mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-24 21:31:04 +00:00
741 lines
23 KiB
C++
741 lines
23 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGLContext.h"
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#include "GLContext.h"
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#include "GLScreenBuffer.h"
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#include "mozilla/dom/ToJSValue.h"
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#include "mozilla/Preferences.h"
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#include "nsString.h"
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#include "WebGLBuffer.h"
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#include "WebGLContextUtils.h"
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#include "WebGLFramebuffer.h"
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#include "WebGLProgram.h"
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#include "WebGLRenderbuffer.h"
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#include "WebGLShader.h"
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#include "WebGLTexture.h"
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#include "WebGLVertexArray.h"
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namespace mozilla {
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void
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WebGLContext::Disable(GLenum cap)
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{
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if (IsContextLost())
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return;
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if (!ValidateCapabilityEnum(cap, "disable"))
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return;
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realGLboolean* trackingSlot = GetStateTrackingSlot(cap);
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if (trackingSlot)
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{
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*trackingSlot = 0;
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}
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MakeContextCurrent();
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gl->fDisable(cap);
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}
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void
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WebGLContext::Enable(GLenum cap)
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{
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if (IsContextLost())
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return;
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if (!ValidateCapabilityEnum(cap, "enable"))
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return;
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realGLboolean* trackingSlot = GetStateTrackingSlot(cap);
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if (trackingSlot)
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{
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*trackingSlot = 1;
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}
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MakeContextCurrent();
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gl->fEnable(cap);
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}
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static JS::Value
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StringValue(JSContext* cx, const nsAString& str, ErrorResult& rv)
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{
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JSString* jsStr = JS_NewUCStringCopyN(cx, str.BeginReading(), str.Length());
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if (!jsStr) {
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rv.Throw(NS_ERROR_OUT_OF_MEMORY);
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return JS::NullValue();
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}
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return JS::StringValue(jsStr);
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}
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bool
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WebGLContext::GetStencilBits(GLint* const out_stencilBits)
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{
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*out_stencilBits = 0;
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if (mBoundDrawFramebuffer) {
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if (mBoundDrawFramebuffer->StencilAttachment().IsDefined() &&
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mBoundDrawFramebuffer->DepthStencilAttachment().IsDefined())
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{
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// Error, we don't know which stencil buffer's bits to use
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ErrorInvalidFramebufferOperation("getParameter: framebuffer has two stencil buffers bound");
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return false;
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}
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if (mBoundDrawFramebuffer->StencilAttachment().IsDefined() ||
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mBoundDrawFramebuffer->DepthStencilAttachment().IsDefined())
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{
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*out_stencilBits = 8;
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}
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} else if (mOptions.stencil) {
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*out_stencilBits = 8;
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}
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return true;
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}
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bool
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WebGLContext::GetChannelBits(const char* funcName, GLenum pname, GLint* const out_val)
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{
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if (mBoundDrawFramebuffer) {
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if (!mBoundDrawFramebuffer->ValidateAndInitAttachments(funcName))
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return false;
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}
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if (!mBoundDrawFramebuffer) {
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switch (pname) {
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case LOCAL_GL_RED_BITS:
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case LOCAL_GL_GREEN_BITS:
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case LOCAL_GL_BLUE_BITS:
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*out_val = 8;
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break;
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case LOCAL_GL_ALPHA_BITS:
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*out_val = (mOptions.alpha ? 8 : 0);
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break;
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case LOCAL_GL_DEPTH_BITS:
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if (mOptions.depth) {
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*out_val = gl->Screen()->DepthBits();
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} else {
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*out_val = 0;
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}
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break;
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case LOCAL_GL_STENCIL_BITS:
