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gecko/dom/canvas/WebGLContextUtils.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "WebGLContext.h"
#include <stdarg.h>
#include "GLContext.h"
#include "jsapi.h"
#include "mozilla/Preferences.h"
#include "nsIDOMDataContainerEvent.h"
#include "nsIDOMEvent.h"
#include "nsIScriptSecurityManager.h"
#include "nsIVariant.h"
#include "nsServiceManagerUtils.h"
#include "prprf.h"
#include "WebGLBuffer.h"
#include "WebGLExtensions.h"
#include "WebGLFramebuffer.h"
#include "WebGLProgram.h"
#include "WebGLTexture.h"
#include "WebGLVertexArray.h"
#include "WebGLContextUtils.h"
#include "mozilla/dom/ScriptSettings.h"
namespace mozilla {
using namespace gl;
bool
IsGLDepthFormat(TexInternalFormat internalformat)
{
TexInternalFormat unsizedformat = UnsizedInternalFormatFromInternalFormat(internalformat);
return unsizedformat == LOCAL_GL_DEPTH_COMPONENT;
}
bool
IsGLDepthStencilFormat(TexInternalFormat internalformat)
{
TexInternalFormat unsizedformat = UnsizedInternalFormatFromInternalFormat(internalformat);
return unsizedformat == LOCAL_GL_DEPTH_STENCIL;
}
bool
FormatHasAlpha(TexInternalFormat internalformat)
{
TexInternalFormat unsizedformat = UnsizedInternalFormatFromInternalFormat(internalformat);
return unsizedformat == LOCAL_GL_RGBA ||
unsizedformat == LOCAL_GL_LUMINANCE_ALPHA ||
unsizedformat == LOCAL_GL_ALPHA ||
unsizedformat == LOCAL_GL_SRGB_ALPHA ||
unsizedformat == LOCAL_GL_RGBA_INTEGER;
}
TexTarget
TexImageTargetToTexTarget(TexImageTarget texImageTarget)
{
switch (texImageTarget.get()) {
case LOCAL_GL_TEXTURE_2D:
case LOCAL_GL_TEXTURE_3D:
return texImageTarget.get();
case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return LOCAL_GL_TEXTURE_CUBE_MAP;
default:
MOZ_ASSERT(false, "Bad texture target");
// Should be caught by the constructor for TexTarget
return LOCAL_GL_NONE;
}
}
GLComponents::GLComponents(TexInternalFormat internalformat)
{
TexInternalFormat unsizedformat = UnsizedInternalFormatFromInternalFormat(internalformat);
mComponents = 0;
switch (unsizedformat.get()) {
case LOCAL_GL_RGBA:
case LOCAL_GL_RGBA4:
case LOCAL_GL_RGBA8:
case LOCAL_GL_RGB5_A1:
// Luminance + Alpha can be converted
// to and from RGBA
case LOCAL_GL_LUMINANCE_ALPHA:
mComponents |= Components::Alpha;
// Drops through
case LOCAL_GL_RGB:
case LOCAL_GL_RGB565:
// Luminance can be converted to and from RGB
case LOCAL_GL_LUMINANCE:
mComponents |= Components::Red | Components::Green | Components::Blue;
break;
case LOCAL_GL_ALPHA:
mComponents |= Components::Alpha;
break;
case LOCAL_GL_DEPTH_COMPONENT:
mComponents |= Components::Depth;
break;
case LOCAL_GL_DEPTH_STENCIL:
mComponents |= Components::Stencil;
break;
default:
MOZ_ASSERT(false, "Unhandled case - GLComponents");
break;
}
}
bool
GLComponents::IsSubsetOf(const GLComponents& other) const
{
return (mComponents | other.mComponents) == other.mComponents;
}
TexType
TypeFromInternalFormat(TexInternalFormat internalformat)
{
#define HANDLE_WEBGL_INTERNAL_FORMAT(table_effectiveinternalformat, table_internalformat, table_type) \
if (internalformat == table_effectiveinternalformat) { \
return table_type; \
}
#include "WebGLInternalFormatsTable.h"
// if we're here, then internalformat is not an effective internalformat i.e. is an unsized internalformat.
