sungmg/mutter-performance-source
1
0
Fork 0
Code Activity

kms: Add first version of "baremetal" backend for EGL on KMS

Browse source 
To start with this backend only supports creating a single CoglOnscreen
framebuffer and will automatically set is up to display fullscreen on
the first suitable crtc it can find.

To compile this backend - get some dribbly black candles, sacrifice a
goat and configure with: --enable-kms-egl-platform

Note: There is currently a problem with using GLES2 with this winsys
so you need to run with EGL_DRIVER=gl
Note: If you have problems with mesa crashing in XCB during
eglInitialize then you may need to explicitly run with EGL_PLATFORM=gbm

Reviewed-by: Robert Bragg <robert@linux.intel.com>
This commit is contained in:
Rob Bradford 2011-11-07 17:16:13 +00:00 committed by Robert Bragg
parent d44e548715
commit 1b54c8023e
5 changed files with 639 additions and 14 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
cogl/Makefile.am
View file

@ -370,6 +370,11 @@ if SUPPORT_EGL_PLATFORM_WAYLAND
cogl_public_h += \
$(srcdir)/cogl-wayland-renderer.h
endif
if SUPPORT_EGL_PLATFORM_KMS
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-kms.c \
$(srcdir)/winsys/cogl-winsys-kms.h
endif
if SUPPORT_EGL
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-egl.c \

