381 lines
17 KiB
C
381 lines
17 KiB
C
// #define V_ParticlesCap Kibi(128)
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// #define V_ParticlesCap Mebi(1)
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#define V_ParticlesCap Mebi(2)
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// #define V_ParticlesCap Mebi(16)
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////////////////////////////////////////////////////////////
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//~ Constant types
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Enum(V_GpuFlag)
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{
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V_GpuFlag_None = 0,
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};
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G_DeclConstant(V_GpuFlag, V_GpuConst_Flags, 0);
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G_DeclConstant(G_StructuredBufferRef, V_GpuConst_Frame, 1);
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G_DeclConstant(G_Texture3DRef, V_GpuConst_NoiseTex, 2);
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G_DeclConstant(i32, V_GpuConst_MipsCount, 3);
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G_DeclConstant(i32, V_GpuConst_MipIdx, 4);
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////////////////////////////////////////////////////////////
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//~ Particle types
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#define V_ParticleSimBasis 0xb49f2d9e406873b9ull
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#define V_ParticleColorBasis 0x569aa8341ecc0ea3ull
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#define V_ParticleCellBasis 0xf60c0cff344b0c5dull
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#define V_ParticleStainBasis 0x3c64e8226d98d376ull
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Enum(V_ParticleFlag)
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{
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V_ParticleFlag_None = 0,
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V_ParticleFlag_StainWhenPruned = (1 << 1),
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V_ParticleFlag_NoReflect = (1 << 2),
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V_ParticleFlag_OnlyCollideWithWalls = (1 << 3),
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V_ParticleFlag_GasBlend = (1 << 4),
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};
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Enum(V_ParticleLayer)
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{
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V_ParticleLayer_Ground,
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V_ParticleLayer_Mid,
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V_ParticleLayer_Air,
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V_ParticleLayer_COUNT
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};
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// NOTE: Higher particle enum values take priority over lower ones
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#define V_ParticlesXList(X) \
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X( \
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/* Name */ None, \
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/* Flags */ V_ParticleFlag_None, \
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/* Layer */ V_ParticleLayer_Ground, \
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/* Stain rate, pen chance */ 30, 0, \
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/* Lifetime */ Inf, \
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/* Prune speed threshold */ 0.01, \
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/* Base color */ VEC4(0, 0, 0, 0), \
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/* Dry color factor */ VEC4(1, 1, 1, 1) \
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) \
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\
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/* Ground particles */ \
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X( \
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/* Name */ BloodTrail, \
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/* Flags */ V_ParticleFlag_NoReflect | V_ParticleFlag_StainWhenPruned, \
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/* Layer */ V_ParticleLayer_Ground, \
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/* Stain rate, pen chance */ 100, 0.25, \
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/* Lifetime */ Inf, \
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/* Prune speed threshold */ 0.5, \
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/* Base color */ VEC4(0.6, 0.1, 0.1, 0.05), \
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/* Dry color factor */ VEC4(0.4, 0.4, 0.4, 1) \
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) \
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X( \
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/* Name */ BloodDebris, \
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/* Flags */ V_ParticleFlag_StainWhenPruned, \
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/* Layer */ V_ParticleLayer_Mid, \
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/* Stain rate, pen chance */ 30, 0, \
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/* Lifetime */ Inf, \
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/* Prune speed threshold */ 0.01, \
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/* Base color */ VEC4(0.5, 0.1, 0.1, 0.8), \
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/* Dry color factor */ VEC4(1, 1, 1, 1) \
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) \
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X( \
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/* Name */ Debris, \
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/* Flags */ V_ParticleFlag_StainWhenPruned, \
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/* Layer */ V_ParticleLayer_Mid, \
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/* Stain rate, pen chance */ 0, 0, \
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/* Lifetime */ Inf, \
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/* Prune speed threshold */ 0.01, \
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/* Base color */ VEC4(0.4, 0.3, 0.2, 1), \
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/* Dry color factor */ VEC4(1, 1, 1, 1) \
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) \
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X( \
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/* Name */ Fire, \
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/* Flags */ V_ParticleFlag_StainWhenPruned, \
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/* Layer */ V_ParticleLayer_Mid, \
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/* Stain rate, pen chance */ 0, 0, \
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/* Lifetime */ Inf, \
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/* Prune speed threshold */ 0.1, \
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/* Base color */ VEC4(2, 0.5, 0, 1), \
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/* Dry color factor */ VEC4(0.2, 0.1, 0.0, 1) \
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) \
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\
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/* Air particles */ \
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X( \
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/* Name */ BulletTrail, \
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/* Flags */ V_ParticleFlag_OnlyCollideWithWalls | V_ParticleFlag_GasBlend, \
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/* Layer */ V_ParticleLayer_Mid, \
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/* Stain rate, pen chance */ 0, 0, \
