gecko-dev/dom/canvas/WebGL2ContextTextures.cpp

491 lines
18 KiB
C++

/* -*- Mode: C++; tab-width: 4; 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 "WebGL2Context.h"
#include "WebGLContextUtils.h"
#include "GLContext.h"
using namespace mozilla;
using namespace mozilla::dom;
bool
WebGL2Context::ValidateSizedInternalFormat(GLenum internalformat, const char* info)
{
switch (internalformat) {
// Sized Internal Formats
// https://www.khronos.org/opengles/sdk/docs/man3/html/glTexStorage2D.xhtml
case LOCAL_GL_R8:
case LOCAL_GL_R8_SNORM:
case LOCAL_GL_R16F:
case LOCAL_GL_R32F:
case LOCAL_GL_R8UI:
case LOCAL_GL_R8I:
case LOCAL_GL_R16UI:
case LOCAL_GL_R16I:
case LOCAL_GL_R32UI:
case LOCAL_GL_R32I:
case LOCAL_GL_RG8:
case LOCAL_GL_RG8_SNORM:
case LOCAL_GL_RG16F:
case LOCAL_GL_RG32F:
case LOCAL_GL_RG8UI:
case LOCAL_GL_RG8I:
case LOCAL_GL_RG16UI:
case LOCAL_GL_RG16I:
case LOCAL_GL_RG32UI:
case LOCAL_GL_RG32I:
case LOCAL_GL_RGB8:
case LOCAL_GL_SRGB8:
case LOCAL_GL_RGB565:
case LOCAL_GL_RGB8_SNORM:
case LOCAL_GL_R11F_G11F_B10F:
case LOCAL_GL_RGB9_E5:
case LOCAL_GL_RGB16F:
case LOCAL_GL_RGB32F:
case LOCAL_GL_RGB8UI:
case LOCAL_GL_RGB8I:
case LOCAL_GL_RGB16UI:
case LOCAL_GL_RGB16I:
case LOCAL_GL_RGB32UI:
case LOCAL_GL_RGB32I:
case LOCAL_GL_RGBA8:
case LOCAL_GL_SRGB8_ALPHA8:
case LOCAL_GL_RGBA8_SNORM:
case LOCAL_GL_RGB5_A1:
case LOCAL_GL_RGBA4:
case LOCAL_GL_RGB10_A2:
case LOCAL_GL_RGBA16F:
case LOCAL_GL_RGBA32F:
case LOCAL_GL_RGBA8UI:
case LOCAL_GL_RGBA8I:
case LOCAL_GL_RGB10_A2UI:
case LOCAL_GL_RGBA16UI:
case LOCAL_GL_RGBA16I:
case LOCAL_GL_RGBA32I:
case LOCAL_GL_RGBA32UI:
case LOCAL_GL_DEPTH_COMPONENT16:
case LOCAL_GL_DEPTH_COMPONENT24:
case LOCAL_GL_DEPTH_COMPONENT32F:
case LOCAL_GL_DEPTH24_STENCIL8:
case LOCAL_GL_DEPTH32F_STENCIL8:
return true;
}
if (IsCompressedTextureFormat(internalformat))
return true;
nsCString name;
EnumName(internalformat, &name);
ErrorInvalidEnum("%s: invalid internal format %s", info, name.get());
return false;
}
/** Validates parameters to texStorage{2D,3D} */
bool
WebGL2Context::ValidateTexStorage(GLenum target, GLsizei levels, GLenum internalformat,
GLsizei width, GLsizei height, GLsizei depth,
const char* info)
{
// GL_INVALID_OPERATION is generated if the default texture object is curently bound to target.
WebGLTexture* tex = ActiveBoundTextureForTarget(target);
if (!tex) {
ErrorInvalidOperation("%s: no texture is bound to target %s", info, EnumName(target));
return false;
}
// GL_INVALID_OPERATION is generated if the texture object currently bound to target already has
// GL_TEXTURE_IMMUTABLE_FORMAT set to GL_TRUE.
if (tex->IsImmutable()) {
ErrorInvalidOperation("%s: texture bound to target %s is already immutable", info, EnumName(target));
return false;
}
// GL_INVALID_ENUM is generated if internalformat is not a valid sized internal format.
if (!ValidateSizedInternalFormat(internalformat, info))
return false;
// GL_INVALID_VALUE is generated if width, height or levels are less than 1.