128
cogl/winsys/cogl-winsys-egl.c
View file

@ -62,7 +62,12 @@
#include <android/native_window.h>
#endif
#ifdef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
#include "cogl-winsys-kms.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
@ -106,6 +111,9 @@ typedef struct _CoglRendererEGL
#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
gboolean gdl_initialized;
#endif
#ifdef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
CoglRendererKMS kms_renderer;
#endif
/* Function pointers for GLX specific extensions */
#define COGL_WINSYS_FEATURE_BEGIN(a, b, c, d)
@ -137,8 +145,13 @@ typedef struct _CoglDisplayEGL
EGLSurface dummy_surface;
#elif defined (COGL_HAS_EGL_PLATFORM_POWERVR_NULL_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_GDL_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_ANDROID_SUPPORT)
defined (COGL_HAS_EGL_PLATFORM_ANDROID_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_KMS_SUPPORT)
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
EGLSurface egl_surface;
#else
CoglDisplayKMS kms_display;
#endif
int egl_surface_width;
int egl_surface_height;
gboolean have_onscreen;
@ -175,7 +188,11 @@ typedef struct _CoglOnscreenEGL
struct wl_surface *wayland_surface;
#endif
#ifdef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
CoglOnscreenKMS kms_onscreen;
#else
EGLSurface egl_surface;
#endif
} CoglOnscreenEGL;
#ifdef EGL_KHR_image_pixmap
@ -434,6 +451,11 @@ _cogl_winsys_renderer_connect (CoglRenderer *renderer,
&egl_renderer->egl_version_major,
&egl_renderer->egl_version_minor);
#elif defined (COGL_HAS_EGL_PLATFORM_KMS_SUPPORT)
if (!_cogl_winsys_kms_connect (&egl_renderer->kms_renderer, error))
goto error;
egl_renderer->edpy = egl_renderer->kms_renderer.dpy;
status = EGL_TRUE;
#else
egl_renderer->edpy = eglGetDisplay (EGL_DEFAULT_DISPLAY);
@ -641,12 +663,14 @@ try_create_context (CoglDisplay *display,
CoglXlibRenderer *xlib_renderer = display->renderer->winsys;
#endif
CoglRendererEGL *egl_renderer = display->renderer->winsys;
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
EGLDisplay edpy;
EGLConfig config;
EGLint config_count = 0;
EGLBoolean status;
EGLint cfg_attribs[MAX_EGL_CONFIG_ATTRIBS];
EGLint attribs[3];
#endif
EGLint cfg_attribs[MAX_EGL_CONFIG_ATTRIBS];
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
XVisualInfo *xvisinfo;
XSetWindowAttributes attrs;
@ -660,11 +684,12 @@ try_create_context (CoglDisplay *display,
_COGL_RETURN_VAL_IF_FAIL (egl_display->egl_context == NULL, TRUE);
edpy = egl_renderer->edpy;
if (display->renderer->driver == COGL_DRIVER_GL)
eglBindAPI (EGL_OPENGL_API);
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
edpy = egl_renderer->edpy;
status = eglChooseConfig (edpy,
cfg_attribs,
&config, 1,
@ -695,7 +720,7 @@ try_create_context (CoglDisplay *display,
error_message = "Unable to create a suitable EGL context";
goto fail;
}
#endif
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
xvisinfo = get_visual_info (display, config);
@ -907,14 +932,24 @@ try_create_context (CoglDisplay *display,
EGL_HEIGHT,
&egl_display->egl_surface_height);
#elif defined (COGL_HAS_EGL_PLATFORM_KMS_SUPPORT)
if (!_cogl_winsys_kms_create_context (&egl_renderer->kms_renderer,
&egl_display->kms_display,
error))
return FALSE;
egl_display->egl_surface_width = egl_display->kms_display.width;
egl_display->egl_surface_height = egl_display->kms_display.height;
egl_display->egl_context = egl_display->kms_display.egl_context;
#else
#error "Unknown EGL platform"
#endif
return TRUE;
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
fail:
#endif
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"%s", error_message);
@ -930,6 +965,17 @@ cleanup_context (CoglDisplay *display)
CoglXlibDisplay *xlib_display = display->winsys;
CoglXlibRenderer *xlib_renderer = display->renderer->winsys;