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*out_val = (mOptions.stencil ? 8 : 0);
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break;
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default:
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MOZ_CRASH("GFX: bad pname");
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}
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return true;
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}
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if (!gl->IsCoreProfile()) {
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gl->fGetIntegerv(pname, out_val);
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return true;
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}
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GLenum fbAttachment = 0;
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GLenum fbPName = 0;
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switch (pname) {
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case LOCAL_GL_RED_BITS:
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fbAttachment = LOCAL_GL_COLOR_ATTACHMENT0;
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fbPName = LOCAL_GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE;
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break;
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case LOCAL_GL_GREEN_BITS:
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fbAttachment = LOCAL_GL_COLOR_ATTACHMENT0;
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fbPName = LOCAL_GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE;
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break;
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case LOCAL_GL_BLUE_BITS:
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fbAttachment = LOCAL_GL_COLOR_ATTACHMENT0;
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fbPName = LOCAL_GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE;
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break;
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case LOCAL_GL_ALPHA_BITS:
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fbAttachment = LOCAL_GL_COLOR_ATTACHMENT0;
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fbPName = LOCAL_GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE;
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break;
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case LOCAL_GL_DEPTH_BITS:
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fbAttachment = LOCAL_GL_DEPTH_ATTACHMENT;
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fbPName = LOCAL_GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE;
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break;
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case LOCAL_GL_STENCIL_BITS:
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fbAttachment = LOCAL_GL_STENCIL_ATTACHMENT;
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fbPName = LOCAL_GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE;
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break;
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default:
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MOZ_CRASH("GFX: bad pname");
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}
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gl->fGetFramebufferAttachmentParameteriv(LOCAL_GL_DRAW_FRAMEBUFFER, fbAttachment,
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fbPName, out_val);
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return true;
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}
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JS::Value
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WebGLContext::GetParameter(JSContext* cx, GLenum pname, ErrorResult& rv)
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{
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const char funcName[] = "getParameter";
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if (IsContextLost())
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return JS::NullValue();
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MakeContextCurrent();
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if (MinCapabilityMode()) {
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switch(pname) {
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////////////////////////////
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// Single-value params
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// int
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case LOCAL_GL_MAX_VERTEX_ATTRIBS:
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return JS::Int32Value(MINVALUE_GL_MAX_VERTEX_ATTRIBS);
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case LOCAL_GL_MAX_FRAGMENT_UNIFORM_VECTORS:
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return JS::Int32Value(MINVALUE_GL_MAX_FRAGMENT_UNIFORM_VECTORS);
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case LOCAL_GL_MAX_VERTEX_UNIFORM_VECTORS:
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return JS::Int32Value(MINVALUE_GL_MAX_VERTEX_UNIFORM_VECTORS);
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case LOCAL_GL_MAX_VARYING_VECTORS:
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return JS::Int32Value(MINVALUE_GL_MAX_VARYING_VECTORS);
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case LOCAL_GL_MAX_TEXTURE_SIZE:
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return JS::Int32Value(MINVALUE_GL_MAX_TEXTURE_SIZE);
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case LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE:
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return JS::Int32Value(MINVALUE_GL_MAX_CUBE_MAP_TEXTURE_SIZE);
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case LOCAL_GL_MAX_TEXTURE_IMAGE_UNITS:
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return JS::Int32Value(MINVALUE_GL_MAX_TEXTURE_IMAGE_UNITS);
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case LOCAL_GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS:
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return JS::Int32Value(MINVALUE_GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS);
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case LOCAL_GL_MAX_RENDERBUFFER_SIZE:
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return JS::Int32Value(MINVALUE_GL_MAX_RENDERBUFFER_SIZE);
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default:
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// Return the real value; we're not overriding this one
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break;
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}
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}
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if (IsWebGL2() || IsExtensionEnabled(WebGLExtensionID::WEBGL_draw_buffers)) {
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if (pname == LOCAL_GL_MAX_COLOR_ATTACHMENTS) {
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return JS::Int32Value(mImplMaxColorAttachments);
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} else if (pname == LOCAL_GL_MAX_DRAW_BUFFERS) {
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return JS::Int32Value(mImplMaxDrawBuffers);
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} else if (pname >= LOCAL_GL_DRAW_BUFFER0 &&
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pname < GLenum(LOCAL_GL_DRAW_BUFFER0 + mImplMaxDrawBuffers))
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{
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GLint iv = 0;
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gl->fGetIntegerv(pname, &iv);
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if (mBoundDrawFramebuffer)
