mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
606 lines
18 KiB
C++
606 lines
18 KiB
C++
/* -*- Mode: C++; tab-width: 20; 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 <stdarg.h>
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#include "GLContext.h"
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#include "jsapi.h"
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#include "mozilla/Preferences.h"
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#include "nsCxPusher.h"
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#include "nsIDOMDataContainerEvent.h"
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#include "nsIDOMEvent.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIVariant.h"
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#include "nsServiceManagerUtils.h"
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#include "prprf.h"
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#include "WebGLBuffer.h"
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#include "WebGLExtensions.h"
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#include "WebGLFramebuffer.h"
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#include "WebGLProgram.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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using namespace gl;
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bool
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IsGLDepthFormat(GLenum webGLFormat)
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{
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return (webGLFormat == LOCAL_GL_DEPTH_COMPONENT ||
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webGLFormat == LOCAL_GL_DEPTH_COMPONENT16 ||
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webGLFormat == LOCAL_GL_DEPTH_COMPONENT32);
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}
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bool
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IsGLDepthStencilFormat(GLenum webGLFormat)
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{
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return (webGLFormat == LOCAL_GL_DEPTH_STENCIL ||
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webGLFormat == LOCAL_GL_DEPTH24_STENCIL8);
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}
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bool
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FormatHasAlpha(GLenum webGLFormat)
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{
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return webGLFormat == LOCAL_GL_RGBA ||
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webGLFormat == LOCAL_GL_LUMINANCE_ALPHA ||
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webGLFormat == LOCAL_GL_ALPHA ||
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webGLFormat == LOCAL_GL_RGBA4 ||
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webGLFormat == LOCAL_GL_RGB5_A1 ||
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webGLFormat == LOCAL_GL_SRGB_ALPHA;
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}
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/**
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* Convert WebGL/ES format and type into GL format and GL internal
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* format valid for underlying driver.
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*/
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void
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DriverFormatsFromFormatAndType(GLContext* gl, GLenum webGLFormat, GLenum webGLType,
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GLenum* out_driverInternalFormat, GLenum* out_driverFormat)
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{
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MOZ_ASSERT(out_driverInternalFormat, "out_driverInternalFormat can't be nullptr.");
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MOZ_ASSERT(out_driverFormat, "out_driverFormat can't be nullptr.");
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if (!out_driverInternalFormat || !out_driverFormat)
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return;
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// ES2 requires that format == internalformat; floating-point is
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// indicated purely by the type that's loaded. For desktop GL, we
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// have to specify a floating point internal format.
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if (gl->IsGLES()) {
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*out_driverInternalFormat = webGLFormat;
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*out_driverFormat = webGLFormat;
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return;
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}
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GLenum format = webGLFormat;
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GLenum internalFormat = LOCAL_GL_NONE;
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if (format == LOCAL_GL_DEPTH_COMPONENT) {
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if (webGLType == LOCAL_GL_UNSIGNED_SHORT)
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internalFormat = LOCAL_GL_DEPTH_COMPONENT16;
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else if (webGLType == LOCAL_GL_UNSIGNED_INT)
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internalFormat = LOCAL_GL_DEPTH_COMPONENT32;
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} else if (format == LOCAL_GL_DEPTH_STENCIL) {
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if (webGLType == LOCAL_GL_UNSIGNED_INT_24_8_EXT)
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internalFormat = LOCAL_GL_DEPTH24_STENCIL8;
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} else {
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switch (webGLType) {
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case LOCAL_GL_UNSIGNED_BYTE:
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case LOCAL_GL_UNSIGNED_SHORT_4_4_4_4:
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case LOCAL_GL_UNSIGNED_SHORT_5_5_5_1:
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case LOCAL_GL_UNSIGNED_SHORT_5_6_5:
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internalFormat = format;
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break;
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case LOCAL_GL_FLOAT:
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switch (format) {
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case LOCAL_GL_RGBA:
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internalFormat = LOCAL_GL_RGBA32F;
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break;
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case LOCAL_GL_RGB:
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internalFormat = LOCAL_GL_RGB32F;
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break;
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case LOCAL_GL_ALPHA:
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internalFormat = LOCAL_GL_ALPHA32F_ARB;
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break;
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case LOCAL_GL_LUMINANCE:
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internalFormat = LOCAL_GL_LUMINANCE32F_ARB;
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break;
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case LOCAL_GL_LUMINANCE_ALPHA:
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internalFormat = LOCAL_GL_LUMINANCE_ALPHA32F_ARB;
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break;
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}
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break;
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case LOCAL_GL_HALF_FLOAT_OES:
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switch (format) {
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case LOCAL_GL_RGBA:
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internalFormat = LOCAL_GL_RGBA16F;
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break;
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case LOCAL_GL_RGB:
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internalFormat = LOCAL_GL_RGB16F;
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break;
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case LOCAL_GL_ALPHA:
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internalFormat = LOCAL_GL_ALPHA16F_ARB;
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break;
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case LOCAL_GL_LUMINANCE:
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internalFormat = LOCAL_GL_LUMINANCE16F_ARB;
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break;
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case LOCAL_GL_LUMINANCE_ALPHA:
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internalFormat = LOCAL_GL_LUMINANCE_ALPHA16F_ARB;
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break;
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}
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break;
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default:
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break;
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}
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// Handle ES2 and GL differences when supporting sRGB internal formats. GL ES
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// requires that format == internalformat, but GL will fail in this case.
