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kms: Use GBM surfaces

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Instead of creating FBOs on the GL side, the KMS EGL platform uses the
latest changes to Mesa to create an EGL surface using a GBM surface as
the native surface type. This removes some of the special vtable hooks
that the KMS platform needed because it is now much more similar to
the other platforms.

Reviewed-by: Robert Bragg <robert@linux.intel.com>
This commit is contained in:
Neil Roberts 2011-12-19 15:37:26 +00:00
parent cc4c578887
commit d1d2120a91
3 changed files with 74 additions and 170 deletions
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218
cogl/winsys/cogl-winsys-egl-kms.c
View File

@ -50,6 +50,8 @@
static const CoglWinsysEGLVtable _cogl_winsys_egl_vtable;
static const CoglWinsysVtable *parent_vtable;
typedef struct _CoglRendererKMS
{
int fd;
@ -67,11 +69,11 @@ typedef struct _CoglDisplayKMS
typedef struct _CoglOnscreenKMS
{
uint32_t fb_id[2];
struct gbm_bo *bo[2];
unsigned int fb, color_rb[2], depth_rb;
EGLImageKHR image[2];
int current_frame;
struct gbm_surface *surface;
uint32_t current_fb_id;
uint32_t next_fb_id;
struct gbm_bo *current_bo;
struct gbm_bo *next_bo;
} CoglOnscreenKMS;
static const char device_name[] = "/dev/dri/card0";
@ -257,27 +259,13 @@ _cogl_winsys_egl_display_destroy (CoglDisplay *display)
}
static gboolean
_cogl_winsys_egl_try_create_context (CoglDisplay *display,
EGLint *attribs,
_cogl_winsys_egl_context_created (CoglDisplay *display,
GError **error)
{
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglDisplayEGL *egl_display = display->winsys;
egl_display->egl_context = eglCreateContext (egl_renderer->edpy,
NULL,
EGL_NO_CONTEXT,
attribs);
if (egl_display->egl_context == NULL)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Couldn't create EGL context");
return FALSE;
}
if (!eglMakeCurrent (egl_renderer->edpy,
EGL_NO_SURFACE,
EGL_NO_SURFACE,
@ -329,33 +317,39 @@ _cogl_winsys_onscreen_swap_buffers (CoglOnscreen *onscreen)
CoglRendererKMS *kms_renderer = egl_renderer->platform;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen = egl_onscreen->platform;
struct gbm_bo *next_bo;
EGLint handle, pitch;
uint32_t next_fb_id;
/* First chain-up. This will call eglSwapBuffers */
parent_vtable->onscreen_swap_buffers (onscreen);
/* Now we need to set the CRTC to whatever is the front buffer */
next_bo = gbm_surface_lock_front_buffer (kms_onscreen->surface);
pitch = gbm_bo_get_pitch (next_bo);
handle = gbm_bo_get_handle (next_bo).u32;
if (drmModeAddFB (kms_renderer->fd,
kms_display->width,
kms_display->height,
24, /* depth */
32, /* bpp */
pitch,
handle,
&next_fb_id) == 0)
{
if (drmModeSetCrtc (kms_renderer->fd,
kms_display->encoder->crtc_id,
kms_onscreen->fb_id[kms_onscreen->current_frame],
0, 0,
next_fb_id,
0, 0, /* x, y */
&kms_display->connector->connector_id,
1,
1, /* count */
&kms_display->mode) != 0)
{
g_error (G_STRLOC ": Setting CRTC failed");
}
/* Update frame that we're drawing to be the new one */
kms_onscreen->current_frame ^= 1;
context->glBindFramebuffer (GL_FRAMEBUFFER_EXT, kms_onscreen->fb);
context->glFramebufferRenderbuffer (GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT,
kms_onscreen->
color_rb[kms_onscreen->current_frame]);
if (context->glCheckFramebufferStatus (GL_FRAMEBUFFER_EXT) !=
GL_FRAMEBUFFER_COMPLETE)
{
g_error (G_STRLOC ": FBO not complete");
}
gbm_surface_release_buffer (kms_onscreen->surface, next_bo);