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return JS::Int32Value(iv);
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const GLint index = (pname - LOCAL_GL_DRAW_BUFFER0);
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if (iv == LOCAL_GL_COLOR_ATTACHMENT0 + index)
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return JS::Int32Value(LOCAL_GL_BACK);
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return JS::Int32Value(LOCAL_GL_NONE);
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}
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}
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if (IsWebGL2() || IsExtensionEnabled(WebGLExtensionID::OES_vertex_array_object)) {
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if (pname == LOCAL_GL_VERTEX_ARRAY_BINDING) {
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WebGLVertexArray* vao =
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(mBoundVertexArray != mDefaultVertexArray) ? mBoundVertexArray.get() : nullptr;
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return WebGLObjectAsJSValue(cx, vao, rv);
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}
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}
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if (IsWebGL2() || IsExtensionEnabled(WebGLExtensionID::EXT_disjoint_timer_query)) {
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if (pname == LOCAL_GL_TIMESTAMP_EXT) {
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GLuint64 iv = 0;
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if (HasTimestampBits()) {
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gl->fGetInteger64v(pname, (GLint64*)&iv);
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} else {
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GenerateWarning("QUERY_COUNTER_BITS_EXT for TIMESTAMP_EXT is 0.");
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}
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// TODO: JS doesn't support 64-bit integers. Be lossy and
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// cast to double (53 bits)
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return JS::NumberValue(static_cast<double>(iv));
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} else if (pname == LOCAL_GL_GPU_DISJOINT_EXT) {
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// When disjoint isn't supported, leave as false.
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realGLboolean disjoint = LOCAL_GL_FALSE;
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if (gl->IsExtensionSupported(gl::GLContext::EXT_disjoint_timer_query)) {
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gl->fGetBooleanv(pname, &disjoint);
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}
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return JS::BooleanValue(bool(disjoint));
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}
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}
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// Privileged string params exposed by WEBGL_debug_renderer_info.
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// The privilege check is done in WebGLContext::IsExtensionSupported.
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// So here we just have to check that the extension is enabled.
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if (IsExtensionEnabled(WebGLExtensionID::WEBGL_debug_renderer_info)) {
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switch (pname) {
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case UNMASKED_VENDOR_WEBGL:
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case UNMASKED_RENDERER_WEBGL:
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{
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const char* overridePref = nullptr;
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GLenum driverEnum = LOCAL_GL_NONE;
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switch (pname) {
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case UNMASKED_RENDERER_WEBGL:
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overridePref = "webgl.renderer-string-override";
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driverEnum = LOCAL_GL_RENDERER;
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break;
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case UNMASKED_VENDOR_WEBGL:
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overridePref = "webgl.vendor-string-override";
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driverEnum = LOCAL_GL_VENDOR;
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break;
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default:
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MOZ_CRASH("GFX: bad `pname`");
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}
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bool hasRetVal = false;
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nsAutoString ret;
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if (overridePref) {
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nsresult res = Preferences::GetString(overridePref, &ret);
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if (NS_SUCCEEDED(res) && ret.Length() > 0)
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hasRetVal = true;
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}
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if (!hasRetVal) {
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const char* chars = reinterpret_cast<const char*>(gl->fGetString(driverEnum));
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ret = NS_ConvertASCIItoUTF16(chars);
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hasRetVal = true;
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}
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return StringValue(cx, ret, rv);
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}
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}
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}
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if (IsWebGL2() || IsExtensionEnabled(WebGLExtensionID::OES_standard_derivatives)) {
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if (pname == LOCAL_GL_FRAGMENT_SHADER_DERIVATIVE_HINT) {
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GLint i = 0;
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gl->fGetIntegerv(pname, &i);
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return JS::Int32Value(i);
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}
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}
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if (IsExtensionEnabled(WebGLExtensionID::EXT_texture_filter_anisotropic)) {
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if (pname == LOCAL_GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT) {
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GLfloat f = 0.f;
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gl->fGetFloatv(pname, &f);
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return JS::NumberValue(f);
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}
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}
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switch (pname) {
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//
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// String params
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//
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case LOCAL_GL_VENDOR:
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case LOCAL_GL_RENDERER:
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return StringValue(cx, "Mozilla", rv);
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case LOCAL_GL_VERSION:
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return StringValue(cx, "WebGL 1.0", rv);
