wlroots-hyprland/include/wlr/render/gles2.h
Simon Ser e8b187cc92 render/gles2: save/restore context when creating/submitting a render pass
This is useful for e.g. lazily blitting a texture for readback
purposes while rendering.
2023-11-30 17:47:11 +01:00

54 lines
1.7 KiB
C

/*
* This an unstable interface of wlroots. No guarantees are made regarding the
* future consistency of this API.
*/
#ifndef WLR_USE_UNSTABLE
#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
#endif
#ifndef WLR_RENDER_GLES2_H
#define WLR_RENDER_GLES2_H
#include <GLES2/gl2.h>
#include <wlr/render/wlr_renderer.h>
struct wlr_egl;
/**
* OpenGL ES 2 renderer.
*
* Care must be taken to avoid stepping each other's toes with EGL contexts:
* the current EGL is global state. The GLES2 renderer operations will save
* and restore any previous EGL context when called. A render pass is seen as
* a single operation.
*
* The GLES2 renderer doesn't support arbitrarily nested render passes. It
* supports a subset only: after a nested render pass is created, any parent
* render pass can't be used before the nested render pass is submitted.
*/
struct wlr_renderer *wlr_gles2_renderer_create_with_drm_fd(int drm_fd);
struct wlr_renderer *wlr_gles2_renderer_create(struct wlr_egl *egl);
struct wlr_egl *wlr_gles2_renderer_get_egl(struct wlr_renderer *renderer);
bool wlr_gles2_renderer_check_ext(struct wlr_renderer *renderer,
const char *ext);
/**
* Returns the OpenGL FBO of current buffer.
*/
GLuint wlr_gles2_renderer_get_current_fbo(struct wlr_renderer *wlr_renderer);
struct wlr_gles2_texture_attribs {
GLenum target; /* either GL_TEXTURE_2D or GL_TEXTURE_EXTERNAL_OES */
GLuint tex;
bool has_alpha;
};
bool wlr_renderer_is_gles2(struct wlr_renderer *wlr_renderer);
bool wlr_render_timer_is_gles2(struct wlr_render_timer *timer);
bool wlr_texture_is_gles2(struct wlr_texture *texture);
void wlr_gles2_texture_get_attribs(struct wlr_texture *texture,
struct wlr_gles2_texture_attribs *attribs);
#endif