310 lines
8.0 KiB
C++
310 lines
8.0 KiB
C++
/*
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** Copyright 2006, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include "context.h"
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#include "TextureObjectManager.h"
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namespace android {
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// ----------------------------------------------------------------------------
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EGLTextureObject::EGLTextureObject()
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: mCount(0), mSize(0)
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{
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init();
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}
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EGLTextureObject::~EGLTextureObject()
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{
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if (!direct) {
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if (mSize && surface.data)
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free(surface.data);
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if (mMipmaps)
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freeMipmaps();
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}
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}
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void EGLTextureObject::init()
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{
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memset(&surface, 0, sizeof(surface));
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surface.version = sizeof(surface);
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mMipmaps = 0;
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mNumExtraLod = 0;
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mIsComplete = false;
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wraps = GL_REPEAT;
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wrapt = GL_REPEAT;
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min_filter = GL_LINEAR;
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mag_filter = GL_LINEAR;
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internalformat = 0;
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memset(crop_rect, 0, sizeof(crop_rect));
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generate_mipmap = GL_FALSE;
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direct = GL_FALSE;
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}
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void EGLTextureObject::copyParameters(const sp<EGLTextureObject>& old)
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{
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wraps = old->wraps;
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wrapt = old->wrapt;
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min_filter = old->min_filter;
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mag_filter = old->mag_filter;
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memcpy(crop_rect, old->crop_rect, sizeof(crop_rect));
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generate_mipmap = old->generate_mipmap;
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direct = old->direct;
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}
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status_t EGLTextureObject::allocateMipmaps()
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{
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// here, by construction, mMipmaps=0 && mNumExtraLod=0
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if (!surface.data)
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return NO_INIT;
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int w = surface.width;
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int h = surface.height;
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const int numLods = 31 - gglClz(max(w,h));
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if (numLods <= 0)
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return NO_ERROR;
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mMipmaps = (GGLSurface*)malloc(numLods * sizeof(GGLSurface));
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if (!mMipmaps)
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return NO_MEMORY;
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memset(mMipmaps, 0, numLods * sizeof(GGLSurface));
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mNumExtraLod = numLods;
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return NO_ERROR;
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}
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void EGLTextureObject::freeMipmaps()
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{
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if (mMipmaps) {
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for (int i=0 ; i<mNumExtraLod ; i++) {
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if (mMipmaps[i].data) {
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free(mMipmaps[i].data);
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}
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}
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free(mMipmaps);
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mMipmaps = 0;
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mNumExtraLod = 0;
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}
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}
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const GGLSurface& EGLTextureObject::mip(int lod) const
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{
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if (lod<=0 || !mMipmaps)
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return surface;
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lod = min(lod-1, mNumExtraLod-1);
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return mMipmaps[lod];
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}
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GGLSurface& EGLTextureObject::editMip(int lod)
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{
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return const_cast<GGLSurface&>(mip(lod));
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}
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status_t EGLTextureObject::setSurface(GGLSurface const* s)
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{
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// XXX: glFlush() on 's'
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if (mSize && surface.data) {
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free(surface.data);
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}
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surface = *s;
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internalformat = 0;
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// we should keep the crop_rect, but it's delicate because
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// the new size of the surface could make it invalid.
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// so for now, we just loose it.
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memset(crop_rect, 0, sizeof(crop_rect));
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// it would be nice if we could keep the generate_mipmap flag,
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// we would have to generate them right now though.