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case LOCAL_GL_SHADING_LANGUAGE_VERSION:
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return StringValue(cx, "WebGL GLSL ES 1.0", rv);
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////////////////////////////////
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// Single-value params
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// unsigned int
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case LOCAL_GL_CULL_FACE_MODE:
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case LOCAL_GL_FRONT_FACE:
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case LOCAL_GL_ACTIVE_TEXTURE:
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case LOCAL_GL_STENCIL_FUNC:
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case LOCAL_GL_STENCIL_FAIL:
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case LOCAL_GL_STENCIL_PASS_DEPTH_FAIL:
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case LOCAL_GL_STENCIL_PASS_DEPTH_PASS:
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case LOCAL_GL_STENCIL_BACK_FUNC:
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case LOCAL_GL_STENCIL_BACK_FAIL:
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case LOCAL_GL_STENCIL_BACK_PASS_DEPTH_FAIL:
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case LOCAL_GL_STENCIL_BACK_PASS_DEPTH_PASS:
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case LOCAL_GL_DEPTH_FUNC:
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case LOCAL_GL_BLEND_SRC_RGB:
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case LOCAL_GL_BLEND_SRC_ALPHA:
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case LOCAL_GL_BLEND_DST_RGB:
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case LOCAL_GL_BLEND_DST_ALPHA:
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case LOCAL_GL_BLEND_EQUATION_RGB:
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case LOCAL_GL_BLEND_EQUATION_ALPHA:
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case LOCAL_GL_GENERATE_MIPMAP_HINT: {
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GLint i = 0;
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gl->fGetIntegerv(pname, &i);
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return JS::NumberValue(uint32_t(i));
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}
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case LOCAL_GL_IMPLEMENTATION_COLOR_READ_TYPE: {
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const webgl::FormatUsageInfo* usage;
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uint32_t width, height;
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if (!ValidateCurFBForRead(funcName, &usage, &width, &height))
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return JS::NullValue();
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GLint i = 0;
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if (gl->IsSupported(gl::GLFeature::ES2_compatibility)) {
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gl->fGetIntegerv(pname, &i);
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} else {
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i = LOCAL_GL_UNSIGNED_BYTE;
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}
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return JS::NumberValue(uint32_t(i));
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}
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case LOCAL_GL_IMPLEMENTATION_COLOR_READ_FORMAT: {
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const webgl::FormatUsageInfo* usage;
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uint32_t width, height;
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if (!ValidateCurFBForRead(funcName, &usage, &width, &height))
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return JS::NullValue();
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GLint i = 0;
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if (gl->IsSupported(gl::GLFeature::ES2_compatibility)) {
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gl->fGetIntegerv(pname, &i);
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} else {
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i = LOCAL_GL_RGBA;
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}
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// OpenGL ES 3.0.4 p112 Table 3.2 shows that read format SRGB_ALPHA is
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// not supported. And if internal format of fbo is SRGB8_ALPHA8, then
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// IMPLEMENTATION_COLOR_READ_FORMAT is SRGB_ALPHA which is not supported
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// by ReadPixels. So, just return RGBA here.
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if (i == LOCAL_GL_SRGB_ALPHA)
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i = LOCAL_GL_RGBA;
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return JS::NumberValue(uint32_t(i));
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}
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// int
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case LOCAL_GL_STENCIL_REF:
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case LOCAL_GL_STENCIL_BACK_REF: {
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GLint stencilBits = 0;
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if (!GetStencilBits(&stencilBits))
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return JS::NullValue();
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// Assuming stencils have 8 bits
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const GLint stencilMask = (1 << stencilBits) - 1;
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GLint refValue = 0;
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gl->fGetIntegerv(pname, &refValue);
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return JS::Int32Value(refValue & stencilMask);
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}
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case LOCAL_GL_STENCIL_CLEAR_VALUE:
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case LOCAL_GL_UNPACK_ALIGNMENT:
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case LOCAL_GL_PACK_ALIGNMENT:
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case LOCAL_GL_SUBPIXEL_BITS:
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case LOCAL_GL_SAMPLE_BUFFERS:
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case LOCAL_GL_SAMPLES:
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case LOCAL_GL_MAX_VERTEX_ATTRIBS:
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case LOCAL_GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS:
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case LOCAL_GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS:
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case LOCAL_GL_MAX_TEXTURE_IMAGE_UNITS: {
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GLint i = 0;
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gl->fGetIntegerv(pname, &i);
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return JS::Int32Value(i);
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}
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case LOCAL_GL_RED_BITS:
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case LOCAL_GL_GREEN_BITS:
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case LOCAL_GL_BLUE_BITS:
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case LOCAL_GL_ALPHA_BITS:
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case LOCAL_GL_DEPTH_BITS:
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case LOCAL_GL_STENCIL_BITS: {
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// Deprecated and removed in GL Core profiles, so special handling required.
