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-rw-r--r--src/video_core/regs_texturing.h328
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diff --git a/src/video_core/regs_texturing.h b/src/video_core/regs_texturing.h
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+++ b/src/video_core/regs_texturing.h
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+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+
+#include "common/assert.h"
+#include "common/bit_field.h"
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+
+namespace Pica {
+
+struct TexturingRegs {
+ struct TextureConfig {
+ enum TextureType : u32 {
+ Texture2D = 0,
+ TextureCube = 1,
+ Shadow2D = 2,
+ Projection2D = 3,
+ ShadowCube = 4,
+ Disabled = 5,
+ };
+
+ enum WrapMode : u32 {
+ ClampToEdge = 0,
+ ClampToBorder = 1,
+ Repeat = 2,
+ MirroredRepeat = 3,
+ };
+
+ enum TextureFilter : u32 {
+ Nearest = 0,
+ Linear = 1,
+ };
+
+ union {
+ u32 raw;
+ BitField<0, 8, u32> r;
+ BitField<8, 8, u32> g;
+ BitField<16, 8, u32> b;
+ BitField<24, 8, u32> a;
+ } border_color;
+
+ union {
+ BitField<0, 16, u32> height;
+ BitField<16, 16, u32> width;
+ };
+
+ union {
+ BitField<1, 1, TextureFilter> mag_filter;
+ BitField<2, 1, TextureFilter> min_filter;
+ BitField<8, 2, WrapMode> wrap_t;
+ BitField<12, 2, WrapMode> wrap_s;
+ BitField<28, 2, TextureType>
+ type; ///< @note Only valid for texture 0 according to 3DBrew.
+ };
+
+ INSERT_PADDING_WORDS(0x1);
+
+ u32 address;
+
+ PAddr GetPhysicalAddress() const {
+ return address * 8;
+ }
+
+ // texture1 and texture2 store the texture format directly after the address
+ // whereas texture0 inserts some additional flags inbetween.
+ // Hence, we store the format separately so that all other parameters can be described
+ // in a single structure.
+ };
+
+ enum class TextureFormat : u32 {
+ RGBA8 = 0,
+ RGB8 = 1,
+ RGB5A1 = 2,
+ RGB565 = 3,
+ RGBA4 = 4,
+ IA8 = 5,
+ RG8 = 6, ///< @note Also called HILO8 in 3DBrew.
+ I8 = 7,
+ A8 = 8,
+ IA4 = 9,
+ I4 = 10,
+ A4 = 11,
+ ETC1 = 12, // compressed
+ ETC1A4 = 13, // compressed
+ };
+
+ static unsigned NibblesPerPixel(TextureFormat format) {
+ switch (format) {
+ case TextureFormat::RGBA8:
+ return 8;
+
+ case TextureFormat::RGB8:
+ return 6;
+
+ case TextureFormat::RGB5A1:
+ case TextureFormat::RGB565:
+ case TextureFormat::RGBA4:
+ case TextureFormat::IA8:
+ case TextureFormat::RG8:
+ return 4;
+
+ case TextureFormat::I4:
+ case TextureFormat::A4:
+ return 1;
+
+ case TextureFormat::I8:
+ case TextureFormat::A8:
+ case TextureFormat::IA4:
+
+ default: // placeholder for yet unknown formats
+ UNIMPLEMENTED();
+ return 0;
+ }
+ }
+
+ union {
+ BitField<0, 1, u32> texture0_enable;
+ BitField<1, 1, u32> texture1_enable;
+ BitField<2, 1, u32> texture2_enable;
+ };
+ TextureConfig texture0;
+ INSERT_PADDING_WORDS(0x8);
+ BitField<0, 4, TextureFormat> texture0_format;
+ BitField<0, 1, u32> fragment_lighting_enable;
+ INSERT_PADDING_WORDS(0x1);
+ TextureConfig texture1;
+ BitField<0, 4, TextureFormat> texture1_format;
+ INSERT_PADDING_WORDS(0x2);
+ TextureConfig texture2;
+ BitField<0, 4, TextureFormat> texture2_format;
+ INSERT_PADDING_WORDS(0x21);
+
+ struct FullTextureConfig {
+ const bool enabled;
+ const TextureConfig config;
+ const TextureFormat format;
+ };
+ const std::array<FullTextureConfig, 3> GetTextures() const {
+ return {{
+ {texture0_enable.ToBool(), texture0, texture0_format},
+ {texture1_enable.ToBool(), texture1, texture1_format},
+ {texture2_enable.ToBool(), texture2, texture2_format},
+ }};
+ }
+
+ // 0xc0-0xff: Texture Combiner (akin to glTexEnv)
+ struct TevStageConfig {
+ enum class Source : u32 {
+ PrimaryColor = 0x0,
+ PrimaryFragmentColor = 0x1,
+ SecondaryFragmentColor = 0x2,
+
+ Texture0 = 0x3,
+ Texture1 = 0x4,
+ Texture2 = 0x5,
+ Texture3 = 0x6,
