From: Ander Conselvan de Oliveira <ander.conselvan.de.olive...@intel.com>
---
src/egl/drivers/dri2/egl_dri2.h | 18 ++
src/egl/drivers/dri2/platform_drm.c | 342 ++++++++++++++++++++++++++++++++++-
src/gbm/backends/dri/gbm_dri.c | 62 ++++++-
src/gbm/backends/dri/gbm_driint.h | 1 +
4 files changed, 420 insertions(+), 3 deletions(-)
diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h
index 84ea0b6..fc31364 100644
--- a/src/egl/drivers/dri2/egl_dri2.h
+++ b/src/egl/drivers/dri2/egl_dri2.h
@@ -145,6 +145,15 @@ enum wayland_buffer_type {
};
#endif
+#ifdef HAVE_DRM_PLATFORM
+enum drm_buffer_type {
+ DRM_BUFFER_FRONT,
+ DRM_BUFFER_BACK,
+ DRM_BUFFER_THIRD,
+ DRM_BUFFER_COUNT
+};
+#endif
+
struct dri2_egl_surface
{
_EGLSurface base;
@@ -177,6 +186,15 @@ struct dri2_egl_surface
int format;
#endif
+#ifdef HAVE_DRM_PLATFORM
+ struct gbm_dri_surface *gbm_surf;
+ int drm_buffer_lock[DRM_BUFFER_COUNT];
+#ifndef HAVE_WAYLAND_PLATFORM
+ __DRIbuffer *dri_buffers[__DRI_BUFFER_COUNT];
+ __DRIbuffer *third_buffer;
+#endif
+#endif
+
#ifdef HAVE_ANDROID_PLATFORM
struct ANativeWindow *window;
struct ANativeWindowBuffer *buffer;
diff --git a/src/egl/drivers/dri2/platform_drm.c
b/src/egl/drivers/dri2/platform_drm.c
index bd3d1e0..b16bc42 100644
--- a/src/egl/drivers/dri2/platform_drm.c
+++ b/src/egl/drivers/dri2/platform_drm.c
@@ -37,6 +37,339 @@
#include "egl_dri2.h"
+static __DRIbuffer *
+get_front_buffer(struct gbm_dri_surface *surf, void *data)
+{
+ struct dri2_egl_surface *dri2_surf = data;
+
+ (void) surf;
+
+ dri2_surf->drm_buffer_lock[DRM_BUFFER_FRONT]++;
+ return dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT];
+}
+
+static void
+release_buffer(struct gbm_dri_surface *surf, __DRIbuffer *buffer, void *data)
+{
+ struct dri2_egl_surface *dri2_surf = data;
+
+ if (buffer == NULL)
+ return;
+
+ if (buffer == dri2_surf->third_buffer)
+ dri2_surf->drm_buffer_lock[DRM_BUFFER_THIRD]--;
+ else if (buffer->attachment == __DRI_BUFFER_FRONT_LEFT)
+ dri2_surf->drm_buffer_lock[DRM_BUFFER_FRONT]--;
+ else if (buffer->attachment == __DRI_BUFFER_BACK_LEFT)
+ dri2_surf->drm_buffer_lock[DRM_BUFFER_BACK]--;
+
+}
+
+static _EGLSurface *
+dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
+ _EGLConfig *conf, EGLNativeWindowType window,
+ const EGLint *attrib_list)
+{
+ struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+ struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
+ struct dri2_egl_surface *dri2_surf;
+ struct dri2_egl_buffer *dri2_buf;
+ struct gbm_dri_surface *surf;
+ int i;
+
+ (void) drv;
+
+ dri2_surf = malloc(sizeof *dri2_surf);
+ if (!dri2_surf) {
+ _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
+ return NULL;
+ }
+
+ if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
+ goto cleanup_surf;
+
+ for (i = 0; i < __DRI_BUFFER_COUNT; ++i)
+ dri2_surf->dri_buffers[i] = NULL;
+
+ dri2_surf->third_buffer = NULL;
+
+ switch (type) {
+ case EGL_WINDOW_BIT:
+ surf = gbm_dri_surface((struct gbm_surface *) window);
+ dri2_surf->gbm_surf = surf;
+
+ dri2_surf->base.Width = surf->base.width;
+ dri2_surf->base.Height = surf->base.height;
+
+ surf->get_front_buffer = get_front_buffer;
+ surf->release_buffer = release_buffer;
+ surf->dri_private = dri2_surf;
+
+ break;
+ default:
+ goto cleanup_surf;
+ }
+
+ dri2_surf->dri_drawable =
+ (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