#endif
#if defined (COGL_HAS_EGL_PLATFORM_KMS_SUPPORT)
GError *error = NULL;
if (!_cogl_winsys_kms_destroy_context (&egl_renderer->kms_renderer,
&egl_display->kms_display,
&error))
{
g_critical (G_STRLOC ": Error cleaning up KMS rendering state: %s", error->message);
g_clear_error (&error);
}
#endif
if (egl_display->egl_context != EGL_NO_CONTEXT)
{
@ -1108,7 +1154,8 @@ _cogl_winsys_display_setup (CoglDisplay *display,
GError **error)
{
CoglDisplayEGL *egl_display;
#ifdef COGL_HAS_WAYLAND_EGL_SERVER_SUPPORT
#if defined (COGL_HAS_WAYLAND_EGL_SERVER_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_KMS_SUPPORT)
CoglRendererEGL *egl_renderer = display->renderer->winsys;
#endif
@ -1131,6 +1178,13 @@ _cogl_winsys_display_setup (CoglDisplay *display,
}
#endif
#ifdef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
if (!_cogl_winsys_kms_display_setup (&egl_renderer->kms_renderer,
&egl_display->kms_display,
error))
goto error;
#endif
if (!create_context (display, error))
goto error;
@ -1181,19 +1235,24 @@ _cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
CoglOnscreenXlib *xlib_onscreen;
Window xwin;
#endif
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
#if defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_KMS_SUPPORT)
CoglRendererEGL *egl_renderer = display->renderer->winsys;
#endif
CoglOnscreenEGL *egl_onscreen;
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
EGLint attributes[MAX_EGL_CONFIG_ATTRIBS];
EGLConfig egl_config;
EGLint config_count = 0;
EGLBoolean status;
gboolean need_stencil =
egl_display->stencil_disabled ? FALSE : framebuffer->config.need_stencil;
#endif
_COGL_RETURN_VAL_IF_FAIL (egl_display->egl_context, FALSE);
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
egl_attributes_from_framebuffer_config (display,
&framebuffer->config,
need_stencil,
@ -1222,7 +1281,7 @@ _cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
g_return_val_if_fail (status == EGL_TRUE, TRUE);
framebuffer->samples_per_pixel = samples;
}
#endif
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
/* FIXME: We need to explicitly Select for ConfigureNotify events.
@ -1384,7 +1443,8 @@ _cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
#elif defined (COGL_HAS_EGL_PLATFORM_POWERVR_NULL_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_ANDROID_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_GDL_SUPPORT)
defined (COGL_HAS_EGL_PLATFORM_GDL_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_KMS_SUPPORT)
if (egl_display->have_onscreen)
{
g_set_error (error, COGL_WINSYS_ERROR,
@ -1393,7 +1453,16 @@ _cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
return FALSE;
}
#ifdef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
if (!_cogl_winsys_kms_onscreen_init (cogl_framebuffer_get_context (framebuffer),
&egl_renderer->kms_renderer,
&egl_display->kms_display,
&egl_onscreen->kms_onscreen,
error))
return FALSE;
#else
egl_onscreen->egl_surface = egl_display->egl_surface;
#endif
_cogl_framebuffer_winsys_update_size (framebuffer,
egl_display->egl_surface_width,
@ -1411,6 +1480,7 @@ _cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
{
CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
CoglContext *context = framebuffer->context;
CoglRendererEGL *egl_renderer = context->display->renderer->winsys;
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
CoglXlibRenderer *xlib_renderer = context->display->renderer->winsys;
CoglXlibTrapState old_state;
@ -1418,13 +1488,12 @@ _cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
#elif defined (COGL_HAS_EGL_PLATFORM_POWERVR_NULL_SUPPORT)
CoglDisplayEGL *egl_display = context->display->winsys;
#endif
CoglRendererEGL *egl_renderer = context->display->renderer->winsys;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
