зеркало из https://github.com/mozilla/gecko-dev.git
198 строки
6.7 KiB
C++
198 строки
6.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 "WebGL2Context.h"
|
|
|
|
#include "GLContext.h"
|
|
#include "WebGLBuffer.h"
|
|
#include "WebGLContextUtils.h"
|
|
#include "WebGLFramebuffer.h"
|
|
#include "WebGLSampler.h"
|
|
#include "WebGLTransformFeedback.h"
|
|
#include "WebGLVertexArray.h"
|
|
|
|
namespace mozilla {
|
|
|
|
JS::Value WebGL2Context::GetParameter(JSContext* cx, GLenum pname,
|
|
ErrorResult& rv) {
|
|
const FuncScope funcScope(*this, "getParameter");
|
|
// The following cases are handled in WebGLContext::GetParameter():
|
|
// case LOCAL_GL_MAX_COLOR_ATTACHMENTS:
|
|
// case LOCAL_GL_MAX_DRAW_BUFFERS:
|
|
// case LOCAL_GL_DRAW_BUFFERi:
|
|
|
|
if (IsContextLost()) return JS::NullValue();
|
|
|
|
switch (pname) {
|
|
/* GLboolean */
|
|
case LOCAL_GL_RASTERIZER_DISCARD:
|
|
case LOCAL_GL_SAMPLE_ALPHA_TO_COVERAGE:
|
|
case LOCAL_GL_SAMPLE_COVERAGE: {
|
|
realGLboolean b = 0;
|
|
gl->fGetBooleanv(pname, &b);
|
|
return JS::BooleanValue(bool(b));
|
|
}
|
|
|
|
case LOCAL_GL_TRANSFORM_FEEDBACK_ACTIVE:
|
|
return JS::BooleanValue(mBoundTransformFeedback->mIsActive);
|
|
case LOCAL_GL_TRANSFORM_FEEDBACK_PAUSED:
|
|
return JS::BooleanValue(mBoundTransformFeedback->mIsPaused);
|
|
|
|
/* GLenum */
|
|
case LOCAL_GL_READ_BUFFER: {
|
|
if (!mBoundReadFramebuffer) return JS::Int32Value(mDefaultFB_ReadBuffer);
|
|
|
|
if (!mBoundReadFramebuffer->ColorReadBuffer())
|
|
return JS::Int32Value(LOCAL_GL_NONE);
|
|
|
|
return JS::Int32Value(
|
|
mBoundReadFramebuffer->ColorReadBuffer()->mAttachmentPoint);
|
|
}
|
|
|
|
case LOCAL_GL_FRAGMENT_SHADER_DERIVATIVE_HINT:
|
|
/* fall through */
|
|
|
|
/* GLint */
|
|
case LOCAL_GL_MAX_COMBINED_UNIFORM_BLOCKS:
|
|
case LOCAL_GL_MAX_ELEMENTS_INDICES:
|
|
case LOCAL_GL_MAX_ELEMENTS_VERTICES:
|
|
case LOCAL_GL_MAX_FRAGMENT_INPUT_COMPONENTS:
|
|
case LOCAL_GL_MAX_FRAGMENT_UNIFORM_BLOCKS:
|
|
case LOCAL_GL_MAX_FRAGMENT_UNIFORM_COMPONENTS:
|
|
case LOCAL_GL_MAX_PROGRAM_TEXEL_OFFSET:
|
|
case LOCAL_GL_MAX_SAMPLES:
|
|
case LOCAL_GL_MAX_TEXTURE_LOD_BIAS:
|
|
case LOCAL_GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS:
|
|
case LOCAL_GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS:
|
|
case LOCAL_GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS:
|
|
case LOCAL_GL_MAX_UNIFORM_BUFFER_BINDINGS:
|
|
case LOCAL_GL_MAX_VERTEX_OUTPUT_COMPONENTS:
|
|
case LOCAL_GL_MAX_VERTEX_UNIFORM_BLOCKS:
|
|
case LOCAL_GL_MAX_VERTEX_UNIFORM_COMPONENTS:
|
|
case LOCAL_GL_MIN_PROGRAM_TEXEL_OFFSET:
|
|
case LOCAL_GL_PACK_ROW_LENGTH:
|
|
case LOCAL_GL_PACK_SKIP_PIXELS:
|
|
case LOCAL_GL_PACK_SKIP_ROWS:
|
|
case LOCAL_GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT:
|
|
case LOCAL_GL_UNPACK_IMAGE_HEIGHT:
|
|
case LOCAL_GL_UNPACK_ROW_LENGTH: {
|
|
GLint val;
|
|
gl->fGetIntegerv(pname, &val);
|
|
return JS::Int32Value(val);
|
|
}
|
|
|
|
case LOCAL_GL_UNPACK_SKIP_IMAGES:
|
|
return JS::Int32Value(mPixelStore_UnpackSkipImages);
|
|
|
|
case LOCAL_GL_UNPACK_SKIP_PIXELS:
|
|
return JS::Int32Value(mPixelStore_UnpackSkipPixels);
|
|
|
|
case LOCAL_GL_UNPACK_SKIP_ROWS:
|
|
return JS::Int32Value(mPixelStore_UnpackSkipRows);
|
|
|
|
case LOCAL_GL_MAX_3D_TEXTURE_SIZE:
|
|
return JS::Int32Value(mGLMax3DTextureSize);
|
|
|
|