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// GL requires:
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// format -> internalformat
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// GL_RGB GL_SRGB_EXT
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// GL_RGBA GL_SRGB_ALPHA_EXT
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switch (format) {
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case LOCAL_GL_SRGB:
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internalFormat = format;
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format = LOCAL_GL_RGB;
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break;
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case LOCAL_GL_SRGB_ALPHA:
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internalFormat = format;
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format = LOCAL_GL_RGBA;
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break;
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}
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}
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MOZ_ASSERT(format != LOCAL_GL_NONE && internalFormat != LOCAL_GL_NONE,
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"Coding mistake -- bad format/type passed?");
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*out_driverInternalFormat = internalFormat;
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*out_driverFormat = format;
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}
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GLenum
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DriverTypeFromType(GLContext* gl, GLenum webGLType)
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{
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if (gl->IsGLES())
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return webGLType;
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// convert type for half float if not on GLES2
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GLenum type = webGLType;
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if (type == LOCAL_GL_HALF_FLOAT_OES) {
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if (gl->IsSupported(gl::GLFeature::texture_half_float)) {
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return LOCAL_GL_HALF_FLOAT;
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} else {
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MOZ_ASSERT(gl->IsExtensionSupported(gl::GLContext::OES_texture_half_float));
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}
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}
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return webGLType;
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}
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void
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WebGLContext::GenerateWarning(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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GenerateWarning(fmt, ap);
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va_end(ap);
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}
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void
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WebGLContext::GenerateWarning(const char *fmt, va_list ap)
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{
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if (!ShouldGenerateWarnings())
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return;
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mAlreadyGeneratedWarnings++;
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char buf[1024];
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PR_vsnprintf(buf, 1024, fmt, ap);
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// no need to print to stderr, as JS_ReportWarning takes care of this for us.
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AutoJSContext cx;
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JS_ReportWarning(cx, "WebGL: %s", buf);
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if (!ShouldGenerateWarnings()) {
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JS_ReportWarning(cx,
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"WebGL: No further warnings will be reported for this WebGL context "
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"(already reported %d warnings)", mAlreadyGeneratedWarnings);
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}
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}
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bool
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WebGLContext::ShouldGenerateWarnings() const
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{
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if (mMaxWarnings == -1) {
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return true;
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}
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return mAlreadyGeneratedWarnings < mMaxWarnings;
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}
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CheckedUint32
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WebGLContext::GetImageSize(GLsizei height,
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GLsizei width,
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uint32_t pixelSize,
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uint32_t packOrUnpackAlignment)
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{
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CheckedUint32 checked_plainRowSize = CheckedUint32(width) * pixelSize;
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// alignedRowSize = row size rounded up to next multiple of packAlignment
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CheckedUint32 checked_alignedRowSize = RoundedToNextMultipleOf(checked_plainRowSize, packOrUnpackAlignment);
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// if height is 0, we don't need any memory to store this; without this check, we'll get an overflow
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CheckedUint32 checked_neededByteLength
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= height <= 0 ? 0 : (height-1) * checked_alignedRowSize + checked_plainRowSize;
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return checked_neededByteLength;
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}
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void
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WebGLContext::SynthesizeGLError(GLenum err)
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{
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/* ES2 section 2.5 "GL Errors" states that implementations can have
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* multiple 'flags', as errors might be caught in different parts of
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* a distributed implementation.
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* We're signing up as a distributed implementation here, with
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* separate flags for WebGL and the underlying GLContext.
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*/
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if (!mWebGLError)
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mWebGLError = err;
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}
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void
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WebGLContext::SynthesizeGLError(GLenum err, const char *fmt, ...)
