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Use glBlitFramebuffer when available to blit framebuffer

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raven02 2014-05-09 22:01:30 +08:00 • committed by Henrik Rydgard
parent cf7229e05e
commit 68548856fd
1 changed files with 33 additions and 23 deletions
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56
GPU/GLES/Framebuffer.cpp
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@ -1236,8 +1236,7 @@ void FramebufferManager::ReadFramebufferToMemory(VirtualFramebuffer *vfb, bool s
}
}
// TODO: If glBlitFramebuffer is available, we can take a shortcut. If, in addition, the dimensions
// are the same, we can use glCopyImageSubData.
// TODO: If dimensions are the same, we can use glCopyImageSubData.
void FramebufferManager::BlitFramebuffer_(VirtualFramebuffer *dst, int dstX, int dstY, VirtualFramebuffer *src, int srcX, int srcY, int w, int h) {
if (!dst->fbo) {
ERROR_LOG_REPORT_ONCE(dstfbozero, SCEGE, "BlitFramebuffer_: dst->fbo == 0");
@ -1252,32 +1251,43 @@ void FramebufferManager::BlitFramebuffer_(VirtualFramebuffer *dst, int dstX, int
}
fbo_bind_as_render_target(dst->fbo);
fbo_bind_color_as_texture(src->fbo, 0);
// glCheckFramebufferStatus should only be called at creation time. Here it's just silly - we just bound a draw buffer above.
#if 0
if (glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
ERROR_LOG(SCEGE, "Incomplete target framebuffer, aborting blit");
fbo_unbind();
if (gl_extensions.FBO_ARB) {
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
}
return;
}
#ifndef USING_GLES2
if (gl_extensions.FBO_ARB) {
#else
if (gl_extensions.GLES3 || gl_extensions.NV_framebuffer_blit) {
#endif
// Make sure our 2D drawing program is ready. Compiles only if not already compiled.
CompileDraw2DProgram();
glstate.viewport.set(0, 0, dst->width, dst->height);
DisableState();
#ifdef MAY_HAVE_GLES3
fbo_bind_for_read(src->fbo);
if (gl_extensions.GLES3) {
glBlitFramebuffer(0, src->renderHeight, src->renderWidth, 0, 0, 0, dst->width, dst->height, GL_COLOR_BUFFER_BIT, GL_NEAREST);
}
#if defined(ANDROID) // We only support this extension on Android, it's not even available on PC.
else if (gl_extensions.NV_framebuffer_blit) {
glBlitFramebufferNV(0, src->renderHeight, src->renderWidth, 0, 0, 0, dst->width, dst->height, GL_COLOR_BUFFER_BIT, GL_NEAREST);
}
#endif // defined(ANDROID)
// The first four coordinates are relative to the 6th and 7th arguments of DrawActiveTexture.
// Should maybe revamp that interface.
float srcW = src->width;
float srcH = src->height;
DrawActiveTexture(0, dstX, dstY, w, h, dst->width, dst->height, false, srcX / srcW, srcY / srcH, (srcX + w) / srcW, (srcY + h) / srcH, draw2dprogram_);
} else {
fbo_bind_color_as_texture(src->fbo, 0);
// Make sure our 2D drawing program is ready. Compiles only if not already compiled.
CompileDraw2DProgram();
glstate.viewport.set(0, 0, dst->width, dst->height);
DisableState();
// The first four coordinates are relative to the 6th and 7th arguments of DrawActiveTexture.
// Should maybe revamp that interface.
float srcW = src->width;
float srcH = src->height;
DrawActiveTexture(0, dstX, dstY, w, h, dst->width, dst->height, false, srcX / srcW, srcY / srcH, (srcX + w) / srcW, (srcY + h) / srcH, draw2dprogram_);
glBindTexture(GL_TEXTURE_2D, 0);
}
#endif // MAY_HAVE_GLES3
glBindTexture(GL_TEXTURE_2D, 0);
fbo_unbind();
}