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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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
#include "WebGLExtensions.h"
#include "GLContext.h"
#include "mozilla/Casting.h"
#include "mozilla/dom/WebGLRenderingContextBinding.h"
#include "mozilla/ScopeExit.h"
#include "mozilla/StaticPrefs_webgl.h"
#include "WebGLContext.h"
#include "WebGLFormats.h"
namespace mozilla {
static bool TestShaderCompile(gl::GLContext* const gl, const GLenum type,
const std::string& source) {
const auto shader = gl->fCreateShader(type);
const auto cleanup = MakeScopeExit([&]() { gl->fDeleteShader(shader); });
const std::array<const char*, 1> parts = {source.c_str()};
gl->fShaderSource(shader, parts.size(), parts.data(), nullptr);
gl->fCompileShader(shader);
GLint status = 0;
gl->fGetShaderiv(shader, LOCAL_GL_COMPILE_STATUS, &status);
if (status == LOCAL_GL_TRUE) return true;
std::vector<char> chars;
chars.resize(1000);
gl->fGetShaderInfoLog(shader, LazyAssertedCast(chars.size() - 1), nullptr,
chars.data());
printf_stderr("GetShaderInfoLog() ->\n%s\n", chars.data());
gl->fGetShaderSource(shader, LazyAssertedCast(chars.size() - 1), nullptr,
chars.data());
printf_stderr("GetShaderSource() ->\n%s\n", chars.data());
return false;
}
// -
WebGLExtensionBlendMinMax::WebGLExtensionBlendMinMax(WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionBlendMinMax::IsSupported(const WebGLContext* webgl) {
if (webgl->IsWebGL2()) return false;
return webgl->GL()->IsSupported(gl::GLFeature::blend_minmax);
}
// -
WebGLExtensionColorBufferFloat::WebGLExtensionColorBufferFloat(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
SetRenderable(webgl::FormatRenderableState::Implicit(
WebGLExtensionID::WEBGL_color_buffer_float));
}
void WebGLExtensionColorBufferFloat::SetRenderable(
const webgl::FormatRenderableState& state) {
auto& fua = mContext->mFormatUsage;
auto fnUpdateUsage = [&](GLenum sizedFormat,
webgl::EffectiveFormat effFormat) {
auto usage = fua->EditUsage(effFormat);
usage->SetRenderable(state);
fua->AllowRBFormat(sizedFormat, usage);
};
#define FOO(x) fnUpdateUsage(LOCAL_GL_##x, webgl::EffectiveFormat::x)
// The extension doesn't actually add RGB32F; only RGBA32F.
FOO(RGBA32F);
#undef FOO
}
void WebGLExtensionColorBufferFloat::OnSetExplicit() {
SetRenderable(webgl::FormatRenderableState::Explicit());
}
bool WebGLExtensionColorBufferFloat::IsSupported(const WebGLContext* webgl) {
if (webgl->IsWebGL2()) return false;
const auto& gl = webgl->gl;
return gl->IsSupported(gl::GLFeature::renderbuffer_color_float) &&
gl->IsSupported(gl::GLFeature::frag_color_float);
}
// -
WebGLExtensionColorBufferHalfFloat::WebGLExtensionColorBufferHalfFloat(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
SetRenderable(webgl::FormatRenderableState::Implicit(
WebGLExtensionID::EXT_color_buffer_half_float));
}
void WebGLExtensionColorBufferHalfFloat::SetRenderable(
const webgl::FormatRenderableState& state) {
auto& fua = mContext->mFormatUsage;
auto fnUpdateUsage = [&](GLenum sizedFormat, webgl::EffectiveFormat effFormat,
const bool renderable) {
auto usage = fua->EditUsage(effFormat);
if (renderable) {
usage->SetRenderable(state);
}
fua->AllowRBFormat(sizedFormat, usage, renderable);
};
#define FOO(x, y) fnUpdateUsage(LOCAL_GL_##x, webgl::EffectiveFormat::x, y)
FOO(RGBA16F, true);
FOO(RGB16F, false); // It's not required, thus not portable. (Also there's a
// wicked driver bug on Mac+Intel)
#undef FOO
}
void WebGLExtensionColorBufferHalfFloat::OnSetExplicit() {
SetRenderable(webgl::FormatRenderableState::Explicit());
}
bool WebGLExtensionColorBufferHalfFloat::IsSupported(
const WebGLContext* webgl) {
if (webgl->IsWebGL2()) return false;
const auto& gl = webgl->gl;