return LOCAL_GL_NONE; // no size, no type
}
TexInternalFormat
UnsizedInternalFormatFromInternalFormat(TexInternalFormat internalformat)
{
#define HANDLE_WEBGL_INTERNAL_FORMAT(table_effectiveinternalformat, table_internalformat, table_type) \
if (internalformat == table_effectiveinternalformat) { \
return table_internalformat; \
}
#include "WebGLInternalFormatsTable.h"
// if we're here, then internalformat is not an effective internalformat i.e. is an unsized internalformat.
// so we can just return it.
return internalformat;
}
/*
* Note that the following two functions are inverse of each other:
* EffectiveInternalFormatFromInternalFormatAndType and
* InternalFormatAndTypeFromEffectiveInternalFormat both implement OpenGL ES 3.0.3 Table 3.2
* but in opposite directions.
*/
TexInternalFormat
EffectiveInternalFormatFromUnsizedInternalFormatAndType(TexInternalFormat internalformat,
TexType type)
{
MOZ_ASSERT(TypeFromInternalFormat(internalformat) == LOCAL_GL_NONE);
#define HANDLE_WEBGL_INTERNAL_FORMAT(table_effectiveinternalformat, table_internalformat, table_type) \
if (internalformat == table_internalformat && type == table_type) { \
return table_effectiveinternalformat; \
}
#include "WebGLInternalFormatsTable.h"
// If we're here, that means that type was incompatible with the given internalformat.
return LOCAL_GL_NONE;
}
void
UnsizedInternalFormatAndTypeFromEffectiveInternalFormat(TexInternalFormat effectiveinternalformat,
TexInternalFormat* out_internalformat,
TexType* out_type)
{
MOZ_ASSERT(TypeFromInternalFormat(effectiveinternalformat) != LOCAL_GL_NONE);
MOZ_ASSERT(out_internalformat);
MOZ_ASSERT(out_type);
GLenum internalformat = LOCAL_GL_NONE;
GLenum type = LOCAL_GL_NONE;
switch (effectiveinternalformat.get()) {
#define HANDLE_WEBGL_INTERNAL_FORMAT(table_effectiveinternalformat, table_internalformat, table_type) \
case table_effectiveinternalformat: \
internalformat = table_internalformat; \
type = table_type; \
break;
#include "WebGLInternalFormatsTable.h"
default:
MOZ_CRASH(); // impossible to get here
}
*out_internalformat = internalformat;
*out_type = type;
}
TexInternalFormat
EffectiveInternalFormatFromInternalFormatAndType(TexInternalFormat internalformat,
TexType type)
{
TexType typeOfInternalFormat = TypeFromInternalFormat(internalformat);
if (typeOfInternalFormat == LOCAL_GL_NONE) {
return EffectiveInternalFormatFromUnsizedInternalFormatAndType(internalformat, type);
} else if (typeOfInternalFormat == type) {
return internalformat;
} else {
return LOCAL_GL_NONE;
}
}
/**
* Convert effective internalformat into GL function parameters
* valid for underlying driver.
*/
void
DriverFormatsFromEffectiveInternalFormat(gl::GLContext* gl,
TexInternalFormat effectiveinternalformat,
GLenum* out_driverInternalFormat,
GLenum* out_driverFormat,
GLenum* out_driverType)
{
MOZ_ASSERT(out_driverInternalFormat);
MOZ_ASSERT(out_driverFormat);
MOZ_ASSERT(out_driverType);
TexInternalFormat unsizedinternalformat = LOCAL_GL_NONE;
TexType type = LOCAL_GL_NONE;
UnsizedInternalFormatAndTypeFromEffectiveInternalFormat(effectiveinternalformat,
&unsizedinternalformat, &type);
// driverType: almost always the generic type that we just got, except on ES
// we must replace HALF_FLOAT by HALF_FLOAT_OES
GLenum driverType = type.get();
if (gl->IsGLES() && type == LOCAL_GL_HALF_FLOAT) {
driverType = LOCAL_GL_HALF_FLOAT_OES;
}
// driverFormat: always just the unsized internalformat that we just got
GLenum driverFormat = unsizedinternalformat.get();
// driverInternalFormat: almost always the same as driverFormat, but on desktop GL,
// in some cases we must pass a different value. On ES, they are equal by definition
// as it is an error to pass internalformat!=format.