+
+ PreviousBuffer = 0xd,
+ Constant = 0xe,
+ Previous = 0xf,
+ };
+
+ enum class ColorModifier : u32 {
+ SourceColor = 0x0,
+ OneMinusSourceColor = 0x1,
+ SourceAlpha = 0x2,
+ OneMinusSourceAlpha = 0x3,
+ SourceRed = 0x4,
+ OneMinusSourceRed = 0x5,
+
+ SourceGreen = 0x8,
+ OneMinusSourceGreen = 0x9,
+
+ SourceBlue = 0xc,
+ OneMinusSourceBlue = 0xd,
+ };
+
+ enum class AlphaModifier : u32 {
+ SourceAlpha = 0x0,
+ OneMinusSourceAlpha = 0x1,
+ SourceRed = 0x2,
+ OneMinusSourceRed = 0x3,
+ SourceGreen = 0x4,
+ OneMinusSourceGreen = 0x5,
+ SourceBlue = 0x6,
+ OneMinusSourceBlue = 0x7,
+ };
+
+ enum class Operation : u32 {
+ Replace = 0,
+ Modulate = 1,
+ Add = 2,
+ AddSigned = 3,
+ Lerp = 4,
+ Subtract = 5,
+ Dot3_RGB = 6,
+
+ MultiplyThenAdd = 8,
+ AddThenMultiply = 9,
+ };
+
+ union {
+ u32 sources_raw;
+ BitField<0, 4, Source> color_source1;
+ BitField<4, 4, Source> color_source2;
+ BitField<8, 4, Source> color_source3;
+ BitField<16, 4, Source> alpha_source1;
+ BitField<20, 4, Source> alpha_source2;
+ BitField<24, 4, Source> alpha_source3;
+ };
+
+ union {
+ u32 modifiers_raw;
+ BitField<0, 4, ColorModifier> color_modifier1;
+ BitField<4, 4, ColorModifier> color_modifier2;
+ BitField<8, 4, ColorModifier> color_modifier3;
+ BitField<12, 3, AlphaModifier> alpha_modifier1;
+ BitField<16, 3, AlphaModifier> alpha_modifier2;
+ BitField<20, 3, AlphaModifier> alpha_modifier3;
+ };
+
+ union {
+ u32 ops_raw;
+ BitField<0, 4, Operation> color_op;
+ BitField<16, 4, Operation> alpha_op;
+ };
+
+ union {
+ u32 const_color;
+ BitField<0, 8, u32> const_r;
+ BitField<8, 8, u32> const_g;
+ BitField<16, 8, u32> const_b;
+ BitField<24, 8, u32> const_a;
+ };
+
+ union {
+ u32 scales_raw;
+ BitField<0, 2, u32> color_scale;
+ BitField<16, 2, u32> alpha_scale;
+ };
+
+ inline unsigned GetColorMultiplier() const {
+ return (color_scale < 3) ? (1 << color_scale) : 1;
+ }
+
+ inline unsigned GetAlphaMultiplier() const {
+ return (alpha_scale < 3) ? (1 << alpha_scale) : 1;
+ }
+ };
+
+ TevStageConfig tev_stage0;
+ INSERT_PADDING_WORDS(0x3);
+ TevStageConfig tev_stage1;
+ INSERT_PADDING_WORDS(0x3);
+ TevStageConfig tev_stage2;
+ INSERT_PADDING_WORDS(0x3);
+ TevStageConfig tev_stage3;
+ INSERT_PADDING_WORDS(0x3);
+
+ enum class FogMode : u32 {
+ None = 0,
+ Fog = 5,
+ Gas = 7,
+ };
+
+ union {
+ BitField<0, 3, FogMode> fog_mode;
+ BitField<16, 1, u32> fog_flip;
+
+ union {
+ // Tev stages 0-3 write their output to the combiner buffer if the corresponding bit in
+ // these masks are set
+ BitField<8, 4, u32> update_mask_rgb;
+ BitField<12, 4, u32> update_mask_a;
+
+ bool TevStageUpdatesCombinerBufferColor(unsigned stage_index) const {
+ return (stage_index < 4) && (update_mask_rgb & (1 << stage_index));
+ }
+
+ bool TevStageUpdatesCombinerBufferAlpha(unsigned stage_index) const {
+ return (stage_index < 4) && (update_mask_a & (1 << stage_index));
+ }
+ } tev_combiner_buffer_input;
+ };
+
+ union {
+ u32 raw;
+ BitField<0, 8, u32> r;
+ BitField<8, 8, u32> g;
+ BitField<16, 8, u32> b;
+ } fog_color;
+
+ INSERT_PADDING_WORDS(0x4);
+
+ BitField<0, 16, u32> fog_lut_offset;
+
+ INSERT_PADDING_WORDS(0x1);
+
+ u32 fog_lut_data[8];
+
+ TevStageConfig tev_stage4;
+ INSERT_PADDING_WORDS(0x3);
+ TevStageConfig tev_stage5;
+
+ union {
+ u32 raw;
+ BitField<0, 8, u32> r;
+ BitField<8, 8, u32> g;
+ BitField<16, 8, u32> b;
+ BitField<24, 8, u32> a;
+ } tev_combiner_buffer_color;
+
+ INSERT_PADDING_WORDS(0x2);
+
+ const std::array<TevStageConfig, 6> GetTevStages() const {
+ return {{tev_stage0, tev_stage1, tev_stage2, tev_stage3, tev_stage4, tev_stage5}};
+ };
+};
+
+static_assert(sizeof(TexturingRegs) == 0x80 * sizeof(u32),
+ "TexturingRegs struct has incorrect size");
+
+} // namespace Pica
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-06 20:11:28 +0200