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generate_mipmap = GL_FALSE;
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direct = GL_TRUE;
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mSize = 0; // we don't own this surface
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if (mMipmaps)
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freeMipmaps();
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mIsComplete = true;
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return NO_ERROR;
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}
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status_t EGLTextureObject::reallocate(
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GLint level, int w, int h, int s,
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int format, int compressedFormat, int bpr)
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{
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const size_t size = h * bpr;
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if (level == 0)
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{
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if (size!=mSize || !surface.data) {
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if (mSize && surface.data) {
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free(surface.data);
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}
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surface.data = (GGLubyte*)malloc(size);
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if (!surface.data) {
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mSize = 0;
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mIsComplete = false;
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return NO_MEMORY;
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}
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mSize = size;
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}
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surface.version = sizeof(GGLSurface);
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surface.width = w;
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surface.height = h;
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surface.stride = s;
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surface.format = format;
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surface.compressedFormat = compressedFormat;
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if (mMipmaps)
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freeMipmaps();
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mIsComplete = true;
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}
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else
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{
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if (!mMipmaps) {
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if (allocateMipmaps() != NO_ERROR)
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return NO_MEMORY;
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}
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LOGW_IF(level-1 >= mNumExtraLod,
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"specifying mipmap level %d, but # of level is %d",
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level, mNumExtraLod+1);
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GGLSurface& mipmap = editMip(level);
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if (mipmap.data)
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free(mipmap.data);
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mipmap.data = (GGLubyte*)malloc(size);
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if (!mipmap.data) {
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memset(&mipmap, 0, sizeof(GGLSurface));
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mIsComplete = false;
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return NO_MEMORY;
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}
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mipmap.version = sizeof(GGLSurface);
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mipmap.width = w;
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mipmap.height = h;
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mipmap.stride = s;
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mipmap.format = format;
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mipmap.compressedFormat = compressedFormat;
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// check if the texture is complete
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mIsComplete = true;
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const GGLSurface* prev = &surface;
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for (int i=0 ; i<mNumExtraLod ; i++) {
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const GGLSurface* curr = mMipmaps + i;
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if (curr->format != surface.format) {
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mIsComplete = false;
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break;
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}
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uint32_t w = (prev->width >> 1) ? : 1;
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uint32_t h = (prev->height >> 1) ? : 1;
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if (w != curr->width || h != curr->height) {
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mIsComplete = false;
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break;
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}
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prev = curr;
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}
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}
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return NO_ERROR;
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}
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// ----------------------------------------------------------------------------
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EGLSurfaceManager::EGLSurfaceManager()
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: TokenManager(), mCount(0)
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{
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}
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EGLSurfaceManager::~EGLSurfaceManager()
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{
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// everything gets freed automatically here...
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}
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sp<EGLTextureObject> EGLSurfaceManager::createTexture(GLuint name)
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{
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sp<EGLTextureObject> result;
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Mutex::Autolock _l(mLock);
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if (mTextures.indexOfKey(name) >= 0)
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return result; // already exists!
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result = new EGLTextureObject();
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status_t err = mTextures.add(name, result);
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if (err < 0)
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result.clear();
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return result;
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}
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sp<EGLTextureObject> EGLSurfaceManager::removeTexture(GLuint name)
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{
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Mutex::Autolock _l(mLock);
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const ssize_t index = mTextures.indexOfKey(name);
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if (index >= 0) {
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sp<EGLTextureObject> result(mTextures.valueAt(index));
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mTextures.removeItemsAt(index);
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return result;
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}
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return 0;
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}
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sp<EGLTextureObject> EGLSurfaceManager::replaceTexture(GLuint name)
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{
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sp<EGLTextureObject> tex;
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Mutex::Autolock _l(mLock);
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const ssize_t index = mTextures.indexOfKey(name);
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if (index >= 0) {
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const sp<EGLTextureObject>& old = mTextures.valueAt(index);
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const uint32_t refs = old->getStrongCount();
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if (ggl_likely(refs == 1)) {
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// we're the only owner
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tex = old;
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} else {
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// keep the texture's parameters
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tex = new EGLTextureObject();
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tex->copyParameters(old);
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mTextures.removeItemsAt(index);
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mTextures.add(name, tex);
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}
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}
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return tex;
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}
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void EGLSurfaceManager::deleteTextures(GLsizei n, const GLuint *tokens)
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{
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// free all textures
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Mutex::Autolock _l(mLock);
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for (GLsizei i=0 ; i<n ; i++) {
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const GLuint t(*tokens++);
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if (t) {
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mTextures.removeItem(t);
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}
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}
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}
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sp<EGLTextureObject> EGLSurfaceManager::texture(GLuint name)
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{
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Mutex::Autolock _l(mLock);
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const ssize_t index = mTextures.indexOfKey(name);
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if (index >= 0)
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return mTextures.valueAt(index);
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return 0;
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}
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// ----------------------------------------------------------------------------
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}; // namespace android
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