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save and restore layers image when context is lost in Android

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This commit is contained in:
omigamedev
2017-04-29 21:30:40 +01:00
parent 2e47ccb0c6
commit fa49d9ee09
17 changed files with 210 additions and 69 deletions
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14
engine/rtt.cpp
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@@ -30,11 +30,12 @@ void RTT::destroy()
{
unbindFramebuffer();
glDeleteFramebuffers(1, &fboID);
LOG("RTT DESTROY %d", fboID);
}
fboID = 0;
rboID = 0;
w = 0;
h = 0;
// w = 0;
// h = 0;
}
bool RTT::create(int width, int height, int tex/* = -1*/)
@@ -74,6 +75,7 @@ bool RTT::create(int width, int height, int tex/* = -1*/)
// Create a framebuffer object
glGenFramebuffers(1, &fboID);
glBindFramebuffer(GL_FRAMEBUFFER, fboID);
LOG("RTT CREATE %d - tex %d", fboID, texID);
// Attach the texture to FBO color attachment point
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texID, 0);
@@ -136,10 +138,12 @@ void RTT::clear(glm::vec4 color)
void RTT::readTextureData(uint8_t* buffer)
{
bindTexture();
glReadBuffer(GL_BACK);
bindFramebuffer();
//glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_UNSIGNED_BYTE, buffer);
glReadPixels(0, 0, w, h, GL_RGB, GL_UNSIGNED_BYTE, buffer);
unbindTexture();
glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
unbindFramebuffer();
glReadBuffer(GL_NONE);
}
uint8_t* RTT::createBuffer()