gl-renderer: Fail earlier if shader compilation fails

If we can't compile our shaders, there's no point trying to link them.

Signed-off-by: Daniel Stone <daniels@collabora.com>

diff --git a/libweston/renderer-gl/gl-renderer.c b/libweston/renderer-gl/gl-renderer.c
index 6c43550..a40db36 100644 (file)
--- a/libweston/renderer-gl/gl-renderer.c
+++ b/libweston/renderer-gl/gl-renderer.c
@@ -2970,6 +2970,8 @@ shader_init(struct gl_shader *shader, struct gl_renderer *renderer,
 
        shader->vertex_shader =
                compile_shader(GL_VERTEX_SHADER, 1, &vertex_source);
+       if (shader->vertex_shader == GL_NONE)
+               return -1;
 
        if (renderer->fragment_shader_debug) {
                sources[0] = fragment_source;
@@ -2984,6 +2986,8 @@ shader_init(struct gl_shader *shader, struct gl_renderer *renderer,
 
        shader->fragment_shader =
                compile_shader(GL_FRAGMENT_SHADER, count, sources);
+       if (shader->fragment_shader == GL_NONE)
+               return -1;
 
        shader->program = glCreateProgram();
        glAttachShader(shader->program, shader->vertex_shader);