if (width < 1) { ErrorInvalidValue("%s: width is < 1", info); return false; }
if (height < 1) { ErrorInvalidValue("%s: height is < 1", info); return false; }
if (depth < 1) { ErrorInvalidValue("%s: depth is < 1", info); return false; }
if (levels < 1) { ErrorInvalidValue("%s: levels is < 1", info); return false; }
// GL_INVALID_OPERATION is generated if levels is greater than floor(log2(max(width, height, depth)))+1.
if (FloorLog2(std::max(std::max(width, height), depth)) + 1 < levels) {
ErrorInvalidOperation("%s: too many levels for given texture dimensions", info);
return false;
}
return true;
}
// -------------------------------------------------------------------------
// Texture objects
void
WebGL2Context::TexStorage2D(GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height)
{
if (IsContextLost())
return;
// GL_INVALID_ENUM is generated if target is not one of the accepted target enumerants.
if (target != LOCAL_GL_TEXTURE_2D && target != LOCAL_GL_TEXTURE_CUBE_MAP)
return ErrorInvalidEnum("texStorage2D: target is not TEXTURE_2D or TEXTURE_CUBE_MAP");
if (!ValidateTexStorage(target, levels, internalformat, width, height, 1, "texStorage2D"))
return;
GetAndFlushUnderlyingGLErrors();
gl->fTexStorage2D(target, levels, internalformat, width, height);
GLenum error = GetAndFlushUnderlyingGLErrors();
if (error) {
return GenerateWarning("texStorage2D generated error %s", ErrorName(error));
}
WebGLTexture* tex = ActiveBoundTextureForTarget(target);
tex->SetImmutable();
const size_t facesCount = (target == LOCAL_GL_TEXTURE_2D) ? 1 : 6;
GLsizei w = width;
GLsizei h = height;
for (size_t l = 0; l < size_t(levels); l++) {
for (size_t f = 0; f < facesCount; f++) {
tex->SetImageInfo(TexImageTargetForTargetAndFace(target, f),
l, w, h, 1,
internalformat,
WebGLImageDataStatus::UninitializedImageData);
}
w = std::max(1, w / 2);
h = std::max(1, h / 2);
}
}
void
WebGL2Context::TexStorage3D(GLenum target, GLsizei levels, GLenum internalformat,
GLsizei width, GLsizei height, GLsizei depth)
{
if (IsContextLost())
return;
// GL_INVALID_ENUM is generated if target is not one of the accepted target enumerants.
if (target != LOCAL_GL_TEXTURE_3D)
return ErrorInvalidEnum("texStorage3D: target is not TEXTURE_3D");
if (!ValidateTexStorage(target, levels, internalformat, width, height, depth, "texStorage3D"))
return;
GetAndFlushUnderlyingGLErrors();
gl->fTexStorage3D(target, levels, internalformat, width, height, depth);
GLenum error = GetAndFlushUnderlyingGLErrors();
if (error) {
return GenerateWarning("texStorage3D generated error %s", ErrorName(error));
}
WebGLTexture* tex = ActiveBoundTextureForTarget(target);
tex->SetImmutable();
GLsizei w = width;
GLsizei h = height;
GLsizei d = depth;
for (size_t l = 0; l < size_t(levels); l++) {
tex->SetImageInfo(TexImageTargetForTargetAndFace(target, 0),
l, w, h, d,
internalformat,
WebGLImageDataStatus::UninitializedImageData);
w = std::max(1, w >> 1);
h = std::max(1, h >> 1);
d = std::max(1, d >> 1);
}
}
void
WebGL2Context::TexImage3D(GLenum target, GLint level, GLenum internalformat,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum format, GLenum type,
const Nullable<dom::ArrayBufferView> &pixels,
ErrorResult& rv)
{
if (IsContextLost())
return;
void* data;
size_t dataLength;
js::Scalar::Type jsArrayType;
if (pixels.IsNull()) {
data = nullptr;
dataLength = 0;
jsArrayType = js::Scalar::MaxTypedArrayViewType;
} else {
const ArrayBufferView& view = pixels.Value();
view.ComputeLengthAndData();
data = view.Data();
dataLength = view.Length();
jsArrayType = JS_GetArrayBufferViewType(view.Obj());
}
const WebGLTexImageFunc func = WebGLTexImageFunc::TexImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex3D;
if (!ValidateTexImageTarget(target, func, dims))
return;
TexImageTarget texImageTarget = target;
if (!ValidateTexImage(texImageTarget, level, internalformat,
0, 0, 0,
width, height, depth,
border, format, type, func, dims))
{
return;
}
if (!ValidateTexInputData(type, jsArrayType, func, dims))
return;
TexInternalFormat effectiveInternalFormat =
EffectiveInternalFormatFromInternalFormatAndType(internalformat, type);
if (effectiveInternalFormat == LOCAL_GL_NONE) {
return ErrorInvalidOperation("texImage3D: bad combination of internalformat and type");
}
// we need to find the exact sized format of the source data. Slightly abusing
// EffectiveInternalFormatFromInternalFormatAndType for that purpose. Really, an unsized source format
// is the same thing as an unsized internalformat.
