From b6cf1d104da53ec9c30dc45c35d9de48812f0afc Mon Sep 17 00:00:00 2001
From: Xander Swan <email>
Date: Wed, 3 Dec 2025 09:52:13 -0500
Subject: Initial commit

---
 src/draw/default_shader.odin | 538 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 538 insertions(+)
 create mode 100644 src/draw/default_shader.odin

(limited to 'src/draw/default_shader.odin')

diff --git a/src/draw/default_shader.odin b/src/draw/default_shader.odin
new file mode 100644
index 0000000..eca5c62
--- /dev/null
+++ b/src/draw/default_shader.odin
@@ -0,0 +1,538 @@
+package draw
+import sg "shared:sokol/gfx"
+/*
+    #version:1# (machine generated, don't edit!)
+
+    Generated by sokol-shdc (https://github.com/floooh/sokol-tools)
+
+    Cmdline:
+        sokol-shdc -i src/draw/default.glsl -o src/draw/default_shader.odin -l glsl430:metal_macos:hlsl5 -f sokol_odin
+
+    Overview:
+    =========
+    Shader program: 'default':
+        Get shader desc: default_shader_desc(sg.query_backend())
+        Vertex Shader: vs
+        Fragment Shader: fs
+        Attributes:
+            ATTR_default_vposition => 0
+            ATTR_default_vuv => 1
+            ATTR_default_vcolor => 2
+    Bindings:
+        Uniform block 'default_vs_params':
+            Odin struct: Default_Vs_Params
+            Bind slot: UB_default_vs_params => 0
+        Texture 'tex':
+            Image type: ._2D
+            Sample type: .FLOAT
+            Multisampled: false
+            Bind slot: VIEW_tex => 0
+        Sampler 'tex_samp':
+            Type: .FILTERING
+            Bind slot: SMP_tex_samp => 0
+*/
+ATTR_default_vposition :: 0
+ATTR_default_vuv :: 1
+ATTR_default_vcolor :: 2
+UB_default_vs_params :: 0
+VIEW_tex :: 0
+SMP_tex_samp :: 0
+Default_Vs_Params :: struct #align(16) {
+    using _: struct #packed {
+        projection: [16]f32,
+    },
+}
+/*
+    #version 430
+
+    uniform vec4 default_vs_params[4];
+    layout(location = 0) in vec2 vposition;
+    layout(location = 0) out vec4 fcolor;
+    layout(location = 2) in vec4 vcolor;
+    layout(location = 1) out vec2 fuv;
+    layout(location = 1) in vec2 vuv;
+
+    void main()
+    {
+        gl_Position = mat4(default_vs_params[0], default_vs_params[1], default_vs_params[2], default_vs_params[3]) * vec4(vposition, 0.0, 1.0);
+        fcolor = vcolor;
+        fuv = vuv;
+    }
+
+*/
+@(private="file")
+vs_source_glsl430 := [428]u8 {
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+}
+/*
+    #version 430
+
+    layout(binding = 0) uniform sampler2D tex_tex_samp;
+
+    layout(location = 0) out vec4 out_color;
+    layout(location = 1) in vec2 fuv;
+    layout(location = 0) in vec4 fcolor;
+
+    void main()
+    {
+        out_color = texture(tex_tex_samp, fuv) * fcolor;
+    }
+
+*/
+@(private="file")
+fs_source_glsl430 := [251]u8 {
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+}
+/*
+    cbuffer default_vs_params : register(b0)
+    {
+        row_major float4x4 _19_projection : packoffset(c0);
+    };
+
+
+    static float4 gl_Position;
+    static float2 vposition;
+    static float4 fcolor;
+    static float4 vcolor;
+    static float2 fuv;
+    static float2 vuv;
+
+    struct SPIRV_Cross_Input
+    {
+        float2 vposition : TEXCOORD0;
+        float2 vuv : TEXCOORD1;
+        float4 vcolor : TEXCOORD2;
+    };
+
+    struct SPIRV_Cross_Output
+    {
+        float4 fcolor : TEXCOORD0;
+        float2 fuv : TEXCOORD1;
+        float4 gl_Position : SV_Position;
+    };
+
+    void vert_main()
+    {
+        gl_Position = mul(float4(vposition, 0.0f, 1.0f), _19_projection);
+        fcolor = vcolor;