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GLint val;
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if (!GetChannelBits(funcName, pname, &val))
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return JS::NullValue();
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return JS::Int32Value(val);
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}
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case LOCAL_GL_MAX_TEXTURE_SIZE:
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return JS::Int32Value(mImplMaxTextureSize);
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case LOCAL_GL_MAX_CUBE_MAP_TEXTURE_SIZE:
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return JS::Int32Value(mImplMaxCubeMapTextureSize);
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case LOCAL_GL_MAX_RENDERBUFFER_SIZE:
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return JS::Int32Value(mImplMaxRenderbufferSize);
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case LOCAL_GL_MAX_VERTEX_UNIFORM_VECTORS:
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return JS::Int32Value(mGLMaxVertexUniformVectors);
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case LOCAL_GL_MAX_FRAGMENT_UNIFORM_VECTORS:
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return JS::Int32Value(mGLMaxFragmentUniformVectors);
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case LOCAL_GL_MAX_VARYING_VECTORS:
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return JS::Int32Value(mGLMaxVaryingVectors);
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case LOCAL_GL_COMPRESSED_TEXTURE_FORMATS: {
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uint32_t length = mCompressedTextureFormats.Length();
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JSObject* obj = dom::Uint32Array::Create(cx, this, length,
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mCompressedTextureFormats.Elements());
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if (!obj) {
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rv = NS_ERROR_OUT_OF_MEMORY;
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}
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return JS::ObjectOrNullValue(obj);
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}
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|
// unsigned int. here we may have to return very large values like 2^32-1 that can't be represented as
|
|
// javascript integer values. We just return them as doubles and javascript doesn't care.
|
|
case LOCAL_GL_STENCIL_BACK_VALUE_MASK:
|
|
return JS::DoubleValue(mStencilValueMaskBack); // pass as FP value to allow large values such as 2^32-1.
|
|
|
|
case LOCAL_GL_STENCIL_BACK_WRITEMASK:
|
|
return JS::DoubleValue(mStencilWriteMaskBack);
|
|
|
|
case LOCAL_GL_STENCIL_VALUE_MASK:
|
|
return JS::DoubleValue(mStencilValueMaskFront);
|
|
|
|
case LOCAL_GL_STENCIL_WRITEMASK:
|
|
return JS::DoubleValue(mStencilWriteMaskFront);
|
|
|
|
// float
|
|
case LOCAL_GL_DEPTH_CLEAR_VALUE:
|
|
case LOCAL_GL_LINE_WIDTH:
|
|
case LOCAL_GL_POLYGON_OFFSET_FACTOR:
|
|
case LOCAL_GL_POLYGON_OFFSET_UNITS:
|
|
case LOCAL_GL_SAMPLE_COVERAGE_VALUE: {
|
|
GLfloat f = 0.f;
