void WebGLContext::BufferData(GLenum target,
const dom::Nullable<dom::ArrayBuffer>& maybeSrc,
GLenum usage) {
const FuncScope funcScope(*this, "bufferData");
if (IsContextLost()) return;
if (!ValidateNonNull("src", maybeSrc)) return;
const auto& src = maybeSrc.Value();
src.ComputeLengthAndData();
BufferDataImpl(target, src.LengthAllowShared(), src.DataAllowShared(), usage);
}
void WebGLContext::BufferData(GLenum target, const dom::ArrayBufferView& src,
GLenum usage, GLuint srcElemOffset,
GLuint srcElemCountOverride) {
const FuncScope funcScope(*this, "bufferData");
if (IsContextLost()) return;
uint8_t* bytes;
size_t byteLen;
if (!ValidateArrayBufferView(src, srcElemOffset, srcElemCountOverride,
LOCAL_GL_INVALID_VALUE, &bytes, &byteLen)) {
return;
}
BufferDataImpl(target, byteLen, bytes, usage);
}
void
WebGLContext::BufferData(GLenum target, const dom::ArrayBufferView& src, GLenum usage,
GLuint srcElemOffset, GLuint srcElemCountOverride)
{
const char funcName[] = "bufferData";
if (IsContextLost())
return;
uint8_t* bytes;
size_t byteLen;
if (!ValidateArrayBufferView(funcName, src, srcElemOffset, srcElemCountOverride,
&bytes, &byteLen))
{
return;
}
BufferDataImpl(target, byteLen, bytes, usage);
}
void
WebGLContext::BufferData(GLenum target, WebGLsizeiptr size, GLenum usage)
{
const char funcName[] = "bufferData";
if (IsContextLost())
return;
if (!ValidateNonNegative(funcName, "size", size))
return;
////
const UniqueBuffer zeroBuffer(calloc(size, 1));
if (!zeroBuffer)
return ErrorOutOfMemory("%s: Failed to allocate zeros.", funcName);
BufferDataImpl(target, size_t(size), (const uint8_t*)zeroBuffer.get(), usage);
}
void WebGLContext::BufferData(GLenum target, WebGLsizeiptr size, GLenum usage) {
const FuncScope funcScope(*this, "bufferData");
if (IsContextLost()) return;
if (!ValidateNonNegative("size", size)) return;
////
const auto checkedSize = CheckedInt<size_t>(size);
if (!checkedSize.isValid())
return ErrorOutOfMemory("size too large for platform.");
const UniqueBuffer zeroBuffer(calloc(checkedSize.value(), 1u));
if (!zeroBuffer) return ErrorOutOfMemory("Failed to allocate zeros.");
BufferDataImpl(target, uint64_t{checkedSize.value()},
(const uint8_t*)zeroBuffer.get(), usage);
}