GPU: Implement offsetted rendering when using non-indexed drawing.

This fixes Stardew Valley.

src/video_core/engines/maxwell_3d.h

@@ -455,7 +455,11 @@ public:
                     u32 enable[NumRenderTargets];
                 } blend;
 
-                INSERT_PADDING_WORDS(0x77);
+                INSERT_PADDING_WORDS(0x2D);
+
+                u32 vb_element_base;
+
+                INSERT_PADDING_WORDS(0x49);
 
                 struct {
                     u32 tsc_address_high;
@@ -745,6 +749,7 @@ ASSERT_REG_POSITION(vertex_attrib_format[0], 0x458);
 ASSERT_REG_POSITION(rt_control, 0x487);
 ASSERT_REG_POSITION(independent_blend_enable, 0x4B9);
 ASSERT_REG_POSITION(blend, 0x4CF);
+ASSERT_REG_POSITION(vb_element_base, 0x50D);
 ASSERT_REG_POSITION(tsc, 0x557);
 ASSERT_REG_POSITION(tic, 0x55D);
 ASSERT_REG_POSITION(code_address, 0x582);

src/video_core/engines/shader_bytecode.h

@@ -166,7 +166,6 @@ enum class SubOp : u64 {
     Lg2 = 0x3,
     Rcp = 0x4,
     Rsq = 0x5,
-    Min = 0x8,
 };
 
 enum class F2iRoundingOp : u64 {
@@ -210,7 +209,7 @@ union Instruction {
     } pred;
     BitField<19, 1, u64> negate_pred;
     BitField<20, 8, Register> gpr20;
-    BitField<20, 7, SubOp> sub_op;
+    BitField<20, 4, SubOp> sub_op;
     BitField<28, 8, Register> gpr28;
     BitField<39, 8, Register> gpr39;
     BitField<48, 16, u64> opcode;

src/video_core/gpu.h

@@ -16,6 +16,7 @@ namespace Tegra {
 enum class RenderTargetFormat : u32 {
     NONE = 0x0,
     RGBA32_FLOAT = 0xC0,
+    RGBA32_UINT = 0xC2,
     RGBA16_FLOAT = 0xCA,
     RGB10_A2_UNORM = 0xD1,
     RGBA8_UNORM = 0xD5,

src/video_core/renderer_opengl/gl_rasterizer.cpp

@@ -412,14 +412,16 @@ void RasterizerOpenGL::DrawArrays() {
 
     const GLenum primitive_mode{MaxwellToGL::PrimitiveTopology(regs.draw.topology)};
     if (is_indexed) {
-        const GLint index_min{static_cast<GLint>(regs.index_array.first)};
-        const GLint index_max{static_cast<GLint>(regs.index_array.first + regs.index_array.count)};
-        glDrawRangeElementsBaseVertex(primitive_mode, index_min, index_max, regs.index_array.count,
-                                      MaxwellToGL::IndexFormat(regs.index_array.format),
-                                      reinterpret_cast<const void*>(index_buffer_offset),
-                                      -index_min);
+        const GLint base_vertex{static_cast<GLint>(regs.vb_element_base)};
+
+        // Adjust the index buffer offset so it points to the first desired index.
+        index_buffer_offset += regs.index_array.first * regs.index_array.FormatSizeInBytes();
+
+        glDrawElementsBaseVertex(primitive_mode, regs.index_array.count,
+                                 MaxwellToGL::IndexFormat(regs.index_array.format),
+                                 reinterpret_cast<const void*>(index_buffer_offset), base_vertex);
     } else {
-        glDrawArrays(primitive_mode, 0, regs.vertex_buffer.count);
+        glDrawArrays(primitive_mode, regs.vertex_buffer.first, regs.vertex_buffer.count);
     }
 
     // Disable scissor test

src/video_core/renderer_opengl/gl_rasterizer_cache.cpp

@@ -27,6 +27,7 @@ struct FormatTuple {
     GLint internal_format;
     GLenum format;
     GLenum type;
+    ComponentType component_type;
     bool compressed;
 };
 
