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Fix gles3 rendering on android studio emulator
Use a temporary framebuffer for screen copy from rendertarget to screen. This solves GLES3 rendering in android studio emulator (before this change there is just a black screen) Based on discussion in: https://github.com/godotengine/godot/issues/74828
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@ -300,12 +300,13 @@ void RasterizerGLES3::_blit_render_target_to_screen(RID p_render_target, Display
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}
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GLuint read_fbo = 0;
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glGenFramebuffers(1, &read_fbo);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, read_fbo);
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if (rt->view_count > 1) {
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glGenFramebuffers(1, &read_fbo);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, read_fbo);
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glFramebufferTextureLayer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, rt->color, 0, p_layer);
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} else {
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glBindFramebuffer(GL_READ_FRAMEBUFFER, rt->fbo);
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glFramebufferTexture2D(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, rt->color, 0);
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}
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glReadBuffer(GL_COLOR_ATTACHMENT0);
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