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{
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va_list va;
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va_start(va, fmt);
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GenerateWarning(fmt, va);
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va_end(va);
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return SynthesizeGLError(err);
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}
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void
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WebGLContext::ErrorInvalidEnum(const char *fmt, ...)
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{
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va_list va;
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va_start(va, fmt);
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GenerateWarning(fmt, va);
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va_end(va);
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return SynthesizeGLError(LOCAL_GL_INVALID_ENUM);
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}
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void
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WebGLContext::ErrorInvalidEnumInfo(const char *info, GLenum enumvalue)
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{
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return ErrorInvalidEnum("%s: invalid enum value 0x%x", info, enumvalue);
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}
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void
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WebGLContext::ErrorInvalidOperation(const char *fmt, ...)
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{
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va_list va;
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va_start(va, fmt);
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GenerateWarning(fmt, va);
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va_end(va);
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return SynthesizeGLError(LOCAL_GL_INVALID_OPERATION);
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}
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void
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WebGLContext::ErrorInvalidValue(const char *fmt, ...)
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{
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va_list va;
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va_start(va, fmt);
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GenerateWarning(fmt, va);
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va_end(va);
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return SynthesizeGLError(LOCAL_GL_INVALID_VALUE);
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}
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void
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WebGLContext::ErrorInvalidFramebufferOperation(const char *fmt, ...)
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{
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va_list va;
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va_start(va, fmt);
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GenerateWarning(fmt, va);
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va_end(va);
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return SynthesizeGLError(LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION);
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}
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void
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WebGLContext::ErrorOutOfMemory(const char *fmt, ...)
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{
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va_list va;
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va_start(va, fmt);
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GenerateWarning(fmt, va);
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va_end(va);
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return SynthesizeGLError(LOCAL_GL_OUT_OF_MEMORY);
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}
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const char *
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WebGLContext::ErrorName(GLenum error)
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{
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switch(error) {
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case LOCAL_GL_INVALID_ENUM:
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return "INVALID_ENUM";
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case LOCAL_GL_INVALID_OPERATION:
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return "INVALID_OPERATION";
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case LOCAL_GL_INVALID_VALUE:
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return "INVALID_VALUE";
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case LOCAL_GL_OUT_OF_MEMORY:
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return "OUT_OF_MEMORY";
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case LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION:
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return "INVALID_FRAMEBUFFER_OPERATION";
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case LOCAL_GL_NO_ERROR:
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return "NO_ERROR";
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default:
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MOZ_ASSERT(false);
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return "[unknown WebGL error!]";
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}
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}
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const char*
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WebGLContext::EnumName(GLenum glenum)
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{
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switch (glenum) {
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#define XX(x) case LOCAL_GL_##x: return #x
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XX(ALPHA);
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XX(ATC_RGB);
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XX(ATC_RGBA_EXPLICIT_ALPHA);
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XX(ATC_RGBA_INTERPOLATED_ALPHA);
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XX(COMPRESSED_RGBA_PVRTC_2BPPV1);
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XX(COMPRESSED_RGBA_PVRTC_4BPPV1);
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XX(COMPRESSED_RGBA_S3TC_DXT1_EXT);
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XX(COMPRESSED_RGBA_S3TC_DXT3_EXT);
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XX(COMPRESSED_RGBA_S3TC_DXT5_EXT);
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XX(COMPRESSED_RGB_PVRTC_2BPPV1);
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XX(COMPRESSED_RGB_PVRTC_4BPPV1);
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XX(COMPRESSED_RGB_S3TC_DXT1_EXT);
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XX(DEPTH_COMPONENT);
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XX(DEPTH_COMPONENT16);
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XX(DEPTH_COMPONENT32);
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XX(DEPTH_STENCIL);
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XX(DEPTH24_STENCIL8);
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XX(ETC1_RGB8_OES);
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XX(FLOAT);
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XX(HALF_FLOAT);
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XX(LUMINANCE);
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XX(LUMINANCE_ALPHA);
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XX(RGB);
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XX(RGB16F);
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XX(RGB32F);
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XX(RGBA);
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XX(RGBA16F);
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XX(RGBA32F);
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XX(SRGB);
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XX(SRGB_ALPHA);
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XX(TEXTURE_2D);
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XX(TEXTURE_3D);
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XX(TEXTURE_CUBE_MAP);
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XX(TEXTURE_CUBE_MAP_NEGATIVE_X);
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XX(TEXTURE_CUBE_MAP_NEGATIVE_Y);
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XX(TEXTURE_CUBE_MAP_NEGATIVE_Z);
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XX(TEXTURE_CUBE_MAP_POSITIVE_X);
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XX(TEXTURE_CUBE_MAP_POSITIVE_Y);
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XX(TEXTURE_CUBE_MAP_POSITIVE_Z);
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XX(UNSIGNED_BYTE);
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XX(UNSIGNED_INT);
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XX(UNSIGNED_INT_24_8);
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XX(UNSIGNED_SHORT);
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XX(UNSIGNED_SHORT_4_4_4_4);
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XX(UNSIGNED_SHORT_5_5_5_1);
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XX(UNSIGNED_SHORT_5_6_5);
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#undef XX
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}
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return "[Unknown enum name]";
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}
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bool
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WebGLContext::IsTextureFormatCompressed(GLenum format)
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{
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switch (format) {
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case LOCAL_GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
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case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
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case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
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case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
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case LOCAL_GL_ATC_RGB:
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case LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA:
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case LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA:
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case LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1:
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case LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1:
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case LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1:
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case LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1:
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case LOCAL_GL_ETC1_RGB8_OES:
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return true;
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default:
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return false;
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}
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}
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GLenum
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WebGLContext::GetAndFlushUnderlyingGLErrors()
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{
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// Get and clear GL error in ALL cases.