+ dri2_conf->dri_double_config,
+ dri2_surf->gbm_surf);
+
+ if (dri2_surf->dri_drawable == NULL) {
+ _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
+ goto cleanup_surf;
+ }
+
+ return &dri2_surf->base;
+
+ cleanup_surf:
+ free(dri2_surf);
+
+ return NULL;
+}
+
+static _EGLSurface *
+dri2_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
+ _EGLConfig *conf, EGLNativeWindowType window,
+ const EGLint *attrib_list)
+{
+ return dri2_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
+ window, attrib_list);
+}
+
+static EGLBoolean
+dri2_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
+{
+ struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+ struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
+ int i;
+
+ if (!_eglPutSurface(surf))
+ return EGL_TRUE;
+
+ (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
+
+ for (i = 0; i < __DRI_BUFFER_COUNT; i++)
+ if (dri2_surf->dri_buffers[i])
+ dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
+ dri2_surf->dri_buffers[i]);
+
+ free(surf);
+
+ return EGL_TRUE;
+}
+
+static void
+dri2_process_back_buffer(struct dri2_egl_surface *dri2_surf, unsigned format)
+{
+ struct dri2_egl_display *dri2_dpy =
+ dri2_egl_display(dri2_surf->base.Resource.Display);
+
+ (void) format;
+
+ switch (dri2_surf->base.Type) {
+ case EGL_WINDOW_BIT:
+ /* allocate a front buffer for our double-buffered window*/
+ if (dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT] != NULL)
+ break;
+ dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT] =
+ dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
+ __DRI_BUFFER_FRONT_LEFT, format,
+ dri2_surf->base.Width, dri2_surf->base.Height);
+ break;
+ default:
+ break;
+ }
+}
+
+static inline void
+pointer_swap(const void **p1, const void **p2)
+{
+ const void *tmp = *p1;
+ *p1 = *p2;
+ *p2 = tmp;
+}
+
+static void
+destroy_third_buffer(struct dri2_egl_surface *dri2_surf)
+{
+ struct dri2_egl_display *dri2_dpy =
+ dri2_egl_display(dri2_surf->base.Resource.Display);
+
+ if (dri2_surf->third_buffer == NULL)
+ return;
+
+ dri2_dpy->dri2->releaseBuffer(dri2_dpy->dri_screen,
+ dri2_surf->third_buffer);
+ dri2_surf->third_buffer = NULL;
+ dri2_surf->drm_buffer_lock[DRM_BUFFER_THIRD] = 0;
+}
+
+static void
+swap_drm_buffers(struct dri2_egl_surface *dri2_surf,
+ enum drm_buffer_type a, enum drm_buffer_type b)
+{
+ int tmp;
+
+ tmp = dri2_surf->drm_buffer_lock[a];
+ dri2_surf->drm_buffer_lock[a] = dri2_surf->drm_buffer_lock[b];
+ dri2_surf->drm_buffer_lock[b] = tmp;
+}
+
+static void
+swap_back_and_third(struct dri2_egl_surface *dri2_surf)
+{
+ if (dri2_surf->drm_buffer_lock[DRM_BUFFER_THIRD])
+ destroy_third_buffer(dri2_surf);
+
+ pointer_swap((const void **)
&dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT],
+ (const void **) &dri2_surf->third_buffer);
+
+ swap_drm_buffers(dri2_surf, DRM_BUFFER_BACK, DRM_BUFFER_THIRD);
+}
+
+static void
+dri2_prior_buffer_creation(struct dri2_egl_surface *dri2_surf,
+ unsigned int type)
+{
+ switch (type) {
+ case __DRI_BUFFER_BACK_LEFT:
+ if (dri2_surf->drm_buffer_lock[DRM_BUFFER_BACK])
+ swap_back_and_third(dri2_surf);
+ else if (dri2_surf->third_buffer)
+ destroy_third_buffer(dri2_surf);
+ break;
+ default:
+ break;
+
+ }
+}
+
+static __DRIbuffer *
+dri2_get_buffers_with_format(__DRIdrawable * driDrawable,
+ int *width, int *height,
+ unsigned int *attachments, int count,