|
|
gl->fGetFloatv(pname, &f);
|
|
return JS::DoubleValue(f);
|
|
}
|
|
|
|
// bool
|
|
case LOCAL_GL_BLEND:
|
|
case LOCAL_GL_DEPTH_TEST:
|
|
case LOCAL_GL_STENCIL_TEST:
|
|
case LOCAL_GL_CULL_FACE:
|
|
case LOCAL_GL_DITHER:
|
|
case LOCAL_GL_POLYGON_OFFSET_FILL:
|
|
case LOCAL_GL_SCISSOR_TEST:
|
|
case LOCAL_GL_SAMPLE_COVERAGE_INVERT:
|
|
case LOCAL_GL_DEPTH_WRITEMASK: {
|
|
realGLboolean b = 0;
|
|
gl->fGetBooleanv(pname, &b);
|
|
return JS::BooleanValue(bool(b));
|
|
}
|
|
|
|
// bool, WebGL-specific
|
|
case UNPACK_FLIP_Y_WEBGL:
|
|
return JS::BooleanValue(mPixelStore_FlipY);
|
|
case UNPACK_PREMULTIPLY_ALPHA_WEBGL:
|
|
return JS::BooleanValue(mPixelStore_PremultiplyAlpha);
|
|
|
|
// uint, WebGL-specific
|
|
case UNPACK_COLORSPACE_CONVERSION_WEBGL:
|
|
return JS::NumberValue(uint32_t(mPixelStore_ColorspaceConversion));
|
|
|
|
////////////////////////////////
|
|
// Complex values
|
|
|
|
// 2 floats
|
|
case LOCAL_GL_DEPTH_RANGE:
|
|
case LOCAL_GL_ALIASED_POINT_SIZE_RANGE:
|
|
case LOCAL_GL_ALIASED_LINE_WIDTH_RANGE: {
|
|
GLenum driverPName = pname;
|
|
if (gl->IsCoreProfile() &&
|
|
driverPName == LOCAL_GL_ALIASED_POINT_SIZE_RANGE)
|
|
{
|
|
driverPName = LOCAL_GL_POINT_SIZE_RANGE;
|
|
}
|
|
|
|
GLfloat fv[2] = { 0 };
|
|
gl->fGetFloatv(driverPName, fv);
|
|
JSObject* obj = dom::Float32Array::Create(cx, this, 2, fv);
|
|
if (!obj) {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return JS::ObjectOrNullValue(obj);
|
|
}
|
|
|
|
// 4 floats
|
|
case LOCAL_GL_COLOR_CLEAR_VALUE:
|
|
case LOCAL_GL_BLEND_COLOR: {
|
|
GLfloat fv[4] = { 0 };
|
|
gl->fGetFloatv(pname, fv);
|
|
JSObject* obj = dom::Float32Array::Create(cx, this, 4, fv);
|
|
if (!obj) {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return JS::ObjectOrNullValue(obj);
|
|
}
|
|
|
|
// 2 ints
|
|
case LOCAL_GL_MAX_VIEWPORT_DIMS: {
|
|
GLint iv[2] = { 0 };
|
|
gl->fGetIntegerv(pname, iv);
|
|
JSObject* obj = dom::Int32Array::Create(cx, this, 2, iv);
|
|
if (!obj) {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return JS::ObjectOrNullValue(obj);
|
|
}
|
|
|
|
// 4 ints
|
|
case LOCAL_GL_SCISSOR_BOX:
|
|
case LOCAL_GL_VIEWPORT: {
|
|
GLint iv[4] = { 0 };
|
|
gl->fGetIntegerv(pname, iv);
|
|
JSObject* obj = dom::Int32Array::Create(cx, this, 4, iv);
|
|
if (!obj) {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return JS::ObjectOrNullValue(obj);
|
|
}
|
|
|
|
// 4 bools
|
|
case LOCAL_GL_COLOR_WRITEMASK: {
|
|
realGLboolean gl_bv[4] = { 0 };
|
|
gl->fGetBooleanv(pname, gl_bv);
|
|
bool vals[4] = { bool(gl_bv[0]), bool(gl_bv[1]),
|
|
bool(gl_bv[2]), bool(gl_bv[3]) };
|
|
JS::Rooted<JS::Value> arr(cx);
|
|
if (!dom::ToJSValue(cx, vals, &arr)) {
|
|
rv = NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return arr;
|
|
}
|
|
|
|
case LOCAL_GL_ARRAY_BUFFER_BINDING: {
|
|
return WebGLObjectAsJSValue(cx, mBoundArrayBuffer.get(), rv);
|
|
}
|
|
|
|
case LOCAL_GL_ELEMENT_ARRAY_BUFFER_BINDING: {
|
|
return WebGLObjectAsJSValue(cx, mBoundVertexArray->mElementArrayBuffer.get(), rv);
|
|
}
|
|
|
|
case LOCAL_GL_RENDERBUFFER_BINDING: {
|
|
return WebGLObjectAsJSValue(cx, mBoundRenderbuffer.get(), rv);
|
|
}
|
|
|
|
// DRAW_FRAMEBUFFER_BINDING is the same as FRAMEBUFFER_BINDING.