return gl->IsSupported(gl::GLFeature::renderbuffer_color_half_float) &&
gl->IsSupported(gl::GLFeature::frag_color_float);
}
// -
WebGLExtensionCompressedTextureASTC::WebGLExtensionCompressedTextureASTC(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
const auto fnAdd = [&webgl_](GLenum sizedFormat,
webgl::EffectiveFormat effFormat) {
auto& fua = webgl_->mFormatUsage;
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
fua->AllowSizedTexFormat(sizedFormat, usage);
};
#define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
fnAdd(FOO(COMPRESSED_RGBA_ASTC_4x4_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_5x4_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_5x5_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_6x5_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_6x6_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_8x5_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_8x6_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_8x8_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x5_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x6_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x8_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_10x10_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_12x10_KHR));
fnAdd(FOO(COMPRESSED_RGBA_ASTC_12x12_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR));
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR));
#undef FOO
}
bool WebGLExtensionCompressedTextureASTC::IsSupported(
const WebGLContext* webgl) {
gl::GLContext* gl = webgl->GL();
return gl->IsExtensionSupported(
gl::GLContext::KHR_texture_compression_astc_ldr);
}
// -
WebGLExtensionCompressedTextureBPTC::WebGLExtensionCompressedTextureBPTC(
WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
auto& fua = webgl->mFormatUsage;
const auto fnAdd = [&](const GLenum sizedFormat,
const webgl::EffectiveFormat effFormat) {
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
fua->AllowSizedTexFormat(sizedFormat, usage);
};
#define _(X) LOCAL_GL_##X, webgl::EffectiveFormat::X
fnAdd(_(COMPRESSED_RGBA_BPTC_UNORM));
fnAdd(_(COMPRESSED_SRGB_ALPHA_BPTC_UNORM));
fnAdd(_(COMPRESSED_RGB_BPTC_SIGNED_FLOAT));
fnAdd(_(COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT));
#undef _
}
bool WebGLExtensionCompressedTextureBPTC::IsSupported(
const WebGLContext* const webgl) {
return webgl->gl->IsSupported(gl::GLFeature::texture_compression_bptc);
}
// -
WebGLExtensionCompressedTextureES3::WebGLExtensionCompressedTextureES3(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
// GLES 3.0.4, p147, table 3.19
// GLES 3.0.4, p286+, $C.1 "ETC Compressed Texture Image Formats"
// Note that all compressed texture formats are filterable:
// GLES 3.0.4 p161:
// "[A] texture is complete unless any of the following conditions hold true:
// [...]
// * The effective internal format specified for the texture arrays is a
// sized internal color format that is not texture-filterable (see table
// 3.13) and [the mag filter requires filtering]."
// Compressed formats are not sized internal color formats, and indeed they
// are not listed in table 3.13.
const auto fnAdd = [&webgl_](GLenum sizedFormat,
webgl::EffectiveFormat effFormat) {
auto& fua = webgl_->mFormatUsage;
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
fua->AllowSizedTexFormat(sizedFormat, usage);
};
#define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
fnAdd(FOO(COMPRESSED_R11_EAC));
fnAdd(FOO(COMPRESSED_SIGNED_R11_EAC));
fnAdd(FOO(COMPRESSED_RG11_EAC));
fnAdd(FOO(COMPRESSED_SIGNED_RG11_EAC));
fnAdd(FOO(COMPRESSED_RGB8_ETC2));
fnAdd(FOO(COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2));
fnAdd(FOO(COMPRESSED_RGBA8_ETC2_EAC));
// sRGB support is manadatory in GL 4.3 and GL ES 3.0, which are the only
// versions to support ETC2.
