4e6af749d5
The modules here are only built when BUILD_EMULATOR_OPENGL is defined to true in your environment or your BoardConfig.mk (see tools/emulator/opengl/Android.mk) Change-Id: I5f32c35b4452fb5a7b4d5f9fc5870ec1da6032e6
317 lines
9.0 KiB
C++
317 lines
9.0 KiB
C++
/*
|
|
* 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 "WindowSurface.h"
|
|
#include "FBConfig.h"
|
|
#include "FrameBuffer.h"
|
|
#include <GLES/glext.h>
|
|
#include "EGLDispatch.h"
|
|
#include "GLDispatch.h"
|
|
#include "GL2Dispatch.h"
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "GLErrorLog.h"
|
|
|
|
WindowSurface::WindowSurface() :
|
|
m_fbObj(0),
|
|
m_depthRB(0),
|
|
m_stencilRB(0),
|
|
m_eglSurface(NULL),
|
|
m_attachedColorBuffer(NULL),
|
|
m_readContext(NULL),
|
|
m_drawContext(NULL),
|
|
m_width(0),
|
|
m_height(0),
|
|
m_pbufWidth(0),
|
|
m_pbufHeight(0)
|
|
{
|
|
}
|
|
|
|
WindowSurface::~WindowSurface()
|
|
{
|
|
s_egl.eglDestroySurface(FrameBuffer::getFB()->getDisplay(), m_eglSurface);
|
|
}
|
|
|
|
WindowSurface *WindowSurface::create(int p_config, int p_width, int p_height)
|
|
{
|
|
const FBConfig *fbconf = FBConfig::get(p_config);
|
|
if (!fbconf) {
|
|
return NULL;
|
|
}
|
|
|
|
// allocate space for the WindowSurface object
|
|
WindowSurface *win = new WindowSurface();
|
|
if (!win) {
|
|
return NULL;
|
|
}
|
|
win->m_fbconf = fbconf;
|
|
|
|
FrameBuffer *fb = FrameBuffer::getFB();
|
|
const FrameBufferCaps &caps = fb->getCaps();
|
|
|
|
//
|
|
// Create a pbuffer to be used as the egl surface
|
|
// for that window.
|
|
//
|
|
if (!win->resizePbuffer(p_width, p_height)) {
|
|
delete win;
|
|
return NULL;
|
|
}
|
|
|
|
win->m_width = p_width;
|
|
win->m_height = p_height;
|
|
|
|
return win;
|
|
}
|
|
|
|
//
|
|
// flushColorBuffer - The function makes sure that the
|
|
// previous attached color buffer is updated, if copy or blit should be done
|
|
// in order to update it - it is being done here.
|
|
//
|
|
void WindowSurface::flushColorBuffer()
|
|
{
|
|
if (m_attachedColorBuffer.Ptr() != NULL) {
|
|
|
|
//copyToColorBuffer();
|
|
blitToColorBuffer();
|
|
}
|
|
}
|
|
|
|
//
|
|
// setColorBuffer - this function is called when a new color buffer needs to
|
|
// be attached to the surface. The function doesn't make sure that the
|
|
// previous attached color buffer is updated, this is done by flushColorBuffer
|
|
//
|
|
void WindowSurface::setColorBuffer(ColorBufferPtr p_colorBuffer)
|
|
{
|
|
m_attachedColorBuffer = p_colorBuffer;
|
|
|
|
//
|
|
// resize the window if the attached color buffer is of different
|
|
// size
|
|
//
|
|
unsigned int cbWidth = m_attachedColorBuffer->getWidth();
|
|
unsigned int cbHeight = m_attachedColorBuffer->getHeight();
|
|
|
|
if (cbWidth != m_width || cbHeight != m_height) {
|
|
|
|
if (m_pbufWidth && m_pbufHeight) {
|
|
// if we use pbuffer, need to resize it
|
|
resizePbuffer(cbWidth, cbHeight);
|
|
}
|
|
|
|
m_width = cbWidth;
|
|
m_height = cbHeight;
|
|
}
|
|
}
|
|
|
|
//
|
|
// This function is called after the context and eglSurface is already
|
|
// bound in the current thread (eglMakeCurrent has been called).
