Fix opengl and auto resolution crashes (#14)

* video_core: fix UniformData size on opengl

* video_core: check for renderer on auto resolution

The rasterizer cache constructor will call GetResolutionScaleFactor
before the renderer is initialized on the vulkan backend, so
check for that case and return 1 as a placeholder scale factor.

src/video_core/renderer_opengl/gl_shader_manager.h

@@ -75,10 +75,11 @@ struct UniformData {
     LightSrc light_src[8];
     alignas(16) Common::Vec4f const_color[6]; // A vec4 color for each of the six tev stages
     alignas(16) Common::Vec4f tev_combiner_buffer_color;
+    alignas(16) Common::Vec3f tex_lod_bias;
     alignas(16) Common::Vec4f clip_coef;
 };
 
-static_assert(sizeof(UniformData) == 0x4F0,
+static_assert(sizeof(UniformData) == 0x500,
               "The size of the UniformData does not match the structure in the shader");
 static_assert(sizeof(UniformData) < 16384,
               "UniformData structure must be less than 16kb as per the OpenGL spec");

src/video_core/renderer_vulkan/vk_shader_gen_spv.cpp

@@ -1344,7 +1344,7 @@ void FragmentModule::DefineUniformStructs() {
         i32_id, i32_id, f32_id, f32_id, f32_id, f32_id, i32_id, i32_id, i32_id, i32_id, i32_id,
         i32_id, i32_id, i32_id, i32_id, i32_id, f32_id, i32_id, u32_id, lighting_lut_array_id,
         vec_ids.Get(3), vec_ids.Get(2), vec_ids.Get(2), vec_ids.Get(2), vec_ids.Get(3),
-        light_src_array_id, const_color_array_id, vec_ids.Get(4), vec_ids.Get(4), vec_ids.Get(3))};
+        light_src_array_id, const_color_array_id, vec_ids.Get(4), vec_ids.Get(3), vec_ids.Get(4))};
 
     constexpr std::array light_src_offsets{0u, 16u, 32u, 48u, 64u, 80u, 92u, 96u};
     constexpr std::array shader_data_offsets{

src/video_core/shader/shader_uniforms.h

@@ -63,8 +63,8 @@ struct UniformData {
     LightSrc light_src[8];
     alignas(16) Common::Vec4f const_color[6]; // A vec4 color for each of the six tev stages
     alignas(16) Common::Vec4f tev_combiner_buffer_color;
-    alignas(16) Common::Vec4f clip_coef;
     alignas(16) Common::Vec3f tex_lod_bias;
+    alignas(16) Common::Vec4f clip_coef;
 };
 
 static_assert(sizeof(UniformData) == 0x500,

src/video_core/video_core.cpp

@@ -93,7 +93,7 @@ void RequestScreenshot(void* data, std::function<void()> callback,
 }
 
 u16 GetResolutionScaleFactor() {
-    if (g_hw_renderer_enabled) {
+    if (g_hw_renderer_enabled && g_renderer) {
         return Settings::values.resolution_factor.GetValue()
                    ? Settings::values.resolution_factor.GetValue()
                    : g_renderer->GetRenderWindow().GetFramebufferLayout().GetScalingRatio();