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Diffstat (limited to 'src/loader/loader_dri3_helper.h')
| -rw-r--r-- | src/loader/loader_dri3_helper.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/src/loader/loader_dri3_helper.h b/src/loader/loader_dri3_helper.h new file mode 100644 index 0000000..54c2a52 --- /dev/null +++ b/src/loader/loader_dri3_helper.h @@ -0,0 +1,232 @@ +/* + * Copyright © 2013 Keith Packard + * Copyright © 2015 Boyan Ding + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#ifndef LOADER_DRI3_HEADER_H +#define LOADER_DRI3_HEADER_H + +#include <stdbool.h> +#include <stdint.h> + +#include <xcb/xcb.h> +#include <xcb/present.h> + +#include <GL/gl.h> +#include <GL/internal/dri_interface.h> + +enum loader_dri3_buffer_type { + loader_dri3_buffer_back = 0, + loader_dri3_buffer_front = 1 +}; + +struct loader_dri3_buffer { + __DRIimage *image; + __DRIimage *linear_buffer; + uint32_t pixmap; + + /* Synchronization between the client and X server is done using an + * xshmfence that is mapped into an X server SyncFence. This lets the + * client check whether the X server is done using a buffer with a simple + * xshmfence call, rather than going to read X events from the wire. + * + * However, we can only wait for one xshmfence to be triggered at a time, + * so we need to know *which* buffer is going to be idle next. We do that + * by waiting for a PresentIdleNotify event. When that event arrives, the + * 'busy' flag gets cleared and the client knows that the fence has been + * triggered, and that the wait call will not block. + */ + + uint32_t sync_fence; /* XID of X SyncFence object */ + struct xshmfence *shm_fence; /* pointer to xshmfence object */ + bool busy; /* Set on swap, cleared on IdleNotify */ + bool own_pixmap; /* We allocated the pixmap ID, free on destroy */ + + uint32_t size; + uint32_t pitch; + uint32_t cpp; + uint32_t flags; + uint32_t width, height; + uint64_t last_swap; + + enum loader_dri3_buffer_type buffer_type; +}; + + +#define LOADER_DRI3_MAX_BACK 4 +#define LOADER_DRI3_BACK_ID(i) (i) +#define LOADER_DRI3_FRONT_ID (LOADER_DRI3_MAX_BACK) + +static inline int +loader_dri3_pixmap_buf_id(enum loader_dri3_buffer_type buffer_type) +{ + if (buffer_type == loader_dri3_buffer_back) + return LOADER_DRI3_BACK_ID(0); + else + return LOADER_DRI3_FRONT_ID; +} + +struct loader_dri3_extensions { + const __DRIcoreExtension *core; + const __DRIimageDriverExtension *image_driver; + const __DRI2flushExtension *flush; + const __DRI2configQueryExtension *config; + const __DRItexBufferExtension *tex_buffer; + const __DRIimageExtension *image; +}; + +struct loader_dri3_drawable; + +struct loader_dri3_vtable { + int (*get_swap_interval)(struct loader_dri3_drawable *); + int (*clamp_swap_interval)(struct loader_dri3_drawable *, int); + void (*set_swap_interval)(struct loader_dri3_drawable *, int); + void (*set_drawable_size)(struct loader_dri3_drawable *, int, int); + bool (*in_current_context)(struct loader_dri3_drawable *); + __DRIcontext *(*get_dri_context)(struct loader_dri3_drawable *); + void (*flush_drawable)(struct loader_dri3_drawable *, unsigned); + void (*show_fps)(struct loader_dri3_drawable *, uint64_t); +}; + +#define LOADER_DRI3_NUM_BUFFERS (1 + LOADER_DRI3_MAX_BACK) + +struct loader_dri3_drawable { + xcb_connection_t *conn; + __DRIdrawable *dri_drawable; + xcb_drawable_t drawable; + int width; + int height; + int depth; + uint8_t have_back; + uint8_t have_fake_front; + uint8_t is_pixmap; + uint8_t flipping; + + /* Information about the GPU owning the buffer */ + __DRIscreen *dri_screen; + bool is_different_gpu; + + /* Present extension capabilities + */ + uint32_t present_capabilities; + + /* SBC numbers are tracked by using the serial numbers + * in the present request and complete events + */ + uint64_t send_sbc; + uint64_t recv_sbc; + + /* Last received UST/MSC values for pixmap present complete */ + uint64_t ust, msc; + + /* Last received UST/MSC values from present notify msc event */ + uint64_t notify_ust, notify_msc; + + /* Serial numbers for tracking wait_for_msc events */ + uint32_t send_msc_serial; + uint32_t recv_msc_serial; + + struct loader_dri3_buffer *buffers[LOADER_DRI3_NUM_BUFFERS]; + int cur_back; + int num_back; + + uint32_t *stamp; + + xcb_present_event_t eid; + xcb_gcontext_t gc; + xcb_special_event_t *special_event; + + bool first_init; + + struct loader_dri3_extensions *ext; + struct loader_dri3_vtable *vtable; +}; + +void +loader_dri3_set_swap_interval(struct loader_dri3_drawable *draw, + int interval); + +void +loader_dri3_drawable_fini(struct loader_dri3_drawable *draw); + +int +loader_dri3_drawable_init(xcb_connection_t *conn, + xcb_drawable_t drawable, + __DRIscreen *dri_screen, + bool is_different_gpu, + const __DRIconfig *dri_config, + struct loader_dri3_extensions *ext, + struct loader_dri3_vtable *vtable, + struct loader_dri3_drawable*); + +bool loader_dri3_wait_for_msc(struct loader_dri3_drawable *draw, + int64_t target_msc, + int64_t divisor, int64_t remainder, + int64_t *ust, int64_t *msc, int64_t *sbc); + +int64_t +loader_dri3_swap_buffers_msc(struct loader_dri3_drawable *draw, + int64_t target_msc, int64_t divisor, + int64_t remainder, unsigned flush_flags, + bool force_copy); + +int +loader_dri3_wait_for_sbc(struct loader_dri3_drawable *draw, + int64_t target_sbc, int64_t *ust, + int64_t *msc, int64_t *sbc); + +int loader_dri3_query_buffer_age(struct loader_dri3_drawable *draw); + +void +loader_dri3_flush(struct loader_dri3_drawable *draw, + unsigned flags, + enum __DRI2throttleReason throttle_reason); + +void +loader_dri3_copy_sub_buffer(struct loader_dri3_drawable *draw, + int x, int y, + int width, int height, + bool flush); + +void +loader_dri3_copy_drawable(struct loader_dri3_drawable *draw, + xcb_drawable_t dest, + xcb_drawable_t src); + +void +loader_dri3_wait_x(struct loader_dri3_drawable *draw); + +void +loader_dri3_wait_gl(struct loader_dri3_drawable *draw); + +int loader_dri3_open(xcb_connection_t *conn, + xcb_window_t root, + uint32_t provider); + +int +loader_dri3_get_buffers(__DRIdrawable *driDrawable, + unsigned int format, + uint32_t *stamp, + void *loaderPrivate, + uint32_t buffer_mask, + struct __DRIimageList *buffers); + +#endif |