GLenum driverInternalFormat = driverFormat;
if (!gl->IsGLES()) {
// Cases where desktop OpenGL requires a tweak to 'format'
if (driverFormat == LOCAL_GL_SRGB) {
driverFormat = LOCAL_GL_RGB;
} else if (driverFormat == LOCAL_GL_SRGB_ALPHA) {
driverFormat = LOCAL_GL_RGBA;
}
// WebGL2's new formats are not legal values for internalformat,
// as using unsized internalformat is deprecated.
if (driverFormat == LOCAL_GL_RED ||
driverFormat == LOCAL_GL_RG ||
driverFormat == LOCAL_GL_RED_INTEGER ||
driverFormat == LOCAL_GL_RG_INTEGER ||
driverFormat == LOCAL_GL_RGB_INTEGER ||
driverFormat == LOCAL_GL_RGBA_INTEGER)
{
driverInternalFormat = effectiveinternalformat.get();
}
// Cases where desktop OpenGL requires a sized internalformat,
// as opposed to the unsized internalformat that had the same
// GLenum value as 'format', in order to get the precise
// semantics that we want. For example, for floating-point formats,
// we seem to need a sized internalformat to get non-clamped floating
// point texture sampling. Can't find the spec reference for that,
// but that's at least the case on my NVIDIA driver version 331.
if (unsizedinternalformat == LOCAL_GL_DEPTH_COMPONENT ||
unsizedinternalformat == LOCAL_GL_DEPTH_STENCIL ||
type == LOCAL_GL_FLOAT ||
type == LOCAL_GL_HALF_FLOAT)
{
driverInternalFormat = effectiveinternalformat.get();
}
}
*out_driverInternalFormat = driverInternalFormat;
*out_driverFormat = driverFormat;
*out_driverType = driverType;
}
/**
* Return the bits per texel for format & type combination.
* Assumes that format & type are a valid combination as checked with
* ValidateTexImageFormatAndType().
*/
size_t
GetBitsPerTexel(TexInternalFormat effectiveinternalformat)
{
switch (effectiveinternalformat.get()) {
case LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1:
case LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1:
return 2;
case LOCAL_GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case LOCAL_GL_ATC_RGB:
case LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1:
case LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1:
case LOCAL_GL_ETC1_RGB8_OES:
return 4;
case LOCAL_GL_ALPHA8:
case LOCAL_GL_LUMINANCE8:
case LOCAL_GL_R8:
case LOCAL_GL_R8I:
case LOCAL_GL_R8UI:
case LOCAL_GL_R8_SNORM:
case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
case LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA:
case LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA:
return 8;
case LOCAL_GL_LUMINANCE8_ALPHA8:
case LOCAL_GL_RGBA4:
case LOCAL_GL_RGB5_A1:
case LOCAL_GL_DEPTH_COMPONENT16:
case LOCAL_GL_RG8:
case LOCAL_GL_R16I:
case LOCAL_GL_R16UI:
case LOCAL_GL_RGB565:
case LOCAL_GL_R16F:
case LOCAL_GL_RG8I:
case LOCAL_GL_RG8UI:
case LOCAL_GL_RG8_SNORM:
case LOCAL_GL_ALPHA16F_EXT:
case LOCAL_GL_LUMINANCE16F_EXT:
return 16;
case LOCAL_GL_RGB8:
case LOCAL_GL_DEPTH_COMPONENT24:
case LOCAL_GL_SRGB8:
