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Add attr info printers for EGL config

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Phireh 2024-11-17 18:26:14 +01:00
commit 66ca44bb4e
1 changed files with 75 additions and 15 deletions
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90
wayland.c
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@ -8,9 +8,7 @@
struct wl_compositor *compositor = NULL;
struct wl_registry *registry = NULL;
struct wl_shell *shell = NULL;
struct wl_surface *surface = NULL;
struct wl_shm *shm = NULL;
EGLBoolean errcode = 0;
void registry_handle_global(void *data, struct wl_registry *registry,
@ -23,12 +21,6 @@ void registry_handle_global(void *data, struct wl_registry *registry,
fprintf(stdout, "Registering compositor...\n");
compositor = wl_registry_bind(registry, name, &wl_compositor_interface, 1);
}
if (!strcmp(interface, wl_shell_interface.name))
{
fprintf(stdout, "Getting shell interface...\n");
shell = wl_registry_bind(registry, name, &wl_shell_interface, 1);
}
}
@ -106,7 +98,7 @@ int main()
;
break;
}
EGLConfig *configs = calloc(config_count, sizeof(EGLConfig));
EGLint attr_list[] = {
@ -114,11 +106,10 @@ int main()
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RENDERABLE_TYPE, (EGL_OPENGL_BIT | EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT), // better be safe than sorry with our compatibility bitmask
EGL_NONE
};
int chosen_config_count;
errcode = eglChooseConfig(egl_display, attr_list, configs, config_count * sizeof(EGLConfig), &chosen_config_count);
switch (errcode)
{
@ -133,7 +124,74 @@ int main()
break;
}
EGLSurface egl_surface = eglCreateWindowSurface(egl_display, configs[0], (EGLNativeWindowType)window, NULL);
int chosen_config_id = 0;
EGLConfig *chosen_config = configs[0];
fprintf(stdout, "Found %d possible configurations:\n", chosen_config_count);
for (int i = 0; i < chosen_config_count; ++i)
{
fprintf(stdout, "\tCONFIG %d:\n", i);
int attr;
#define PRINT_ATTR(attr_name) \
errcode = eglGetConfigAttrib(egl_display, configs[i], attr_name, &attr); \
[[maybe_unused]] int attr_##attr_name = -1; \
do { \
if (errcode == EGL_TRUE) { \
fprintf(stdout, "\t\t" #attr_name ": %d (%#0x)\n", attr, attr); \
attr_##attr_name = attr; \
} \
} while (0)
PRINT_ATTR(EGL_ALPHA_SIZE);
PRINT_ATTR(EGL_ALPHA_MASK_SIZE);
PRINT_ATTR(EGL_BIND_TO_TEXTURE_RGB);
PRINT_ATTR(EGL_BIND_TO_TEXTURE_RGBA);
PRINT_ATTR(EGL_BLUE_SIZE);
PRINT_ATTR(EGL_BUFFER_SIZE);
PRINT_ATTR(EGL_COLOR_BUFFER_TYPE);
PRINT_ATTR(EGL_CONFIG_CAVEAT);
PRINT_ATTR(EGL_CONFIG_ID);
PRINT_ATTR(EGL_CONFORMANT);
PRINT_ATTR(EGL_DEPTH_SIZE);
PRINT_ATTR(EGL_GREEN_SIZE);
PRINT_ATTR(EGL_LEVEL);
PRINT_ATTR(EGL_LUMINANCE_SIZE);
PRINT_ATTR(EGL_MAX_PBUFFER_WIDTH);
PRINT_ATTR(EGL_MAX_PBUFFER_HEIGHT);
PRINT_ATTR(EGL_MAX_PBUFFER_PIXELS);
PRINT_ATTR(EGL_MAX_SWAP_INTERVAL);
PRINT_ATTR(EGL_NATIVE_RENDERABLE);
PRINT_ATTR(EGL_NATIVE_VISUAL_ID);
PRINT_ATTR(EGL_NATIVE_VISUAL_TYPE);
PRINT_ATTR(EGL_RED_SIZE);
PRINT_ATTR(EGL_RENDERABLE_TYPE);
PRINT_ATTR(EGL_SAMPLE_BUFFERS);
PRINT_ATTR(EGL_SAMPLES);
PRINT_ATTR(EGL_STENCIL_SIZE);
PRINT_ATTR(EGL_SURFACE_TYPE);
PRINT_ATTR(EGL_TRANSPARENT_TYPE);
PRINT_ATTR(EGL_TRANSPARENT_RED_VALUE);
PRINT_ATTR(EGL_TRANSPARENT_GREEN_VALUE);
PRINT_ATTR(EGL_TRANSPARENT_BLUE_VALUE);
// Try to at least choose an RGBA 32bit config
if (attr_EGL_ALPHA_SIZE == 8 &&
attr_EGL_BLUE_SIZE == 8 &&
attr_EGL_RED_SIZE == 8 &&
attr_EGL_GREEN_SIZE == 8 &&
attr_EGL_BUFFER_SIZE == 32 &&
attr_EGL_COLOR_BUFFER_TYPE == EGL_RGB_BUFFER &&
attr_EGL_SAMPLE_BUFFERS == 0) // with no multisampling
{
chosen_config_id = i;
}
}
#undef PRINT_ATTR
chosen_config = configs[chosen_config_id];
fprintf(stdout, "Chosen config #%d\n", chosen_config_id);
EGLSurface egl_surface = eglCreateWindowSurface(egl_display, chosen_config, (EGLNativeWindowType)window, NULL);
switch ((intptr_t)egl_surface)
{
@ -155,7 +213,9 @@ int main()
static const EGLint context_attribs[] = {
EGL_CONTEXT_MAJOR_VERSION, 3,
EGL_CONTEXT_MINOR_VERSION, 2,
#ifdef DEBUG
EGL_CONTEXT_OPENGL_DEBUG, EGL_TRUE,
#endif
EGL_NONE
};
@ -169,7 +229,7 @@ int main()
break;
}
EGLContext egl_context = eglCreateContext(egl_display, configs[0], EGL_NO_CONTEXT, context_attribs);
EGLContext egl_context = eglCreateContext(egl_display, chosen_config, EGL_NO_CONTEXT, context_attribs);
errcode = eglMakeCurrent(egl_display, egl_surface, egl_surface, egl_context);
switch (errcode)
@ -186,7 +246,7 @@ int main()
fprintf(stderr, "Could not make EGL context current\n");
break;
}
struct wl_region *region = wl_compositor_create_region(compositor);
wl_region_add(region, 0, 0, 480, 360);
wl_surface_set_opaque_region(surface, region);
@ -194,7 +254,7 @@ int main()
// Main event loop
while (1)
{
//wl_display_dispatch_pending(display);
wl_display_dispatch_pending(display);
fprintf(stdout, "Dispatching event...\n");
glClearColor(0.5, 0.3, 0.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);