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.
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9f34be5a61
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@ -102,39 +102,46 @@ void GetCbuf16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding, const
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void EmitGetCbufU8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf8(ctx, inst, binding, offset, "ftou");
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const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "" : "ftou"};
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GetCbuf8(ctx, inst, binding, offset, cast);
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}
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void EmitGetCbufS8(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf8(ctx, inst, binding, offset, "ftoi");
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const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "int" : "ftoi"};
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GetCbuf8(ctx, inst, binding, offset, cast);
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}
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void EmitGetCbufU16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf16(ctx, inst, binding, offset, "ftou");
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const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "" : "ftou"};
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GetCbuf16(ctx, inst, binding, offset, cast);
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}
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void EmitGetCbufS16(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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GetCbuf16(ctx, inst, binding, offset, "ftoi");
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const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "int" : "ftoi"};
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GetCbuf16(ctx, inst, binding, offset, cast);
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}
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void EmitGetCbufU32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32)};
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GetCbuf(ctx, ret, binding, offset, 32, "ftou");
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const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "" : "ftou"};
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GetCbuf(ctx, ret, binding, offset, 32, cast);
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}
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void EmitGetCbufF32(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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const auto ret{ctx.var_alloc.Define(inst, GlslVarType::F32)};
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GetCbuf(ctx, ret, binding, offset, 32);
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const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "utof" : ""};
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GetCbuf(ctx, ret, binding, offset, 32, cast);
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}
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void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding,
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const IR::Value& offset) {
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const auto cbuf{fmt::format("{}_cbuf{}", ctx.stage_name, binding.U32())};
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const auto cast{ctx.profile.has_gl_cbuf_ftou_bug ? "" : "ftou"};
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if (offset.IsImmediate()) {
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static constexpr u32 cbuf_size{0x10000};
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const u32 u32_offset{offset.U32()};
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@ -145,26 +152,26 @@ void EmitGetCbufU32x2(EmitContext& ctx, IR::Inst& inst, const IR::Value& binding
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return;
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}
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if (u32_offset % 2 == 0) {
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ctx.AddU32x2("{}=ftou({}[{}].{}{});", inst, cbuf, u32_offset / 16,
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ctx.AddU32x2("{}={}({}[{}].{}{});", inst, cast, cbuf, u32_offset / 16,
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OffsetSwizzle(u32_offset), OffsetSwizzle(u32_offset + 4));
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} else {
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ctx.AddU32x2("{}=uvec2(ftou({}[{}].{}),ftou({}[{}].{}));", inst, cbuf, u32_offset / 16,
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OffsetSwizzle(u32_offset), cbuf, (u32_offset + 4) / 16,
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OffsetSwizzle(u32_offset + 4));
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ctx.AddU32x2("{}=uvec2({}({}[{}].{}),{}({}[{}].{}));", inst, cast, cbuf,
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u32_offset / 16, OffsetSwizzle(u32_offset), cast, cbuf,
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(u32_offset + 4) / 16, OffsetSwizzle(u32_offset + 4));
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}
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return;
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}
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const auto offset_var{ctx.var_alloc.Consume(offset)};
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if (!ctx.profile.has_gl_component_indexing_bug) {
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ctx.AddU32x2("{}=uvec2(ftou({}[{}>>4][({}>>2)%4]),ftou({}[({}+4)>>4][(({}+4)>>2)%4]));",
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inst, cbuf, offset_var, offset_var, cbuf, offset_var, offset_var);
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ctx.AddU32x2("{}=uvec2({}({}[{}>>4][({}>>2)%4]),{}({}[({}+4)>>4][(({}+4)>>2)%4]));", inst,
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cast, cbuf, offset_var, offset_var, cast, cbuf, offset_var, offset_var);
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return;
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}
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const auto ret{ctx.var_alloc.Define(inst, GlslVarType::U32x2)};
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const auto cbuf_offset{fmt::format("{}>>2", offset_var)};