+ int *out_count, void *loaderPrivate)
+{
+ struct dri2_egl_surface *dri2_surf = loaderPrivate;
+ struct dri2_egl_display *dri2_dpy =
+ dri2_egl_display(dri2_surf->base.Resource.Display);
+ int i;
+
+ dri2_surf->buffer_count = 0;
+ for (i = 0; i < 2*count; i+=2) {
+ assert(attachments[i] < __DRI_BUFFER_COUNT);
+ assert(dri2_surf->buffer_count < 5);
+
+ dri2_prior_buffer_creation(dri2_surf, attachments[i]);
+
+ if (dri2_surf->dri_buffers[attachments[i]] == NULL) {
+
+ dri2_surf->dri_buffers[attachments[i]] =
+ dri2_dpy->dri2->allocateBuffer(dri2_dpy->dri_screen,
+ attachments[i], attachments[i+1],
+ dri2_surf->base.Width, dri2_surf->base.Height);
+
+ if (!dri2_surf->dri_buffers[attachments[i]])
+ continue;
+
+ if (attachments[i] == __DRI_BUFFER_BACK_LEFT)
+ dri2_process_back_buffer(dri2_surf, attachments[i+1]);
+ }
+
+ memcpy(&dri2_surf->buffers[dri2_surf->buffer_count],
+ dri2_surf->dri_buffers[attachments[i]],
+ sizeof(__DRIbuffer));
+
+ dri2_surf->buffer_count++;
+ }
+
+ assert(dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]);
+
+ *out_count = dri2_surf->buffer_count;
+ if (dri2_surf->buffer_count == 0)
+ return NULL;
+
+ *width = dri2_surf->base.Width;
+ *height = dri2_surf->base.Height;
+
+ return dri2_surf->buffers;
+}
+
+static __DRIbuffer *
+dri2_get_buffers(__DRIdrawable * driDrawable,
+ int *width, int *height,
+ unsigned int *attachments, int count,
+ int *out_count, void *loaderPrivate)
+{
+ unsigned int *attachments_with_format;
+ __DRIbuffer *buffer;
+ const unsigned int format = 32;
+ int i;
+
+ attachments_with_format = calloc(count * 2, sizeof(unsigned int));
+ if (!attachments_with_format) {
+ *out_count = 0;
+ return NULL;
+ }
+
+ for (i = 0; i < count; ++i) {
+ attachments_with_format[2*i] = attachments[i];
+ attachments_with_format[2*i + 1] = format;
+ }
+
+ buffer =
+ dri2_get_buffers_with_format(driDrawable,
+ width, height,
+ attachments_with_format, count,
+ out_count, loaderPrivate);
+
+ free(attachments_with_format);
+
+ return buffer;
+}
+
+static void
+dri2_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
+{
+ (void) driDrawable;
+ (void) loaderPrivate;
+}
+
+static EGLBoolean
+dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
+{
+ struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+ struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
+ struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
+
+ if (dri2_surf->base.Type == EGL_WINDOW_BIT) {
+ pointer_swap(
+ (const void **) &dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT],
+ (const void **) &dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]);
+
+ dri2_surf->dri_buffers[__DRI_BUFFER_FRONT_LEFT]->attachment =
+ __DRI_BUFFER_FRONT_LEFT;
+ dri2_surf->dri_buffers[__DRI_BUFFER_BACK_LEFT]->attachment =
+ __DRI_BUFFER_BACK_LEFT;
+
+ swap_drm_buffers(dri2_surf, DRM_BUFFER_FRONT, DRM_BUFFER_BACK);
+ }
+
+ _EGLContext *ctx;
+ if (dri2_drv->glFlush) {
+ ctx = _eglGetCurrentContext();
+ if (ctx && ctx->DrawSurface == &dri2_surf->base)
+ dri2_drv->glFlush();
+ }
+
+ (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
+ (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
+
+ return EGL_TRUE;
+}
+
+
static _EGLImage *
dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
EGLClientBuffer buffer, const EGLint *attr_list)