fnAdd(FOO(COMPRESSED_SRGB8_ALPHA8_ETC2_EAC));
fnAdd(FOO(COMPRESSED_SRGB8_ETC2));
fnAdd(FOO(COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2));
#undef FOO
}
// -
WebGLExtensionCompressedTextureETC1::WebGLExtensionCompressedTextureETC1(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
const auto fnAdd = [&webgl_](GLenum sizedFormat,
webgl::EffectiveFormat effFormat) {
auto& fua = webgl_->mFormatUsage;
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
fua->AllowSizedTexFormat(sizedFormat, usage);
};
#define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
fnAdd(FOO(ETC1_RGB8_OES));
#undef FOO
}
// -
WebGLExtensionCompressedTexturePVRTC::WebGLExtensionCompressedTexturePVRTC(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
const auto fnAdd = [&webgl_](GLenum sizedFormat,
webgl::EffectiveFormat effFormat) {
auto& fua = webgl_->mFormatUsage;
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
fua->AllowSizedTexFormat(sizedFormat, usage);
};
#define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
fnAdd(FOO(COMPRESSED_RGB_PVRTC_4BPPV1));
fnAdd(FOO(COMPRESSED_RGB_PVRTC_2BPPV1));
fnAdd(FOO(COMPRESSED_RGBA_PVRTC_4BPPV1));
fnAdd(FOO(COMPRESSED_RGBA_PVRTC_2BPPV1));
#undef FOO
}
// -
WebGLExtensionCompressedTextureRGTC::WebGLExtensionCompressedTextureRGTC(
WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
auto& fua = webgl->mFormatUsage;
const auto fnAdd = [&](const GLenum sizedFormat,
const webgl::EffectiveFormat effFormat) {
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
fua->AllowSizedTexFormat(sizedFormat, usage);
};
#define _(X) LOCAL_GL_##X, webgl::EffectiveFormat::X
fnAdd(_(COMPRESSED_RED_RGTC1));
fnAdd(_(COMPRESSED_SIGNED_RED_RGTC1));
fnAdd(_(COMPRESSED_RG_RGTC2));
fnAdd(_(COMPRESSED_SIGNED_RG_RGTC2));
#undef _
}
bool WebGLExtensionCompressedTextureRGTC::IsSupported(
const WebGLContext* const webgl) {
return webgl->gl->IsSupported(gl::GLFeature::texture_compression_rgtc);
}
// -
WebGLExtensionCompressedTextureS3TC::WebGLExtensionCompressedTextureS3TC(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
const auto fnAdd = [&webgl_](GLenum sizedFormat,
webgl::EffectiveFormat effFormat) {
auto& fua = webgl_->mFormatUsage;
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
fua->AllowSizedTexFormat(sizedFormat, usage);
};
#define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
fnAdd(FOO(COMPRESSED_RGB_S3TC_DXT1_EXT));
fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT1_EXT));
fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT3_EXT));
fnAdd(FOO(COMPRESSED_RGBA_S3TC_DXT5_EXT));
#undef FOO
}
bool WebGLExtensionCompressedTextureS3TC::IsSupported(
const WebGLContext* webgl) {
gl::GLContext* gl = webgl->GL();
if (gl->IsExtensionSupported(gl::GLContext::EXT_texture_compression_s3tc))
return true;
return gl->IsExtensionSupported(
gl::GLContext::EXT_texture_compression_dxt1) &&
gl->IsExtensionSupported(
gl::GLContext::ANGLE_texture_compression_dxt3) &&
gl->IsExtensionSupported(
gl::GLContext::ANGLE_texture_compression_dxt5);
}
// -
WebGLExtensionCompressedTextureS3TC_SRGB::
WebGLExtensionCompressedTextureS3TC_SRGB(WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
const auto fnAdd = [&webgl_](GLenum sizedFormat,
webgl::EffectiveFormat effFormat) {
auto& fua = webgl_->mFormatUsage;
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
fua->AllowSizedTexFormat(sizedFormat, usage);
};
#define FOO(x) LOCAL_GL_##x, webgl::EffectiveFormat::x
fnAdd(FOO(COMPRESSED_SRGB_S3TC_DXT1_EXT));
fnAdd(FOO(COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT));
fnAdd(FOO(COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT));
fnAdd(FOO(COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT));
#undef FOO
}
bool WebGLExtensionCompressedTextureS3TC_SRGB::IsSupported(
const WebGLContext* webgl) {
gl::GLContext* gl = webgl->GL();
if (gl->IsGLES())
return gl->IsExtensionSupported(
gl::GLContext::EXT_texture_compression_s3tc_srgb);
// Desktop GL is more complicated: It's EXT_texture_sRGB, when
// EXT_texture_compression_s3tc is supported, that enables srgb+s3tc.