TexInternalFormat effectiveSourceFormat =
EffectiveInternalFormatFromInternalFormatAndType(format, type);
MOZ_ASSERT(effectiveSourceFormat != LOCAL_GL_NONE); // should have validated format/type combo earlier
const size_t srcbitsPerTexel = GetBitsPerTexel(effectiveSourceFormat);
MOZ_ASSERT((srcbitsPerTexel % 8) == 0); // should not have compressed formats here.
size_t srcTexelSize = srcbitsPerTexel / 8;
CheckedUint32 checked_neededByteLength =
GetImageSize(height, width, depth, srcTexelSize, mPixelStoreUnpackAlignment);
if (!checked_neededByteLength.isValid())
return ErrorInvalidOperation("texSubImage2D: integer overflow computing the needed buffer size");
uint32_t bytesNeeded = checked_neededByteLength.value();
if (dataLength && dataLength < bytesNeeded)
return ErrorInvalidOperation("texImage3D: not enough data for operation (need %d, have %d)",
bytesNeeded, dataLength);
WebGLTexture* tex = ActiveBoundTextureForTexImageTarget(texImageTarget);
if (!tex)
return ErrorInvalidOperation("texImage3D: no texture is bound to this target");
if (tex->IsImmutable()) {
return ErrorInvalidOperation(
"texImage3D: disallowed because the texture "
"bound to this target has already been made immutable by texStorage3D");
}
GLenum driverType = LOCAL_GL_NONE;
GLenum driverInternalFormat = LOCAL_GL_NONE;
GLenum driverFormat = LOCAL_GL_NONE;
DriverFormatsFromEffectiveInternalFormat(gl,
effectiveInternalFormat,
&driverInternalFormat,
&driverFormat,
&driverType);
MakeContextCurrent();
GetAndFlushUnderlyingGLErrors();
gl->fTexImage3D(texImageTarget.get(), level,
driverInternalFormat,
width, height, depth,
0, driverFormat, driverType,
data);
GLenum error = GetAndFlushUnderlyingGLErrors();
if (error) {
return GenerateWarning("texImage3D generated error %s", ErrorName(error));
}
tex->SetImageInfo(texImageTarget, level,
width, height, depth,
effectiveInternalFormat,
data ? WebGLImageDataStatus::InitializedImageData
: WebGLImageDataStatus::UninitializedImageData);
}
void
WebGL2Context::TexSubImage3D(GLenum rawTarget, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLenum type, const Nullable<dom::ArrayBufferView>& pixels,
ErrorResult& rv)
{
if (IsContextLost())
return;
if (pixels.IsNull())
return ErrorInvalidValue("texSubImage3D: pixels must not be null!");
const ArrayBufferView& view = pixels.Value();
view.ComputeLengthAndData();
const WebGLTexImageFunc func = WebGLTexImageFunc::TexSubImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex3D;
if (!ValidateTexImageTarget(rawTarget, func, dims))
return;
TexImageTarget texImageTarget(rawTarget);
WebGLTexture* tex = ActiveBoundTextureForTexImageTarget(texImageTarget);
if (!tex) {
return ErrorInvalidOperation("texSubImage3D: no texture bound on active texture unit");
}
if (!tex->HasImageInfoAt(texImageTarget, level)) {
return ErrorInvalidOperation("texSubImage3D: no previously defined texture image");
}
const WebGLTexture::ImageInfo& imageInfo = tex->ImageInfoAt(texImageTarget, level);
const TexInternalFormat existingEffectiveInternalFormat = imageInfo.EffectiveInternalFormat();
TexInternalFormat existingUnsizedInternalFormat = LOCAL_GL_NONE;
TexType existingType = LOCAL_GL_NONE;
UnsizedInternalFormatAndTypeFromEffectiveInternalFormat(existingEffectiveInternalFormat,
&existingUnsizedInternalFormat,
&existingType);
if (!ValidateTexImage(texImageTarget, level, existingEffectiveInternalFormat.get(),
xoffset, yoffset, zoffset,
width, height, depth,
0, format, type, func, dims))
{
return;
}
if (type != existingType) {
return ErrorInvalidOperation("texSubImage3D: type differs from that of the existing image");
}
js::Scalar::Type jsArrayType = JS_GetArrayBufferViewType(view.Obj());
void* data = view.Data();
size_t dataLength = view.Length();
if (!ValidateTexInputData(type, jsArrayType, func, dims))
return;
const size_t bitsPerTexel = GetBitsPerTexel(existingEffectiveInternalFormat);
MOZ_ASSERT((bitsPerTexel % 8) == 0); // should not have compressed formats here.
