343 lines
11 KiB
C++
343 lines
11 KiB
C++
/*
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* Copyright (C) 2010 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 <stdlib.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/Log.h>
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#include <ui/GraphicBuffer.h>
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#include <GLES/gl.h>
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#include <GLES/glext.h>
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#include <hardware/hardware.h>
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#include "clz.h"
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#include "DisplayHardware/DisplayHardware.h"
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#include "GLExtensions.h"
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#include "TextureManager.h"
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namespace android {
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// ---------------------------------------------------------------------------
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TextureManager::TextureManager()
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: mGLExtensions(GLExtensions::getInstance())
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{
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}
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GLenum TextureManager::getTextureTarget(const Image* image) {
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#if defined(GL_OES_texture_external)
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switch (image->target) {
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case Texture::TEXTURE_EXTERNAL:
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return GL_TEXTURE_EXTERNAL_OES;
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}
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#endif
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return GL_TEXTURE_2D;
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}
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status_t TextureManager::initTexture(Texture* texture)
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{
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if (texture->name != -1UL)
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return INVALID_OPERATION;
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GLuint textureName = -1;
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glGenTextures(1, &textureName);
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texture->name = textureName;
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texture->width = 0;
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texture->height = 0;
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const GLenum target = GL_TEXTURE_2D;
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glBindTexture(target, textureName);
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glTexParameterx(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameterx(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glTexParameterx(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameterx(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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return NO_ERROR;
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}
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status_t TextureManager::initTexture(Image* pImage, int32_t format)
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{
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if (pImage->name != -1UL)
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return INVALID_OPERATION;
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GLuint textureName = -1;
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glGenTextures(1, &textureName);
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pImage->name = textureName;
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pImage->width = 0;
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pImage->height = 0;
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GLenum target = GL_TEXTURE_2D;
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#if defined(GL_OES_texture_external)
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if (GLExtensions::getInstance().haveTextureExternal()) {
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if (format && isYuvFormat(format)) {
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target = GL_TEXTURE_EXTERNAL_OES;
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pImage->target = Texture::TEXTURE_EXTERNAL;
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}
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}
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#endif
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glBindTexture(target, textureName);
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glTexParameterx(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameterx(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glTexParameterx(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameterx(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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return NO_ERROR;
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}
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bool TextureManager::isSupportedYuvFormat(int format)
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{
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switch (format) {
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case HAL_PIXEL_FORMAT_YV12:
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return true;
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}
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return false;
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}
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bool TextureManager::isYuvFormat(int format)
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{
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switch (format) {
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// supported YUV formats
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case HAL_PIXEL_FORMAT_YV12:
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// Legacy/deprecated YUV formats
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case HAL_PIXEL_FORMAT_YCbCr_422_SP:
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case HAL_PIXEL_FORMAT_YCrCb_420_SP:
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case HAL_PIXEL_FORMAT_YCbCr_422_I:
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case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
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return true;
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}
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// Any OEM format needs to be considered
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if (format>=0x100 && format<=0x1FF)
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return true;
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return false;
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}
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status_t TextureManager::initEglImage(Image* pImage,
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EGLDisplay dpy, const sp<GraphicBuffer>& buffer)
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{
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status_t err = NO_ERROR;
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if (!pImage->dirty) return err;
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// free the previous image
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if (pImage->image != EGL_NO_IMAGE_KHR) {
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eglDestroyImageKHR(dpy, pImage->image);
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pImage->image = EGL_NO_IMAGE_KHR;
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}
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// construct an EGL_NATIVE_BUFFER_ANDROID
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android_native_buffer_t* clientBuf = buffer->getNativeBuffer();
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// create the new EGLImageKHR
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const EGLint attrs[] = {
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EGL_IMAGE_PRESERVED_KHR, EGL_TRUE,
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EGL_NONE, EGL_NONE
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};
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pImage->image = eglCreateImageKHR(
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dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
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(EGLClientBuffer)clientBuf, attrs);
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if (pImage->image != EGL_NO_IMAGE_KHR) {
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if (pImage->name == -1UL) {
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initTexture(pImage, buffer->format);
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}
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const GLenum target = getTextureTarget(pImage);
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glBindTexture(target, pImage->name);
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glEGLImageTargetTexture2DOES(target, (GLeglImageOES)pImage->image);
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GLint error = glGetError();
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if (error != GL_NO_ERROR) {
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LOGE("glEGLImageTargetTexture2DOES(%p) failed err=0x%04x",
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pImage->image, error);
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err = INVALID_OPERATION;
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} else {
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// Everything went okay!
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pImage->dirty = false;
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pImage->width = clientBuf->width;
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pImage->height = clientBuf->height;
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}
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} else {
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LOGE("eglCreateImageKHR() failed. err=0x%4x", eglGetError());
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err = INVALID_OPERATION;
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}
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return err;
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}
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status_t TextureManager::loadTexture(Texture* texture,
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const Region& dirty, const GGLSurface& t)
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{
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if (texture->name == -1UL) {
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status_t err = initTexture(texture);
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LOGE_IF(err, "loadTexture failed in initTexture (%s)", strerror(err));
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return err;
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}
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if (texture->target != GL_TEXTURE_2D)
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return INVALID_OPERATION;
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glBindTexture(GL_TEXTURE_2D, texture->name);
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/*
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* In OpenGL ES we can't specify a stride with glTexImage2D (however,
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* GL_UNPACK_ALIGNMENT is a limited form of stride).