case LOCAL_GL_RGB8UI:
case LOCAL_GL_RGB8I:
case LOCAL_GL_RGB8_SNORM:
return 24;
case LOCAL_GL_RGBA8:
case LOCAL_GL_RGB10_A2:
case LOCAL_GL_R32F:
case LOCAL_GL_RG16F:
case LOCAL_GL_R32I:
case LOCAL_GL_R32UI:
case LOCAL_GL_RG16I:
case LOCAL_GL_RG16UI:
case LOCAL_GL_DEPTH24_STENCIL8:
case LOCAL_GL_R11F_G11F_B10F:
case LOCAL_GL_RGB9_E5:
case LOCAL_GL_SRGB8_ALPHA8:
case LOCAL_GL_DEPTH_COMPONENT32F:
case LOCAL_GL_RGBA8UI:
case LOCAL_GL_RGBA8I:
case LOCAL_GL_RGBA8_SNORM:
case LOCAL_GL_RGB10_A2UI:
case LOCAL_GL_LUMINANCE_ALPHA16F_EXT:
case LOCAL_GL_ALPHA32F_EXT:
case LOCAL_GL_LUMINANCE32F_EXT:
return 32;
case LOCAL_GL_DEPTH32F_STENCIL8:
return 40;
case LOCAL_GL_RGB16F:
case LOCAL_GL_RGB16UI:
case LOCAL_GL_RGB16I:
return 48;
case LOCAL_GL_RG32F:
case LOCAL_GL_RG32I:
case LOCAL_GL_RG32UI:
case LOCAL_GL_RGBA16F:
case LOCAL_GL_RGBA16UI:
case LOCAL_GL_RGBA16I:
case LOCAL_GL_LUMINANCE_ALPHA32F_EXT:
return 64;
case LOCAL_GL_RGB32F:
case LOCAL_GL_RGB32UI:
case LOCAL_GL_RGB32I:
return 96;
case LOCAL_GL_RGBA32F:
case LOCAL_GL_RGBA32UI:
case LOCAL_GL_RGBA32I:
return 128;
default:
MOZ_ASSERT(false, "Unhandled format");
return 0;
}
}
void
WebGLContext::GenerateWarning(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
GenerateWarning(fmt, ap);
va_end(ap);
}
void
WebGLContext::GenerateWarning(const char *fmt, va_list ap)
{
if (!ShouldGenerateWarnings())
return;
mAlreadyGeneratedWarnings++;
char buf[1024];
PR_vsnprintf(buf, 1024, fmt, ap);
// no need to print to stderr, as JS_ReportWarning takes care of this for us.
AutoJSContext cx;
JS_ReportWarning(cx, "WebGL: %s", buf);
if (!ShouldGenerateWarnings()) {
JS_ReportWarning(cx,
"WebGL: No further warnings will be reported for this WebGL context "
"(already reported %d warnings)", mAlreadyGeneratedWarnings);
}
}
bool
WebGLContext::ShouldGenerateWarnings() const
{
if (mMaxWarnings == -1) {
return true;
}
return mAlreadyGeneratedWarnings < mMaxWarnings;
}
CheckedUint32
WebGLContext::GetImageSize(GLsizei height,
GLsizei width,
GLsizei depth,
uint32_t pixelSize,
uint32_t packOrUnpackAlignment)
{
CheckedUint32 checked_plainRowSize = CheckedUint32(width) * pixelSize;
// alignedRowSize = row size rounded up to next multiple of packAlignment
CheckedUint32 checked_alignedRowSize = RoundedToNextMultipleOf(checked_plainRowSize, packOrUnpackAlignment);
// if height is 0, we don't need any memory to store this; without this check, we'll get an overflow
CheckedUint32 checked_2dImageSize
= height <= 0 ? 0 : (height-1) * checked_alignedRowSize + checked_plainRowSize;
// FIXME - we should honor UNPACK_IMAGE_HEIGHT
CheckedUint32 checked_imageSize = checked_2dImageSize * depth;
return checked_imageSize;
}
void
WebGLContext::SynthesizeGLError(GLenum err)
{
/* ES2 section 2.5 "GL Errors" states that implementations can have
* multiple 'flags', as errors might be caught in different parts of
* a distributed implementation.
