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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "rsContext.h"
#ifndef ANDROID_RS_SERIALIZE
#include <GLES/gl.h>
#include <GLES/glext.h>
#endif //ANDROID_RS_SERIALIZE
#include "rsSampler.h"
using namespace android;
using namespace android::renderscript;
Sampler::Sampler(Context *rsc) : ObjectBase(rsc) {
// Should not get called.
rsAssert(0);
}
Sampler::Sampler(Context *rsc,
RsSamplerValue magFilter,
RsSamplerValue minFilter,
RsSamplerValue wrapS,
RsSamplerValue wrapT,
RsSamplerValue wrapR,
float aniso) : ObjectBase(rsc) {
mHal.state.magFilter = magFilter;
mHal.state.minFilter = minFilter;
mHal.state.wrapS = wrapS;
mHal.state.wrapT = wrapT;
mHal.state.wrapR = wrapR;
mHal.state.aniso = aniso;
}
Sampler::~Sampler() {
}
void Sampler::setupGL(const Context *rsc, const Allocation *tex) {
GLenum trans[] = {
GL_NEAREST, //RS_SAMPLER_NEAREST,
GL_LINEAR, //RS_SAMPLER_LINEAR,
GL_LINEAR_MIPMAP_LINEAR, //RS_SAMPLER_LINEAR_MIP_LINEAR,
GL_REPEAT, //RS_SAMPLER_WRAP,
GL_CLAMP_TO_EDGE, //RS_SAMPLER_CLAMP
GL_LINEAR_MIPMAP_NEAREST, //RS_SAMPLER_LINEAR_MIP_NEAREST
};
GLenum transNP[] = {
GL_NEAREST, //RS_SAMPLER_NEAREST,
GL_LINEAR, //RS_SAMPLER_LINEAR,
GL_LINEAR, //RS_SAMPLER_LINEAR_MIP_LINEAR,
GL_CLAMP_TO_EDGE, //RS_SAMPLER_WRAP,
GL_CLAMP_TO_EDGE, //RS_SAMPLER_CLAMP
GL_LINEAR, //RS_SAMPLER_LINEAR_MIP_NEAREST,
};
// This tells us the correct texture type
GLenum target = (GLenum)tex->getGLTarget();
if (!rsc->ext_OES_texture_npot() && tex->getType()->getIsNp2()) {
if (tex->getHasGraphicsMipmaps() &&
(rsc->ext_GL_NV_texture_npot_2D_mipmap() || rsc->ext_GL_IMG_texture_npot())) {
if (rsc->ext_GL_NV_texture_npot_2D_mipmap()) {
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, trans[mHal.state.minFilter]);
} else {
switch (trans[mHal.state.minFilter]) {
case GL_LINEAR_MIPMAP_LINEAR:
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
break;
default:
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, trans[mHal.state.minFilter]);
break;
}
}
} else {
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, transNP[mHal.state.minFilter]);
}
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, transNP[mHal.state.magFilter]);
glTexParameteri(target, GL_TEXTURE_WRAP_S, transNP[mHal.state.wrapS]);
glTexParameteri(target, GL_TEXTURE_WRAP_T, transNP[mHal.state.wrapT]);
} else {
if (tex->getHasGraphicsMipmaps()) {
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, trans[mHal.state.minFilter]);
} else {
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, transNP[mHal.state.minFilter]);
}
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, trans[mHal.state.magFilter]);
glTexParameteri(target, GL_TEXTURE_WRAP_S, trans[mHal.state.wrapS]);
glTexParameteri(target, GL_TEXTURE_WRAP_T, trans[mHal.state.wrapT]);
}
float anisoValue = rsMin(rsc->ext_texture_max_aniso(), mHal.state.aniso);
if (rsc->ext_texture_max_aniso() > 1.0f) {
glTexParameterf(target, GL_TEXTURE_MAX_ANISOTROPY_EXT, anisoValue);
}
rsc->checkError("Sampler::setupGL2 tex env");
}
void Sampler::bindToContext(SamplerState *ss, uint32_t slot) {
ss->mSamplers[slot].set(this);
mBoundSlot = slot;
}
void Sampler::unbindFromContext(SamplerState *ss) {
int32_t slot = mBoundSlot;
mBoundSlot = -1;
ss->mSamplers[slot].clear();
}
void Sampler::serialize(OStream *stream) const {
}
Sampler *Sampler::createFromStream(Context *rsc, IStream *stream) {
return NULL;
}
////////////////////////////////
namespace android {
namespace renderscript {
RsSampler rsi_SamplerCreate(Context * rsc,
RsSamplerValue magFilter,
RsSamplerValue minFilter,
RsSamplerValue wrapS,
RsSamplerValue wrapT,
RsSamplerValue wrapR,
float aniso) {
Sampler * s = new Sampler(rsc, magFilter, minFilter, wrapS, wrapT, wrapR, aniso);
s->incUserRef();
return s;
}
}}
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