@@ -147,12 +480,19 @@ dri2_initialize_drm(_EGLDriver *drv, _EGLDisplay *disp)
dri2_dpy->gbm_dri->lookup_image = dri2_lookup_egl_image;
dri2_dpy->gbm_dri->lookup_user_data = disp;
+ dri2_dpy->gbm_dri->get_buffers = dri2_get_buffers;
+ dri2_dpy->gbm_dri->flush_front_buffer = dri2_flush_front_buffer;
+ dri2_dpy->gbm_dri->get_buffers_with_format = dri2_get_buffers_with_format;
+
dri2_setup_screen(disp);
for (i = 0; dri2_dpy->driver_configs[i]; i++)
dri2_add_config(disp, dri2_dpy->driver_configs[i],
- i + 1, 0, 0, NULL, NULL);
+ i + 1, 0, EGL_WINDOW_BIT, NULL, NULL);
+ drv->API.CreateWindowSurface = dri2_create_window_surface;
+ drv->API.DestroySurface = dri2_destroy_surface;
+ drv->API.SwapBuffers = dri2_swap_buffers;
drv->API.CreateImageKHR = dri2_drm_create_image_khr;
#ifdef HAVE_WAYLAND_PLATFORM
diff --git a/src/gbm/backends/dri/gbm_dri.c b/src/gbm/backends/dri/gbm_dri.c
index 9ac678a..6cc4aaa 100644
--- a/src/gbm/backends/dri/gbm_dri.c
+++ b/src/gbm/backends/dri/gbm_dri.c
@@ -467,18 +467,76 @@ gbm_dri_surface_destroy(struct gbm_surface *_surf)
static struct gbm_bo *
gbm_dri_surface_lock_front_buffer(struct gbm_surface *_surf)
{
- return NULL;
+ struct gbm_dri_device *dri = gbm_dri_device(_surf->gbm);
+ struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
+ struct gbm_dri_bo *bo;
+ __DRIbuffer *dri_buffer;
+ int dri_format = 0;
+
+ if (surf->get_front_buffer == NULL)
+ return NULL;
+
+ switch (_surf->format) {
+ case GBM_BO_FORMAT_XRGB8888:
+ case GBM_FORMAT_XRGB8888:
+ dri_format = __DRI_IMAGE_FORMAT_XRGB8888;
+ break;
+ case GBM_BO_FORMAT_ARGB8888:
+ case GBM_FORMAT_ARGB8888:
+ dri_format = __DRI_IMAGE_FORMAT_ARGB8888;
+ break;
+ default:
+ return NULL;
+ }
+
+ dri_buffer = surf->get_front_buffer(surf, surf->dri_private);
+ if (!dri_buffer)
+ return NULL;
+
+ bo = calloc(1, sizeof *bo);
+ if (bo == NULL)
+ return NULL;
+
+ bo->dri_buffer = dri_buffer;
+ bo->base.base.gbm = _surf->gbm;
+ bo->base.base.width = _surf->width;
+ bo->base.base.height = _surf->height;
+
+ bo->image =
+ dri->image->createImageFromName(dri->screen,
+ _surf->width, _surf->height, dri_format,
+ dri_buffer->name, dri_buffer->pitch / 4,
+ bo);
+
+ dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE,
+ &bo->base.base.handle.s32);
+ dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE,
+ (int *) &bo->base.base.pitch);
+
+ return &bo->base.base;
}
static void
gbm_dri_surface_release_buffer(struct gbm_surface *_surf, struct gbm_bo *_bo)
{
+ struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
+ struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
+
+ if (surf->release_buffer && bo->dri_buffer)
+ surf->release_buffer(surf, bo->dri_buffer, surf->dri_private);
+
+ gbm_dri_bo_destroy(_bo);
}
static int
gbm_dri_surface_has_free_buffers(struct gbm_surface *_surf)
{
- return 0;
+ struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
+
+ if (surf->has_free_buffers && surf->has_free_buffers(surf->dri_private))
+ return 1;
+ else
+ return 0;
}
static void
diff --git a/src/gbm/backends/dri/gbm_driint.h
b/src/gbm/backends/dri/gbm_driint.h
index 3b7db65..786f36b 100644
--- a/src/gbm/backends/dri/gbm_driint.h
+++ b/src/gbm/backends/dri/gbm_driint.h
@@ -72,6 +72,7 @@ struct gbm_dri_bo {
struct gbm_drm_bo base;
__DRIimage *image;
+ __DRIbuffer *dri_buffer;
};
struct gbm_dri_surface {
--
1.7.9.1
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