From 712ec30cd9be1f180c3789e7e6a042c5f7b5781d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jonas=20=C3=85dahl?= Date: Fri, 23 Feb 2018 22:14:07 +0800 Subject: renderer/native: Force EGL config pixel format We just arbitrarily chose the first EGL config matching the passed attributes, but we then assumed we always got GBM_FORMAT_XRGB8888. That was not a correct assumption. Instead, make sure we always pick the format we expect. Closes: https://gitlab.gnome.org/GNOME/mutter/issues/2 --- cogl/cogl/winsys/cogl-winsys-egl-private.h | 5 ++ cogl/cogl/winsys/cogl-winsys-egl-x11.c | 27 ++++++++++ cogl/cogl/winsys/cogl-winsys-egl.c | 20 ++++---- src/backends/meta-egl.c | 66 +++++++++++++++++++++++++ src/backends/meta-egl.h | 13 +++++ src/backends/native/meta-renderer-native.c | 79 ++++++++++++++++++++++++++++-- 6 files changed, 196 insertions(+), 14 deletions(-) diff --git a/cogl/cogl/winsys/cogl-winsys-egl-private.h b/cogl/cogl/winsys/cogl-winsys-egl-private.h index 5d21b4f4e..8d3ab512b 100644 --- a/cogl/cogl/winsys/cogl-winsys-egl-private.h +++ b/cogl/cogl/winsys/cogl-winsys-egl-private.h @@ -90,6 +90,11 @@ typedef struct _CoglWinsysEGLVtable (* add_config_attributes) (CoglDisplay *display, CoglFramebufferConfig *config, EGLint *attributes); + CoglBool + (* choose_config) (CoglDisplay *display, + EGLint *attributes, + EGLConfig *out_config, + CoglError **error); } CoglWinsysEGLVtable; typedef enum _CoglEGLWinsysFeature diff --git a/cogl/cogl/winsys/cogl-winsys-egl-x11.c b/cogl/cogl/winsys/cogl-winsys-egl-x11.c index d72ba02f4..c1d01dccd 100644 --- a/cogl/cogl/winsys/cogl-winsys-egl-x11.c +++ b/cogl/cogl/winsys/cogl-winsys-egl-x11.c @@ -336,6 +336,32 @@ _cogl_winsys_egl_add_config_attributes (CoglDisplay *display, return i; } +static CoglBool +_cogl_winsys_egl_choose_config (CoglDisplay *display, + EGLint *attributes, + EGLConfig *out_config, + CoglError **error) +{ + CoglRenderer *renderer = display->renderer; + CoglRendererEGL *egl_renderer = renderer->winsys; + EGLint config_count = 0; + EGLBoolean status; + + status = eglChooseConfig (egl_renderer->edpy, + attributes, + out_config, 1, + &config_count); + if (status != EGL_TRUE || config_count == 0) + { + _cogl_set_error (error, COGL_WINSYS_ERROR, + COGL_WINSYS_ERROR_CREATE_CONTEXT, + "No compatible EGL configs found"); + return FALSE; + } + + return TRUE; +} + static CoglBool _cogl_winsys_egl_display_setup (CoglDisplay *display, CoglError **error) @@ -841,6 +867,7 @@ static const CoglWinsysEGLVtable _cogl_winsys_egl_vtable = { .add_config_attributes = _cogl_winsys_egl_add_config_attributes, + .choose_config = _cogl_winsys_egl_choose_config, .display_setup = _cogl_winsys_egl_display_setup, .display_destroy = _cogl_winsys_egl_display_destroy, .context_created = _cogl_winsys_egl_context_created, diff --git a/cogl/cogl/winsys/cogl-winsys-egl.c b/cogl/cogl/winsys/cogl-winsys-egl.c index 8f2bcc7de..fbd6112d4 100644 --- a/cogl/cogl/winsys/cogl-winsys-egl.c +++ b/cogl/cogl/winsys/cogl-winsys-egl.c @@ -338,10 +338,9 @@ try_create_context (CoglDisplay *display, CoglRendererEGL *egl_renderer = renderer->winsys; EGLDisplay edpy; EGLConfig config; - EGLint config_count = 0; - EGLBoolean status; EGLint attribs[9]; EGLint cfg_attribs[MAX_EGL_CONFIG_ATTRIBS]; + GError *config_error = NULL; const char *error_message; _COGL_RETURN_VAL_IF_FAIL (egl_display->egl_context == NULL, TRUE); @@ -356,14 +355,16 @@ try_create_context (CoglDisplay *display, edpy = egl_renderer->edpy; - status = eglChooseConfig (edpy, - cfg_attribs, - &config, 1, - &config_count); - if (status != EGL_TRUE || config_count == 0) + if (!egl_renderer->platform_vtable->choose_config (display, + cfg_attribs, + &config, + &config_error)) { - error_message = "Unable to find a usable EGL configuration"; - goto fail; + _cogl_set_error (error, COGL_WINSYS_ERROR, + COGL_WINSYS_ERROR_CREATE_CONTEXT, + "Couldn't choose config: %s", config_error->message); + g_error_free (config_error); + goto err; } egl_display->egl_config = config; @@ -419,6 +420,7 @@ fail: COGL_WINSYS_ERROR_CREATE_CONTEXT, "%s", error_message); +err: cleanup_context (display); return FALSE; diff --git a/src/backends/meta-egl.c b/src/backends/meta-egl.c index 775863f88..755ec4908 100644 --- a/src/backends/meta-egl.c +++ b/src/backends/meta-egl.c @@ -265,6 +265,72 @@ meta_egl_get_proc_address (MetaEgl *egl, return func; } +gboolean +meta_egl_get_config_attrib (MetaEgl *egl, + EGLDisplay display, + EGLConfig config, + EGLint attribute, + EGLint *value, + GError **error) +{ + if (!eglGetConfigAttrib (display, + config, + attribute, + value)) + { + set_egl_error (error); + return FALSE; + } + + return TRUE; +} + +EGLConfig * +meta_egl_choose_all_configs (MetaEgl *egl, + EGLDisplay display, + const EGLint *attrib_list, + EGLint *out_num_configs, + GError **error) +{ + EGLint num_configs; + EGLConfig *configs; + EGLint num_matches; + + if (!eglGetConfigs (display, NULL, 0, &num_configs)) + { + set_egl_error (error); + return FALSE; + } + + if (num_configs < 1) + { + g_set_error (error, G_IO_ERROR, + G_IO_ERROR_FAILED, + "No EGL configurations available"); + return FALSE; + } + + configs = g_new0 (EGLConfig, num_configs); + + if (!eglChooseConfig (display, attrib_list, configs, num_configs, &num_matches)) + { + g_free (configs); + set_egl_error (error); + return FALSE; + } + + if (num_matches == 0) + { + g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, + "No matching EGL configs"); + g_free (configs); + return NULL; + } + + *out_num_configs = num_configs; + return configs; +} + gboolean meta_egl_choose_first_config (MetaEgl *egl, EGLDisplay display, diff --git a/src/backends/meta-egl.h b/src/backends/meta-egl.h index be4e631d2..060c7cd2d 100644 --- a/src/backends/meta-egl.h +++ b/src/backends/meta-egl.h @@ -62,6 +62,19 @@ gboolean meta_egl_choose_first_config (MetaEgl *egl, EGLConfig *chosen_config, GError **error); +gboolean meta_egl_get_config_attrib (MetaEgl *egl, + EGLDisplay display, + EGLConfig config, + EGLint attribute, + EGLint *value, + GError **error); + +EGLConfig * meta_egl_choose_all_configs (MetaEgl *egl, + EGLDisplay display, + const EGLint *attrib_list, + EGLint *out_num_configs, + GError **error); + EGLContext meta_egl_create_context (MetaEgl *egl, EGLDisplay display, EGLConfig config, diff --git a/src/backends/native/meta-renderer-native.c b/src/backends/native/meta-renderer-native.c index 5c29597cc..8175a6b21 100644 --- a/src/backends/native/meta-renderer-native.c +++ b/src/backends/native/meta-renderer-native.c @@ -934,6 +934,73 @@ meta_renderer_native_add_egl_config_attributes (CoglDisplay *cogl_disp return i; } +static gboolean +choose_egl_config_from_gbm_format (MetaEgl *egl, + EGLDisplay egl_display, + const EGLint *attributes, + uint32_t gbm_format, + EGLConfig *out_config, + GError **error) +{ + EGLConfig *egl_configs; + EGLint n_configs; + EGLint i; + + egl_configs = meta_egl_choose_all_configs (egl, egl_display, + attributes, + &n_configs, + error); + if (!egl_configs) + return FALSE; + + for (i = 0; i < n_configs; i++) + { + EGLint visual_id; + + if (!meta_egl_get_config_attrib (egl, egl_display, + egl_configs[i], + EGL_NATIVE_VISUAL_ID, + &visual_id, + error)) + { + g_free (egl_configs); + return FALSE; + } + + if ((uint32_t) visual_id == gbm_format) + { + *out_config = egl_configs[i]; + g_free (egl_configs); + return TRUE; + } + } + + g_free (egl_configs); + g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, + "No EGL config matching supported GBM format found"); + return FALSE; +} + +static gboolean +meta_renderer_native_choose_egl_config (CoglDisplay *cogl_display, + EGLint *attributes, + EGLConfig *out_config, + GError **error) +{ + CoglRenderer *cogl_renderer = cogl_display->renderer; + CoglRendererEGL *cogl_renderer_egl = cogl_renderer->winsys; + MetaBackend *backend = meta_get_backend (); + MetaEgl *egl = meta_backend_get_egl (backend); + EGLDisplay egl_display = cogl_renderer_egl->edpy; + + return choose_egl_config_from_gbm_format (egl, + egl_display, + attributes, + GBM_FORMAT_XRGB8888, + out_config, + error); +} + static gboolean meta_renderer_native_setup_egl_display (CoglDisplay *cogl_display, GError **error) @@ -2408,6 +2475,7 @@ meta_renderer_native_release_onscreen (CoglOnscreen *onscreen) static const CoglWinsysEGLVtable _cogl_winsys_egl_vtable = { .add_config_attributes = meta_renderer_native_add_egl_config_attributes, + .choose_config = meta_renderer_native_choose_egl_config, .display_setup = meta_renderer_native_setup_egl_display, .display_destroy = meta_renderer_native_destroy_egl_display, .context_created = meta_renderer_native_egl_context_created, @@ -2846,11 +2914,12 @@ create_secondary_egl_config (MetaEgl *egl, EGL_NONE }; - return meta_egl_choose_first_config (egl, - egl_display, - attributes, - egl_config, - error); + return choose_egl_config_from_gbm_format (egl, + egl_display, + attributes, + GBM_FORMAT_XRGB8888, + egl_config, + error); } static EGLContext -- cgit v1.2.1