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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"
#include "rsProgramFragment.h"
#include <GLES/gl.h>
#include <GLES/glext.h>
using namespace android;
using namespace android::renderscript;
ProgramFragment::ProgramFragment(Element *in, Element *out, bool pointSpriteEnable) :
Program(in, out)
{
for (uint32_t ct=0; ct < MAX_TEXTURE; ct++) {
mEnvModes[ct] = RS_TEX_ENV_MODE_REPLACE;
mTextureDimensions[ct] = 2;
}
mTextureEnableMask = 0;
mPointSpriteEnable = pointSpriteEnable;
mEnvModes[1] = RS_TEX_ENV_MODE_DECAL;
}
ProgramFragment::~ProgramFragment()
{
}
void ProgramFragment::setupGL(const Context *rsc, ProgramFragmentState *state)
{
if ((state->mLast.get() == this) && !mDirty) {
return;
}
state->mLast.set(this);
for (uint32_t ct=0; ct < MAX_TEXTURE; ct++) {
glActiveTexture(GL_TEXTURE0 + ct);
if (!(mTextureEnableMask & (1 << ct)) || !mTextures[ct].get()) {
glDisable(GL_TEXTURE_2D);
continue;
}
glEnable(GL_TEXTURE_2D);
if (rsc->checkVersion1_1()) {
glTexEnvi(GL_POINT_SPRITE_OES, GL_COORD_REPLACE_OES, mPointSpriteEnable);
}
glBindTexture(GL_TEXTURE_2D, mTextures[ct]->getTextureID());
switch(mEnvModes[ct]) {
case RS_TEX_ENV_MODE_REPLACE:
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
break;
case RS_TEX_ENV_MODE_MODULATE:
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
break;
case RS_TEX_ENV_MODE_DECAL:
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
break;
}
if (mSamplers[ct].get()) {
mSamplers[ct]->setupGL();
} else {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
}
// Gross hack.
if (ct == 2) {
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_ADD);
glTexEnvi(GL_TEXTURE_ENV, GL_SRC0_RGB, GL_PREVIOUS);
glTexEnvi(GL_TEXTURE_ENV, GL_SRC1_RGB, GL_TEXTURE);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR);
glTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_ADD);
glTexEnvi(GL_TEXTURE_ENV, GL_SRC0_ALPHA, GL_PREVIOUS);
glTexEnvi(GL_TEXTURE_ENV, GL_SRC1_ALPHA, GL_TEXTURE);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA);
glTexEnvi(GL_TEXTURE_ENV, GL_OPERAND1_ALPHA, GL_SRC_ALPHA);
}
}
glActiveTexture(GL_TEXTURE0);
mDirty = false;
}
void ProgramFragment::bindTexture(uint32_t slot, Allocation *a)
{
if (slot >= MAX_TEXTURE) {
LOGE("Attempt to bind a texture to a slot > MAX_TEXTURE");
return;
}
//LOGE("bindtex %i %p", slot, a);
mTextures[slot].set(a);
mDirty = true;
}
void ProgramFragment::bindSampler(uint32_t slot, Sampler *s)
{
if (slot >= MAX_TEXTURE) {
LOGE("Attempt to bind a Sampler to a slot > MAX_TEXTURE");
return;
}
mSamplers[slot].set(s);
mDirty = true;
}
void ProgramFragment::setType(uint32_t slot, const Element *e, uint32_t dim)
{
if (slot >= MAX_TEXTURE) {
LOGE("Attempt to setType to a slot > MAX_TEXTURE");
return;
}
if (dim >= 4) {
LOGE("Attempt to setType to a dimension > 3");
return;
}
mTextureFormats[slot].set(e);
mTextureDimensions[slot] = dim;
}
void ProgramFragment::setEnvMode(uint32_t slot, RsTexEnvMode env)
{
if (slot >= MAX_TEXTURE) {
LOGE("Attempt to setEnvMode to a slot > MAX_TEXTURE");
return;
}
mEnvModes[slot] = env;
}
void ProgramFragment::setTexEnable(uint32_t slot, bool enable)
{
if (slot >= MAX_TEXTURE) {
LOGE("Attempt to setEnvMode to a slot > MAX_TEXTURE");
return;
}
uint32_t bit = 1 << slot;
mTextureEnableMask &= ~bit;
if (enable) {
mTextureEnableMask |= bit;
}
}
ProgramFragmentState::ProgramFragmentState()
{
mPF = NULL;
}
ProgramFragmentState::~ProgramFragmentState()
{
delete mPF;
}
void ProgramFragmentState::init(Context *rsc, int32_t w, int32_t h)
{
ProgramFragment *pf = new ProgramFragment(NULL, NULL, false);
mDefault.set(pf);
}
namespace android {
namespace renderscript {
void rsi_ProgramFragmentBegin(Context * rsc, RsElement in, RsElement out, bool pointSpriteEnable)
{
delete rsc->mStateFragment.mPF;
rsc->mStateFragment.mPF = new ProgramFragment((Element *)in, (Element *)out, pointSpriteEnable);
}
void rsi_ProgramFragmentBindTexture(Context *rsc, RsProgramFragment vpf, uint32_t slot, RsAllocation a)
{
ProgramFragment *pf = static_cast<ProgramFragment *>(vpf);
pf->bindTexture(slot, static_cast<Allocation *>(a));
}
void rsi_ProgramFragmentBindSampler(Context *rsc, RsProgramFragment vpf, uint32_t slot, RsSampler s)
{
ProgramFragment *pf = static_cast<ProgramFragment *>(vpf);
pf->bindSampler(slot, static_cast<Sampler *>(s));
}
void rsi_ProgramFragmentSetSlot(Context *rsc, uint32_t slot, bool enable, RsTexEnvMode env, RsType vt)
{
const Type *t = static_cast<const Type *>(vt);
if (t) {
uint32_t dim = 1;
if (t->getDimY()) {
dim ++;
if (t->getDimZ()) {
dim ++;
}
}
rsc->mStateFragment.mPF->setType(slot, t->getElement(), dim);
}
rsc->mStateFragment.mPF->setEnvMode(slot, env);
rsc->mStateFragment.mPF->setTexEnable(slot, enable);
}
RsProgramFragment rsi_ProgramFragmentCreate(Context *rsc)
{
ProgramFragment *pf = rsc->mStateFragment.mPF;
pf->incUserRef();
rsc->mStateFragment.mPF = 0;
return pf;
}
}
}
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