/* If we never successfully allocated then there's nothing to do */
if (egl_onscreen == NULL)
return;
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
if (egl_onscreen->egl_surface != EGL_NO_SURFACE)
{
if (eglDestroySurface (egl_renderer->edpy, egl_onscreen->egl_surface)
@ -1432,7 +1501,7 @@ _cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
g_warning ("Failed to destroy EGL surface");
egl_onscreen->egl_surface = EGL_NO_SURFACE;
}
#endif
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_NULL_SUPPORT
egl_display->have_onscreen = FALSE;
#endif
@ -1469,6 +1538,11 @@ _cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
}
#endif
#ifdef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
_cogl_winsys_kms_onscreen_deinit (&egl_renderer->kms_renderer,
&egl_onscreen->kms_onscreen);
#endif
g_slice_free (CoglOnscreenEGL, onscreen->winsys);
onscreen->winsys = NULL;
}
@ -1477,10 +1551,19 @@ static void
_cogl_winsys_onscreen_bind (CoglOnscreen *onscreen)
{
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglContextEGL *egl_context = context->winsys;
CoglDisplayEGL *egl_display = context->display->winsys;
CoglRendererEGL *egl_renderer = context->display->renderer->winsys;
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglContextEGL *egl_context = context->winsys;
#endif
#ifdef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
_cogl_winsys_kms_bind (&egl_renderer->kms_renderer,
&egl_display->kms_display);
return;
#else
if (egl_context->current_surface == egl_onscreen->egl_surface)
return;
@ -1497,6 +1580,7 @@ _cogl_winsys_onscreen_bind (CoglOnscreen *onscreen)
#elif defined (COGL_HAS_EGL_PLATFORM_POWERVR_NULL_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_ANDROID_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_GDL_SUPPORT)
return;
#else
#error "Unknown EGL platform"
@ -1515,6 +1599,8 @@ _cogl_winsys_onscreen_bind (CoglOnscreen *onscreen)
eglSwapInterval (egl_renderer->edpy, 1);
else
eglSwapInterval (egl_renderer->edpy, 0);
#endif
}
static void
@ -1522,6 +1608,7 @@ _cogl_winsys_onscreen_swap_region (CoglOnscreen *onscreen,
const int *user_rectangles,
int n_rectangles)
{
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglRendererEGL *egl_renderer = context->display->renderer->winsys;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
@ -1545,6 +1632,7 @@ _cogl_winsys_onscreen_swap_region (CoglOnscreen *onscreen,
n_rectangles,
rectangles) == EGL_FALSE)
g_warning ("Error reported by eglSwapBuffersRegion");
#endif
}
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
@ -1569,8 +1657,18 @@ _cogl_winsys_onscreen_swap_buffers (CoglOnscreen *onscreen)
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglRendererEGL *egl_renderer = context->display->renderer->winsys;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
#ifdef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
CoglDisplayEGL *egl_display = context->display->winsys;
#endif
#ifdef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
_cogl_winsys_kms_swap_buffers (&egl_renderer->kms_renderer,
&egl_display->kms_display,
&egl_onscreen->kms_onscreen);
return;
#else
eglSwapBuffers (egl_renderer->edpy, egl_onscreen->egl_surface);
#endif
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
/*
@ -1595,6 +1693,7 @@ _cogl_winsys_onscreen_x11_get_window_xid (CoglOnscreen *onscreen)
static void
_cogl_winsys_onscreen_update_swap_throttled (CoglOnscreen *onscreen)
{
#ifndef COGL_HAS_EGL_PLATFORM_KMS_SUPPORT
CoglContext *context = COGL_FRAMEBUFFER (onscreen)->context;
CoglContextEGL *egl_context = context->winsys;
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
@ -1603,6 +1702,7 @@ _cogl_winsys_onscreen_update_swap_throttled (CoglOnscreen *onscreen)
return;
egl_context->current_surface = EGL_NO_SURFACE;
#endif
_cogl_winsys_onscreen_bind (onscreen);
}

