveFormat);
MOZ_ASSERT(usage);
usage->asTexture = true;
authority->AddUnpackOption(unpackFormat, unpackType, effectiveFormat);
};
InitWebGLFormats(authority);
// Update usage to allow asTexture and add unpack
updateUsage(EffectiveFormat::RGBA16F , LOCAL_GL_RGBA , LOCAL_GL_HALF_FLOAT_OES);
updateUsage(EffectiveFormat::RGB16F , LOCAL_GL_RGB , LOCAL_GL_HALF_FLOAT_OES);
updateUsage(EffectiveFormat::Luminance16FAlpha16F, LOCAL_GL_LUMINANCE_ALPHA, LOCAL_GL_HALF_FLOAT_OES);
updateUsage(EffectiveFormat::Luminance16F , LOCAL_GL_LUMINANCE , LOCAL_GL_HALF_FLOAT_OES);
updateUsage(EffectiveFormat::Alpha16F , LOCAL_GL_ALPHA , LOCAL_GL_HALF_FLOAT_OES);
}
WebGLExtensionTextureHalfFloat::~WebGLExtensionTextureHalfFloat()
{
}
IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionTextureHalfFloat, OES_texture_half_float)
} // namespace mozilla