From b84d429c2ec59e54a89d9d4e34b0df9f22172e8f Mon Sep 17 00:00:00 2001 From: ameerj <52414509+ameerj@users.noreply.github.com> Date: Mon, 27 Dec 2021 23:59:32 -0500 Subject: glsl_context_get_set: Add alternative cbuf type for broken drivers some drivers have a bug bitwise converting floating point cbuf values to uint variables. This adds a workaround for these drivers to make all cbufs uint and convert to floating point as needed. --- .../backend/glsl/emit_glsl_context_get_set.cpp | 35 +++++++++++++--------- .../backend/glsl/glsl_emit_context.cpp | 7 +++-- src/shader_recompiler/profile.h | 2 ++ src/video_core/renderer_opengl/gl_device.cpp | 9 ++---- src/video_core/renderer_opengl/gl_device.h | 5 ++++ src/video_core/renderer_opengl/gl_shader_cache.cpp | 1 + 6 files changed, 35 insertions(+), 24 deletions(-) diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp index 5ef46d634..0c1fbc7b1 100644 --- a/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp +++ b/src/shader_recompiler/backend/glsl/emit_glsl_context_get_set.cpp @@ -102,39 +102,46 @@ void GetCbuf16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const void EmitGetCbufU8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const IR::Value& offset) { - GetCbuf8(ctx, inst, binding, offset, "ftou"); + const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "" : "ftou"}; + GetCbuf8(ctx, inst, binding, offset, cast); } void EmitGetCbufS8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const IR::Value& offset) { - GetCbuf8(ctx, inst, binding, offset, "ftoi"); + const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "int" : "ftoi"}; + GetCbuf8(ctx, inst, binding, offset, cast); } void EmitGetCbufU16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const IR::Value& offset) { - GetCbuf16(ctx, inst, binding, offset, "ftou"); + const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "" : "ftou"}; + GetCbuf16(ctx, inst, binding, offset, cast); } void EmitGetCbufS16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const IR::Value& offset) { - GetCbuf16(ctx, inst, binding, offset, "ftoi"); + const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "int" : "ftoi"}; + GetCbuf16(ctx, inst, binding, offset, cast); } void EmitGetCbufU32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const IR::Value& offset) { const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32)}; - GetCbuf(ctx, ret, binding, offset, 32, "ftou"); + const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "" : "ftou"}; + GetCbuf(ctx, ret, binding, offset, 32, cast); } void EmitGetCbufF32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const IR::Value& offset) { const auto ret{ctx.var_alloc.Define(inst, GlslVarType::F32)}; - GetCbuf(ctx, ret, binding, offset, 32); + const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "utof" : ""}; + GetCbuf(ctx, ret, binding, offset, 32, cast); } void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const IR::Value& offset) { const auto cbuf{fmt::format("{}_cbuf{}", ctx.stage_name, binding.U32())}; + const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "" : "ftou"}; if (offset.IsImmediate()) { static constexpr u32 cbuf_size{0x10000}; const u32 u32_offset{offset.U32()}; @@ -145,26 +152,26 @@ void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding return; } if (u32_offset % 2 == 0) { - ctx.AddU32x2("{}=ftou({}[{}].{}{});", inst, cbuf, u32_offset / 16, + ctx.AddU32x2("{}={}({}[{}].{}{});", inst, cast, cbuf, u32_offset / 16, OffsetSwizzle(u32_offset), OffsetSwizzle(u32_offset + 4)); } else { - ctx.AddU32x2("{}=uvec2(ftou({}[{}].{}),ftou({}[{}].{}));", inst, cbuf, u32_offset / 16, - OffsetSwizzle(u32_offset), cbuf, (u32_offset + 4) / 16, - OffsetSwizzle(u32_offset + 4)); + ctx.AddU32x2("{}=uvec2({}({}[{}].{}),{}({}[{}].{}));", inst, cast, cbuf, + u32_offset / 16, OffsetSwizzle(u32_offset), cast, cbuf, + (u32_offset + 4) / 16, OffsetSwizzle(u32_offset + 4)); } return; } const auto offset_var{ctx.var_alloc.Consume(offset)}; if (!ctx.profile.has_gl_component_indexing_bug) { - ctx.AddU32x2("{}=uvec2(ftou({}[{}>>4][({}>>2)%4]),ftou({}[({}+4)>>4][(({}+4)>>2)%4]));", - inst, cbuf, offset_var, offset_var, cbuf, offset_var, offset_var); + ctx.AddU32x2("{}=uvec2({}({}[{}>>4][({}>>2)%4]),{}({}[({}+4)>>4][(({}+4)>>2)%4]));", inst, + cast, cbuf, offset_var, offset_var, cast, cbuf, offset_var, offset_var); return; } const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32x2)}; const auto cbuf_offset{fmt::format("{}>>2", offset_var)}; for (u32 swizzle = 0; swizzle < 4; ++swizzle) { - ctx.Add("if(({}&3)=={}){}=uvec2(ftou({}[{}>>4].