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author | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-06-04 06:46:46 +0200 |
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committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-23 03:51:37 +0200 |
commit | 747b8556a4611791c1b0afbb500c77de57adfc54 (patch) | |
tree | 45ef1221c2801edbd04b26dfa73a135d804b6ba3 /src/shader_recompiler/backend | |
parent | emit_glsl_image: Use immediate offsets when possible (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/shader_recompiler/backend/glsl/emit_context.cpp | 4 | ||||
-rw-r--r-- | src/shader_recompiler/backend/glsl/emit_glsl_image.cpp | 44 |
2 files changed, 40 insertions, 8 deletions
diff --git a/src/shader_recompiler/backend/glsl/emit_context.cpp b/src/shader_recompiler/backend/glsl/emit_context.cpp index ecc7335ba..76cf0bdf0 100644 --- a/src/shader_recompiler/backend/glsl/emit_context.cpp +++ b/src/shader_recompiler/backend/glsl/emit_context.cpp @@ -282,8 +282,10 @@ EmitContext::EmitContext(IR::Program& program, Bindings& bindings, const Profile void EmitContext::SetupExtensions(std::string&) { // TODO: track this usage header += "#extension GL_ARB_sparse_texture2 : enable\n" - "#extension GL_EXT_texture_shadow_lod : enable\n" "#extension GL_EXT_shader_image_load_formatted : enable\n"; + if (profile.support_gl_texture_shadow_lod) { + header += "#extension GL_EXT_texture_shadow_lod : enable\n"; + } if (info.uses_int64) { header += "#extension GL_ARB_gpu_shader_int64 : enable\n"; } diff --git a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp index a62e2b181..6cf0300ab 100644 --- a/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp +++ b/src/shader_recompiler/backend/glsl/emit_glsl_image.cpp @@ -8,6 +8,7 @@ #include "shader_recompiler/backend/glsl/emit_glsl_instructions.h" #include "shader_recompiler/frontend/ir/modifiers.h" #include "shader_recompiler/frontend/ir/value.h" +#include "shader_recompiler/profile.h" namespace Shader::Backend::GLSL { namespace { @@ -67,14 +68,14 @@ std::string TexelFetchCastToInt(std::string_view value, const IR::TextureInstInf } } -std::string ShadowSamplerVecCast(TextureType type) { +bool NeedsShadowLodExt(TextureType type) { switch (type) { case TextureType::ColorArray2D: case TextureType::ColorCube: case TextureType::ColorArrayCube: - return "vec4"; + return true; default: - return "vec3"; + return false; } } @@ -221,7 +222,22 @@ void EmitImageSampleDrefImplicitLod([[maybe_unused]] EmitContext& ctx, } const auto texture{Texture(ctx, info, index)}; const auto bias{info.has_bias ? fmt::format(",{}", bias_lc) : ""}; - const auto cast{ShadowSamplerVecCast(info.type)}; + const bool needs_shadow_ext{NeedsShadowLodExt(info.type)}; + const auto cast{needs_shadow_ext ? "vec4" : "vec3"}; + const bool use_grad{!ctx.profile.support_gl_texture_shadow_lod && + ctx.stage != Stage::Fragment && needs_shadow_ext}; + if (use_grad) { + // LOG_WARNING(..., "Device lacks GL_EXT_texture_shadow_lod. Using textureGrad fallback"); + if (info.type == TextureType::ColorArrayCube) { + // LOG_WARNING(..., "textureGrad does not support ColorArrayCube. Stubbing"); + ctx.AddF32("{}=0.0f;", inst); + return; + } + const auto d_cast{info.type == TextureType::ColorArray2D ? "vec2" : "vec3"}; + ctx.AddF32("{}=textureGrad({},{}({},{}),{}(0),{}(0));", inst, texture, cast, coords, dref, + d_cast, d_cast); + return; + } if (!offset.IsEmpty()) { const auto offset_str{GetOffsetVec(ctx, offset)}; if (ctx.stage == Stage::Fragment) { @@ -263,15 +279,29 @@ void EmitImageSampleDrefExplicitLod([[maybe_unused]] EmitContext& ctx, throw NotImplementedException("EmitImageSampleDrefExplicitLod Lod clamp samples"); } const auto texture{Texture(ctx, info, index)}; - const auto cast{ShadowSamplerVecCast(info.type)}; + const bool needs_shadow_ext{NeedsShadowLodExt(info.type)}; + const bool use_grad{!ctx.profile.support_gl_texture_shadow_lod && needs_shadow_ext}; + const auto cast{needs_shadow_ext ? "vec4" : "vec3"}; + if (use_grad) { + // LOG_WARNING(..., "Device lacks GL_EXT_texture_shadow_lod. Using textureGrad fallback"); + if (info.type == TextureType::ColorArrayCube) { + // LOG_WARNING(..., "textureGrad does not support ColorArrayCube. Stubbing"); + ctx.AddF32("{}=0.0f;", inst); + return; + } + const auto d_cast{info.type == TextureType::ColorArray2D ? "vec2" : "vec3"}; + ctx.AddF32("{}=textureGrad({},{}({},{}),{}(0),{}(0));", inst, texture, cast, coords, dref, + d_cast, d_cast); + return; + } if (!offset.IsEmpty()) { const auto offset_str{GetOffsetVec(ctx, offset)}; if (info.type == TextureType::ColorArrayCube) { ctx.AddF32("{}=textureLodOffset({},{},{},{},{});", inst, texture, coords, dref, lod_lc, offset_str); } else { - ctx.AddF32("{}=textureLodOffset({},vec3({},{}),{},{});", inst, texture, coords, dref, - lod_lc, offset_str); + ctx.AddF32("{}=textureLodOffset({},{}({},{}),{},{});", inst, texture, cast, coords, + dref, lod_lc, offset_str); } } else { if (info.type == TextureType::ColorArrayCube) { |