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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/canvas/WebGLExtensionTextureFloat.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/canvas/WebGLExtensionTextureFloat.cpp')
-rw-r--r--dom/canvas/WebGLExtensionTextureFloat.cpp122
1 files changed, 122 insertions, 0 deletions
diff --git a/dom/canvas/WebGLExtensionTextureFloat.cpp b/dom/canvas/WebGLExtensionTextureFloat.cpp
new file mode 100644
index 000000000..4568e994e
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+++ b/dom/canvas/WebGLExtensionTextureFloat.cpp
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+/* 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 "GLContext.h"
+#include "mozilla/dom/WebGLRenderingContextBinding.h"
+#include "WebGLContext.h"
+#include "WebGLFormats.h"
+
+namespace mozilla {
+
+WebGLExtensionTextureFloat::WebGLExtensionTextureFloat(WebGLContext* webgl)
+ : WebGLExtensionBase(webgl)
+{
+ MOZ_ASSERT(IsSupported(webgl));
+
+ auto& fua = webgl->mFormatUsage;
+ gl::GLContext* gl = webgl->GL();
+
+ webgl::PackingInfo pi;
+ webgl::DriverUnpackInfo dui;
+ const GLint* swizzle = nullptr;
+
+ const auto fnAdd = [&fua, &pi, &dui, &swizzle](webgl::EffectiveFormat effFormat)
+ {
+ auto usage = fua->EditUsage(effFormat);
+ usage->textureSwizzleRGBA = swizzle;
+ fua->AddTexUnpack(usage, pi, dui);
+
+ fua->AllowUnsizedTexFormat(pi, usage);
+ };
+
+ const bool needsSwizzle = gl->IsCoreProfile();
+ MOZ_ASSERT_IF(needsSwizzle, gl->IsSupported(gl::GLFeature::texture_swizzle));
+
+ const bool needsSizedFormat = !gl->IsGLES();
+
+ ////////////////
+
+ pi = {LOCAL_GL_RGBA, LOCAL_GL_FLOAT};
+ dui = {pi.format, pi.format, pi.type};
+ swizzle = nullptr;
+ if (needsSizedFormat) {
+ dui.internalFormat = LOCAL_GL_RGBA32F;
+ }
+ fnAdd(webgl::EffectiveFormat::RGBA32F);
+
+ //////
+
+ pi = {LOCAL_GL_RGB, LOCAL_GL_FLOAT};
+ dui = {pi.format, pi.format, pi.type};
+ swizzle = nullptr;
+ if (needsSizedFormat) {
+ dui.internalFormat = LOCAL_GL_RGB32F;
+ }
+ fnAdd(webgl::EffectiveFormat::RGB32F);
+
+ //////
+
+ pi = {LOCAL_GL_LUMINANCE, LOCAL_GL_FLOAT};
+ dui = {pi.format, pi.format, pi.type};
+ swizzle = nullptr;
+ if (needsSwizzle) {
+ dui = {LOCAL_GL_R32F, LOCAL_GL_RED, LOCAL_GL_FLOAT};
+ swizzle = webgl::FormatUsageInfo::kLuminanceSwizzleRGBA;
+ } else if (needsSizedFormat) {
+ dui.internalFormat = LOCAL_GL_LUMINANCE32F_ARB;
+ }
+ fnAdd(webgl::EffectiveFormat::Luminance32F);
+
+ //////
+
+ pi = {LOCAL_GL_ALPHA, LOCAL_GL_FLOAT};
+ dui = {pi.format, pi.format, pi.type};
+ swizzle = nullptr;
+ if (needsSwizzle) {
+ dui = {LOCAL_GL_R32F, LOCAL_GL_RED, LOCAL_GL_FLOAT};
+ swizzle = webgl::FormatUsageInfo::kAlphaSwizzleRGBA;
+ } else if (needsSizedFormat) {
+ dui.internalFormat = LOCAL_GL_ALPHA32F_ARB;
+ }
+ fnAdd(webgl::EffectiveFormat::Alpha32F);
+
+ //////
+
+ pi = {LOCAL_GL_LUMINANCE_ALPHA, LOCAL_GL_FLOAT};
+ dui = {pi.format, pi.format, pi.type};
+ swizzle = nullptr;
+ if (needsSwizzle) {
+ dui = {LOCAL_GL_RG32F, LOCAL_GL_RG, LOCAL_GL_FLOAT};
+ swizzle = webgl::FormatUsageInfo::kLumAlphaSwizzleRGBA;
+ } else if (needsSizedFormat) {
+ dui.internalFormat = LOCAL_GL_LUMINANCE_ALPHA32F_ARB;
+ }
+ fnAdd(webgl::EffectiveFormat::Luminance32FAlpha32F);
+}
+
+WebGLExtensionTextureFloat::~WebGLExtensionTextureFloat()
+{
+}
+
+bool
+WebGLExtensionTextureFloat::IsSupported(const WebGLContext* webgl)
+{
+ gl::GLContext* gl = webgl->GL();
+
+ if (!gl->IsSupported(gl::GLFeature::texture_float))
+ return false;
+
+ const bool needsSwizzle = gl->IsCoreProfile();
+ const bool hasSwizzle = gl->IsSupported(gl::GLFeature::texture_swizzle);
+ if (needsSwizzle && !hasSwizzle)
+ return false;
+
+ return true;
+}
+
+IMPL_WEBGL_EXTENSION_GOOP(WebGLExtensionTextureFloat, OES_texture_float)
+
+} // namespace mozilla