egl/x11: deduplicate depth-to-format logic

Suggested-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>

src/egl/drivers/dri2/platform_x11.c

@@ -1006,6 +1006,24 @@ dri2_x11_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
    return EGL_TRUE;
 }
 
+uint32_t
+dri2_format_for_depth(uint32_t depth)
+{
+   switch (depth) {
+   case 16:
+      return __DRI_IMAGE_FORMAT_RGB565;
+   case 24:
+      return __DRI_IMAGE_FORMAT_XRGB8888;
+   case 30:
+      return __DRI_IMAGE_FORMAT_XRGB2101010;
+   case 32:
+      return __DRI_IMAGE_FORMAT_ARGB8888;
+   default:
+      return __DRI_IMAGE_FORMAT_NONE;
+   }
+}
+
+
 static _EGLImage *
 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
 			     EGLClientBuffer buffer, const EGLint *attr_list)
@@ -1050,20 +1068,9 @@ dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
       return NULL;
    }
 
-   switch (geometry_reply->depth) {
-   case 16:
-      format = __DRI_IMAGE_FORMAT_RGB565;
-      break;
-   case 24:
-      format = __DRI_IMAGE_FORMAT_XRGB8888;
-      break;
-   case 30:
-      format = __DRI_IMAGE_FORMAT_XRGB2101010;
-      break;
-   case 32:
-      format = __DRI_IMAGE_FORMAT_ARGB8888;
-      break;
-   default:
+   format = dri2_format_for_depth(geometry_reply->depth);
+
+   if (format == __DRI_IMAGE_FORMAT_NONE) {
       _eglError(EGL_BAD_PARAMETER,
 		"dri2_create_image_khr: unsupported pixmap depth");
       free(buffers_reply);

src/egl/drivers/dri2/platform_x11_dri3.c

@@ -39,23 +39,6 @@
 #include "loader.h"
 #include "loader_dri3_helper.h"
 
-static uint32_t
-dri3_format_for_depth(uint32_t depth)
-{
-   switch (depth) {
-   case 16:
-      return __DRI_IMAGE_FORMAT_RGB565;
-   case 24:
-      return __DRI_IMAGE_FORMAT_XRGB8888;
-   case 30:
-      return __DRI_IMAGE_FORMAT_XRGB2101010;
-   case 32:
-      return __DRI_IMAGE_FORMAT_ARGB8888;
-   default:
-      return __DRI_IMAGE_FORMAT_NONE;
-   }
-}
-
 static struct dri3_egl_surface *
 loader_drawable_to_egl_surface(struct loader_dri3_drawable *draw) {
    size_t offset = offsetof(struct dri3_egl_surface, loader_drawable);
@@ -298,7 +281,7 @@ dri3_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
       return NULL;
    }
 
-   format = dri3_format_for_depth(bp_reply->depth);
+   format = dri2_format_for_depth(bp_reply->depth);
    if (format == __DRI_IMAGE_FORMAT_NONE) {
       _eglError(EGL_BAD_PARAMETER,
                 "dri3_create_image_khr: unsupported pixmap depth");
@@ -350,7 +333,7 @@ dri3_create_image_khr_pixmap_from_buffers(_EGLDisplay *disp, _EGLContext *ctx,
       return EGL_NO_IMAGE_KHR;
    }
 
-   format = dri3_format_for_depth(bp_reply->depth);
+   format = dri2_format_for_depth(bp_reply->depth);
    if (format == __DRI_IMAGE_FORMAT_NONE) {
       _eglError(EGL_BAD_PARAMETER,
                 "dri3_create_image_khr: unsupported pixmap depth");

src/egl/drivers/dri2/platform_x11_dri3.h

@@ -38,4 +38,7 @@ extern struct dri2_egl_display_vtbl dri3_x11_display_vtbl;
 EGLBoolean
 dri3_x11_connect(struct dri2_egl_display *dri2_dpy);
 
+uint32_t
+dri2_format_for_depth(uint32_t depth);
+
 #endif