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for (u32 swizzle = 0; swizzle < 4; ++swizzle) {
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ctx.Add("if(({}&3)=={}){}=uvec2(ftou({}[{}>>4].{}),ftou({}[({}+4)>>4].{}));", cbuf_offset,
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swizzle, ret, cbuf, offset_var, "xyzw"[swizzle], cbuf, offset_var,
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ctx.Add("if(({}&3)=={}){}=uvec2({}({}[{}>>4].{}),{}({}[({}+4)>>4].{}));", cbuf_offset,
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swizzle, ret, cast, cbuf, offset_var, "xyzw"[swizzle], cast, cbuf, offset_var,
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"xyzw"[(swizzle + 1) % 4]);
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}
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}
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@ -428,9 +428,10 @@ void EmitContext::DefineConstantBuffers(Bindings& bindings) {
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return;
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}
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for (const auto& desc : info.constant_buffer_descriptors) {
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header += fmt::format(
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"layout(std140,binding={}) uniform {}_cbuf_{}{{vec4 {}_cbuf{}[{}];}};",
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bindings.uniform_buffer, stage_name, desc.index, stage_name, desc.index, 4 * 1024);
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const auto cbuf_type{profile.has_gl_cbuf_ftou_bug ? "uvec4" : "vec4"};
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header += fmt::format("layout(std140,binding={}) uniform {}_cbuf_{}{{{} {}_cbuf{}[{}];}};",
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bindings.uniform_buffer, stage_name, desc.index, cbuf_type,
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stage_name, desc.index, 4 * 1024);
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bindings.uniform_buffer += desc.count;
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}
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}
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@ -65,6 +65,8 @@ struct Profile {
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bool has_gl_component_indexing_bug{};
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/// The precise type qualifier is broken in the fragment stage of some drivers
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bool has_gl_precise_bug{};
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/// Some drivers do not properly support floatBitsToUint when used on cbufs
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bool has_gl_cbuf_ftou_bug{};
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/// Ignores SPIR-V ordered vs unordered using GLSL semantics
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bool ignore_nan_fp_comparisons{};
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@ -182,17 +182,12 @@ Device::Device() {
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shader_backend = Settings::ShaderBackend::GLSL;
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}
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if (shader_backend == Settings::ShaderBackend::GLSL && is_nvidia &&
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!Settings::values.renderer_debug) {
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if (shader_backend == Settings::ShaderBackend::GLSL && is_nvidia) {
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const std::string_view driver_version = version.substr(13);
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const int version_major =
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std::atoi(driver_version.substr(0, driver_version.find(".")).data());
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if (version_major >= 495) {
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LOG_WARNING(Render_OpenGL, "NVIDIA drivers 495 and later causes significant problems "
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"with yuzu. Forcing GLASM as a mitigation.");
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shader_backend = Settings::ShaderBackend::GLASM;
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use_assembly_shaders = true;
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has_cbuf_ftou_bug = true;
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}
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}
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@ -152,6 +152,10 @@ public:
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return need_fastmath_off;
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}
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bool HasCbufFtouBug() const {
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return has_cbuf_ftou_bug;
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}
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Settings::ShaderBackend GetShaderBackend() const {
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return shader_backend;
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}
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@ -200,6 +204,7 @@ private:
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bool has_sparse_texture_2{};
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bool warp_size_potentially_larger_than_guest{};
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bool need_fastmath_off{};
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bool has_cbuf_ftou_bug{};
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std::string vendor_name;
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};
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@ -214,6 +214,7 @@ ShaderCache::ShaderCache(RasterizerOpenGL& rasterizer_, Core::Frontend::EmuWindo
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.has_broken_fp16_float_controls = false,
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.has_gl_component_indexing_bug = device.HasComponentIndexingBug(),
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.has_gl_precise_bug = device.HasPreciseBug(),
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.has_gl_cbuf_ftou_bug = device.HasCbufFtouBug(),
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.ignore_nan_fp_comparisons = true,
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.gl_max_compute_smem_size = device.GetMaxComputeSharedMemorySize(),
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},
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