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/* Lifetime */ 0.075, \
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/* Prune speed threshold */ 0.01, \
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/* Base color */ VEC4(0.8, 0.6, 0.2, 0.25), \
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/* Dry color factor */ VEC4(1, 1, 1, 1) \
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) \
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X( \
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/* Name */ Smoke, \
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/* Flags */ V_ParticleFlag_OnlyCollideWithWalls | V_ParticleFlag_GasBlend, \
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/* Layer */ V_ParticleLayer_Air, \
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/* Stain rate, pen chance */ 0, 0, \
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/* Lifetime */ Inf, \
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/* Prune speed threshold */ 0.01, \
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/* Base color */ VEC4(0.25, 0.25, 0.25, 0.75), \
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/* Dry color factor */ VEC4(1, 1, 1, 1) \
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) \
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\
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/* Test particles */ \
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X( \
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/* Name */ Test, \
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/* Flags */ V_ParticleFlag_None, \
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/* Layer */ V_ParticleLayer_Mid, \
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/* Stain rate, pen chance */ 0, 0, \
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/* Lifetime */ Inf, \
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/* Prune speed threshold */ 0.01, \
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/* Base color */ VEC4(1, 1, 0, 1), \
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/* Dry color factor */ VEC4(1, 1, 1, 1) \
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) \
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/* ----------------------------------------------------------------------------------------------------------------------------------- */
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Enum(V_ParticleKind)
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{
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#define X(name, ...) V_ParticleKind_##name,
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V_ParticlesXList(X)
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#undef X
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V_ParticleKind_COUNT,
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};
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Struct(V_Emitter)
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{
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V_ParticleKind kind;
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u32 first_particle_seq;
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u32 count;
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Rng2 pos;
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Rng speed;
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Rng angle;
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};
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// TODO: Pack this efficiently
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Struct(V_Particle)
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{
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i32 kind; // If >= 0, then this maps to V_ParticleKind. Otherwise it represent a particle to be initialized using emitter at index [abs(kind) - 1]
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u32 origin_occluder;
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u32 prev_occluder; // TODO: Remove this
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f32 life;
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f32 stain_accum;
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u32 cells_count;
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Vec2 pos;
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Vec2 velocity;
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};
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Struct(V_ParticleDesc)
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{
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V_ParticleKind kind;
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V_ParticleFlag flags;
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V_ParticleLayer layer;
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f32 stain_rate;
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f32 pen_rate;
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f32 lifetime;
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f32 prune_speed_threshold;
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Vec4 base_color;
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Vec4 dry_factor;
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};
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#if IsCpu
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Struct(V_EmitterNode)
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{
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V_EmitterNode *next;
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V_Emitter emitter;
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};
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#endif
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////////////////////////////////////////////////////////////
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//~ Quad types
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Enum(V_QuadFlag)
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{
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V_QuadFlag_None = 0,
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};
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Struct(V_Quad)
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{
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V_QuadFlag flags;
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u32 occluder_id;
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Affine quad_uv_to_world_af;
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G_Texture2DRef tex;
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Rng2 tex_slice_uv;
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};
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////////////////////////////////////////////////////////////
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//~ Debug vert types
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Struct(V_DVert)
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{
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Vec2 pos;
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Vec4 color_lin;
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};
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////////////////////////////////////////////////////////////
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//~ State types
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Struct(V_TileDesc)
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{
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G_Texture2DRef tex;
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Rng2 tex_slice_uv;
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};
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Enum(V_SelectionMode)
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{
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V_SelectionMode_Tile,
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};
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Enum(V_EditMode)
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{