return gl->IsExtensionSupported(gl::GLContext::EXT_texture_sRGB) &&
gl->IsExtensionSupported(gl::GLContext::EXT_texture_compression_s3tc);
}
// -
WebGLExtensionDepthClamp::WebGLExtensionDepthClamp(WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
webgl->mIsEnabledMapKeys.insert(LOCAL_GL_DEPTH_CLAMP);
}
// -
WebGLExtensionDepthTexture::WebGLExtensionDepthTexture(
WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
auto& fua = webgl->mFormatUsage;
const auto fnAdd = [&fua](webgl::EffectiveFormat effFormat,
GLenum unpackFormat, GLenum unpackType) {
auto usage = fua->EditUsage(effFormat);
MOZ_ASSERT(usage->isFilterable);
MOZ_ASSERT(usage->IsRenderable());
const webgl::PackingInfo pi = {unpackFormat, unpackType};
const webgl::DriverUnpackInfo dui = {unpackFormat, unpackFormat,
unpackType};
fua->AddTexUnpack(usage, pi, dui);
fua->AllowUnsizedTexFormat(pi, usage);
};
fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT16, LOCAL_GL_DEPTH_COMPONENT,
LOCAL_GL_UNSIGNED_SHORT);
fnAdd(webgl::EffectiveFormat::DEPTH_COMPONENT24, LOCAL_GL_DEPTH_COMPONENT,
LOCAL_GL_UNSIGNED_INT);
fnAdd(webgl::EffectiveFormat::DEPTH24_STENCIL8, LOCAL_GL_DEPTH_STENCIL,
LOCAL_GL_UNSIGNED_INT_24_8);
}
bool WebGLExtensionDepthTexture::IsSupported(const WebGLContext* const webgl) {
if (webgl->IsWebGL2()) return false;
// WEBGL_depth_texture supports DEPTH_STENCIL textures
const auto& gl = webgl->gl;
if (!gl->IsSupported(gl::GLFeature::packed_depth_stencil)) return false;
return gl->IsSupported(gl::GLFeature::depth_texture) ||
gl->IsExtensionSupported(gl::GLContext::ANGLE_depth_texture);
}
// -
WebGLExtensionDisjointTimerQuery::WebGLExtensionDisjointTimerQuery(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionDisjointTimerQuery::IsSupported(
const WebGLContext* const webgl) {
if (!StaticPrefs::webgl_enable_privileged_extensions()) return false;
gl::GLContext* gl = webgl->GL();
return gl->IsSupported(gl::GLFeature::query_objects) &&
gl->IsSupported(gl::GLFeature::get_query_object_i64v) &&
gl->IsSupported(
gl::GLFeature::query_counter); // provides GL_TIMESTAMP
}
// -
WebGLExtensionDrawBuffers::WebGLExtensionDrawBuffers(WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionDrawBuffers::IsSupported(const WebGLContext* webgl) {
if (!webgl->mIsSupportedCache_DrawBuffers) {
webgl->mIsSupportedCache_DrawBuffers = [&]() {
gl::GLContext* const gl = webgl->GL();
if (webgl->IsWebGL2()) return false;
if (!gl->IsSupported(gl::GLFeature::draw_buffers)) return false;
if (gl->IsGLES() && gl->Version() >= 300) {
// ANGLE's shader translator can't translate ESSL1 exts to ESSL3. (bug
// 1524804)
// The spec (and some implementations of ES3) don't require support for
// any extensions in ESSL 100, but an implementation can choose to
// support them anyway. So let's check!
const bool ok = TestShaderCompile(gl, LOCAL_GL_FRAGMENT_SHADER, R"(
#extension GL_EXT_draw_buffers: require
void main() {}
)");
if (!ok) return false;
}
return true;
}();
}
return *webgl->mIsSupportedCache_DrawBuffers;
}
// -
WebGLExtensionExplicitPresent::WebGLExtensionExplicitPresent(
WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
if (!IsSupported(webgl)) {
NS_WARNING(
"Constructing WebGLExtensionExplicitPresent but IsSupported() is "
"false!");
// This was previously an assert, but it seems like we get races against
// StaticPrefs changes/initialization?
