80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
#if SH_CPU
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#define SH_STRUCT(s) PACK(struct s)
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#define SH_DECL(t, n) struct CAT(sh_, t) n
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#define SH_ENTRY(rootsig) static
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#define SH_ASSERT_32BIT(s, n) CT_ASSERT((sizeof(s) / 4) == n)
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struct sh_uint { u32 v; };
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INLINE struct sh_uint sh_uint_from_u32(u32 v)
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{
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return (struct sh_uint) { .v = v };
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}
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struct sh_float { f32 v; };
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INLINE struct sh_float sh_float_from_f32(f32 v)
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{
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return (struct sh_float) { .v = v };
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}
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struct sh_float2 { f32 v[2]; };
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INLINE struct sh_float2 sh_float2_from_v2(struct v2 v)
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{
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return (struct sh_float2) { .v[0] = v.x, .v[1] = v.y };
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}
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struct sh_float4x4 { f32 v[4][4]; };
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INLINE struct sh_float4x4 sh_float4x4_from_mat4x4(struct mat4x4 v)
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{
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struct sh_float4x4 res;
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CT_ASSERT(sizeof(res) == sizeof(v));
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MEMCPY(&res, v.e, sizeof(res));
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return res;
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}
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struct sh_float2x3 { f32 v[2][3]; };
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INLINE struct sh_float2x3 sh_float2x3_from_xform(struct xform v)
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{
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struct sh_float2x3 res;
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CT_ASSERT(sizeof(res) == sizeof(v));
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MEMCPY(&res, &v, sizeof(res));
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return res;
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}
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#else
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#define SH_STRUCT(s) struct s
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#define SH_DECL(t, n) t n
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#define SH_ENTRY(rootsig) [RootSignature(rootsig)]
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#define SH_ASSERT_32BIT(s, n)
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#endif
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/* ========================== *
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* Blit shader structures
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* ========================== */
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SH_STRUCT(sh_blit_constants {
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SH_DECL(float4x4, projection);
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SH_DECL(uint, texture_id);
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});
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SH_ASSERT_32BIT(struct sh_blit_constants, 17); /* Expected 32bit root constant size in shader */
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/* ========================== *
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* Material shader structures
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* ========================== */
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SH_STRUCT(sh_material_constants {
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SH_DECL(float4x4, projection);
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});
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SH_ASSERT_32BIT(struct sh_material_constants, 16); /* Expected 32bit root constant size in shader */
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SH_STRUCT(sh_material_instance {
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SH_DECL(float2x3, xf);
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SH_DECL(float2, uv0);
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SH_DECL(float2, uv1);
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SH_DECL(uint, texture_nuri);
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SH_DECL(uint, tint_srgb);
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SH_DECL(float, emittance);
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});
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