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Implement ability to render viewports directly to screen

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This commit is contained in:
clayjohn
2019-05-08 11:25:34 -07:00
parent 86a74e2cb3
commit 65c211d303
18 changed files with 178 additions and 4 deletions
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26
drivers/gles2/rasterizer_canvas_gles2.cpp
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@ -113,9 +113,22 @@ void RasterizerCanvasGLES2::canvas_begin() {
state.canvas_shader.bind();
state.using_transparent_rt = false;
int viewport_x, viewport_y, viewport_width, viewport_height;
if (storage->frame.current_rt) {
glBindFramebuffer(GL_FRAMEBUFFER, storage->frame.current_rt->fbo);
state.using_transparent_rt = storage->frame.current_rt->flags[RasterizerStorage::RENDER_TARGET_TRANSPARENT];
if (storage->frame.current_rt->flags[RasterizerStorage::RENDER_TARGET_DIRECT_TO_SCREEN]) {
// set Viewport and Scissor when rendering directly to screen
viewport_width = storage->frame.current_rt->width;
viewport_height = storage->frame.current_rt->height;
viewport_x = storage->frame.current_rt->x;
viewport_y = OS::get_singleton()->get_window_size().height - viewport_height - storage->frame.current_rt->y;
glScissor(viewport_x, viewport_y, viewport_width, viewport_height);
glViewport(viewport_x, viewport_y, viewport_width, viewport_height);
glEnable(GL_SCISSOR_TEST);
}
}
if (storage->frame.clear_request) {
@ -179,6 +192,14 @@ void RasterizerCanvasGLES2::canvas_end() {
glDisableVertexAttribArray(i);
}
if (storage->frame.current_rt && storage->frame.current_rt->flags[RasterizerStorage::RENDER_TARGET_DIRECT_TO_SCREEN]) {
//reset viewport to full window size
int viewport_width = OS::get_singleton()->get_window_size().width;
int viewport_height = OS::get_singleton()->get_window_size().height;
glViewport(0, 0, viewport_width, viewport_height);
glScissor(0, 0, viewport_width, viewport_height);
}
state.using_texture_rect = false;
state.using_skeleton = false;
state.using_ninepatch = false;
@ -1192,6 +1213,11 @@ void RasterizerCanvasGLES2::_canvas_item_render_commands(Item *p_item, Item *cur
void RasterizerCanvasGLES2::_copy_screen(const Rect2 &p_rect) {
if (storage->frame.current_rt->flags[RasterizerStorage::RENDER_TARGET_DIRECT_TO_SCREEN]) {
ERR_PRINT_ONCE("Cannot use screen texture copying in render target set to render direct to screen");
return;
}
if (storage->frame.current_rt->copy_screen_effect.color == 0) {
ERR_EXPLAIN("Can't use screen texture copying in a render target configured without copy buffers");
ERR_FAIL();