}
}
bool WebGLExtensionExplicitPresent::IsSupported(
const WebGLContext* const webgl) {
return StaticPrefs::webgl_enable_draft_extensions();
}
// -
WebGLExtensionEXTColorBufferFloat::WebGLExtensionEXTColorBufferFloat(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
auto& fua = webgl->mFormatUsage;
auto fnUpdateUsage = [&fua](GLenum sizedFormat,
webgl::EffectiveFormat effFormat) {
auto usage = fua->EditUsage(effFormat);
usage->SetRenderable();
fua->AllowRBFormat(sizedFormat, usage);
};
#define FOO(x) fnUpdateUsage(LOCAL_GL_##x, webgl::EffectiveFormat::x)
FOO(R16F);
FOO(RG16F);
FOO(RGBA16F);
FOO(R32F);
FOO(RG32F);
FOO(RGBA32F);
FOO(R11F_G11F_B10F);
#undef FOO
}
/*static*/
bool WebGLExtensionEXTColorBufferFloat::IsSupported(const WebGLContext* webgl) {
if (!webgl->IsWebGL2()) return false;
const gl::GLContext* gl = webgl->GL();
return gl->IsSupported(gl::GLFeature::EXT_color_buffer_float);
}
// -
WebGLExtensionFBORenderMipmap::WebGLExtensionFBORenderMipmap(
WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionFBORenderMipmap::IsSupported(
const WebGLContext* const webgl) {
if (webgl->IsWebGL2()) return false;
const auto& gl = webgl->gl;
if (!gl->IsGLES()) return true;
if (gl->Version() >= 300) return true;
return gl->IsExtensionSupported(gl::GLContext::OES_fbo_render_mipmap);
}
// -
WebGLExtensionFloatBlend::WebGLExtensionFloatBlend(WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionFloatBlend::IsSupported(const WebGLContext* const webgl) {
if (!WebGLExtensionColorBufferFloat::IsSupported(webgl) &&
!WebGLExtensionEXTColorBufferFloat::IsSupported(webgl))
return false;
const auto& gl = webgl->gl;
if (!gl->IsGLES() && gl->Version() >= 300) return true;
if (gl->IsGLES() && gl->Version() >= 320) return true;
return gl->IsExtensionSupported(gl::GLContext::EXT_float_blend);
}
// -
WebGLExtensionFragDepth::WebGLExtensionFragDepth(WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionFragDepth::IsSupported(const WebGLContext* const webgl) {
if (!webgl->mIsSupportedCache_FragDepth) {
webgl->mIsSupportedCache_FragDepth = [&]() {
gl::GLContext* const gl = webgl->GL();
if (webgl->IsWebGL2()) return false;
if (!gl->IsSupported(gl::GLFeature::frag_depth)) return false;
if (gl->IsGLES() && gl->Version() >= 300) {
// ANGLE's shader translator can't translate ESSL1 exts to ESSL3. (bug
// 1524804)
// The spec (and some implementations of ES3) don't require support for
// any extensions in ESSL 100, but an implementation can choose to
// support them anyway. So let's check!
const bool ok = TestShaderCompile(gl, LOCAL_GL_FRAGMENT_SHADER, R"(
#extension GL_EXT_frag_depth: require
void main() {}
)");
if (!ok) return false;
}
return true;
}();
}
return *webgl->mIsSupportedCache_FragDepth;
}
// -
WebGLExtensionInstancedArrays::WebGLExtensionInstancedArrays(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionInstancedArrays::IsSupported(const WebGLContext* webgl) {
if (webgl->IsWebGL2()) return false;
gl::GLContext* gl = webgl->GL();
return gl->IsSupported(gl::GLFeature::draw_instanced) &&
gl->IsSupported(gl::GLFeature::instanced_arrays);
}
// -
WebGLExtensionMultiview::WebGLExtensionMultiview(WebGLContext* const webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionMultiview::IsSupported(const WebGLContext* const webgl) {
if (!webgl->IsWebGL2()) return false;
const auto& gl = webgl->gl;
return gl->IsSupported(gl::GLFeature::multiview);
}
// -
WebGLExtensionShaderTextureLod::WebGLExtensionShaderTextureLod(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
}
bool WebGLExtensionShaderTextureLod::IsSupported(const WebGLContext* webgl) {
if (!webgl->mIsSupportedCache_ShaderTextureLod) {
webgl->mIsSupportedCache_ShaderTextureLod = [&]() {
gl::GLContext* const gl = webgl->GL();
if (webgl->IsWebGL2()) return false;
if (!gl->IsSupported(gl::GLFeature::shader_texture_lod)) return false;
if (gl->IsGLES() && gl->Version() >= 300) {
// ANGLE's shader translator doesn't yet translate
// The spec (and some implementations of ES3) don't require support for
// any extensions in ESSL 100, but an implementation can choose to
// support them anyway. So let's check!
const bool ok = TestShaderCompile(gl, LOCAL_GL_FRAGMENT_SHADER, R"(
#extension GL_EXT_shader_texture_lod: require
void main() {}
)");
if (!ok) return false;
}
return true;
}();
}
return *webgl->mIsSupportedCache_ShaderTextureLod;
}
// -
WebGLExtensionSRGB::WebGLExtensionSRGB(WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(IsSupported(webgl), "Don't construct extension if unsupported.");
gl::GLContext* gl = webgl->GL();
if (!gl->IsGLES()) {
// Desktop OpenGL requires the following to be enabled in order to
// support sRGB operations on framebuffers.