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GLenum error = gl->GetAndClearError();
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// Only store in mUnderlyingGLError if is hasn't already recorded an
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// error.
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if (!mUnderlyingGLError)
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mUnderlyingGLError = error;
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return error;
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}
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#ifdef DEBUG
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// For NaNs, etc.
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static bool
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IsCacheCorrect(float cached, float actual)
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{
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if (IsNaN(cached)) {
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// GL is allowed to do anything it wants for NaNs, so if we're shadowing
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// a NaN, then whatever `actual` is might be correct.
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return true;
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}
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return cached == actual;
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}
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void
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AssertUintParamCorrect(gl::GLContext* gl, GLenum pname, GLuint shadow)
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{
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GLuint val = 0;
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gl->GetUIntegerv(pname, &val);
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if (val != shadow) {
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printf_stderr("Failed 0x%04x shadow: Cached 0x%x/%u, should be 0x%x/%u.\n",
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pname, shadow, shadow, val, val);
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MOZ_ASSERT(false, "Bad cached value.");
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}
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}
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#else
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void
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AssertUintParamCorrect(gl::GLContext*, GLenum, GLuint)
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{
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}
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#endif
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void
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WebGLContext::AssertCachedBindings()
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{
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#ifdef DEBUG
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MakeContextCurrent();
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GetAndFlushUnderlyingGLErrors();
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if (IsExtensionEnabled(WebGLExtensionID::OES_vertex_array_object)) {
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GLuint bound = mBoundVertexArray ? mBoundVertexArray->GLName() : 0;
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AssertUintParamCorrect(gl, LOCAL_GL_VERTEX_ARRAY_BINDING, bound);
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}
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// Bound object state
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GLuint bound = mBoundFramebuffer ? mBoundFramebuffer->GLName() : 0;
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AssertUintParamCorrect(gl, LOCAL_GL_FRAMEBUFFER_BINDING, bound);
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bound = mCurrentProgram ? mCurrentProgram->GLName() : 0;
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AssertUintParamCorrect(gl, LOCAL_GL_CURRENT_PROGRAM, bound);
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// Textures
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GLenum activeTexture = mActiveTexture + LOCAL_GL_TEXTURE0;
