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/* -*- Mode: C++; tab-width: 20; 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 "WebGLSampler.h"
#include "GLContext.h"
#include "mozilla/dom/WebGL2RenderingContextBinding.h"
#include "WebGLContext.h"
namespace mozilla {
WebGLSampler::WebGLSampler(WebGLContext* const webgl)
: WebGLContextBoundObject(webgl), mGLName([&]() {
GLuint ret = 0;
webgl->gl->fGenSamplers(1, &ret);
return ret;
}()) {}
WebGLSampler::~WebGLSampler() {
if (!mContext) return;
mContext->gl->fDeleteSamplers(1, &mGLName);
}
static bool ValidateSamplerParameterParams(WebGLContext* webgl, GLenum pname,
const FloatOrInt& param) {
const auto& paramInt = param.i;
bool pnameValid = true;
switch (pname) {
case LOCAL_GL_TEXTURE_MIN_FILTER:
switch (paramInt) {
case LOCAL_GL_NEAREST:
case LOCAL_GL_LINEAR:
case LOCAL_GL_NEAREST_MIPMAP_NEAREST:
case LOCAL_GL_NEAREST_MIPMAP_LINEAR:
case LOCAL_GL_LINEAR_MIPMAP_NEAREST:
case LOCAL_GL_LINEAR_MIPMAP_LINEAR:
return true;
default:
break;
}
break;
case LOCAL_GL_TEXTURE_MAG_FILTER:
switch (paramInt) {
case LOCAL_GL_NEAREST:
case LOCAL_GL_LINEAR:
return true;
default:
break;
}
break;
case LOCAL_GL_TEXTURE_WRAP_S:
case LOCAL_GL_TEXTURE_WRAP_T:
case LOCAL_GL_TEXTURE_WRAP_R:
switch (paramInt) {
case LOCAL_GL_CLAMP_TO_EDGE:
case LOCAL_GL_REPEAT:
case LOCAL_GL_MIRRORED_REPEAT:
return true;
default:
break;
}
break;
case LOCAL_GL_TEXTURE_MIN_LOD:
case LOCAL_GL_TEXTURE_MAX_LOD:
return true;
case LOCAL_GL_TEXTURE_COMPARE_MODE:
switch (paramInt) {
case LOCAL_GL_NONE:
case LOCAL_GL_COMPARE_REF_TO_TEXTURE:
return true;
default:
break;
}
break;
case LOCAL_GL_TEXTURE_COMPARE_FUNC:
switch (paramInt) {
case LOCAL_GL_LEQUAL:
case LOCAL_GL_GEQUAL:
case LOCAL_GL_LESS:
case LOCAL_GL_GREATER:
case LOCAL_GL_EQUAL:
case LOCAL_GL_NOTEQUAL:
case LOCAL_GL_ALWAYS:
case LOCAL_GL_NEVER:
return true;
default:
break;
}
break;
case LOCAL_GL_TEXTURE_MAX_ANISOTROPY:
if (webgl->IsExtensionEnabled(
WebGLExtensionID::EXT_texture_filter_anisotropic)) {
return true;
}
pnameValid = false;
break;
default:
pnameValid = false;
break;
}
if (!pnameValid) {
webgl->ErrorInvalidEnumInfo("pname", pname);
return false;
}
webgl->ErrorInvalidEnumInfo("param", paramInt);
return false;
}
void WebGLSampler::SamplerParameter(GLenum pname, const FloatOrInt& param) {
if (!ValidateSamplerParameterParams(mContext, pname, param)) return;
bool invalidate = true;
switch (pname) {
case LOCAL_GL_TEXTURE_MIN_FILTER:
mState.minFilter = param.i;
break;
case LOCAL_GL_TEXTURE_MAG_FILTER:
mState.magFilter = param.i;
break;
case LOCAL_GL_TEXTURE_WRAP_S:
mState.wrapS = param.i;
break;
case LOCAL_GL_TEXTURE_WRAP_T:
mState.wrapT = param.i;
break;
case LOCAL_GL_TEXTURE_COMPARE_MODE:
mState.compareMode = param.i;
break;
default:
invalidate = false;
break;
}
if (invalidate) {
InvalidateCaches();
}
////
if (param.isFloat) {
mContext->gl->fSamplerParameterf(mGLName, pname, param.f);
} else {
mContext->gl->fSamplerParameteri(mGLName, pname, param.i);
}
}
} // namespace mozilla
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