gl->fEnable(LOCAL_GL_FRAMEBUFFER_SRGB_EXT);
}
auto& fua = webgl->mFormatUsage;
const auto fnAdd = [&fua, &gl_](webgl::EffectiveFormat effFormat,
GLenum format, GLenum desktopUnpackFormat) {
auto usage = fua->EditUsage(effFormat);
usage->isFilterable = true;
webgl::DriverUnpackInfo dui = {format, format, LOCAL_GL_UNSIGNED_BYTE};
const auto pi = dui.ToPacking();
if (!gl_->IsGLES()) dui.unpackFormat = desktopUnpackFormat;
fua->AddTexUnpack(usage, pi, dui);
fua->AllowUnsizedTexFormat(pi, usage);
};
fnAdd(webgl::EffectiveFormat::SRGB8, LOCAL_GL_SRGB, LOCAL_GL_RGB);
fnAdd(webgl::EffectiveFormat::SRGB8_ALPHA8, LOCAL_GL_SRGB_ALPHA,
LOCAL_GL_RGBA);
auto usage = fua->EditUsage(webgl::EffectiveFormat::SRGB8_ALPHA8);
usage->SetRenderable();
fua->AllowRBFormat(LOCAL_GL_SRGB8_ALPHA8, usage);
}
bool WebGLExtensionSRGB::IsSupported(const WebGLContext* const webgl) {
if (webgl->IsWebGL2()) return false;
return webgl->gl->IsSupported(gl::GLFeature::sRGB);
}
// -
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 = [&](webgl::EffectiveFormat effFormat) {
MOZ_ASSERT_IF(swizzle, gl->IsSupported(gl::GLFeature::texture_swizzle));
auto usage = fua->EditUsage(effFormat);
usage->textureSwizzleRGBA = swizzle;
fua->AddTexUnpack(usage, pi, dui);
fua->AllowUnsizedTexFormat(pi, usage);
};
bool useSizedFormats = true;
const bool hasSizedLegacyFormats = gl->IsCompatibilityProfile();
if (gl->IsGLES() && gl->Version() < 300) {
useSizedFormats = false;
}
////////////////
pi = {LOCAL_GL_RGBA, LOCAL_GL_FLOAT};
dui = {pi.format, pi.format, pi.type};
swizzle = nullptr;
if (useSizedFormats || gl->IsExtensionSupported(
gl::GLContext::CHROMIUM_color_buffer_float_rgba)) {
// ANGLE only exposes renderable RGBA32F via
// CHROMIUM_color_buffer_float_rgba, which uses sized formats.
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 (useSizedFormats) {
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 (useSizedFormats) {
if (hasSizedLegacyFormats) {
dui.internalFormat = LOCAL_GL_LUMINANCE32F_ARB;
} else {
dui.internalFormat = LOCAL_GL_R32F;
dui.unpackFormat = LOCAL_GL_RED;
swizzle = webgl::FormatUsageInfo::kLuminanceSwizzleRGBA;
}
}
fnAdd(webgl::EffectiveFormat::Luminance32F);
//////
pi = {LOCAL_GL_ALPHA, LOCAL_GL_FLOAT};
dui = {pi.format, pi.format, pi.type};
swizzle = nullptr;
if (useSizedFormats) {
if (hasSizedLegacyFormats) {
dui.internalFormat = LOCAL_GL_ALPHA32F_ARB;
} else {
dui.internalFormat = LOCAL_GL_R32F;
dui.unpackFormat = LOCAL_GL_RED;
swizzle = webgl::FormatUsageInfo::kAlphaSwizzleRGBA;
}
}
fnAdd(webgl::EffectiveFormat::Alpha32F);
//////
pi = {LOCAL_GL_LUMINANCE_ALPHA, LOCAL_GL_FLOAT};
dui = {pi.format, pi.format, pi.type};
swizzle = nullptr;
if (useSizedFormats) {
if (hasSizedLegacyFormats) {
dui.internalFormat = LOCAL_GL_LUMINANCE_ALPHA32F_ARB;
} else {
dui.internalFormat = LOCAL_GL_RG32F;
dui.unpackFormat = LOCAL_GL_RG;
swizzle = webgl::FormatUsageInfo::kLumAlphaSwizzleRGBA;
}
}
fnAdd(webgl::EffectiveFormat::Luminance32FAlpha32F);
}
bool WebGLExtensionTextureFloat::IsSupported(const WebGLContext* webgl) {
if (webgl->IsWebGL2()) return false;
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;
}
// -