{}),ftou({}[({}+4)>>4].{}));", cbuf_offset, - swizzle, ret, cbuf, offset_var, "xyzw"[swizzle], cbuf, offset_var, + ctx.Add("if(({}&3)=={}){}=uvec2({}({}[{}>>4].{}),{}({}[({}+4)>>4].{}));", cbuf_offset, + swizzle, ret, cast, cbuf, offset_var, "xyzw"[swizzle], cast, cbuf, offset_var, "xyzw"[(swizzle + 1) % 4]); } } diff --git a/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp b/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp index bc9d2a904..bb7f1a0fd 100644 --- a/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp +++ b/src/shader_recompiler/backend/glsl/glsl_emit_context.cpp @@ -428,9 +428,10 @@ void EmitContext::DefineConstantBuffers(Bindings& bindings) { return; } for (const auto& desc : info.constant_buffer_descriptors) { - header += fmt::format( - "layout(std140,binding={}) uniform {}_cbuf_{}{{vec4 {}_cbuf{}[{}];}};", - bindings.uniform_buffer, stage_name, desc.index, stage_name, desc.index, 4 * 1024); + const auto cbuf_type{profile.has_gl_cbuf_ftou_bug ? "uvec4" : "vec4"}; + header += fmt::format("layout(std140,binding={}) uniform {}_cbuf_{}{{{} {}_cbuf{}[{}];}};", + bindings.uniform_buffer, stage_name, desc.index, cbuf_type, + stage_name, desc.index, 4 * 1024); bindings.uniform_buffer += desc.count; } } diff --git a/src/shader_recompiler/profile.h b/src/shader_recompiler/profile.h index f0c3b3b17..9deb3f4bb 100644 --- a/src/shader_recompiler/profile.h +++ b/src/shader_recompiler/profile.h @@ -65,6 +65,8 @@ struct Profile { bool has_gl_component_indexing_bug{}; /// The precise type qualifier is broken in the fragment stage of some drivers bool has_gl_precise_bug{}; + /// Some drivers do not properly support floatBitsToUint when used on cbufs + bool has_gl_cbuf_ftou_bug{}; /// Ignores SPIR-V ordered vs unordered using GLSL semantics bool ignore_nan_fp_comparisons{}; diff --git a/src/video_core/renderer_opengl/gl_device.cpp b/src/video_core/renderer_opengl/gl_device.cpp index 0764ea6e0..32736126f 100644 --- a/src/video_core/renderer_opengl/gl_device.cpp +++ b/src/video_core/renderer_opengl/gl_device.cpp @@ -182,17 +182,12 @@ Device::Device() { shader_backend = Settings::ShaderBackend::GLSL; } - if (shader_backend == Settings::ShaderBackend::GLSL && is_nvidia && - !Settings::values.renderer_debug) { + if (shader_backend == Settings::ShaderBackend::GLSL && is_nvidia) { const std::string_view driver_version = version.substr(13); const int version_major = std::atoi(driver_version.substr(0, driver_version.find(".")).data()); - if (version_major >= 495) { - LOG_WARNING(Render_OpenGL, "NVIDIA drivers 495 and later causes significant problems " - "with yuzu. Forcing GLASM as a mitigation."); - shader_backend = Settings::ShaderBackend::GLASM; - use_assembly_shaders = true; + has_cbuf_ftou_bug = true; } } diff --git a/src/video_core/renderer_opengl/gl_device.h b/src/video_core/renderer_opengl/gl_device.h index de9e41659..fe53ef991 100644 --- a/src/video_core/renderer_opengl/gl_device.h +++ b/src/video_core/renderer_opengl/gl_device.h @@ -152,6 +152,10 @@ public: return need_fastmath_off; } + bool HasCbufFtouBug() const { + return has_cbuf_ftou_bug; + } + Settings::ShaderBackend GetShaderBackend() const { return shader_backend; } @@ -200,6 +204,7 @@ private: bool has_sparse_texture_2{}; bool warp_size_potentially_larger_than_guest{}; bool need_fastmath_off{}; + bool has_cbuf_ftou_bug{}; std::string vendor_name; }; diff --git a/src/video_core/renderer_opengl/gl_shader_cache.cpp b/src/video_core/renderer_opengl/gl_shader_cache.cpp index 29c6e1a5f..1efcc3562 100644 --- a/src/video_core/renderer_opengl/gl_shader_cache.cpp +++ b/src/video_core/renderer_opengl/gl_shader_cache.cpp @@ -214,6 +214,7 @@ ShaderCache::ShaderCache(RasterizerOpenGL& rasterizer_, Core::Frontend::EmuWindo .has_broken_fp16_float_controls = false, .has_gl_component_indexing_bug = device.HasComponentIndexingBug(), .has_gl_precise_bug = device.HasPreciseBug(), + .has_gl_cbuf_ftou_bug = device.HasCbufFtouBug(), .ignore_nan_fp_comparisons = true, .gl_max_compute_smem_size = device.GetMaxComputeSharedMemorySize(), }, -- cgit v1.2.3