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V_EditMode_Tile,
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V_EditMode_Prefab,
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};
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Struct(V_Affines)
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{
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// World <-> screen (raw)
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Affine world_to_screen_raw;
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Affine screen_to_world_raw;
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// World <-> screen
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Affine world_to_screen;
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Affine screen_to_world;
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// World <-> shade
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Affine world_to_shade;
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Affine shade_to_world;
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// Shade <-> screen
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Affine shade_to_screen;
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Affine screen_to_shade;
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// World <-> cell
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Affine world_to_cell;
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Affine cell_to_world;
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// World <-> tile
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Affine world_to_tile;
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Affine tile_to_world;
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};
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Struct(V_SharedFrame)
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{
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//- Time
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i64 tick;
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i64 time_ns;
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i64 dt_ns;
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f32 dt;
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//- Modes
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// TODO: Move to shader-constant flags
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b32 tiles_dirty;
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b32 should_clear_particles;
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b32 should_tone_map;
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b32 is_looking;
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b32 is_moving;
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b32 is_editing;
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b32 ui_debug;
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b32 show_console;
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b32 is_selecting;
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b32 is_panning;
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b32 has_mouse_focus;
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b32 has_keyboard_focus;
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//- Editor state
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V_EditMode edit_mode;
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V_SelectionMode selection_mode;
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P_TileKind equipped_tile;
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P_PrefabKind equipped_prefab;
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Vec2 world_selection_start;
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Vec2 edit_camera_pos;
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f32 edit_camera_zoom;
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//- Camera
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i32 zooms;
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f32 camera_lerp_rate;
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Vec2 camera_pos;
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f32 camera_zoom;
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//- Dims
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Vec2 screen_dims;
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Vec2 shade_dims;
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//- Affines
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V_Affines af;
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//- Cursor
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Vec2 screen_cursor;
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Vec2 shade_cursor;
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Vec2 world_cursor;
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Rng2 screen_selection;
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Rng2 shade_selection;
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Rng2 world_selection;
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//- Crosshair
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Vec2 world_guy_origin;
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Vec2 world_crosshair_base;
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Vec2 world_crosshair;
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Vec2 screen_crosshair;
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Vec2 shade_crosshair;
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//- Control
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Vec2 move;
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Vec2 look;
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f32 fire_held;
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f32 fire_presses;
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f32 roll_presses;
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//- Gpu data
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G_SamplerStateRef basic_samplers[G_BasicSamplerKind_COUNT];
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V_TileDesc tile_descs[P_TileKind_COUNT];
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G_Texture2DRef tiles;
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f32 backdrop_parallax;
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G_Texture2DRef backdrop_src;
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G_Texture2DRef backdrop_mips[G_MaxMips];
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G_Texture2DRef screen;
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G_Texture2DRef shade;
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G_Texture2DRef albedo;
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G_Texture2DRef bloom_mips[G_MaxMips];
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u32 emitters_count;
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G_StructuredBufferRef emitters;
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G_StructuredBufferRef particles;
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G_Texture2DRef stains;
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G_Texture2DRef dry_stains;
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G_Texture2DRef drynesses;
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G_Texture2DRef occluders;
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G_Texture2DRef particle_cells[V_ParticleLayer_COUNT];
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G_Texture2DRef particle_densities[V_ParticleLayer_COUNT];
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G_StructuredBufferRef dverts;
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G_StructuredBufferRef quads;
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};
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////////////////////////////////////////////////////////////
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//~ Helpers
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V_ParticleDesc V_DescFromParticleKind(V_ParticleKind kind);
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