WebGLExtensionTextureFloatLinear::WebGLExtensionTextureFloatLinear(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
auto& fua = webgl->mFormatUsage;
fua->EditUsage(webgl::EffectiveFormat::RGBA32F)->isFilterable = true;
fua->EditUsage(webgl::EffectiveFormat::RGB32F)->isFilterable = true;
if (webgl->IsWebGL2()) {
fua->EditUsage(webgl::EffectiveFormat::R32F)->isFilterable = true;
fua->EditUsage(webgl::EffectiveFormat::RG32F)->isFilterable = true;
} else {
fua->EditUsage(webgl::EffectiveFormat::Luminance32FAlpha32F)->isFilterable =
true;
fua->EditUsage(webgl::EffectiveFormat::Luminance32F)->isFilterable = true;
fua->EditUsage(webgl::EffectiveFormat::Alpha32F)->isFilterable = true;
}
}
// -
WebGLExtensionTextureHalfFloat::WebGLExtensionTextureHalfFloat(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
auto& fua = webgl->mFormatUsage;
gl::GLContext* gl = webgl->GL();
webgl::PackingInfo pi;
webgl::DriverUnpackInfo dui;
const GLint* swizzle = nullptr;
const auto fnAdd = [&](webgl::EffectiveFormat effFormat) {
MOZ_ASSERT_IF(swizzle, gl->IsSupported(gl::GLFeature::texture_swizzle));
auto usage = fua->EditUsage(effFormat);
usage->textureSwizzleRGBA = swizzle;
fua->AddTexUnpack(usage, pi, dui);
fua->AllowUnsizedTexFormat(pi, usage);
};
bool useSizedFormats = true;
const bool hasSizedLegacyFormats = gl->IsCompatibilityProfile();
if (gl->IsGLES() && gl->Version() < 300) {
useSizedFormats = false;
}
GLenum driverUnpackType = LOCAL_GL_HALF_FLOAT;
if (!gl->IsSupported(gl::GLFeature::texture_half_float)) {
MOZ_ASSERT(gl->IsExtensionSupported(gl::GLContext::OES_texture_half_float));
driverUnpackType = LOCAL_GL_HALF_FLOAT_OES;
}
////////////////
pi = {LOCAL_GL_RGBA, LOCAL_GL_HALF_FLOAT_OES};
dui = {pi.format, pi.format, driverUnpackType};
swizzle = nullptr;
if (useSizedFormats) {
dui.internalFormat = LOCAL_GL_RGBA16F;
}
fnAdd(webgl::EffectiveFormat::RGBA16F);
//////
pi = {LOCAL_GL_RGB, LOCAL_GL_HALF_FLOAT_OES};
dui = {pi.format, pi.format, driverUnpackType};
swizzle = nullptr;
if (useSizedFormats) {
dui.internalFormat = LOCAL_GL_RGB16F;
}
fnAdd(webgl::EffectiveFormat::RGB16F);
//////
pi = {LOCAL_GL_LUMINANCE, LOCAL_GL_HALF_FLOAT_OES};
dui = {pi.format, pi.format, driverUnpackType};
swizzle = nullptr;
if (useSizedFormats) {
if (hasSizedLegacyFormats) {
dui.internalFormat = LOCAL_GL_LUMINANCE16F_ARB;
} else {
dui.internalFormat = LOCAL_GL_R16F;
dui.unpackFormat = LOCAL_GL_RED;
swizzle = webgl::FormatUsageInfo::kLuminanceSwizzleRGBA;
}
}
fnAdd(webgl::EffectiveFormat::Luminance16F);
//////
pi = {LOCAL_GL_ALPHA, LOCAL_GL_HALF_FLOAT_OES};
dui = {pi.format, pi.format, driverUnpackType};
swizzle = nullptr;
if (useSizedFormats) {
if (hasSizedLegacyFormats) {
dui.internalFormat = LOCAL_GL_ALPHA16F_ARB;
} else {
dui.internalFormat = LOCAL_GL_R16F;
dui.unpackFormat = LOCAL_GL_RED;
swizzle = webgl::FormatUsageInfo::kAlphaSwizzleRGBA;
}
}
fnAdd(webgl::EffectiveFormat::Alpha16F);
//////
pi = {LOCAL_GL_LUMINANCE_ALPHA, LOCAL_GL_HALF_FLOAT_OES};
dui = {pi.format, pi.format, driverUnpackType};
swizzle = nullptr;
if (useSizedFormats) {
if (hasSizedLegacyFormats) {
dui.internalFormat = LOCAL_GL_LUMINANCE_ALPHA16F_ARB;