|
|
// This function should take actions required on the other surface objects
|
|
// when being bind/unbound
|
|
//
|
|
void WindowSurface::bind(RenderContextPtr p_ctx, SurfaceBindType p_bindType)
|
|
{
|
|
if (p_bindType == SURFACE_BIND_READ) {
|
|
m_readContext = p_ctx;
|
|
}
|
|
else if (p_bindType == SURFACE_BIND_DRAW) {
|
|
m_drawContext = p_ctx;
|
|
}
|
|
else if (p_bindType == SURFACE_BIND_READDRAW) {
|
|
m_readContext = p_ctx;
|
|
m_drawContext = p_ctx;
|
|
}
|
|
else {
|
|
return; // bad param
|
|
}
|
|
|
|
}
|
|
|
|
void WindowSurface::copyToColorBuffer()
|
|
{
|
|
if (!m_width && !m_height) return;
|
|
|
|
if (m_attachedColorBuffer->getWidth() != m_width ||
|
|
m_attachedColorBuffer->getHeight() != m_height) {
|
|
// XXX: should never happen - how this needs to be handled?
|
|
return;
|
|
}
|
|
|
|
void *data = m_xferBuffer.alloc(m_width * m_height * 4);
|
|
if (!data) {
|
|
fprintf(stderr,"WARNING: Failed to copy buffer data - OutOfMemory\n");
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Make the surface current
|
|
//
|
|
EGLContext prevContext = s_egl.eglGetCurrentContext();
|
|
EGLSurface prevReadSurf = s_egl.eglGetCurrentSurface(EGL_READ);
|
|
EGLSurface prevDrawSurf = s_egl.eglGetCurrentSurface(EGL_DRAW);
|
|
FrameBuffer *fb = FrameBuffer::getFB();
|
|
if (!s_egl.eglMakeCurrent(fb->getDisplay(), m_eglSurface,
|
|
m_eglSurface, m_drawContext->getEGLContext())) {
|
|
return;
|
|
}
|
|
|
|
if (m_drawContext->isGL2()) {
|
|
#ifdef WITH_GLES2
|
|
s_gl2.glPixelStorei(GL_PACK_ALIGNMENT, 1);
|
|
s_gl2.glReadPixels(0, 0, m_width, m_height,
|
|
GL_RGBA, GL_UNSIGNED_BYTE, data);
|
|
#else
|
|
return; // should never happen, context cannot be GL2 in this case.
|
|
#endif
|
|
}
|
|
else {
|
|
s_gl.glPixelStorei(GL_PACK_ALIGNMENT, 1);
|
|
s_gl.glReadPixels(0, 0, m_width, m_height,
|
|
GL_RGBA, GL_UNSIGNED_BYTE, data);
|
|
}
|
|
|
|
//
|
|
// XXX: for some reason flipping the image is not required on
|
|
// Mac. Need to find the reason, currently unkbown.
|
|
//
|
|
#ifndef __APPLE__
|
|
#define FLIP_BUFFER 1
|
|
#endif
|
|
|
|
#if FLIP_BUFFER
|
|
//We need to flip the pixels
|
|
int bpp = 4;
|
|
void *tmpBuf = m_xUpdateBuf.alloc(m_width * m_height * bpp);
|
|
|
|
int dst_line_len = m_width * bpp;
|
|
int src_line_len = m_width * bpp;
|
|
char *src = (char *)data;
|
|
char *dst = (char*)tmpBuf + (m_height-1)*dst_line_len;
|
|
for (uint32_t y=0; y<m_height; y++) {
|
|
memcpy(dst, src, dst_line_len);
|
|
src += src_line_len;
|
|
dst -= dst_line_len;
|
|
}
|
|
// update the attached color buffer with the fliped readback pixels
|
|
m_attachedColorBuffer->update(GL_RGBA, GL_UNSIGNED_BYTE, tmpBuf);
|
|
#else
|
|
// update the attached color buffer with the readback pixels
|
|
m_attachedColorBuffer->update(GL_RGBA, GL_UNSIGNED_BYTE, data);
|
|
#endif
|
|
|
|
// restore current context/surface
|
|
s_egl.eglMakeCurrent(fb->getDisplay(), prevDrawSurf,
|
|
prevReadSurf, prevContext);
|
|
|
|
}
|
|
|
|
void WindowSurface::blitToColorBuffer()
|
|
{
|
|
if (!m_width && !m_height) return;
|
|
|
|
if (m_attachedColorBuffer->getWidth() != m_width ||
|
|
m_attachedColorBuffer->getHeight() != m_height) {
|
|
// XXX: should never happen - how this needs to be handled?