|
|
case LOCAL_GL_FRAMEBUFFER_BINDING: {
|
|
return WebGLObjectAsJSValue(cx, mBoundDrawFramebuffer.get(), rv);
|
|
}
|
|
|
|
case LOCAL_GL_CURRENT_PROGRAM: {
|
|
return WebGLObjectAsJSValue(cx, mCurrentProgram.get(), rv);
|
|
}
|
|
|
|
case LOCAL_GL_TEXTURE_BINDING_2D: {
|
|
return WebGLObjectAsJSValue(cx, mBound2DTextures[mActiveTexture].get(), rv);
|
|
}
|
|
|
|
case LOCAL_GL_TEXTURE_BINDING_CUBE_MAP: {
|
|
return WebGLObjectAsJSValue(cx, mBoundCubeMapTextures[mActiveTexture].get(), rv);
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ErrorInvalidEnumInfo("getParameter: parameter", pname);
|
|
return JS::NullValue();
|
|
}
|
|
|
|
void
|
|
WebGLContext::GetParameterIndexed(JSContext* cx, GLenum pname, GLuint index,
|
|
JS::MutableHandle<JS::Value> retval)
|
|
{
|
|
if (IsContextLost()) {
|
|
retval.setNull();
|
|
return;
|
|
}
|
|
|
|
MakeContextCurrent();
|
|
|
|
switch (pname) {
|
|
case LOCAL_GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
|
|
{
|
|
if (index >= mGLMaxTransformFeedbackSeparateAttribs) {
|
|
ErrorInvalidValue("getParameterIndexed: index should be less than MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS", index);
|
|
retval.setNull();
|
|
return;
|
|
}
|
|
retval.setNull(); // See bug 903594
|
|
return;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ErrorInvalidEnumInfo("getParameterIndexed: parameter", pname);
|
|
retval.setNull();
|
|
}
|
|
|
|
bool
|
|
WebGLContext::IsEnabled(GLenum cap)
|
|
{
|
|
if (IsContextLost())
|
|
return false;
|
|
|
|
if (!ValidateCapabilityEnum(cap, "isEnabled"))
|
|
return false;
|
|
|
|
MakeContextCurrent();
|
|
return gl->fIsEnabled(cap);
|
|
}
|
|
|
|
bool
|
|
WebGLContext::ValidateCapabilityEnum(GLenum cap, const char* info)
|
|
{
|
|
switch (cap) {
|
|
case LOCAL_GL_BLEND:
|
|
case LOCAL_GL_CULL_FACE:
|
|
case LOCAL_GL_DEPTH_TEST:
|
|
case LOCAL_GL_DITHER:
|
|
case LOCAL_GL_POLYGON_OFFSET_FILL:
|
|
case LOCAL_GL_SAMPLE_ALPHA_TO_COVERAGE:
|
|
case LOCAL_GL_SAMPLE_COVERAGE:
|
|
case LOCAL_GL_SCISSOR_TEST:
|
|
case LOCAL_GL_STENCIL_TEST:
|
|
return true;
|
|
case LOCAL_GL_RASTERIZER_DISCARD:
|
|
return IsWebGL2();
|
|
default:
|
|
ErrorInvalidEnumInfo(info, cap);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
realGLboolean*
|
|
WebGLContext::GetStateTrackingSlot(GLenum cap)
|
|
{
|
|
switch (cap) {
|
|
case LOCAL_GL_DEPTH_TEST:
|
|
return &mDepthTestEnabled;
|
|
case LOCAL_GL_DITHER:
|
|
return &mDitherEnabled;
|
|
case LOCAL_GL_RASTERIZER_DISCARD:
|
|
return &mRasterizerDiscardEnabled;
|
|
case LOCAL_GL_SCISSOR_TEST:
|
|
return &mScissorTestEnabled;
|
|
case LOCAL_GL_STENCIL_TEST:
|
|
return &mStencilTestEnabled;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
} // namespace mozilla
|