* We're signing up as a distributed implementation here, with
* separate flags for WebGL and the underlying GLContext.
*/
if (!mWebGLError)
mWebGLError = err;
}
void
WebGLContext::SynthesizeGLError(GLenum err, const char *fmt, ...)
{
va_list va;
va_start(va, fmt);
GenerateWarning(fmt, va);
va_end(va);
return SynthesizeGLError(err);
}
void
WebGLContext::ErrorInvalidEnum(const char *fmt, ...)
{
va_list va;
va_start(va, fmt);
GenerateWarning(fmt, va);
va_end(va);
return SynthesizeGLError(LOCAL_GL_INVALID_ENUM);
}
void
WebGLContext::ErrorInvalidEnumInfo(const char *info, GLenum enumvalue)
{
return ErrorInvalidEnum("%s: invalid enum value 0x%x", info, enumvalue);
}
void
WebGLContext::ErrorInvalidOperation(const char *fmt, ...)
{
va_list va;
va_start(va, fmt);
GenerateWarning(fmt, va);
va_end(va);
return SynthesizeGLError(LOCAL_GL_INVALID_OPERATION);
}
void
WebGLContext::ErrorInvalidValue(const char *fmt, ...)
{
va_list va;
va_start(va, fmt);
GenerateWarning(fmt, va);
va_end(va);
return SynthesizeGLError(LOCAL_GL_INVALID_VALUE);
}
void
WebGLContext::ErrorInvalidFramebufferOperation(const char *fmt, ...)
{
va_list va;
va_start(va, fmt);
GenerateWarning(fmt, va);
va_end(va);
return SynthesizeGLError(LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION);
}
void
WebGLContext::ErrorOutOfMemory(const char *fmt, ...)
{
va_list va;
va_start(va, fmt);
GenerateWarning(fmt, va);
va_end(va);
return SynthesizeGLError(LOCAL_GL_OUT_OF_MEMORY);
}
const char *
WebGLContext::ErrorName(GLenum error)
{
switch(error) {
case LOCAL_GL_INVALID_ENUM:
return "INVALID_ENUM";
case LOCAL_GL_INVALID_OPERATION:
return "INVALID_OPERATION";
case LOCAL_GL_INVALID_VALUE:
return "INVALID_VALUE";
case LOCAL_GL_OUT_OF_MEMORY:
return "OUT_OF_MEMORY";
case LOCAL_GL_INVALID_FRAMEBUFFER_OPERATION:
return "INVALID_FRAMEBUFFER_OPERATION";
case LOCAL_GL_NO_ERROR:
return "NO_ERROR";
default:
MOZ_ASSERT(false);
return "[unknown WebGL error!]";
}
}
const char*
WebGLContext::EnumName(GLenum glenum)
{
switch (glenum) {
#define XX(x) case LOCAL_GL_##x: return #x
XX(ALPHA);
XX(ATC_RGB);
XX(ATC_RGBA_EXPLICIT_ALPHA);
XX(ATC_RGBA_INTERPOLATED_ALPHA);
XX(COMPRESSED_RGBA_PVRTC_2BPPV1);
XX(COMPRESSED_RGBA_PVRTC_4BPPV1);
XX(COMPRESSED_RGBA_S3TC_DXT1_EXT);
XX(COMPRESSED_RGBA_S3TC_DXT3_EXT);
XX(COMPRESSED_RGBA_S3TC_DXT5_EXT);
XX(COMPRESSED_RGB_PVRTC_2BPPV1);
XX(COMPRESSED_RGB_PVRTC_4BPPV1);
XX(COMPRESSED_RGB_S3TC_DXT1_EXT);