|
|
return;
|
|
}
|
|
|
|
//
|
|
// Make the surface current
|
|
//
|
|
EGLContext prevContext = s_egl.eglGetCurrentContext();
|
|
EGLSurface prevReadSurf = s_egl.eglGetCurrentSurface(EGL_READ);
|
|
EGLSurface prevDrawSurf = s_egl.eglGetCurrentSurface(EGL_DRAW);
|
|
FrameBuffer *fb = FrameBuffer::getFB();
|
|
if (!s_egl.eglMakeCurrent(fb->getDisplay(), m_eglSurface,
|
|
m_eglSurface, m_drawContext->getEGLContext())) {
|
|
return;
|
|
}
|
|
|
|
m_attachedColorBuffer->blitFromCurrentReadBuffer();
|
|
|
|
// restore current context/surface
|
|
s_egl.eglMakeCurrent(fb->getDisplay(), prevDrawSurf,
|
|
prevReadSurf, prevContext);
|
|
|
|
}
|
|
|
|
bool WindowSurface::resizePbuffer(unsigned int p_width, unsigned int p_height)
|
|
{
|
|
if (m_eglSurface &&
|
|
m_pbufWidth == p_width &&
|
|
m_pbufHeight == p_height) {
|
|
// no need to resize
|
|
return true;
|
|
}
|
|
|
|
FrameBuffer *fb = FrameBuffer::getFB();
|
|
|
|
EGLContext prevContext = s_egl.eglGetCurrentContext();
|
|
EGLSurface prevReadSurf = s_egl.eglGetCurrentSurface(EGL_READ);
|
|
EGLSurface prevDrawSurf = s_egl.eglGetCurrentSurface(EGL_DRAW);
|
|
EGLSurface prevPbuf = m_eglSurface;
|
|
bool needRebindContext = m_eglSurface &&
|
|
(prevReadSurf == m_eglSurface ||
|
|
prevDrawSurf == m_eglSurface);
|
|
|
|
if (needRebindContext) {
|
|
s_egl.eglMakeCurrent(fb->getDisplay(), EGL_NO_SURFACE,
|
|
EGL_NO_SURFACE, EGL_NO_CONTEXT);
|
|
}
|
|
|
|
//
|
|
// Destroy previous surface
|
|
//
|
|
if (m_eglSurface) {
|
|
s_egl.eglDestroySurface(fb->getDisplay(), m_eglSurface);
|
|
m_eglSurface = NULL;
|
|
}
|
|
|
|
const FrameBufferCaps &caps = fb->getCaps();
|
|
|
|
//
|
|
// Create pbuffer surface.
|
|
//
|
|
EGLint pbufAttribs[5];
|
|
pbufAttribs[0] = EGL_WIDTH;
|
|
pbufAttribs[1] = p_width;
|
|
pbufAttribs[2] = EGL_HEIGHT;
|
|
pbufAttribs[3] = p_height;
|
|
pbufAttribs[4] = EGL_NONE;
|
|
|
|
m_eglSurface = s_egl.eglCreatePbufferSurface(fb->getDisplay(),
|
|
m_fbconf->getEGLConfig(),
|
|
pbufAttribs);
|
|
if (m_eglSurface == EGL_NO_SURFACE) {
|
|
fprintf(stderr, "Renderer error: failed to create/resize pbuffer!!\n");
|
|
return false;
|
|
}
|
|
|
|
m_pbufWidth = p_width;
|
|
m_pbufHeight = p_height;
|
|
|
|
if (needRebindContext) {
|
|
s_egl.eglMakeCurrent(fb->getDisplay(),
|
|
(prevDrawSurf==prevPbuf) ? m_eglSurface : prevDrawSurf,
|
|
(prevReadSurf==prevPbuf) ? m_eglSurface : prevReadSurf,
|
|
prevContext);
|
|
}
|
|
|
|
return true;
|
|
}
|