} else {
dui.internalFormat = LOCAL_GL_RG16F;
dui.unpackFormat = LOCAL_GL_RG;
swizzle = webgl::FormatUsageInfo::kLumAlphaSwizzleRGBA;
}
}
fnAdd(webgl::EffectiveFormat::Luminance16FAlpha16F);
}
bool WebGLExtensionTextureHalfFloat::IsSupported(const WebGLContext* webgl) {
if (webgl->IsWebGL2()) return false;
gl::GLContext* gl = webgl->GL();
if (!gl->IsSupported(gl::GLFeature::texture_half_float) &&
!gl->IsExtensionSupported(gl::GLContext::OES_texture_half_float)) {
return false;
}
const bool needsSwizzle = gl->IsCoreProfile();
const bool hasSwizzle = gl->IsSupported(gl::GLFeature::texture_swizzle);
if (needsSwizzle && !hasSwizzle) return false;
return true;
}
// -
WebGLExtensionTextureHalfFloatLinear::WebGLExtensionTextureHalfFloatLinear(
WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
MOZ_ASSERT(!webgl->IsWebGL2());
auto& fua = webgl->mFormatUsage;
fua->EditUsage(webgl::EffectiveFormat::RGBA16F)->isFilterable = true;
fua->EditUsage(webgl::EffectiveFormat::RGB16F)->isFilterable = true;
fua->EditUsage(webgl::EffectiveFormat::Luminance16FAlpha16F)->isFilterable =
true;
fua->EditUsage(webgl::EffectiveFormat::Luminance16F)->isFilterable = true;
fua->EditUsage(webgl::EffectiveFormat::Alpha16F)->isFilterable = true;
}
// -
bool WebGLExtensionTextureNorm16::IsSupported(const WebGLContext* const webgl) {
if (!StaticPrefs::webgl_enable_draft_extensions()) return false;
if (!webgl->IsWebGL2()) return false;
const auto& gl = webgl->gl;
// ANGLE's support is broken in our checkout.
if (gl->IsANGLE()) return false;
return gl->IsSupported(gl::GLFeature::texture_norm16);
}
WebGLExtensionTextureNorm16::WebGLExtensionTextureNorm16(WebGLContext* webgl)
: WebGLExtensionBase(webgl) {
if (!IsSupported(webgl)) {
NS_WARNING(
"Constructing WebGLExtensionTextureNorm16 but IsSupported() is "
"false!");
// This was previously an assert, but it seems like we get races against
// StaticPrefs changes/initialization?
}
auto& fua = *webgl->mFormatUsage;
const auto fnAdd = [&](webgl::EffectiveFormat effFormat,
const bool renderable, const webgl::PackingInfo& pi) {
auto& usage = *fua.EditUsage(effFormat);
const auto& format = *usage.format;
const auto dui =
webgl::DriverUnpackInfo{format.sizedFormat, pi.format, pi.type};
fua.AddTexUnpack(&usage, pi, dui);
fua.AllowSizedTexFormat(format.sizedFormat, &usage);
fua.AllowUnsizedTexFormat(pi, &usage);
if (renderable) {
usage.SetRenderable();
fua.AllowRBFormat(format.sizedFormat, &usage);
}
};
fnAdd(webgl::EffectiveFormat::R16, true,
{LOCAL_GL_RED, LOCAL_GL_UNSIGNED_SHORT});
fnAdd(webgl::EffectiveFormat::RG16, true,
{LOCAL_GL_RG, LOCAL_GL_UNSIGNED_SHORT});
fnAdd(webgl::EffectiveFormat::RGB16, false,
{LOCAL_GL_RGB, LOCAL_GL_UNSIGNED_SHORT});
fnAdd(webgl::EffectiveFormat::RGBA16, true,
{LOCAL_GL_RGBA, LOCAL_GL_UNSIGNED_SHORT});
fnAdd(webgl::EffectiveFormat::R16_SNORM, false,
{LOCAL_GL_RED, LOCAL_GL_SHORT});
fnAdd(webgl::EffectiveFormat::RG16_SNORM, false,
{LOCAL_GL_RG, LOCAL_GL_SHORT});
fnAdd(webgl::EffectiveFormat::RGB16_SNORM, false,
{LOCAL_GL_RGB, LOCAL_GL_SHORT});
fnAdd(webgl::EffectiveFormat::RGBA16_SNORM, false,
{LOCAL_GL_RGBA, LOCAL_GL_SHORT});
}
} // namespace mozilla