gl-renderer: Replace EGL_*_WL macros with locally defined enums

Instead of using the EGL_*_WL macros imported from EGL headers,
start using enums that would be defined locally. This is needed as
there are limited number of macros defined in EGL headers and
adding new ones is not practically feasible when adding a new
texture type. (suggested by Daniel Stone)

Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>

libweston/renderer-gl/gl-renderer.c

@@ -138,11 +138,17 @@ struct yuv_plane_descriptor {
 	int plane_index;
 };
 
+enum texture_type {
+	TEXTURE_Y_XUXV_WL,
+	TEXTURE_Y_UV_WL,
+	TEXTURE_Y_U_V_WL
+};
+
 struct yuv_format_descriptor {
 	uint32_t format;
 	int input_planes;
 	int output_planes;
-	int texture_type;
+	enum texture_type texture_type;
 	struct yuv_plane_descriptor plane[4];
 };
 
@@ -2030,7 +2036,7 @@ struct yuv_format_descriptor yuv_formats[] = {
 		.format = DRM_FORMAT_YUYV,
 		.input_planes = 1,
 		.output_planes = 2,
-		.texture_type = EGL_TEXTURE_Y_XUXV_WL,
+		.texture_type = TEXTURE_Y_XUXV_WL,
 		{{
 			.width_divisor = 1,
 			.height_divisor = 1,
@@ -2046,7 +2052,7 @@ struct yuv_format_descriptor yuv_formats[] = {
 		.format = DRM_FORMAT_NV12,
 		.input_planes = 2,
 		.output_planes = 2,
-		.texture_type = EGL_TEXTURE_Y_UV_WL,
+		.texture_type = TEXTURE_Y_UV_WL,
 		{{
 			.width_divisor = 1,
 			.height_divisor = 1,
@@ -2062,7 +2068,7 @@ struct yuv_format_descriptor yuv_formats[] = {
 		.format = DRM_FORMAT_YUV420,
 		.input_planes = 3,
 		.output_planes = 3,
-		.texture_type = EGL_TEXTURE_Y_U_V_WL,
+		.texture_type = TEXTURE_Y_U_V_WL,
 		{{
 			.width_divisor = 1,
 			.height_divisor = 1,
@@ -2083,7 +2089,7 @@ struct yuv_format_descriptor yuv_formats[] = {
 		.format = DRM_FORMAT_YUV444,
 		.input_planes = 3,
 		.output_planes = 3,
-		.texture_type = EGL_TEXTURE_Y_U_V_WL,
+		.texture_type = TEXTURE_Y_U_V_WL,
 		{{
 			.width_divisor = 1,
 			.height_divisor = 1,
@@ -2181,13 +2187,13 @@ import_yuv_dmabuf(struct gl_renderer *gr,
 	image->num_images = format->output_planes;
 
 	switch (format->texture_type) {
-	case EGL_TEXTURE_Y_XUXV_WL:
+	case TEXTURE_Y_XUXV_WL:
 		image->shader = &gr->texture_shader_y_xuxv;
 		break;
-	case EGL_TEXTURE_Y_UV_WL:
+	case TEXTURE_Y_UV_WL:
 		image->shader = &gr->texture_shader_y_uv;
 		break;
-	case EGL_TEXTURE_Y_U_V_WL:
+	case TEXTURE_Y_U_V_WL:
 		image->shader = &gr->texture_shader_y_u_v;
 		break;
 	default: