#include <X11/Xlib-xcb.h>
+#include <c11/threads.h>
#include "loader_dri3_helper.h"
/* From xmlpool/options.h, user exposed so should be stable */
#define DRI_CONF_VBLANK_DEF_INTERVAL_1 2
#define DRI_CONF_VBLANK_ALWAYS_SYNC 3
+/**
+ * A cached blit context.
+ */
+struct loader_dri3_blit_context {
+ mtx_t mtx;
+ __DRIcontext *ctx;
+ __DRIscreen *cur_screen;
+ const __DRIcoreExtension *core;
+};
+
+/* For simplicity we maintain the cache only for a single screen at a time */
+static struct loader_dri3_blit_context blit_context = {
+ _MTX_INITIALIZER_NP, NULL
+};
+
+/**
+ * Do we have blit functionality in the image blit extension?
+ *
+ * \param draw[in] The drawable intended to blit from / to.
+ * \return true if we have blit functionality. false otherwise.
+ */
+static bool loader_dri3_have_image_blit(const struct loader_dri3_drawable *draw)
+{
+ return draw->ext->image->base.version >= 9 &&
+ draw->ext->image->blitImage != NULL;
+}
+
+/**
+ * Get and lock (for use with the current thread) a dri context associated
+ * with the drawable's dri screen. The context is intended to be used with
+ * the dri image extension's blitImage method.
+ *
+ * \param draw[in] Pointer to the drawable whose dri screen we want a
+ * dri context for.
+ * \return A dri context or NULL if context creation failed.
+ *
+ * When the caller is done with the context (even if the context returned was
+ * NULL), the caller must call loader_dri3_blit_context_put.
+ */
+static __DRIcontext *
+loader_dri3_blit_context_get(struct loader_dri3_drawable *draw)
+{
+ mtx_lock(&blit_context.mtx);
+
+ if (blit_context.ctx && blit_context.cur_screen != draw->dri_screen) {
+ blit_context.core->destroyContext(blit_context.ctx);
+ blit_context.ctx = NULL;
+ }
+
+ if (!blit_context.ctx) {
+ blit_context.ctx = draw->ext->core->createNewContext(draw->dri_screen,
+ NULL, NULL, NULL);
+ blit_context.cur_screen = draw->dri_screen;
+ blit_context.core = draw->ext->core;
+ }
+
+ return blit_context.ctx;
+}
+
+/**
+ * Release (for use with other threads) a dri context previously obtained using
+ * loader_dri3_blit_context_get.
+ */
+static void
+loader_dri3_blit_context_put(void)
+{
+ mtx_unlock(&blit_context.mtx);
+}
+
+/**
+ * Blit (parts of) the contents of a DRI image to another dri image
+ *
+ * \param draw[in] The drawable which owns the images.
+ * \param dst[in] The destination image.
+ * \param src[in] The source image.
+ * \param dstx0[in] Start destination coordinate.
+ * \param dsty0[in] Start destination coordinate.
+ * \param width[in] Blit width.
+ * \param height[in] Blit height.
+ * \param srcx0[in] Start source coordinate.
+ * \param srcy0[in] Start source coordinate.
+ * \param flush_flag[in] Image blit flush flag.
+ * \return true iff successful.
+ */
+static bool
+loader_dri3_blit_image(struct loader_dri3_drawable *draw,
+ __DRIimage *dst, __DRIimage *src,
+ int dstx0, int dsty0, int width, int height,
+ int srcx0, int srcy0, int flush_flag)
+{
+ __DRIcontext *dri_context;
+ bool use_blit_context = false;
+
+ if (!loader_dri3_have_image_blit(draw))
+ return false;
+
+ dri_context = draw->vtable->get_dri_context(draw);
+
+ if (!dri_context || !draw->vtable->in_current_context(draw)) {
+ dri_context = loader_dri3_blit_context_get(draw);
+ use_blit_context = true;
+ flush_flag |= __BLIT_FLAG_FLUSH;
+ }
+
+ if (dri_context)
+ draw->ext->image->blitImage(dri_context, dst, src, dstx0, dsty0,
+ width, height, srcx0, srcy0,
+ width, height, flush_flag);
+
+ if (use_blit_context)
+ loader_dri3_blit_context_put();
+
+ return dri_context != NULL;
+}
+
static inline void
dri3_fence_reset(xcb_connection_t *c, struct loader_dri3_buffer *buffer)
{
{
struct loader_dri3_buffer *back;
unsigned flags = __DRI2_FLUSH_DRAWABLE;
- __DRIcontext *dri_context;
-
- dri_context = draw->vtable->get_dri_context(draw);
/* Check we have the right attachments */
if (!draw->have_back || draw->is_pixmap)
back = dri3_back_buffer(draw);
y = draw->height - y - height;
- if (draw->is_different_gpu && draw->vtable->in_current_context(draw)) {
+ if (draw->is_different_gpu) {
/* Update the linear buffer part of the back buffer
* for the dri3_copy_area operation
*/
- draw->ext->image->blitImage(dri_context,
- back->linear_buffer,
- back->image,
- 0, 0, back->width,
- back->height,
- 0, 0, back->width,
- back->height, __BLIT_FLAG_FLUSH);
- /* We use blitImage to update our fake front,
+ (void) loader_dri3_blit_image(draw,
+ back->linear_buffer,
+ back->image,
+ 0, 0, back->width, back->height,
+ 0, 0, __BLIT_FLAG_FLUSH);
+ /* We use blit_image to update our fake front,
*/
if (draw->have_fake_front)
- draw->ext->image->blitImage(dri_context,
- dri3_fake_front_buffer(draw)->image,
- back->image,
- x, y, width, height,
- x, y, width, height, __BLIT_FLAG_FLUSH);
+ (void) loader_dri3_blit_image(draw,
+ dri3_fake_front_buffer(draw)->image,
+ back->image,
+ x, y, width, height,
+ x, y, __BLIT_FLAG_FLUSH);
}
loader_dri3_swapbuffer_barrier(draw);
loader_dri3_wait_x(struct loader_dri3_drawable *draw)
{
struct loader_dri3_buffer *front;
- __DRIcontext *dri_context;
if (draw == NULL || !draw->have_fake_front)
return;
front = dri3_fake_front_buffer(draw);
- dri_context = draw->vtable->get_dri_context(draw);
loader_dri3_copy_drawable(draw, front->pixmap, draw->drawable);
* Copy back to the tiled buffer we use for rendering.
* Note that we don't need flushing.
*/
- if (draw->is_different_gpu && draw->vtable->in_current_context(draw))
- draw->ext->image->blitImage(dri_context,
- front->image,
- front->linear_buffer,
- 0, 0, front->width,
- front->height,
- 0, 0, front->width,
- front->height, 0);
+ if (draw->is_different_gpu)
+ (void) loader_dri3_blit_image(draw,
+ front->image,
+ front->linear_buffer,
+ 0, 0, front->width, front->height,
+ 0, 0, 0);
}
void
loader_dri3_wait_gl(struct loader_dri3_drawable *draw)
{
struct loader_dri3_buffer *front;
- __DRIcontext *dri_context;
if (draw == NULL || !draw->have_fake_front)
return;
front = dri3_fake_front_buffer(draw);
- dri_context = draw->vtable->get_dri_context(draw);
/* In the psc->is_different_gpu case, we update the linear_buffer
* before updating the real front.
*/
- if (draw->is_different_gpu && draw->vtable->in_current_context(draw))
- draw->ext->image->blitImage(dri_context,
- front->linear_buffer,
- front->image,
- 0, 0, front->width,
- front->height,
- 0, 0, front->width,
- front->height, __BLIT_FLAG_FLUSH);
+ if (draw->is_different_gpu)
+ (void) loader_dri3_blit_image(draw,
+ front->linear_buffer,
+ front->image,
+ 0, 0, front->width, front->height,
+ 0, 0, __BLIT_FLAG_FLUSH);
loader_dri3_swapbuffer_barrier(draw);
loader_dri3_copy_drawable(draw, draw->drawable, front->pixmap);
}
bool force_copy)
{
struct loader_dri3_buffer *back;
- __DRIcontext *dri_context;
int64_t ret = 0;
uint32_t options = XCB_PRESENT_OPTION_NONE;
- dri_context = draw->vtable->get_dri_context(draw);
-
draw->vtable->flush_drawable(draw, flush_flags);
back = draw->buffers[dri3_find_back(draw)];
if (draw->is_different_gpu && back) {
/* Update the linear buffer before presenting the pixmap */
- draw->ext->image->blitImage(dri_context,
- back->linear_buffer,
- back->image,
- 0, 0, back->width,
- back->height,
- 0, 0, back->width,
- back->height, __BLIT_FLAG_FLUSH);
+ (void) loader_dri3_blit_image(draw,
+ back->linear_buffer,
+ back->image,
+ 0, 0, back->width, back->height,
+ 0, 0, __BLIT_FLAG_FLUSH);
/* Update the fake front */
if (draw->have_fake_front)
- draw->ext->image->blitImage(dri_context,
- draw->buffers[LOADER_DRI3_FRONT_ID]->image,
- back->image,
- 0, 0, draw->width, draw->height,
- 0, 0, draw->width, draw->height,
- __BLIT_FLAG_FLUSH);
+ (void) loader_dri3_blit_image(draw,
+ draw->buffers[LOADER_DRI3_FRONT_ID]->image,
+ back->image,
+ 0, 0, draw->width, draw->height,
+ 0, 0, __BLIT_FLAG_FLUSH);
}
dri3_flush_present_events(draw);
{
struct loader_dri3_buffer *buffer;
int buf_id;
- __DRIcontext *dri_context;
-
- dri_context = draw->vtable->get_dri_context(draw);
if (buffer_type == loader_dri3_buffer_back) {
buf_id = dri3_find_back(draw);
draw->width, draw->height);
dri3_fence_trigger(draw->conn, new_buffer);
} else if (draw->vtable->in_current_context(draw)) {
- draw->ext->image->blitImage(dri_context,
- new_buffer->image,
- buffer->image,
- 0, 0, draw->width, draw->height,
- 0, 0, draw->width, draw->height, 0);
+ (void) loader_dri3_blit_image(draw,
+ new_buffer->image,
+ buffer->image,
+ 0, 0, draw->width, draw->height,
+ 0, 0, 0);
}
dri3_free_render_buffer(draw, buffer);
}
if (new_buffer->linear_buffer &&
draw->vtable->in_current_context(draw)) {
dri3_fence_await(draw->conn, new_buffer);
- draw->ext->image->blitImage(dri_context,
- new_buffer->image,
- new_buffer->linear_buffer,
- 0, 0, draw->width, draw->height,
- 0, 0, draw->width, draw->height, 0);
+ (void) loader_dri3_blit_image(draw,
+ new_buffer->image,
+ new_buffer->linear_buffer,
+ 0, 0, draw->width, draw->height,
+ 0, 0, 0);
}
break;
}
(void) loader_dri3_wait_for_sbc(draw, 0, &ust, &msc, &sbc);
}
+
+/**
+ * Perform any cleanup associated with a close screen operation.
+ * \param dri_screen[in,out] Pointer to __DRIscreen about to be closed.
+ *
+ * This function destroys the screen's cached swap context if any.
+ */
+void
+loader_dri3_close_screen(__DRIscreen *dri_screen)
+{
+ mtx_lock(&blit_context.mtx);
+ if (blit_context.ctx && blit_context.cur_screen == dri_screen) {
+ blit_context.core->destroyContext(blit_context.ctx);
+ blit_context.ctx = NULL;
+ }
+ mtx_unlock(&blit_context.mtx);
+}
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