}
static gboolean
@ -372,7 +366,6 @@ _cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
CoglRendererKMS *kms_renderer = egl_renderer->platform;
CoglOnscreenEGL *egl_onscreen;
CoglOnscreenKMS *kms_onscreen;
int i;
_COGL_RETURN_VAL_IF_FAIL (egl_display->egl_context, FALSE);
@ -382,82 +375,35 @@ _cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
kms_onscreen = g_slice_new0 (CoglOnscreenKMS);
egl_onscreen->platform = kms_onscreen;
context->glGenRenderbuffers (2, kms_onscreen->color_rb);
for (i = 0; i < 2; i++)
{
uint32_t handle, stride;
kms_onscreen->bo[i] =
gbm_bo_create (kms_renderer->gbm,
kms_display->mode.hdisplay, kms_display->mode.vdisplay,
GBM_BO_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
if (!kms_onscreen->bo[i])
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to allocate buffer");
return FALSE;
}
kms_onscreen->image[i] =
_cogl_egl_create_image (context,
EGL_NATIVE_PIXMAP_KHR,
kms_onscreen->bo[i],
NULL);
if (kms_onscreen->image[i] == EGL_NO_IMAGE_KHR)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to create EGL image");
return FALSE;
}
context->glBindRenderbuffer (GL_RENDERBUFFER_EXT,
kms_onscreen->color_rb[i]);
context->glEGLImageTargetRenderbufferStorage (GL_RENDERBUFFER,
kms_onscreen->image[i]);
context->glBindRenderbuffer (GL_RENDERBUFFER_EXT, 0);
handle = gbm_bo_get_handle (kms_onscreen->bo[i]).u32;
stride = gbm_bo_get_pitch (kms_onscreen->bo[i]);
if (drmModeAddFB (kms_renderer->fd,
kms_onscreen->surface =
gbm_surface_create (kms_renderer->gbm,
kms_display->mode.hdisplay,
kms_display->mode.vdisplay,
24, 32,
stride,
handle,
&kms_onscreen->fb_id[i]) != 0)
GBM_BO_FORMAT_XRGB8888,
GBM_BO_USE_SCANOUT |
GBM_BO_USE_RENDERING);
if (!kms_onscreen->surface)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to create framebuffer from buffer");
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Failed to allocate surface");
return FALSE;
}
egl_onscreen->egl_surface =
eglCreateWindowSurface (egl_renderer->edpy,
egl_display->egl_config,
(NativeWindowType) kms_onscreen->surface,
NULL);
if (egl_onscreen->egl_surface == EGL_NO_SURFACE)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Failed to allocate surface");
return FALSE;
}
context->glGenFramebuffers (1, &kms_onscreen->fb);
context->glBindFramebuffer (GL_FRAMEBUFFER_EXT, kms_onscreen->fb);
context->glGenRenderbuffers (1, &kms_onscreen->depth_rb);
context->glBindRenderbuffer (GL_RENDERBUFFER_EXT, kms_onscreen->depth_rb);
context->glRenderbufferStorage (GL_RENDERBUFFER_EXT,
GL_DEPTH_COMPONENT16,
kms_display->mode.hdisplay,
kms_display->mode.vdisplay);
context->glBindRenderbuffer (GL_RENDERBUFFER_EXT, 0);
context->glFramebufferRenderbuffer (GL_FRAMEBUFFER_EXT,
GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT,
kms_onscreen->depth_rb);
kms_onscreen->current_frame = 0;
_cogl_winsys_onscreen_swap_buffers (onscreen);
_cogl_framebuffer_winsys_update_size (framebuffer,
kms_display->width,
kms_display->height);
@ -472,10 +418,8 @@ _cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
CoglContext *context = framebuffer->context;
CoglRenderer *renderer = context->display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererKMS *kms_renderer = egl_renderer->platform;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenKMS *kms_onscreen;
int i;
/* If we never successfully allocated then there's nothing to do */
if (egl_onscreen == NULL)
@ -483,23 +427,16 @@ _cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
