void
WebGLContext::BufferSubData(GLenum target, WebGLsizeiptr byteOffset,
const ArrayBufferView& data)
{
if (IsContextLost())
return;
WebGLRefPtr<WebGLBuffer>* bufferSlot = GetBufferSlotByTarget(target, "bufferSubData");
if (!bufferSlot) {
return;
}
if (byteOffset < 0)
return ErrorInvalidValue("bufferSubData: negative offset");
WebGLBuffer* boundBuffer = bufferSlot->get();
if (!boundBuffer)
return ErrorInvalidOperation("bufferSubData: no buffer bound!");
CheckedInt<WebGLsizeiptr> checked_neededByteLength = CheckedInt<WebGLsizeiptr>(byteOffset) + data.Length();
if (!checked_neededByteLength.isValid())
return ErrorInvalidValue("bufferSubData: integer overflow computing the needed byte length");
if (checked_neededByteLength.value() > boundBuffer->ByteLength())
return ErrorInvalidValue("bufferSubData: not enough data -- operation requires %d bytes, but buffer only has %d bytes",
checked_neededByteLength.value(), boundBuffer->ByteLength());
boundBuffer->ElementArrayCacheBufferSubData(byteOffset, data.Data(), data.Length());
MakeContextCurrent();
gl->fBufferSubData(target, byteOffset, data.Length(), data.Data());
}
void
WebGLContext::BufferData(GLenum target,
const Nullable<ArrayBuffer> &maybeData,
GLenum usage)
{
if (IsContextLost())
return;
if (maybeData.IsNull()) {
// see http://www.khronos.org/bugzilla/show_bug.cgi?id=386
return ErrorInvalidValue("bufferData: null object passed");
}
WebGLRefPtr<WebGLBuffer>* bufferSlot = GetBufferSlotByTarget(target, "bufferData");
if (!bufferSlot) {
return;
}
const ArrayBuffer& data = maybeData.Value();
data.ComputeLengthAndData();
// Careful: data.Length() could conceivably be any uint32_t, but GLsizeiptr
// is like intptr_t.
if (!CheckedInt<GLsizeiptr>(data.Length()).isValid())
return ErrorOutOfMemory("bufferData: bad size");
if (!ValidateBufferUsageEnum(usage, "bufferData: usage"))
return;
WebGLBuffer* boundBuffer = bufferSlot->get();
if (!boundBuffer)
return ErrorInvalidOperation("bufferData: no buffer bound!");
MakeContextCurrent();
InvalidateBufferFetching();
GLenum error = CheckedBufferData(target, data.Length(), data.Data(), usage);
if (error) {
GenerateWarning("bufferData generated error %s", ErrorName(error));
return;
}
boundBuffer->SetByteLength(data.Length());
if (!boundBuffer->ElementArrayCacheBufferData(data.Data(), data.Length())) {
return ErrorOutOfMemory("bufferData: out of memory");
}
}
void
WebGLContext::BufferData(GLenum target, WebGLsizeiptr size,
GLenum usage)
{
if (IsContextLost())
return;
WebGLRefPtr<WebGLBuffer>* bufferSlot = GetBufferSlotByTarget(target, "bufferData");
if (!bufferSlot) {
return;
}
if (size < 0)
return ErrorInvalidValue("bufferData: negative size");
if (!ValidateBufferUsageEnum(usage, "bufferData: usage"))
return;
// careful: WebGLsizeiptr is always 64-bit, but GLsizeiptr is like intptr_t.
if (!CheckedInt<GLsizeiptr>(size).isValid())
return ErrorOutOfMemory("bufferData: bad size");
WebGLBuffer* boundBuffer = bufferSlot->get();
if (!boundBuffer)
return ErrorInvalidOperation("bufferData: no buffer bound!");
void* zeroBuffer = calloc(size, 1);
if (!zeroBuffer)
return ErrorOutOfMemory("bufferData: out of memory");
MakeContextCurrent();
InvalidateBufferFetching();
GLenum error = CheckedBufferData(target, size, zeroBuffer, usage);
free(zeroBuffer);
if (error) {
GenerateWarning("bufferData generated error %s", ErrorName(error));
return;
}
boundBuffer->SetByteLength(size);
if (!boundBuffer->ElementArrayCacheBufferData(nullptr, size)) {
return ErrorOutOfMemory("bufferData: out of memory");
}
}
void
WebGLContext::BufferSubData(GLenum target, WebGLsizeiptr byteOffset,
const Nullable<ArrayBuffer> &maybeData)
{
if (IsContextLost())
return;
if (maybeData.IsNull()) {
// see http://www.khronos.org/bugzilla/show_bug.cgi?id=386
return;
}
WebGLRefPtr<WebGLBuffer>* bufferSlot = GetBufferSlotByTarget(target, "bufferSubData");
if (!bufferSlot) {
return;
}
if (byteOffset < 0)
return ErrorInvalidValue("bufferSubData: negative offset");
WebGLBuffer* boundBuffer = bufferSlot->get();
if (!boundBuffer)
return ErrorInvalidOperation("bufferData: no buffer bound!");
const ArrayBuffer& data = maybeData.Value();
data.ComputeLengthAndData();
CheckedInt<WebGLsizeiptr> checked_neededByteLength = CheckedInt<WebGLsizeiptr>(byteOffset) + data.Length();
if (!checked_neededByteLength.isValid())
return ErrorInvalidValue("bufferSubData: integer overflow computing the needed byte length");
if (checked_neededByteLength.value() > boundBuffer->ByteLength())
return ErrorInvalidValue("bufferSubData: not enough data - operation requires %d bytes, but buffer only has %d bytes",
checked_neededByteLength.value(), boundBuffer->ByteLength());
MakeContextCurrent();
boundBuffer->ElementArrayCacheBufferSubData(byteOffset, data.Data(), data.Length());
gl->fBufferSubData(target, byteOffset, data.Length(), data.Data());
}
void
WebGLContext::BufferData(GLenum target, const ArrayBufferView& data,
GLenum usage)
{
if (IsContextLost())
return;
WebGLRefPtr<WebGLBuffer>* bufferSlot = GetBufferSlotByTarget(target, "bufferSubData");
if (!bufferSlot) {
return;
}
if (!ValidateBufferUsageEnum(usage, "bufferData: usage"))
return;
WebGLBuffer* boundBuffer = bufferSlot->get();
if (!boundBuffer)
return ErrorInvalidOperation("bufferData: no buffer bound!");
data.ComputeLengthAndData();
// Careful: data.Length() could conceivably be any uint32_t, but GLsizeiptr
// is like intptr_t.
if (!CheckedInt<GLsizeiptr>(data.Length()).isValid())
return ErrorOutOfMemory("bufferData: bad size");
InvalidateBufferFetching();
MakeContextCurrent();
GLenum error = CheckedBufferData(target, data.Length(), data.Data(), usage);
if (error) {
GenerateWarning("bufferData generated error %s", ErrorName(error));
return;
}
boundBuffer->SetByteLength(data.Length());
if (!boundBuffer->ElementArrayCacheBufferData(data.Data(), data.Length())) {
return ErrorOutOfMemory("bufferData: out of memory");
}
}