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AssertUintParamCorrect(gl, LOCAL_GL_ACTIVE_TEXTURE, activeTexture);
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WebGLTexture* curTex = activeBoundTextureForTarget(LOCAL_GL_TEXTURE_2D);
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bound = curTex ? curTex->GLName() : 0;
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AssertUintParamCorrect(gl, LOCAL_GL_TEXTURE_BINDING_2D, bound);
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curTex = activeBoundTextureForTarget(LOCAL_GL_TEXTURE_CUBE_MAP);
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bound = curTex ? curTex->GLName() : 0;
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AssertUintParamCorrect(gl, LOCAL_GL_TEXTURE_BINDING_CUBE_MAP, bound);
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// Buffers
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bound = mBoundArrayBuffer ? mBoundArrayBuffer->GLName() : 0;
|
|
AssertUintParamCorrect(gl, LOCAL_GL_ARRAY_BUFFER_BINDING, bound);
|
|
|
|
MOZ_ASSERT(mBoundVertexArray);
|
|
WebGLBuffer* curBuff = mBoundVertexArray->mElementArrayBuffer;
|
|
bound = curBuff ? curBuff->GLName() : 0;
|
|
AssertUintParamCorrect(gl, LOCAL_GL_ELEMENT_ARRAY_BUFFER_BINDING, bound);
|
|
|
|
MOZ_ASSERT(!GetAndFlushUnderlyingGLErrors());
|
|
#endif
|
|
}
|
|
|
|
void
|
|
WebGLContext::AssertCachedState()
|
|
{
|
|
#ifdef DEBUG
|
|
MakeContextCurrent();
|
|
|
|
GetAndFlushUnderlyingGLErrors();
|
|
|
|
// extensions
|
|
if (IsExtensionEnabled(WebGLExtensionID::WEBGL_draw_buffers)) {
|
|
AssertUintParamCorrect(gl, LOCAL_GL_MAX_COLOR_ATTACHMENTS, mGLMaxColorAttachments);
|
|
AssertUintParamCorrect(gl, LOCAL_GL_MAX_DRAW_BUFFERS, mGLMaxDrawBuffers);
|
|
}
|
|
|
|
// Draw state
|
|
MOZ_ASSERT(gl->fIsEnabled(LOCAL_GL_SCISSOR_TEST) == mScissorTestEnabled);
|
|
MOZ_ASSERT(gl->fIsEnabled(LOCAL_GL_DITHER) == mDitherEnabled);
|
|
MOZ_ASSERT_IF(IsWebGL2(),
|
|
gl->fIsEnabled(LOCAL_GL_RASTERIZER_DISCARD) == mRasterizerDiscardEnabled);
|
|
|
|
|
|
realGLboolean colorWriteMask[4] = {0, 0, 0, 0};
|
|
gl->fGetBooleanv(LOCAL_GL_COLOR_WRITEMASK, colorWriteMask);
|
|
MOZ_ASSERT(colorWriteMask[0] == mColorWriteMask[0] &&
|
|
colorWriteMask[1] == mColorWriteMask[1] &&
|
|
colorWriteMask[2] == mColorWriteMask[2] &&
|
|
colorWriteMask[3] == mColorWriteMask[3]);
|
|
|
|
GLfloat colorClearValue[4] = {0.0f, 0.0f, 0.0f, 0.0f};
|
|
gl->fGetFloatv(LOCAL_GL_COLOR_CLEAR_VALUE, colorClearValue);
|
|
MOZ_ASSERT(IsCacheCorrect(mColorClearValue[0], colorClearValue[0]) &&
|
|
IsCacheCorrect(mColorClearValue[1], colorClearValue[1]) &&
|
|
IsCacheCorrect(mColorClearValue[2], colorClearValue[2]) &&
|
|
IsCacheCorrect(mColorClearValue[3], colorClearValue[3]));
|
|
|
|
realGLboolean depthWriteMask = 0;
|
|
gl->fGetBooleanv(LOCAL_GL_DEPTH_WRITEMASK, &depthWriteMask);
|
|
MOZ_ASSERT(depthWriteMask == mDepthWriteMask);
|
|
|
|
GLfloat depthClearValue = 0.0f;
|
|
gl->fGetFloatv(LOCAL_GL_DEPTH_CLEAR_VALUE, &depthClearValue);
|
|
MOZ_ASSERT(IsCacheCorrect(mDepthClearValue, depthClearValue));
|
|
|
|
AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_CLEAR_VALUE, mStencilClearValue);
|
|
|
|
AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_REF, mStencilRefFront);
|
|
AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_REF, mStencilRefBack);
|
|
|
|
AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_VALUE_MASK, mStencilValueMaskFront);
|
|
AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_VALUE_MASK, mStencilValueMaskBack);
|
|
|
|
AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_WRITEMASK, mStencilWriteMaskFront);
|
|
AssertUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_WRITEMASK, mStencilWriteMaskBack);
|
|
|
|
// Viewport
|
|
GLint int4[4] = {0, 0, 0, 0};
|
|
gl->fGetIntegerv(LOCAL_GL_VIEWPORT, int4);
|
|
MOZ_ASSERT(int4[0] == mViewportX &&
|
|
int4[1] == mViewportY &&
|
|
int4[2] == mViewportWidth &&
|
|
int4[3] == mViewportHeight);
|
|
|
|
AssertUintParamCorrect(gl, LOCAL_GL_PACK_ALIGNMENT, mPixelStorePackAlignment);
|
|
AssertUintParamCorrect(gl, LOCAL_GL_UNPACK_ALIGNMENT, mPixelStoreUnpackAlignment);
|
|
|
|
MOZ_ASSERT(!GetAndFlushUnderlyingGLErrors());
|
|
#endif
|
|
}
|
|
|
|
} // namespace mozilla
|