311 lines
9.6 KiB
Plaintext
311 lines
9.6 KiB
Plaintext
Pipeline_Binding :: struct {
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pipeline : sg_pipeline;
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bind : sg_bindings;
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}
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g_specular_lut : sg_image;
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gPipelines : struct {
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// Arbitrary triangle rendering for rendering 2D things on the screen.
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// Used for UI rendering.
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arbtri : Pipeline_Binding;
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// Trixel rendering. Used for Trile editor rendering, in-game triles are rendered from
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// generated meshes.
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trixel : Pipeline_Binding;
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// Sky rendering.
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sky : Pipeline_Binding;
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trile : Pipeline_Binding;
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}
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create_pipelines :: () {
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create_arbtri_pipeline();
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create_trixel_pipeline();
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create_trile_pipeline();
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create_sky_pipeline();
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}
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TRIXEL_SIZE_HALF : float : 1.0/32.0;
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TRIXEL_SIZE : float : 1.0/16.0;
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gArbtriMem : [100000*3*9]float;
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Position_Color :: struct {
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pos: Vector4;
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col: Vector4;
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}
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create_trixel_pipeline :: () {
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pipeline: sg_pipeline_desc;
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shader_desc := trixel_shader_desc(sg_query_backend());
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pipeline.shader = sg_make_shader(*shader_desc);
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pipeline.layout.buffers[0].stride = 4*3;
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pipeline.layout.buffers[1].stride = 4*3;
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pipeline.layout.buffers[2].step_func = .PER_INSTANCE;
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pipeline.layout.attrs[ATTR_trixel_position] = .{ format = .FLOAT3, buffer_index = 0 };
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pipeline.layout.attrs[ATTR_trixel_normal] = .{ format = .FLOAT3, buffer_index = 1 };
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pipeline.layout.attrs[ATTR_trixel_inst] = .{ format = .FLOAT4, buffer_index = 2 };
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pipeline.layout.attrs[ATTR_trixel_inst_col] = .{ format = .FLOAT4, buffer_index = 2 };
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pipeline.index_type = .UINT16;
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pipeline.depth = .{
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write_enabled = true,
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compare = .LESS_EQUAL,
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};
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color_state := sg_color_target_state.{
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pixel_format = .RGBA8,
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blend = .{
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enabled = true,
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src_factor_rgb = .SRC_ALPHA,
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dst_factor_rgb = .ONE_MINUS_SRC_ALPHA
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}
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};
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vertices : [24]Vector3 = .[
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.{-TRIXEL_SIZE/2, -TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, -TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, -TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, -TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, -TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, -TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, -TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, -TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, -TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{TRIXEL_SIZE/2, -TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, -TRIXEL_SIZE/2, -TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, -TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, TRIXEL_SIZE/2, TRIXEL_SIZE/2},
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.{-TRIXEL_SIZE/2, TRIXEL_SIZE/2, -TRIXEL_SIZE/2}
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];
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normals : [24]Vector3 = .[
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.{0.0, 0.0, 1.0},
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.{0.0, 0.0, 1.0},
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.{0.0, 0.0, 1.0},
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.{0.0, 0.0, 1.0},
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.{0.0, 0.0,-1.0},
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.{0.0, 0.0,-1.0},
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.{0.0, 0.0,-1.0},
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.{0.0, 0.0,-1.0},
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.{0.0, 1.0, 0.0},
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.{0.0, 1.0, 0.0},
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.{0.0, 1.0, 0.0},
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.{0.0, 1.0, 0.0},
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.{0.0,-1.0, 0.0},
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.{0.0,-1.0, 0.0},
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.{0.0,-1.0, 0.0},
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.{0.0,-1.0, 0.0},
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.{1.0, 0.0, 0.0},
