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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 <GLES/gl.h>
#include <GLES/glext.h>
#include "rsContext.h"
#include "rsSampler.h"
using namespace android;
using namespace android::renderscript;
Sampler::Sampler(Context *rsc) : ObjectBase(rsc)
{
mAllocFile = __FILE__;
mAllocLine = __LINE__;
// Should not get called.
rsAssert(0);
}
Sampler::Sampler(Context *rsc,
RsSamplerValue magFilter,
RsSamplerValue minFilter,
RsSamplerValue wrapS,
RsSamplerValue wrapT,
RsSamplerValue wrapR) : ObjectBase(rsc)
{
mAllocFile = __FILE__;
mAllocLine = __LINE__;
mMagFilter = magFilter;
mMinFilter = minFilter;
mWrapS = wrapS;
mWrapT = wrapT;
mWrapR = wrapR;
}
Sampler::~Sampler()
{
}
void Sampler::setupGL(const Context *rsc, bool npot)
{
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
};
bool forceNonMip = false;
if (!rsc->ext_OES_texture_npot() && npot) {
forceNonMip = true;
}
if ((mMinFilter == RS_SAMPLER_LINEAR_MIP_LINEAR) && forceNonMip) {
if (rsc->ext_GL_IMG_texture_npot()) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
} else {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
}
} else {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, trans[mMinFilter]);
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, trans[mMagFilter]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, trans[mWrapS]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, trans[mWrapT]);
rsc->checkError("ProgramFragment::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 SamplerState::setupGL()
{
for (uint32_t ct=0; ct < RS_MAX_SAMPLER_SLOT; ct++) {
Sampler *s = mSamplers[ct].get();
if (s) {
s->setupGL(rsc);
} else {
glBindTexture(GL_TEXTURE_2D, 0);
}
}
}*/
////////////////////////////////
namespace android {
namespace renderscript {
void rsi_SamplerBegin(Context *rsc)
{
SamplerState * ss = &rsc->mStateSampler;
ss->mMagFilter = RS_SAMPLER_LINEAR;
ss->mMinFilter = RS_SAMPLER_LINEAR;
ss->mWrapS = RS_SAMPLER_WRAP;
ss->mWrapT = RS_SAMPLER_WRAP;
ss->mWrapR = RS_SAMPLER_WRAP;
}
void rsi_SamplerSet(Context *rsc, RsSamplerParam param, RsSamplerValue value)
{
SamplerState * ss = &rsc->mStateSampler;
switch(param) {
case RS_SAMPLER_MAG_FILTER:
ss->mMagFilter = value;
break;
case RS_SAMPLER_MIN_FILTER:
ss->mMinFilter = value;
break;
case RS_SAMPLER_WRAP_S:
ss->mWrapS = value;
break;
case RS_SAMPLER_WRAP_T:
ss->mWrapT = value;
break;
case RS_SAMPLER_WRAP_R:
ss->mWrapR = value;
break;
}
}
RsSampler rsi_SamplerCreate(Context *rsc)
{
SamplerState * ss = &rsc->mStateSampler;
Sampler * s = new Sampler(rsc,
ss->mMagFilter,
ss->mMinFilter,
ss->mWrapS,
ss->mWrapT,
ss->mWrapR);
s->incUserRef();
return s;
}
}}
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