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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "GLContext.h"
#include "WebGLVertexArray.h"
#include "WebGLVertexAttribData.h"
#include "mozilla/Casting.h"
namespace mozilla {
bool
WebGL2Context::ValidateAttribPointerType(bool integerMode, GLenum type,
uint32_t* out_alignment, const char* info)
{
MOZ_ASSERT(out_alignment);
switch (type) {
case LOCAL_GL_BYTE:
case LOCAL_GL_UNSIGNED_BYTE:
*out_alignment = 1;
return true;
case LOCAL_GL_SHORT:
case LOCAL_GL_UNSIGNED_SHORT:
*out_alignment = 2;
return true;
case LOCAL_GL_INT:
case LOCAL_GL_UNSIGNED_INT:
*out_alignment = 4;
return true;
}
if (!integerMode) {
switch (type) {
case LOCAL_GL_HALF_FLOAT:
*out_alignment = 2;
return true;
case LOCAL_GL_FLOAT:
case LOCAL_GL_FIXED:
case LOCAL_GL_INT_2_10_10_10_REV:
case LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV:
*out_alignment = 4;
return true;
}
}
ErrorInvalidEnum("%s: invalid enum value 0x%x", info, type);
return false;
}
// -------------------------------------------------------------------------
// Vertex Attributes
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);
InvalidateBufferFetching();
MakeContextCurrent();
gl->fVertexAttribIPointer(index, size, type, stride, reinterpret_cast<void*>(offset));
WebGLVertexAttribData& vd = mBoundVertexArray->mAttribs[index];
const bool integerFunc = true;
const bool normalized = false;
vd.VertexAttribPointer(integerFunc, mBoundArrayBuffer, size, type, normalized, stride,
offset);
}
} // namespace mozilla
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