kms_onscreen = egl_onscreen->platform;
context->glBindFramebuffer (GL_FRAMEBUFFER_EXT, kms_onscreen->fb);
context->glFramebufferRenderbuffer (GL_FRAMEBUFFER_EXT,
GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT,
0);
context->glDeleteRenderbuffers(2, kms_onscreen->color_rb);
context->glFramebufferRenderbuffer (GL_FRAMEBUFFER_EXT,
GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT,
0);
context->glDeleteRenderbuffers(1, &kms_onscreen->depth_rb);
for (i = 0; i < 2; i++)
if (egl_onscreen->egl_surface != EGL_NO_SURFACE)
{
drmModeRmFB (kms_renderer->fd, kms_onscreen->fb_id[i]);
_cogl_egl_destroy_image (context, kms_onscreen->image[i]);
gbm_bo_destroy (kms_onscreen->bo[i]);
eglDestroySurface (egl_renderer->edpy, egl_onscreen->egl_surface);
egl_onscreen->egl_surface = EGL_NO_SURFACE;
}
if (kms_onscreen->surface)
{
gbm_surface_destroy (kms_onscreen->surface);
kms_onscreen->surface = NULL;
}
g_slice_free (CoglOnscreenKMS, kms_onscreen);
@ -507,32 +444,12 @@ _cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
onscreen->winsys = NULL;
}
static void
_cogl_winsys_onscreen_bind (CoglOnscreen *onscreen)
{
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglDisplayEGL *egl_display = context->display->winsys;
CoglRenderer *renderer = context->display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
eglMakeCurrent (egl_renderer->edpy,
EGL_NO_SURFACE,
EGL_NO_SURFACE,
egl_display->egl_context);
}
static void
_cogl_winsys_onscreen_update_swap_throttled (CoglOnscreen *onscreen)
{
_cogl_winsys_onscreen_bind (onscreen);
}
static const CoglWinsysEGLVtable
_cogl_winsys_egl_vtable =
{
.display_setup = _cogl_winsys_egl_display_setup,
.display_destroy = _cogl_winsys_egl_display_destroy,
.try_create_context = _cogl_winsys_egl_try_create_context,
.context_created = _cogl_winsys_egl_context_created,
.cleanup_context = _cogl_winsys_egl_cleanup_context
};
@ -547,7 +464,8 @@ _cogl_winsys_egl_kms_get_vtable (void)
/* The EGL_KMS winsys is a subclass of the EGL winsys so we
start by copying its vtable */
vtable = *_cogl_winsys_egl_get_vtable ();
parent_vtable = _cogl_winsys_egl_get_vtable ();
vtable = *parent_vtable;
vtable.id = COGL_WINSYS_ID_EGL_KMS;
vtable.name = "EGL_KMS";
@ -557,15 +475,11 @@ _cogl_winsys_egl_kms_get_vtable (void)
vtable.onscreen_init = _cogl_winsys_onscreen_init;
vtable.onscreen_deinit = _cogl_winsys_onscreen_deinit;
vtable.onscreen_bind = _cogl_winsys_onscreen_bind;
/* The KMS winsys doesn't support swap region */
vtable.onscreen_swap_region = NULL;
vtable.onscreen_swap_buffers = _cogl_winsys_onscreen_swap_buffers;
vtable.onscreen_update_swap_throttled =
_cogl_winsys_onscreen_update_swap_throttled;
vtable_inited = TRUE;
}

5
cogl/winsys/cogl-winsys-egl-private.h
View File

@ -38,11 +38,6 @@ typedef struct _CoglWinsysEGLVtable
void
(* display_destroy) (CoglDisplay *display);
gboolean
(* try_create_context) (CoglDisplay *display,
EGLint *attribs,
GError **error);
gboolean
(* context_created) (CoglDisplay *display,
GError **error);

5
cogl/winsys/cogl-winsys-egl.c
View File

@ -247,11 +247,6 @@ try_create_context (CoglDisplay *display,
else
attribs[0] = EGL_NONE;
/* Divert to the platform implementation if one is defined */
if (egl_renderer->platform_vtable->try_create_context)
return egl_renderer->platform_vtable->
try_create_context (display, attribs, error);
egl_attributes_from_framebuffer_config (display,
&display->onscreen_template->config,
with_stencil_buffer,