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* So if the stride here isn't representable with GL_UNPACK_ALIGNMENT, we
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* need to do something reasonable (here creating a bigger texture).
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*
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* extra pixels = (((stride - width) * pixelsize) / GL_UNPACK_ALIGNMENT);
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*
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* This situation doesn't happen often, but some h/w have a limitation
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* for their framebuffer (eg: must be multiple of 8 pixels), and
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* we need to take that into account when using these buffers as
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* textures.
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*
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* This should never be a problem with POT textures
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*/
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int unpack = __builtin_ctz(t.stride * bytesPerPixel(t.format));
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unpack = 1 << ((unpack > 3) ? 3 : unpack);
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glPixelStorei(GL_UNPACK_ALIGNMENT, unpack);
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/*
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* round to POT if needed
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*/
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if (!mGLExtensions.haveNpot()) {
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texture->NPOTAdjust = true;
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}
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if (texture->NPOTAdjust) {
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// find the smallest power-of-two that will accommodate our surface
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texture->potWidth = 1 << (31 - clz(t.width));
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texture->potHeight = 1 << (31 - clz(t.height));
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if (texture->potWidth < t.width) texture->potWidth <<= 1;
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if (texture->potHeight < t.height) texture->potHeight <<= 1;
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texture->wScale = float(t.width) / texture->potWidth;
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texture->hScale = float(t.height) / texture->potHeight;
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} else {
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texture->potWidth = t.width;
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texture->potHeight = t.height;
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}
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Rect bounds(dirty.bounds());
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GLvoid* data = 0;
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if (texture->width != t.width || texture->height != t.height) {
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texture->width = t.width;
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texture->height = t.height;
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// texture size changed, we need to create a new one
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bounds.set(Rect(t.width, t.height));
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if (t.width == texture->potWidth &&
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t.height == texture->potHeight) {
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// we can do it one pass
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data = t.data;
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}
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if (t.format == HAL_PIXEL_FORMAT_RGB_565) {
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glTexImage2D(GL_TEXTURE_2D, 0,
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GL_RGB, texture->potWidth, texture->potHeight, 0,
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GL_RGB, GL_UNSIGNED_SHORT_5_6_5, data);
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} else if (t.format == HAL_PIXEL_FORMAT_RGBA_4444) {
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glTexImage2D(GL_TEXTURE_2D, 0,
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GL_RGBA, texture->potWidth, texture->potHeight, 0,
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GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, data);
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} else if (t.format == HAL_PIXEL_FORMAT_RGBA_8888 ||
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t.format == HAL_PIXEL_FORMAT_RGBX_8888) {
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glTexImage2D(GL_TEXTURE_2D, 0,
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GL_RGBA, texture->potWidth, texture->potHeight, 0,
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GL_RGBA, GL_UNSIGNED_BYTE, data);
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} else if (isSupportedYuvFormat(t.format)) {
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// just show the Y plane of YUV buffers
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glTexImage2D(GL_TEXTURE_2D, 0,
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GL_LUMINANCE, texture->potWidth, texture->potHeight, 0,
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GL_LUMINANCE, GL_UNSIGNED_BYTE, data);
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} else {
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// oops, we don't handle this format!
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LOGE("texture=%d, using format %d, which is not "
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"supported by the GL", texture->name, t.format);
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}
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}
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if (!data) {
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if (t.format == HAL_PIXEL_FORMAT_RGB_565) {
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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0, bounds.top, t.width, bounds.height(),
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GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
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t.data + bounds.top*t.stride*2);
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} else if (t.format == HAL_PIXEL_FORMAT_RGBA_4444) {
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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0, bounds.top, t.width, bounds.height(),
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GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4,
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t.data + bounds.top*t.stride*2);
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} else if (t.format == HAL_PIXEL_FORMAT_RGBA_8888 ||
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t.format == HAL_PIXEL_FORMAT_RGBX_8888) {
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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0, bounds.top, t.width, bounds.height(),
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GL_RGBA, GL_UNSIGNED_BYTE,
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t.data + bounds.top*t.stride*4);
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} else if (isSupportedYuvFormat(t.format)) {
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// just show the Y plane of YUV buffers
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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0, bounds.top, t.width, bounds.height(),
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GL_LUMINANCE, GL_UNSIGNED_BYTE,
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t.data + bounds.top*t.stride);
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}
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}
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return NO_ERROR;
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}
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void TextureManager::activateTexture(const Texture& texture, bool filter)
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{
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const GLenum target = getTextureTarget(&texture);
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if (target == GL_TEXTURE_2D) {
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glBindTexture(GL_TEXTURE_2D, texture.name);
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glEnable(GL_TEXTURE_2D);
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#if defined(GL_OES_texture_external)
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if (GLExtensions::getInstance().haveTextureExternal()) {
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glDisable(GL_TEXTURE_EXTERNAL_OES);
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}
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} else {
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glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture.name);
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glEnable(GL_TEXTURE_EXTERNAL_OES);
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glDisable(GL_TEXTURE_2D);
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#endif
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}
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if (filter) {
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glTexParameterx(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameterx(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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} else {
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glTexParameterx(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameterx(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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}
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}
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void TextureManager::deactivateTextures()
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{
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glDisable(GL_TEXTURE_2D);
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#if defined(GL_OES_texture_external)
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if (GLExtensions::getInstance().haveTextureExternal()) {
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glDisable(GL_TEXTURE_EXTERNAL_OES);
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}
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#endif
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}
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// ---------------------------------------------------------------------------
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}; // namespace android
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