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/*
* Copyright (C) 2011 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 "rsdCore.h"
#include "rsdProgramStore.h"
#include "rsContext.h"
#include "rsProgramStore.h"
#include <GLES/gl.h>
#include <GLES/glext.h>
using namespace android;
using namespace android::renderscript;
struct DrvProgramStore {
GLenum blendSrc;
GLenum blendDst;
bool blendEnable;
GLenum depthFunc;
bool depthTestEnable;
};
bool rsdProgramStoreInit(const Context *rsc, const ProgramStore *ps) {
DrvProgramStore *drv = (DrvProgramStore *)calloc(1, sizeof(DrvProgramStore));
if (drv == NULL) {
return false;
}
ps->mHal.drv = drv;
drv->depthTestEnable = true;
switch (ps->mHal.state.depthFunc) {
case RS_DEPTH_FUNC_ALWAYS:
drv->depthTestEnable = false;
drv->depthFunc = GL_ALWAYS;
break;
case RS_DEPTH_FUNC_LESS:
drv->depthFunc = GL_LESS;
break;
case RS_DEPTH_FUNC_LEQUAL:
drv->depthFunc = GL_LEQUAL;
break;
case RS_DEPTH_FUNC_GREATER:
drv->depthFunc = GL_GREATER;
break;
case RS_DEPTH_FUNC_GEQUAL:
drv->depthFunc = GL_GEQUAL;
break;
case RS_DEPTH_FUNC_EQUAL:
drv->depthFunc = GL_EQUAL;
break;
case RS_DEPTH_FUNC_NOTEQUAL:
drv->depthFunc = GL_NOTEQUAL;
break;
default:
LOGE("Unknown depth function.");
goto error;
}
drv->blendEnable = true;
if ((ps->mHal.state.blendSrc == RS_BLEND_SRC_ONE) &&
(ps->mHal.state.blendDst == RS_BLEND_DST_ZERO)) {
drv->blendEnable = false;
}
switch (ps->mHal.state.blendSrc) {
case RS_BLEND_SRC_ZERO:
drv->blendSrc = GL_ZERO;
break;
case RS_BLEND_SRC_ONE:
drv->blendSrc = GL_ONE;
break;
case RS_BLEND_SRC_DST_COLOR:
drv->blendSrc = GL_DST_COLOR;
break;
case RS_BLEND_SRC_ONE_MINUS_DST_COLOR:
drv->blendSrc = GL_ONE_MINUS_DST_COLOR;
break;
case RS_BLEND_SRC_SRC_ALPHA:
drv->blendSrc = GL_SRC_ALPHA;
break;
case RS_BLEND_SRC_ONE_MINUS_SRC_ALPHA:
drv->blendSrc = GL_ONE_MINUS_SRC_ALPHA;
break;
case RS_BLEND_SRC_DST_ALPHA:
drv->blendSrc = GL_DST_ALPHA;
break;
case RS_BLEND_SRC_ONE_MINUS_DST_ALPHA:
drv->blendSrc = GL_ONE_MINUS_DST_ALPHA;
break;
case RS_BLEND_SRC_SRC_ALPHA_SATURATE:
drv->blendSrc = GL_SRC_ALPHA_SATURATE;
break;
default:
rsc->setError(RS_ERROR_FATAL_DRIVER, "Unknown blend src mode.");
goto error;
}
switch (ps->mHal.state.blendDst) {
case RS_BLEND_DST_ZERO:
drv->blendDst = GL_ZERO;
break;
case RS_BLEND_DST_ONE:
drv->blendDst = GL_ONE;
break;
case RS_BLEND_DST_SRC_COLOR:
drv->blendDst = GL_SRC_COLOR;
break;
case RS_BLEND_DST_ONE_MINUS_SRC_COLOR:
drv->blendDst = GL_ONE_MINUS_SRC_COLOR;
break;
case RS_BLEND_DST_SRC_ALPHA:
drv->blendDst = GL_SRC_ALPHA;
break;
case RS_BLEND_DST_ONE_MINUS_SRC_ALPHA:
drv->blendDst = GL_ONE_MINUS_SRC_ALPHA;
break;
case RS_BLEND_DST_DST_ALPHA:
drv->blendDst = GL_DST_ALPHA;
break;
case RS_BLEND_DST_ONE_MINUS_DST_ALPHA:
drv->blendDst = GL_ONE_MINUS_DST_ALPHA;
break;
default:
rsc->setError(RS_ERROR_FATAL_DRIVER, "Unknown blend dst mode.");
goto error;
}
return true;
error:
free(drv);
ps->mHal.drv = NULL;
return false;
}
void rsdProgramStoreSetActive(const Context *rsc, const ProgramStore *ps) {
DrvProgramStore *drv = (DrvProgramStore *)ps->mHal.drv;
RSD_CALL_GL(glColorMask, ps->mHal.state.colorRWriteEnable,
ps->mHal.state.colorGWriteEnable,
ps->mHal.state.colorBWriteEnable,
ps->mHal.state.colorAWriteEnable);
if (drv->blendEnable) {
RSD_CALL_GL(glEnable, GL_BLEND);
RSD_CALL_GL(glBlendFunc, drv->blendSrc, drv->blendDst);
} else {
RSD_CALL_GL(glDisable, GL_BLEND);
}
if (rsc->mUserSurfaceConfig.depthMin > 0) {
RSD_CALL_GL(glDepthMask, ps->mHal.state.depthWriteEnable);
if (drv->depthTestEnable || ps->mHal.state.depthWriteEnable) {
RSD_CALL_GL(glEnable, GL_DEPTH_TEST);
RSD_CALL_GL(glDepthFunc, drv->depthFunc);
} else {
RSD_CALL_GL(glDisable, GL_DEPTH_TEST);
}
} else {
RSD_CALL_GL(glDepthMask, false);
RSD_CALL_GL(glDisable, GL_DEPTH_TEST);
}
/*
if (rsc->mUserSurfaceConfig.stencilMin > 0) {
} else {
glStencilMask(0);
glDisable(GL_STENCIL_TEST);
}
*/
if (ps->mHal.state.ditherEnable) {
RSD_CALL_GL(glEnable, GL_DITHER);
} else {
RSD_CALL_GL(glDisable, GL_DITHER);
}
}
void rsdProgramStoreDestroy(const Context *rsc, const ProgramStore *ps) {
free(ps->mHal.drv);
ps->mHal.drv = NULL;
}
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