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.{1.0, 0.0, 0.0},
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.{1.0, 0.0, 0.0},
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.{1.0, 0.0, 0.0},
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.{-1.0, 0.0, 0.0},
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.{-1.0, 0.0, 0.0},
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.{-1.0, 0.0, 0.0},
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.{-1.0, 0.0, 0.0}
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];
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k : u16 = 0;
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i : u16 = 0;
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indices : [36]u16;
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while i < 36 {
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indices[i] = 4*k;
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indices[i + 1] = 4*k + 1;
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indices[i + 2] = 4*k + 2;
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indices[i + 3] = 4*k;
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indices[i + 4] = 4*k + 2;
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indices[i + 5] = 4*k + 3;
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k += 1;
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i += 6;
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}
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pipeline.color_count = 1;
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pipeline.colors[0] = color_state;
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gPipelines.trixel.pipeline = sg_make_pipeline(*pipeline);
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ibuffer := sg_buffer_desc.{ type = .INDEXBUFFER, data = .{ ptr = indices.data, size = 36 * 2 } };
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vbuffer := sg_buffer_desc.{ data = .{ ptr = vertices.data, size = 24 * 3 * 4 } };
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nbuffer := sg_buffer_desc.{ data = .{ ptr = normals.data, size = 24 * 3 * 4 } };
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instance_buffer := sg_buffer_desc.{ usage = .STREAM, size = 4096 * size_of(Position_Color)};
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gPipelines.trixel.bind.index_buffer = sg_make_buffer(*ibuffer);
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gPipelines.trixel.bind.vertex_buffers[0] = sg_make_buffer(*vbuffer);
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gPipelines.trixel.bind.vertex_buffers[1] = sg_make_buffer(*nbuffer);
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gPipelines.trixel.bind.vertex_buffers[2] = sg_make_buffer(*instance_buffer);
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}
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create_trile_pipeline :: () {
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pipeline: sg_pipeline_desc;
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shader_desc := trile_shader_desc(sg_query_backend());
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pipeline.shader = sg_make_shader(*shader_desc);
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pipeline.layout.buffers[0].stride = 4*3;
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pipeline.layout.buffers[1].stride = 4*3;
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pipeline.layout.buffers[3].step_func = .PER_INSTANCE;
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instance_buffer := sg_buffer_desc.{ usage = .STREAM, size = 4096 * 4 * 4};
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pipeline.layout.attrs[ATTR_trile_position] = .{ format = .FLOAT3, buffer_index = 0 };
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pipeline.layout.attrs[ATTR_trile_normal] = .{ format = .FLOAT3, buffer_index = 1 };
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pipeline.layout.attrs[ATTR_trile_centre] = .{ format = .FLOAT3, buffer_index = 2 };
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pipeline.layout.attrs[ATTR_trile_instance] = .{ format = .MAT4, buffer_index = 3 };
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pipeline.depth = .{
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write_enabled = true,
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compare = .LESS_EQUAL,
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};
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color_state := sg_color_target_state.{
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pixel_format = .RGBA8,
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blend = .{
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enabled = true,
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src_factor_rgb = .SRC_ALPHA,
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dst_factor_rgb = .ONE_MINUS_SRC_ALPHA
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}
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};
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pipeline.color_count = 1;
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pipeline.colors[0] = color_state;
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gPipelines.trile.pipeline = sg_make_pipeline(*pipeline);
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gPipelines.trile.bind.samplers[0] = sg_make_sampler(*(sg_sampler_desc.{
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wrap_u = .CLAMP_TO_EDGE,
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wrap_v = .CLAMP_TO_EDGE,
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min_filter = .NEAREST,
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mag_filter = .NEAREST,
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}));
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gPipelines.trile.bind.vertex_buffers[3] = sg_make_buffer(*instance_buffer);
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}
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create_sky_pipeline :: () {
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pipeline: sg_pipeline_desc;
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shader_desc := sky_shader_desc(sg_query_backend());
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pipeline.shader = sg_make_shader(*shader_desc);
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pipeline.layout.buffers[0].stride = 4*3;
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pipeline.layout.attrs[ATTR_sky_position] = .{ format = .FLOAT3, buffer_index = 0 };
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pipeline.index_type = .UINT16;
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pipeline.depth = .{