@@ -65,29 +66,33 @@ struct FormatTuple {
 }
 
 static constexpr std::array<FormatTuple, SurfaceParams::MaxPixelFormat> tex_format_tuples = {{
-    {GL_RGBA8, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, false},                    // ABGR8
-    {GL_RGB, GL_RGB, GL_UNSIGNED_SHORT_5_6_5_REV, false},                       // B5G6R5
-    {GL_RGB10_A2, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, false},              // A2B10G10R10
-    {GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_SHORT_1_5_5_5_REV, false},                // A1B5G5R5
-    {GL_R8, GL_RED, GL_UNSIGNED_BYTE, false},                                   // R8
-    {GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT, false},                                // RGBA16F
-    {GL_R11F_G11F_B10F, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, false},        // R11FG11FB10F
-    {GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_RGB, GL_UNSIGNED_INT_8_8_8_8, true},   // DXT1
-    {GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, true}, // DXT23
-    {GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, true}, // DXT45
-    {GL_COMPRESSED_RED_RGTC1, GL_RED, GL_UNSIGNED_INT_8_8_8_8, true},           // DXN1
-    {GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, false},                               // ASTC_2D_4X4
+    {GL_RGBA8, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8_REV, ComponentType::UNorm, false}, // ABGR8
+    {GL_RGB, GL_RGB, GL_UNSIGNED_SHORT_5_6_5_REV, ComponentType::UNorm, false},    // B5G6R5
+    {GL_RGB10_A2, GL_RGBA, GL_UNSIGNED_INT_2_10_10_10_REV, ComponentType::UNorm,
+     false}, // A2B10G10R10
+    {GL_RGB5_A1, GL_RGBA, GL_UNSIGNED_SHORT_1_5_5_5_REV, ComponentType::UNorm, false}, // A1B5G5R5
+    {GL_R8, GL_RED, GL_UNSIGNED_BYTE, ComponentType::UNorm, false},                    // R8
+    {GL_RGBA16F, GL_RGBA, GL_HALF_FLOAT, ComponentType::Float, false},                 // RGBA16F
+    {GL_R11F_G11F_B10F, GL_RGB, GL_UNSIGNED_INT_10F_11F_11F_REV, ComponentType::Float,
+     false},                                                                     // R11FG11FB10F
+    {GL_RGBA32UI, GL_RGBA_INTEGER, GL_UNSIGNED_INT, ComponentType::UInt, false}, // RGBA32UI
+    {GL_COMPRESSED_RGB_S3TC_DXT1_EXT, GL_RGB, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
+     true}, // DXT1
+    {GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
+     true}, // DXT23
+    {GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, GL_RGBA, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm,
+     true},                                                                                 // DXT45
+    {GL_COMPRESSED_RED_RGTC1, GL_RED, GL_UNSIGNED_INT_8_8_8_8, ComponentType::UNorm, true}, // DXN1
+    {GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, ComponentType::UNorm, false}, // ASTC_2D_4X4
 }};
 
 static const FormatTuple& GetFormatTuple(PixelFormat pixel_format, ComponentType component_type) {
     const SurfaceType type = SurfaceParams::GetFormatType(pixel_format);
     if (type == SurfaceType::ColorTexture) {
         ASSERT(static_cast<size_t>(pixel_format) < tex_format_tuples.size());
-        // For now only UNORM components are supported, or either R11FG11FB10F or RGBA16F which
-        // are type FLOAT
-        ASSERT(component_type == ComponentType::UNorm || pixel_format == PixelFormat::RGBA16F ||
-               pixel_format == PixelFormat::R11FG11FB10F);
-        return tex_format_tuples[static_cast<unsigned int>(pixel_format)];
+        auto& format = tex_format_tuples[static_cast<unsigned int>(pixel_format)];
+        ASSERT(component_type == format.component_type);
+        return format;
     } else if (type == SurfaceType::Depth || type == SurfaceType::DepthStencil) {
         // TODO(Subv): Implement depth formats
         ASSERT_MSG(false, "Unimplemented");
@@ -166,9 +171,10 @@ static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
         MortonCopy<true, PixelFormat::ABGR8>,        MortonCopy<true, PixelFormat::B5G6R5>,
         MortonCopy<true, PixelFormat::A2B10G10R10>,  MortonCopy<true, PixelFormat::A1B5G5R5>,
         MortonCopy<true, PixelFormat::R8>,           MortonCopy<true, PixelFormat::RGBA16F>,
-        MortonCopy<true, PixelFormat::R11FG11FB10F>, MortonCopy<true, PixelFormat::DXT1>,
-        MortonCopy<true, PixelFormat::DXT23>,        MortonCopy<true, PixelFormat::DXT45>,
-        MortonCopy<true, PixelFormat::DXN1>,         MortonCopy<true, PixelFormat::ASTC_2D_4X4>,
+        MortonCopy<true, PixelFormat::R11FG11FB10F>, MortonCopy<true, PixelFormat::RGBA32UI>,
+        MortonCopy<true, PixelFormat::DXT1>,         MortonCopy<true, PixelFormat::DXT23>,
+        MortonCopy<true, PixelFormat::DXT45>,        MortonCopy<true, PixelFormat::DXN1>,
+        MortonCopy<true, PixelFormat::ASTC_2D_4X4>,
 };
 
 static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
@@ -181,6 +187,7 @@ static constexpr std::array<void (*)(u32, u32, u32, u8*, Tegra::GPUVAddr),
         MortonCopy<false, PixelFormat::R8>,
         MortonCopy<false, PixelFormat::RGBA16F>,
         MortonCopy<false, PixelFormat::R11FG11FB10F>,
+        MortonCopy<false, PixelFormat::RGBA32UI>,
         // TODO(Subv): Swizzling the DXT1/DXT23/DXT45/DXN1 formats is not yet supported
         nullptr,
         nullptr,

src/video_core/renderer_opengl/gl_rasterizer_cache.h

@@ -30,11 +30,12 @@ struct SurfaceParams {
         R8 = 4,
         RGBA16F = 5,
         R11FG11FB10F = 6,
-        DXT1 = 7,
-        DXT23 = 8,
-        DXT45 = 9,
-        DXN1 = 10, // This is also known as BC4
-        ASTC_2D_4X4 = 11,
+        RGBA32UI = 7,
+        DXT1 = 8,
+        DXT23 = 9,
+        DXT45 = 10,
+        DXN1 = 11, // This is also known as BC4
+        ASTC_2D_4X4 = 12,
 