+        fuv = vuv;
+    }
+
+    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
+    {
+        vposition = stage_input.vposition;
+        vcolor = stage_input.vcolor;
+        vuv = stage_input.vuv;
+        vert_main();
+        SPIRV_Cross_Output stage_output;
+        stage_output.gl_Position = gl_Position;
+        stage_output.fcolor = fcolor;
+        stage_output.fuv = fuv;
+        return stage_output;
+    }
+*/
+@(private="file")
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+    0x0a,0x7d,0x0a,0x00,
+}
+/*
+    Texture2D<float4> tex : register(t0);
+    SamplerState tex_samp : register(s0);
+
+    static float4 out_color;
+    static float2 fuv;
+    static float4 fcolor;
+
+    struct SPIRV_Cross_Input
+    {
+        float4 fcolor : TEXCOORD0;
+        float2 fuv : TEXCOORD1;
+    };
+
+    struct SPIRV_Cross_Output
+    {
+        float4 out_color : SV_Target0;
+    };
+
+    void frag_main()
+    {
+        out_color = tex.Sample(tex_samp, fuv) * fcolor;
+    }
+
+    SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
+    {
+        fuv = stage_input.fuv;
+        fcolor = stage_input.fcolor;
+        frag_main();
+        SPIRV_Cross_Output stage_output;
+        stage_output.out_color = out_color;
+        return stage_output;
+    }
+*/
+@(private="file")
+fs_source_hlsl5 := [614]u8 {
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+}
+/*
+    #include <metal_stdlib>
+    #include <simd/simd.h>
+
+    using namespace metal;
+
+    struct default_vs_params
+    {
+        float4x4 projection;
+    };
+
+    struct main0_out
+    {
+        float4 fcolor [[user(locn0)]];
+        float2 fuv [[user(locn1)]];
+        float4 gl_Position [[position]];
+    };
+
+    struct main0_in
+    {
+        float2 vposition [[attribute(0)]];
+        float2 vuv [[attribute(1)]];
+        float4 vcolor [[attribute(2)]];
+    };
+
+    vertex main0_out main0(main0_in in [[stage_in]], constant default_vs_params& _19 [[buffer(0)]])
+    {
+        main0_out out = {};
+        out.gl_Position = _19.projection * float4(in.vposition, 0.0, 1.0);
+        out.fcolor = in.vcolor;
+        out.fuv = in.vuv;
+        return out;
+    }
+
+*/
+@(private="file")
+vs_source_metal_macos := [648]u8 {
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+}
+/*
+    #include <metal_stdlib>
+    #include <simd/simd.h>
+
+    using namespace metal;
+
+    struct main0_out
+    {
+        float4 out_color [[color(0)]];
+    };
+
+    struct main0_in
+    {
+        float4 fcolor [[user(locn0)]];
+        float2 fuv [[user(locn1)]];
+    };
+
+    fragment main0_out main0(main0_in in [[stage_in]], texture2d<float> tex [[texture(0)]], sampler tex_samp [[sampler(0)]])
+    {
+        main0_out out = {};
+        out.out_color = tex.sample(tex_samp, in.fuv) * in.fcolor;
+        return out;
+    }
+
+*/
+@(private="file")
+fs_source_metal_macos := [448]u8 {
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+
+}
+default_shader_desc :: proc (backend: sg.Backend) -> sg.Shader_Desc {
+    desc: sg.Shader_Desc
+    desc.label = "default_shader"
+    #partial switch backend {
+    case .GLCORE:
+        desc.vertex_func.source = transmute(cstring)&vs_source_glsl430
+        desc.vertex_func.entry = "main"
+        desc.fragment_func.source = transmute(cstring)&fs_source_glsl430
+        desc.fragment_func.entry = "main"
+        desc.attrs[0].base_type = .FLOAT
+        desc.attrs[0].glsl_name = "vposition"
+        desc.attrs[1].base_type = .FLOAT
+        desc.attrs[1].glsl_name = "vuv"
+        desc.attrs[2].base_type = .FLOAT
+        desc.attrs[2].glsl_name = "vcolor"
+        desc.uniform_blocks[0].stage = .VERTEX
+        desc.uniform_blocks[0].layout = .STD140
+        desc.uniform_blocks[0].size = 64
+        desc.uniform_blocks[0].glsl_uniforms[0].type = .FLOAT4
+        desc.uniform_blocks[0].glsl_uniforms[0].array_count = 4
+        desc.uniform_blocks[0].glsl_uniforms[0].glsl_name = "default_vs_params"
+        desc.views[0].texture.stage = .FRAGMENT
+        desc.views[0].texture.image_type = ._2D
+        desc.views[0].texture.sample_type = .FLOAT
+        desc.views[0].texture.multisampled = false
+        desc.samplers[0].stage = .FRAGMENT
+        desc.samplers[0].sampler_type = .FILTERING
+        desc.texture_sampler_pairs[0].stage = .FRAGMENT
+        desc.texture_sampler_pairs[0].view_slot = 0
+        desc.texture_sampler_pairs[0].sampler_slot = 0
+        desc.texture_sampler_pairs[0].glsl_name = "tex_tex_samp"
+    case .D3D11:
+        desc.vertex_func.source = transmute(cstring)&vs_source_hlsl5
+        desc.vertex_func.d3d11_target = "vs_5_0"
+        desc.vertex_func.entry = "main"
+        desc.fragment_func.source = transmute(cstring)&fs_source_hlsl5
+        desc.fragment_func.d3d11_target = "ps_5_0"
+        desc.fragment_func.entry = "main"
+        desc.attrs[0].base_type = .FLOAT
+        desc.attrs[0].hlsl_sem_name = "TEXCOORD"
+        desc.attrs[0].hlsl_sem_index = 0
+        desc.attrs[1].base_type = .FLOAT
+        desc.attrs[1].hlsl_sem_name = "TEXCOORD"
+        desc.attrs[1].hlsl_sem_index = 1
+        desc.attrs[2].base_type = .FLOAT
+        desc.attrs[2].hlsl_sem_name = "TEXCOORD"
+        desc.attrs[2].hlsl_sem_index = 2
+        desc.uniform_blocks[0].stage = .VERTEX
+        desc.uniform_blocks[0].layout = .STD140
+        desc.uniform_blocks[0].size = 64
+        desc.uniform_blocks[0].hlsl_register_b_n = 0
+        desc.views[0].texture.stage = .FRAGMENT
+        desc.views[0].texture.image_type = ._2D
+        desc.views[0].texture.sample_type = .FLOAT
+        desc.views[0].texture.multisampled = false
+        desc.views[0].texture.hlsl_register_t_n = 0
+        desc.samplers[0].stage = .FRAGMENT
+        desc.samplers[0].sampler_type = .FILTERING
+        desc.samplers[0].hlsl_register_s_n = 0
+        desc.texture_sampler_pairs[0].stage = .FRAGMENT
+        desc.texture_sampler_pairs[0].view_slot = 0
+        desc.texture_sampler_pairs[0].sampler_slot = 0
+    case .METAL_MACOS:
+        desc.vertex_func.source = transmute(cstring)&vs_source_metal_macos
+        desc.vertex_func.entry = "main0"
+        desc.fragment_func.source = transmute(cstring)&fs_source_metal_macos
+        desc.fragment_func.entry = "main0"
+        desc.attrs[0].base_type = .FLOAT
+        desc.attrs[1].base_type = .FLOAT
+        desc.attrs[2].base_type = .FLOAT
+        desc.uniform_blocks[0].stage = .VERTEX
+        desc.uniform_blocks[0].layout = .STD140
+        desc.uniform_blocks[0].size = 64
+        desc.uniform_blocks[0].msl_buffer_n = 0
+        desc.views[0].texture.stage = .FRAGMENT
+        desc.views[0].texture.image_type = ._2D
+        desc.views[0].texture.sample_type = .FLOAT
+        desc.views[0].texture.multisampled = false
+        desc.views[0].texture.msl_texture_n = 0
+        desc.samplers[0].stage = .FRAGMENT
+        desc.samplers[0].sampler_type = .FILTERING
+        desc.samplers[0].msl_sampler_n = 0
+        desc.texture_sampler_pairs[0].stage = .FRAGMENT
+        desc.texture_sampler_pairs[0].view_slot = 0
+        desc.texture_sampler_pairs[0].sampler_slot = 0
+    }
+    return desc
+}
-- 
cgit v1.3-2-g0d8e