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write_enabled = true,
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compare = .LESS_EQUAL,
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};
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color_state := sg_color_target_state.{
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pixel_format = .RGBA8,
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blend = .{
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enabled = true,
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src_factor_rgb = .SRC_ALPHA,
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dst_factor_rgb = .ONE_MINUS_SRC_ALPHA
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}
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};
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vertices : [24]Vector3 = .[
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.{-1, -1, 1},
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.{1, -1, 1},
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.{1, 1, 1},
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.{-1, 1, 1},
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.{-1, -1, -1},
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.{-1, 1, -1},
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.{1, 1, -1},
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.{1, -1, -1},
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.{-1, 1, -1},
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.{-1, 1, 1},
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.{1, 1, 1},
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.{1, 1, -1},
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.{-1, -1, -1},
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.{1, -1, -1},
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.{1, -1, 1},
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.{-1, -1, 1},
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.{1, -1, -1},
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.{1, 1, -1},
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.{1, 1, 1},
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.{1, -1, 1},
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.{-1, -1, -1},
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.{-1, -1, 1},
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.{-1, 1, 1},
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.{-1, 1, -1}
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];
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k : u16 = 0;
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i : u16 = 0;
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indices : [36]u16;
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while i < 36 {
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indices[i] = 4*k;
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indices[i + 1] = 4*k + 1;
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indices[i + 2] = 4*k + 2;
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indices[i + 3] = 4*k;
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indices[i + 4] = 4*k + 2;
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indices[i + 5] = 4*k + 3;
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k += 1;
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i += 6;
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}
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pipeline.color_count = 1;
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pipeline.colors[0] = color_state;
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gPipelines.sky.pipeline = sg_make_pipeline(*pipeline);
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ibuffer := sg_buffer_desc.{ type = .INDEXBUFFER, data = .{ ptr = indices.data, size = 36 * 2 } };
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vbuffer := sg_buffer_desc.{ data = .{ ptr = vertices.data, size = 24 * 3 * 4 } };
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gPipelines.sky.bind.index_buffer = sg_make_buffer(*ibuffer);
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gPipelines.sky.bind.vertex_buffers[0] = sg_make_buffer(*vbuffer);
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}
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create_arbtri_pipeline :: () {
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pipeline: sg_pipeline_desc;
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shader_desc := triangle_shader_desc(sg_query_backend());
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pipeline.shader = sg_make_shader(*shader_desc);
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pipeline.layout.attrs[ATTR_triangle_position] = .{ format = .FLOAT3 };
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pipeline.layout.attrs[ATTR_triangle_color0] = .{ format = .FLOAT4 };
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pipeline.layout.attrs[ATTR_triangle_uv] = .{ format = .FLOAT2 };
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color_state := sg_color_target_state.{
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pixel_format = .RGBA8,
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blend = .{
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enabled = true,
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src_factor_rgb = .SRC_ALPHA,
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dst_factor_rgb = .ONE_MINUS_SRC_ALPHA
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}
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};
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pipeline.color_count = 1;
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pipeline.colors[0] = color_state;
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gPipelines.arbtri.pipeline = sg_make_pipeline(*pipeline);
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buffer := sg_buffer_desc.{ usage = .DYNAMIC, size = size_of(type_of(gArbtriMem)) };
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gPipelines.arbtri.bind.vertex_buffers[0] = sg_make_buffer(*buffer);
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gPipelines.arbtri.bind.samplers[0] = sg_make_sampler(*(sg_sampler_desc.{
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wrap_u = .CLAMP_TO_EDGE,
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wrap_v = .CLAMP_TO_EDGE,
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min_filter = .NEAREST,
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mag_filter = .NEAREST,
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}));
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}
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