         Max,
         Invalid = 255,
@@ -77,6 +78,7 @@ struct SurfaceParams {
             1, // R8
             1, // RGBA16F
             1, // R11FG11FB10F
+            1, // RGBA32UI
             4, // DXT1
             4, // DXT23
             4, // DXT45
@@ -100,6 +102,7 @@ struct SurfaceParams {
             8,   // R8
             64,  // RGBA16F
             32,  // R11FG11FB10F
+            128, // RGBA32UI
             64,  // DXT1
             128, // DXT23
             128, // DXT45
@@ -125,6 +128,8 @@ struct SurfaceParams {
             return PixelFormat::RGBA16F;
         case Tegra::RenderTargetFormat::R11G11B10_FLOAT:
             return PixelFormat::R11FG11FB10F;
+        case Tegra::RenderTargetFormat::RGBA32_UINT:
+            return PixelFormat::RGBA32UI;
         default:
             NGLOG_CRITICAL(HW_GPU, "Unimplemented format={}", static_cast<u32>(format));
             UNREACHABLE();
@@ -148,6 +153,8 @@ struct SurfaceParams {
             return PixelFormat::RGBA16F;
         case Tegra::Texture::TextureFormat::BF10GF11RF11:
             return PixelFormat::R11FG11FB10F;
+        case Tegra::Texture::TextureFormat::R32_G32_B32_A32:
+            return PixelFormat::RGBA32UI;
         case Tegra::Texture::TextureFormat::DXT1:
             return PixelFormat::DXT1;
         case Tegra::Texture::TextureFormat::DXT23:
@@ -181,6 +188,8 @@ struct SurfaceParams {
             return Tegra::Texture::TextureFormat::R16_G16_B16_A16;
         case PixelFormat::R11FG11FB10F:
             return Tegra::Texture::TextureFormat::BF10GF11RF11;
+        case PixelFormat::RGBA32UI:
+            return Tegra::Texture::TextureFormat::R32_G32_B32_A32;
         case PixelFormat::DXT1:
             return Tegra::Texture::TextureFormat::DXT1;
         case PixelFormat::DXT23:
@@ -217,6 +226,8 @@ struct SurfaceParams {
         case Tegra::RenderTargetFormat::RGBA16_FLOAT:
         case Tegra::RenderTargetFormat::R11G11B10_FLOAT:
             return ComponentType::Float;
+        case Tegra::RenderTargetFormat::RGBA32_UINT:
+            return ComponentType::UInt;
         default:
             NGLOG_CRITICAL(HW_GPU, "Unimplemented format={}", static_cast<u32>(format));
             UNREACHABLE();

src/video_core/renderer_opengl/gl_shader_decompiler.cpp

@@ -917,10 +917,6 @@ private:
                     regs.SetRegisterToFloat(instr.gpr0, 0, "inversesqrt(" + op_a + ')', 1, 1,
                                             instr.alu.saturate_d);
                     break;
-                case SubOp::Min:
-                    regs.SetRegisterToFloat(instr.gpr0, 0, "min(" + op_a + "," + op_b + ')', 1, 1,
-                                            instr.alu.saturate_d);
-                    break;
                 default:
                     NGLOG_CRITICAL(HW_GPU, "Unhandled MUFU sub op: {0:x}",
                                    static_cast<unsigned>(instr.sub_op.Value()));

src/video_core/textures/decoders.cpp

@@ -65,6 +65,8 @@ u32 BytesPerPixel(TextureFormat format) {
         return 1;
     case TextureFormat::R16_G16_B16_A16:
         return 8;
+    case TextureFormat::R32_G32_B32_A32:
+        return 16;
     default:
         UNIMPLEMENTED_MSG("Format not implemented");
         break;
@@ -94,6 +96,7 @@ std::vector<u8> UnswizzleTexture(VAddr address, TextureFormat format, u32 width,
     case TextureFormat::B5G6R5:
     case TextureFormat::R8:
     case TextureFormat::R16_G16_B16_A16:
+    case TextureFormat::R32_G32_B32_A32:
     case TextureFormat::BF10GF11RF11:
     case TextureFormat::ASTC_2D_4X4:
         CopySwizzledData(width, height, bytes_per_pixel, bytes_per_pixel, data,
@@ -124,6 +127,7 @@ std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat
     case TextureFormat::B5G6R5:
     case TextureFormat::R8:
     case TextureFormat::BF10GF11RF11:
+    case TextureFormat::R32_G32_B32_A32:
         // TODO(Subv): For the time being just forward the same data without any decoding.
         rgba_data = texture_data;
         break;