XX(DEPTH_COMPONENT);
XX(DEPTH_COMPONENT16);
XX(DEPTH_COMPONENT32);
XX(DEPTH_STENCIL);
XX(DEPTH24_STENCIL8);
XX(ETC1_RGB8_OES);
XX(FLOAT);
XX(HALF_FLOAT);
XX(LUMINANCE);
XX(LUMINANCE_ALPHA);
XX(RGB);
XX(RGB16F);
XX(RGB32F);
XX(RGBA);
XX(RGBA16F);
XX(RGBA32F);
XX(SRGB);
XX(SRGB_ALPHA);
XX(TEXTURE_2D);
XX(TEXTURE_3D);
XX(TEXTURE_CUBE_MAP);
XX(TEXTURE_CUBE_MAP_NEGATIVE_X);
XX(TEXTURE_CUBE_MAP_NEGATIVE_Y);
XX(TEXTURE_CUBE_MAP_NEGATIVE_Z);
XX(TEXTURE_CUBE_MAP_POSITIVE_X);
XX(TEXTURE_CUBE_MAP_POSITIVE_Y);
XX(TEXTURE_CUBE_MAP_POSITIVE_Z);
XX(UNSIGNED_BYTE);
XX(UNSIGNED_INT);
XX(UNSIGNED_INT_24_8);
XX(UNSIGNED_SHORT);
XX(UNSIGNED_SHORT_4_4_4_4);
XX(UNSIGNED_SHORT_5_5_5_1);
XX(UNSIGNED_SHORT_5_6_5);
#undef XX
}
return "[Unknown enum name]";
}
bool
WebGLContext::IsCompressedTextureFormat(GLenum format)
{
switch (format) {
case LOCAL_GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
case LOCAL_GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
case LOCAL_GL_ATC_RGB:
case LOCAL_GL_ATC_RGBA_EXPLICIT_ALPHA:
case LOCAL_GL_ATC_RGBA_INTERPOLATED_ALPHA:
case LOCAL_GL_COMPRESSED_RGB_PVRTC_4BPPV1:
case LOCAL_GL_COMPRESSED_RGB_PVRTC_2BPPV1:
case LOCAL_GL_COMPRESSED_RGBA_PVRTC_4BPPV1:
case LOCAL_GL_COMPRESSED_RGBA_PVRTC_2BPPV1:
case LOCAL_GL_ETC1_RGB8_OES:
case LOCAL_GL_COMPRESSED_R11_EAC:
case LOCAL_GL_COMPRESSED_SIGNED_R11_EAC:
case LOCAL_GL_COMPRESSED_RG11_EAC:
case LOCAL_GL_COMPRESSED_SIGNED_RG11_EAC:
case LOCAL_GL_COMPRESSED_RGB8_ETC2:
case LOCAL_GL_COMPRESSED_SRGB8_ETC2:
case LOCAL_GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
case LOCAL_GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
case LOCAL_GL_COMPRESSED_RGBA8_ETC2_EAC:
case LOCAL_GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
return true;
default:
return false;
}
}
bool
WebGLContext::IsTextureFormatCompressed(TexInternalFormat format)
{
return IsCompressedTextureFormat(format.get());
}
GLenum
WebGLContext::GetAndFlushUnderlyingGLErrors()
{
// Get and clear GL error in ALL cases.
GLenum error = gl->fGetError();
// Only store in mUnderlyingGLError if is hasn't already recorded an
// error.
if (!mUnderlyingGLError)
mUnderlyingGLError = error;
return error;
}
#ifdef DEBUG
// For NaNs, etc.
static bool
IsCacheCorrect(float cached, float actual)
{
if (IsNaN(cached)) {
// GL is allowed to do anything it wants for NaNs, so if we're shadowing
// a NaN, then whatever `actual` is might be correct.
