void
WebGLContext::BindVertexArray(WebGLVertexArray* array)
{
if (IsContextLost())
return;
if (!ValidateObjectAllowDeletedOrNull("bindVertexArrayObject", array))
return;
if (array && array->IsDeleted()) {
/* http://www.khronos.org/registry/gles/extensions/OES/OES_vertex_array_object.txt
* BindVertexArrayOES fails and an INVALID_OPERATION error is
* generated if array is not a name returned from a previous call to
* GenVertexArraysOES, or if such a name has since been deleted with
* DeleteVertexArraysOES
*/
ErrorInvalidOperation("bindVertexArray: can't bind a deleted array!");
return;
}
InvalidateBufferFetching();
MakeContextCurrent();
if (array == nullptr) {
array = mDefaultVertexArray;
}
array->BindVertexArray();
MOZ_ASSERT(mBoundVertexArray == array);
}
void
WebGLContext::VertexAttribPointer(GLuint index, GLint size, GLenum type,
WebGLboolean normalized, GLsizei stride,
WebGLintptr byteOffset)
{
if (IsContextLost())
return;
if (!ValidateAttribIndex(index, "vertexAttribPointer"))
return;
if (!ValidateAttribPointer(false, index, size, type, normalized, stride, byteOffset, "vertexAttribPointer"))
return;
MOZ_ASSERT(mBoundVertexArray);
InvalidateBufferFetching();
/* XXX make work with bufferSubData & heterogeneous types
if (type != mBoundArrayBuffer->GLType())
return ErrorInvalidOperation("vertexAttribPointer: type must match bound VBO type: %d != %d", type, mBoundArrayBuffer->GLType());
*/
MakeContextCurrent();
gl->fVertexAttribPointer(index, size, type, normalized, stride,
reinterpret_cast<void*>(byteOffset));
WebGLVertexAttribData& vd = mBoundVertexArray->mAttribs[index];
const bool integerFunc = false;
vd.VertexAttribPointer(integerFunc, mBoundArrayBuffer, size, type, normalized, stride,
byteOffset);
}
void
WebGL2Context::VertexAttribIPointer(GLuint index, GLint size, GLenum type, GLsizei stride,
GLintptr offset)
{
if (IsContextLost())
return;
if (!ValidateAttribIndex(index, "vertexAttribIPointer"))
return;
if (!ValidateAttribPointer(true, index, size, type, LOCAL_GL_FALSE, stride, offset,
"vertexAttribIPointer"))
{
return;
}
MOZ_ASSERT(mBoundVertexArray);
mBoundVertexArray->EnsureAttrib(index);
InvalidateBufferFetching();
WebGLVertexAttribData& vd = mBoundVertexArray->mAttribs[index];
vd.buf = mBoundArrayBuffer;
vd.stride = stride;
vd.size = size;
vd.byteOffset = offset;
vd.type = type;
vd.normalized = false;
vd.integer = true;
MakeContextCurrent();
gl->fVertexAttribIPointer(index, size, type, stride, reinterpret_cast<void*>(offset));
}
void
WebGLContext::BindVertexArray(WebGLVertexArray* array)
{
if (IsContextLost())
return;
if (array && !ValidateObject("bindVertexArrayObject", *array))
return;
InvalidateBufferFetching();
MakeContextCurrent();
if (mBoundVertexArray) {
mBoundVertexArray->AddBufferBindCounts(-1);
}
if (array == nullptr) {
array = mDefaultVertexArray;
}
array->BindVertexArray();
MOZ_ASSERT(mBoundVertexArray == array);
if (mBoundVertexArray) {
mBoundVertexArray->AddBufferBindCounts(+1);
}
}
void
WebGLContext::EnableVertexAttribArray(GLuint index)
{
if (IsContextLost())
return;
if (!ValidateAttribIndex(index, "enableVertexAttribArray"))
return;
MakeContextCurrent();
InvalidateBufferFetching();
gl->fEnableVertexAttribArray(index);
MOZ_ASSERT(mBoundVertexArray);
mBoundVertexArray->mAttribs[index].mEnabled = true;
}
void
WebGLContext::BufferData(GLenum target, WebGLsizeiptr size, GLenum usage)
{
if (IsContextLost())
return;
if (!ValidateBufferTarget(target, "bufferData"))
return;
WebGLRefPtr<WebGLBuffer>& bufferSlot = GetBufferSlotByTarget(target);
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!");
UniquePtr<uint8_t> zeroBuffer((uint8_t*)calloc(size, 1));
if (!zeroBuffer)
return ErrorOutOfMemory("bufferData: out of memory");
MakeContextCurrent();
InvalidateBufferFetching();