390
cogl/winsys/cogl-winsys-kms.c Normal file
View file

@ -0,0 +1,390 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Some code inspired by mesa demos eglkms.c.
*
* Authors:
* Rob Bradford <rob@linux.intel.com>
* Kristian Høgsberg (from eglkms.c)
* Benjamin Franzke (from eglkms.c)
*/
#include <GL/gl.h>
#include <GL/glext.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <fcntl.h>
#include <unistd.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-util.h"
#include "cogl-winsys-egl-private.h"
#include "cogl-winsys-private.h"
#include "cogl-feature-private.h"
#include "cogl-context-private.h"
#include "cogl-framebuffer.h"
#include "cogl-onscreen-private.h"
#include "cogl-swap-chain-private.h"
#include "cogl-renderer-private.h"
#include "cogl-private.h"
#include "cogl-winsys-kms.h"
static const char device_name[] = "/dev/dri/card0";
static gboolean
setup_kms (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
GError **error)
{
drmModeRes *resources;
drmModeConnector *connector;
drmModeEncoder *encoder;
int i;
resources = drmModeGetResources (kms_renderer->fd);
if (!resources)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"drmModeGetResources failed");
return FALSE;
}
for (i = 0; i < resources->count_connectors; i++)
{
connector = drmModeGetConnector (kms_renderer->fd, resources->connectors[i]);
if (connector == NULL)
continue;
if (connector->connection == DRM_MODE_CONNECTED &&
connector->count_modes > 0)
break;
drmModeFreeConnector(connector);
}
if (i == resources->count_connectors)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"No currently active connector found");
return FALSE;
}
for (i = 0; i < resources->count_encoders; i++)
{
encoder = drmModeGetEncoder (kms_renderer->fd, resources->encoders[i]);
if (encoder == NULL)
continue;
if (encoder->encoder_id == connector->encoder_id)
break;
drmModeFreeEncoder (encoder);
}
kms_display->saved_crtc = drmModeGetCrtc (kms_renderer->fd,
kms_display->encoder->crtc_id);
kms_display->connector = connector;
kms_display->encoder = encoder;
kms_display->mode = connector->modes[0];
return TRUE;
}
gboolean
_cogl_winsys_kms_connect (CoglRendererKMS *kms_renderer,
GError **error)
{
EGLint major, minor;
kms_renderer->fd = open (device_name, O_RDWR);
if (kms_renderer->fd < 0)
{
/* Probably permissions error */
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Couldn't open %s", device_name);
return FALSE;
}
kms_renderer->gbm = gbm_create_device (kms_renderer->fd);
if (kms_renderer->gbm == NULL)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Couldn't create gbm device");
goto close_fd;
}
kms_renderer->dpy = eglGetDisplay ((EGLNativeDisplayType)kms_renderer->gbm);
if (kms_renderer->dpy == EGL_NO_DISPLAY)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Couldn't get eglDisplay");
goto destroy_gbm_device;
}
if (!eglInitialize (kms_renderer->dpy, &major, &minor))
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Couldn't initialize EGL");
goto egl_terminate;
}
return TRUE;
egl_terminate:
eglTerminate (kms_renderer->dpy);
destroy_gbm_device:
gbm_device_destroy (kms_renderer->gbm);
close_fd:
close (kms_renderer->fd);
return FALSE;
}
gboolean
_cogl_winsys_kms_display_setup (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
GError **error)
{
if (!setup_kms (kms_renderer, kms_display, error))
return FALSE;
kms_display->width = kms_display->mode.hdisplay;
kms_display->height = kms_display->mode.vdisplay;
return TRUE;
}
gboolean
_cogl_winsys_kms_create_context (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
GError **error)
{
kms_display->egl_context = eglCreateContext (kms_renderer->dpy, NULL, EGL_NO_CONTEXT, NULL);
if (kms_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 (kms_renderer->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, kms_display->egl_context))
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to make context current");
return FALSE;
}
return TRUE;
}
gboolean
_cogl_winsys_kms_onscreen_init (CoglContext *context,
CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
CoglOnscreenKMS *kms_onscreen,
GError **error)
{
int i;
kms_onscreen->cogl_context = context;
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_display->mode.hdisplay, kms_display->mode.vdisplay,
24, 32,
stride,
handle,
&kms_onscreen->fb_id[i]) != 0)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Failed to create framebuffer from buffer");
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_COMPONENT,
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_kms_swap_buffers (kms_renderer, kms_display, kms_onscreen);
return TRUE;
}
void
_cogl_winsys_kms_onscreen_deinit (CoglRendererKMS *kms_renderer,
CoglOnscreenKMS *kms_onscreen)
{
int i;
CoglContext *context = kms_onscreen->cogl_context;
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++)
{
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]);
}
}
gboolean
_cogl_winsys_kms_destroy_context (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
GError **error)
{
int ret;
/* Restore the saved CRTC - this failing should not propagate an error */
ret = drmModeSetCrtc (kms_renderer->fd,
kms_display->saved_crtc->crtc_id,
kms_display->saved_crtc->buffer_id,
kms_display->saved_crtc->x, kms_display->saved_crtc->y,
&kms_display->connector->connector_id, 1,
&kms_display->saved_crtc->mode);
if (ret)
{
g_critical (G_STRLOC ": Error restoring saved CRTC");
}
drmModeFreeCrtc (kms_display->saved_crtc);
return TRUE;
}
void
_cogl_winsys_kms_swap_buffers (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
CoglOnscreenKMS *kms_onscreen)
{
CoglContext *context = kms_onscreen->cogl_context;
if (drmModeSetCrtc (kms_renderer->fd,
kms_display->encoder->crtc_id,
kms_onscreen->fb_id[kms_onscreen->current_frame],
0, 0,
&kms_display->connector->connector_id,
1,
&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");
}
}
void
_cogl_winsys_kms_bind (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display)
{
eglMakeCurrent (kms_renderer->dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, kms_display->egl_context);
}