case LOCAL_GL_MAX_ARRAY_TEXTURE_LAYERS:
|
|
return JS::Int32Value(mGLMaxArrayTextureLayers);
|
|
|
|
case LOCAL_GL_MAX_VARYING_COMPONENTS: {
|
|
// On OS X Core Profile this is buggy. The spec says that the
|
|
// value is 4 * GL_MAX_VARYING_VECTORS
|
|
GLint val;
|
|
gl->fGetIntegerv(LOCAL_GL_MAX_VARYING_VECTORS, &val);
|
|
return JS::Int32Value(4 * val);
|
|
}
|
|
|
|
/* GLint64 */
|
|
case LOCAL_GL_MAX_CLIENT_WAIT_TIMEOUT_WEBGL:
|
|
return JS::NumberValue(kMaxClientWaitSyncTimeoutNS);
|
|
|
|
case LOCAL_GL_MAX_ELEMENT_INDEX:
|
|
// GL_MAX_ELEMENT_INDEX becomes available in GL 4.3 or via ES3
|
|
// compatibility
|
|
if (!gl->IsSupported(gl::GLFeature::ES3_compatibility))
|
|
return JS::NumberValue(UINT32_MAX);
|
|
|
|
/*** fall through to fGetInteger64v ***/
|
|
MOZ_FALLTHROUGH;
|
|
|
|
case LOCAL_GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS:
|
|
case LOCAL_GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS:
|
|
case LOCAL_GL_MAX_UNIFORM_BLOCK_SIZE: {
|
|
GLint64 val;
|
|
gl->fGetInteger64v(pname, &val);
|
|
return JS::DoubleValue(static_cast<double>(val));
|
|
}
|
|
|
|
/* GLuint64 */
|
|
case LOCAL_GL_MAX_SERVER_WAIT_TIMEOUT: {
|
|
GLuint64 val;
|
|
gl->fGetInteger64v(pname, (GLint64*)&val);
|
|
return JS::DoubleValue(static_cast<double>(val));
|
|
}
|
|
|
|
case LOCAL_GL_COPY_READ_BUFFER_BINDING:
|
|
return WebGLObjectAsJSValue(cx, mBoundCopyReadBuffer.get(), rv);
|
|
|
|
case LOCAL_GL_COPY_WRITE_BUFFER_BINDING:
|
|
return WebGLObjectAsJSValue(cx, mBoundCopyWriteBuffer.get(), rv);
|
|
|
|
case LOCAL_GL_PIXEL_PACK_BUFFER_BINDING:
|
|
return WebGLObjectAsJSValue(cx, mBoundPixelPackBuffer.get(), rv);
|
|
|
|
case LOCAL_GL_PIXEL_UNPACK_BUFFER_BINDING:
|
|
return WebGLObjectAsJSValue(cx, mBoundPixelUnpackBuffer.get(), rv);
|
|
|
|
case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
|
|
return WebGLObjectAsJSValue(cx, mBoundTransformFeedbackBuffer.get(), rv);
|
|
|
|
case LOCAL_GL_UNIFORM_BUFFER_BINDING:
|
|
return WebGLObjectAsJSValue(cx, mBoundUniformBuffer.get(), rv);
|
|
|
|
// DRAW_FRAMEBUFFER_BINDING is the same as FRAMEBUFFER_BINDING.
|
|
case LOCAL_GL_READ_FRAMEBUFFER_BINDING:
|
|
return WebGLObjectAsJSValue(cx, mBoundReadFramebuffer.get(), rv);
|
|
|
|
case LOCAL_GL_SAMPLER_BINDING:
|
|
return WebGLObjectAsJSValue(cx, mBoundSamplers[mActiveTexture].get(), rv);
|
|
|
|
case LOCAL_GL_TEXTURE_BINDING_2D_ARRAY:
|
|
return WebGLObjectAsJSValue(
|
|
cx, mBound2DArrayTextures[mActiveTexture].get(), rv);
|
|
|
|
case LOCAL_GL_TEXTURE_BINDING_3D:
|
|
return WebGLObjectAsJSValue(cx, mBound3DTextures[mActiveTexture].get(),
|
|
rv);
|
|
|
|
case LOCAL_GL_TRANSFORM_FEEDBACK_BINDING: {
|
|
const WebGLTransformFeedback* tf = mBoundTransformFeedback;
|
|
if (tf == mDefaultTransformFeedback) {
|
|
tf = nullptr;
|
|
}
|
|
return WebGLObjectAsJSValue(cx, tf, rv);
|
|
}
|
|
|
|
case LOCAL_GL_VERTEX_ARRAY_BINDING: {
|
|
WebGLVertexArray* vao = (mBoundVertexArray != mDefaultVertexArray)
|
|
? mBoundVertexArray.get()
|
|
: nullptr;
|
|
return WebGLObjectAsJSValue(cx, vao, rv);
|
|
}
|
|
|
|
case LOCAL_GL_VERSION:
|
|
return StringValue(cx, "WebGL 2.0", rv);
|
|
|
|
case LOCAL_GL_SHADING_LANGUAGE_VERSION:
|
|
return StringValue(cx, "WebGL GLSL ES 3.00", rv);
|
|
|
|
default:
|
|
return WebGLContext::GetParameter(cx, pname, rv);
|
|
}
|
|
}
|
|
|
|
} // namespace mozilla
|