return true;
}
return cached == actual;
}
void
AssertUintParamCorrect(gl::GLContext* gl, GLenum pname, GLuint shadow)
{
GLuint val = 0;
gl->GetUIntegerv(pname, &val);
if (val != shadow) {
printf_stderr("Failed 0x%04x shadow: Cached 0x%x/%u, should be 0x%x/%u.\n",
pname, shadow, shadow, val, val);
MOZ_ASSERT(false, "Bad cached value.");
}
}
void
AssertMaskedUintParamCorrect(gl::GLContext* gl, GLenum pname, GLuint mask, GLuint shadow)
{
GLuint val = 0;
gl->GetUIntegerv(pname, &val);
const GLuint valMasked = val & mask;
const GLuint shadowMasked = shadow & mask;
if (valMasked != shadowMasked) {
printf_stderr("Failed 0x%04x shadow: Cached 0x%x/%u, should be 0x%x/%u.\n",
pname, shadowMasked, shadowMasked, valMasked, valMasked);
MOZ_ASSERT(false, "Bad cached value.");
}
}
#else
void
AssertUintParamCorrect(gl::GLContext*, GLenum, GLuint)
{
}
#endif
void
WebGLContext::AssertCachedBindings()
{
#ifdef DEBUG
MakeContextCurrent();
GetAndFlushUnderlyingGLErrors();
if (IsExtensionEnabled(WebGLExtensionID::OES_vertex_array_object)) {
GLuint bound = mBoundVertexArray ? mBoundVertexArray->GLName() : 0;
AssertUintParamCorrect(gl, LOCAL_GL_VERTEX_ARRAY_BINDING, bound);
}
// Bound object state
GLuint bound = mBoundFramebuffer ? mBoundFramebuffer->GLName() : 0;
AssertUintParamCorrect(gl, LOCAL_GL_FRAMEBUFFER_BINDING, bound);
bound = mCurrentProgram ? mCurrentProgram->GLName() : 0;
AssertUintParamCorrect(gl, LOCAL_GL_CURRENT_PROGRAM, bound);
// Textures
GLenum activeTexture = mActiveTexture + LOCAL_GL_TEXTURE0;
AssertUintParamCorrect(gl, LOCAL_GL_ACTIVE_TEXTURE, activeTexture);
WebGLTexture* curTex = activeBoundTextureForTarget(LOCAL_GL_TEXTURE_2D);
bound = curTex ? curTex->GLName() : 0;
AssertUintParamCorrect(gl, LOCAL_GL_TEXTURE_BINDING_2D, bound);
curTex = activeBoundTextureForTarget(LOCAL_GL_TEXTURE_CUBE_MAP);
bound = curTex ? curTex->GLName() : 0;
AssertUintParamCorrect(gl, LOCAL_GL_TEXTURE_BINDING_CUBE_MAP, bound);
// Buffers
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);
GLint stencilBits = 0;
gl->fGetIntegerv(LOCAL_GL_STENCIL_BITS, &stencilBits);
const GLuint stencilRefMask = (1 << stencilBits) - 1;
AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_REF, stencilRefMask, mStencilRefFront);
AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_REF, stencilRefMask, 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
}
const char*
InfoFrom(WebGLTexImageFunc func, WebGLTexDimensions dims)
{
switch (dims) {
case WebGLTexDimensions::Tex2D:
switch (func) {
case WebGLTexImageFunc::TexImage: return "texImage2D";
case WebGLTexImageFunc::TexSubImage: return "texSubImage2D";
case WebGLTexImageFunc::CopyTexImage: return "copyTexImage2D";
case WebGLTexImageFunc::CopyTexSubImage: return "copyTexSubImage2D";
case WebGLTexImageFunc::CompTexImage: return "compressedTexImage2D";
case WebGLTexImageFunc::CompTexSubImage: return "compressedTexSubImage2D";
default:
MOZ_CRASH();
}
case WebGLTexDimensions::Tex3D:
switch (func) {
case WebGLTexImageFunc::TexImage: return "texImage3D";
case WebGLTexImageFunc::TexSubImage: return "texSubImage3D";
case WebGLTexImageFunc::CopyTexSubImage: return "copyTexSubImage3D";
case WebGLTexImageFunc::CompTexSubImage: return "compressedTexSubImage3D";
default:
MOZ_CRASH();
}
default:
MOZ_CRASH();
}
}
} // namespace mozilla
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