size_t srcTexelSize = bitsPerTexel / 8;
if (width == 0 || height == 0 || depth == 0)
return; // no effect, we better return right now
CheckedUint32 checked_neededByteLength =
GetImageSize(height, width, depth, srcTexelSize, mPixelStoreUnpackAlignment);
if (!checked_neededByteLength.isValid())
return ErrorInvalidOperation("texSubImage2D: integer overflow computing the needed buffer size");
uint32_t bytesNeeded = checked_neededByteLength.value();
if (dataLength < bytesNeeded)
return ErrorInvalidOperation("texSubImage2D: not enough data for operation (need %d, have %d)", bytesNeeded, dataLength);
if (imageInfo.HasUninitializedImageData()) {
bool coversWholeImage = xoffset == 0 &&
yoffset == 0 &&
zoffset == 0 &&
width == imageInfo.Width() &&
height == imageInfo.Height() &&
depth == imageInfo.Depth();
if (coversWholeImage) {
tex->SetImageDataStatus(texImageTarget, level, WebGLImageDataStatus::InitializedImageData);
} else {
tex->EnsureNoUninitializedImageData(texImageTarget, level);
}
}
GLenum driverType = LOCAL_GL_NONE;
GLenum driverInternalFormat = LOCAL_GL_NONE;
GLenum driverFormat = LOCAL_GL_NONE;
DriverFormatsFromEffectiveInternalFormat(gl,
existingEffectiveInternalFormat,
&driverInternalFormat,
&driverFormat,
&driverType);
MakeContextCurrent();
gl->fTexSubImage3D(texImageTarget.get(), level,
xoffset, yoffset, zoffset,
width, height, depth,
driverFormat, driverType, data);
}
void
WebGL2Context::TexSubImage3D(GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLenum format, GLenum type, dom::ImageData* data,
ErrorResult& rv)
{
MOZ_CRASH("Not Implemented.");
}
void
WebGL2Context::CopyTexSubImage3D(GLenum target, GLint level,
GLint xoffset, GLint yoffset, GLint zoffset,
GLint x, GLint y, GLsizei width, GLsizei height)
{
MOZ_CRASH("Not Implemented.");
}
void
WebGL2Context::CompressedTexImage3D(GLenum target, GLint level, GLenum internalformat,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLsizei imageSize, const dom::ArrayBufferView& data)
{
MOZ_CRASH("Not Implemented.");
}
void
WebGL2Context::CompressedTexSubImage3D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum format, GLsizei imageSize, const dom::ArrayBufferView& data)
{
MOZ_CRASH("Not Implemented.");
}
JS::Value
WebGL2Context::GetTexParameterInternal(const TexTarget& target, GLenum pname)
{
switch (pname) {
case LOCAL_GL_TEXTURE_BASE_LEVEL:
case LOCAL_GL_TEXTURE_COMPARE_FUNC:
case LOCAL_GL_TEXTURE_COMPARE_MODE:
case LOCAL_GL_TEXTURE_IMMUTABLE_FORMAT:
case LOCAL_GL_TEXTURE_IMMUTABLE_LEVELS:
case LOCAL_GL_TEXTURE_MAX_LEVEL:
case LOCAL_GL_TEXTURE_SWIZZLE_A:
case LOCAL_GL_TEXTURE_SWIZZLE_B:
case LOCAL_GL_TEXTURE_SWIZZLE_G:
case LOCAL_GL_TEXTURE_SWIZZLE_R:
case LOCAL_GL_TEXTURE_WRAP_R:
{
GLint i = 0;
gl->fGetTexParameteriv(target.get(), pname, &i);
return JS::NumberValue(uint32_t(i));
}
case LOCAL_GL_TEXTURE_MAX_LOD:
case LOCAL_GL_TEXTURE_MIN_LOD:
{
GLfloat f = 0.0f;
gl->fGetTexParameterfv(target.get(), pname, &f);
return JS::NumberValue(float(f));
}
}
return WebGLContext::GetTexParameterInternal(target, pname);
}