104
cogl/winsys/cogl-winsys-kms.h Normal file
View file

@ -0,0 +1,104 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Authors:
* Rob Bradford <rob@linux.intel.com>
*/
#ifndef _COGL_WINSYS_KMS_PRIVATE_H_
#define _COGL_WINSYS_KMS_PRIVATE_H_
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <drm.h>
#include <xf86drmMode.h>
#include <gbm.h>
#include <glib.h>
#include "cogl-winsys-private.h"
typedef struct _CoglRendererKMS
{
int fd;
struct gbm_device *gbm;
EGLDisplay *dpy;
} CoglRendererKMS;
typedef struct _CoglDisplayKMS
{
EGLContext egl_context;
drmModeConnector *connector;
drmModeEncoder *encoder;
drmModeModeInfo mode;
drmModeCrtcPtr saved_crtc;
gint width, height;
} CoglDisplayKMS;
typedef struct _CoglOnscreenKMS
{
CoglContext *cogl_context;
uint32_t fb_id[2];
struct gbm_bo *bo[2];
GLuint fb, color_rb[2], depth_rb;
EGLImageKHR image[2];
gint current_frame;
} CoglOnscreenKMS;
gboolean
_cogl_winsys_kms_connect (CoglRendererKMS *kms_renderer,
GError **error);
gboolean
_cogl_winsys_kms_onscreen_init (CoglContext *context,
CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
CoglOnscreenKMS *kms_onscreen,
GError **error);
void
_cogl_winsys_kms_onscreen_deinit (CoglRendererKMS *kms_renderer,
CoglOnscreenKMS *kms_onscreen);
gboolean
_cogl_winsys_kms_display_setup (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
GError **error);
void
_cogl_winsys_kms_swap_buffers (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
CoglOnscreenKMS *kms_onscreen);
void
_cogl_winsys_kms_bind (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display);
gboolean
_cogl_winsys_kms_create_context (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
GError **error);
gboolean
_cogl_winsys_kms_destroy_context (CoglRendererKMS *kms_renderer,
CoglDisplayKMS *kms_display,
GError **error);
#endif /* _COGL_WINSYS_KMS_PRIVATE_H_ */

26
configure.ac
View file

@ -755,6 +755,32 @@ AS_IF([test "x$enable_wayland_egl_platform" == "xyes"],
AM_CONDITIONAL(SUPPORT_EGL_PLATFORM_WAYLAND,
[test "x$enable_wayland_egl_platform" = "xyes"])
AC_ARG_ENABLE(
[kms-egl-platform],
[AC_HELP_STRING([--enable-kms-egl-platform=@<:@no/yes@:>@], [Enable support for the Wayland egl platform @<:@default=no@:>@])],
[],
enable_kms_egl_platform=no
)
AS_IF([test "x$enable_kms_egl_platform" == "xyes"],
[
EGL_PLATFORM_COUNT=$((EGL_PLATFORM_COUNT+1))
NEED_EGL=yes
EGL_PLATFORMS="$EGL_PLATFORMS kms"
PKG_CHECK_EXISTS([gbm],
[
COGL_PKG_REQUIRES="$COGL_PKG_REQUIRES gbm"
COGL_PKG_REQUIRES="$COGL_PKG_REQUIRES libdrm"
COGL_PKG_REQUIRES="$COGL_PKG_REQUIRES gl"
],
[AC_MSG_ERROR([Unable to locate required kms libraries])])
COGL_DEFINES_SYMBOLS="$COGL_DEFINES_SYMBOLS COGL_HAS_EGL_PLATFORM_KMS_SUPPORT"
])
AM_CONDITIONAL(SUPPORT_EGL_PLATFORM_KMS,
[test "x$enable_kms_egl_platform" = "xyes"])
AC_ARG_ENABLE(
[wayland-egl-server],
[AC_HELP_STRING([--enable-wayland-egl-server=@<:@no/yes@:>@], [Enable server side wayland support @<:@default=no@:>@])],