GLenum error = CheckedBufferData(target, size, zeroBuffer.get(), usage);
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::DisableVertexAttribArray(GLuint index)
{
if (IsContextLost())
return;
if (!ValidateAttribIndex(index, "disableVertexAttribArray"))
return;
MakeContextCurrent();
InvalidateBufferFetching();
if (index || !gl->IsCompatibilityProfile()) {
gl->fDisableVertexAttribArray(index);
}
MOZ_ASSERT(mBoundVertexArray);
mBoundVertexArray->mAttribs[index].mEnabled = false;
}
void
WebGLContext::BufferDataT(GLenum target,
const BufferT& data,
GLenum usage)
{
if (IsContextLost())
return;
if (!ValidateBufferTarget(target, "bufferData"))
return;
const WebGLRefPtr<WebGLBuffer>& bufferSlot = GetBufferSlotByTarget(target);
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::VertexAttribDivisor(GLuint index, GLuint divisor)
{
if (IsContextLost())
return;
if (!ValidateAttribIndex(index, "vertexAttribDivisor"))
return;
MOZ_ASSERT(mBoundVertexArray);
WebGLVertexAttribData& vd = mBoundVertexArray->mAttribs[index];
vd.mDivisor = divisor;
InvalidateBufferFetching();
MakeContextCurrent();
gl->fVertexAttribDivisor(index, divisor);
}
void
WebGLContext::VertexAttribAnyPointer(const char* funcName, bool isFuncInt, GLuint index,
GLint size, GLenum type, bool normalized,
GLsizei stride, WebGLintptr byteOffset)
{
if (IsContextLost())
return;
if (!ValidateAttribIndex(index, funcName))
return;
////
if (size < 1 || size > 4) {
ErrorInvalidValue("%s: invalid element size", funcName);
return;
}
// see WebGL spec section 6.6 "Vertex Attribute Data Stride"
if (stride < 0 || stride > 255) {
ErrorInvalidValue("%s: negative or too large stride", funcName);
return;
}
if (byteOffset < 0) {
ErrorInvalidValue("%s: negative offset", funcName);
return;
}
////
bool isTypeValid = true;
uint8_t typeAlignment;
switch (type) {
// WebGL 1:
case LOCAL_GL_BYTE:
case LOCAL_GL_UNSIGNED_BYTE:
typeAlignment = 1;
break;
case LOCAL_GL_SHORT:
case LOCAL_GL_UNSIGNED_SHORT:
typeAlignment = 2;
break;
case LOCAL_GL_FLOAT:
if (isFuncInt) {
isTypeValid = false;
}
typeAlignment = 4;
break;
// WebGL 2:
case LOCAL_GL_INT:
case LOCAL_GL_UNSIGNED_INT:
if (!IsWebGL2()) {
isTypeValid = false;
}
typeAlignment = 4;
break;
case LOCAL_GL_HALF_FLOAT:
if (isFuncInt || !IsWebGL2()) {
isTypeValid = false;
}
typeAlignment = 2;
break;
case LOCAL_GL_FIXED:
if (isFuncInt || !IsWebGL2()) {
isTypeValid = false;
}
typeAlignment = 4;
break;
case LOCAL_GL_INT_2_10_10_10_REV:
case LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV:
if (isFuncInt || !IsWebGL2()) {
isTypeValid = false;
break;
}
if (size != 4) {
ErrorInvalidOperation("%s: size must be 4 for this type.", funcName);
return;
}
typeAlignment = 4;
break;
default:
isTypeValid = false;
break;
}
if (!isTypeValid) {
ErrorInvalidEnumArg(funcName, "type", type);
return;
}
////
// `alignment` should always be a power of two.
MOZ_ASSERT(IsPowerOfTwo(typeAlignment));
const GLsizei typeAlignmentMask = typeAlignment - 1;
if (stride & typeAlignmentMask ||
byteOffset & typeAlignmentMask)
{
ErrorInvalidOperation("%s: `stride` and `byteOffset` must satisfy the alignment"
" requirement of `type`.",
funcName);
return;
}
////
const auto& buffer = mBoundArrayBuffer;
if (!buffer && byteOffset) {
ErrorInvalidOperation("%s: If ARRAY_BUFFER is null, byteOffset must be zero.",
funcName);
return;
}
////
gl->MakeCurrent();
if (isFuncInt) {
gl->fVertexAttribIPointer(index, size, type, stride,
reinterpret_cast<void*>(byteOffset));
} else {
gl->fVertexAttribPointer(index, size, type, normalized, stride,
reinterpret_cast<void*>(byteOffset));
}
WebGLVertexAttribData& vd = mBoundVertexArray->mAttribs[index];
vd.VertexAttribPointer(isFuncInt, buffer, size, type, normalized, stride, byteOffset);
InvalidateBufferFetching();
}