From 3ce28342a29610da7652247e2ec5b6b9176e5e4f Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Tue, 21 Jan 2020 19:08:08 -0300 Subject: gl_shader_cache: Disable fastmath on Nvidia --- src/video_core/renderer_opengl/gl_shader_cache.cpp | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'src') diff --git a/src/video_core/renderer_opengl/gl_shader_cache.cpp b/src/video_core/renderer_opengl/gl_shader_cache.cpp index a4acb3796..3c5bdd377 100644 --- a/src/video_core/renderer_opengl/gl_shader_cache.cpp +++ b/src/video_core/renderer_opengl/gl_shader_cache.cpp @@ -260,6 +260,10 @@ CachedProgram BuildShader(const Device& device, u64 unique_identifier, ShaderTyp "#extension GL_NV_shader_thread_group : require\n" "#extension GL_NV_shader_thread_shuffle : require\n"; } + // This pragma stops Nvidia's driver from over optimizing math (probably using fp16 operations) + // on places where we don't want to. + // Thanks to Ryujinx for finding this workaround. + source += "#pragma optionNV(fastmath off)\n"; if (shader_type == ShaderType::Geometry) { const auto [glsl_topology, max_vertices] = GetPrimitiveDescription(variant.primitive_mode); -- cgit v1.2.3