231 lines
8.7 KiB
Java
231 lines
8.7 KiB
Java
package example;
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import sega.dreamcast.holly.Background;
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import sega.dreamcast.holly.Core;
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import sega.dreamcast.holly.CoreBits;
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import sega.dreamcast.holly.Holly;
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import sega.dreamcast.holly.RegionArray;
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import sega.dreamcast.holly.TABits;
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import sega.dreamcast.holly.TAFIFOPolygonConverter;
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import sega.dreamcast.holly.TAParameter;
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import sega.dreamcast.holly.TextureMemoryAllocation;
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import sega.dreamcast.holly.ISPTSP;
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import sega.dreamcast.holly.TAVertexParameter;
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import sega.dreamcast.holly.TAGlobalParameter;
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import sega.dreamcast.systembus.Systembus;
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import sega.dreamcast.systembus.SystembusBits;
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import sega.dreamcast.MemoryMap;
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import model.UntitledModel;
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import model.Vec3;
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import model.FacePNT;
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import model.ModelObject;
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import java.misc.Memory;
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/*
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class Vec2 {
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float x;
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float y;
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}
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*/
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class DreamcastVideo2 {
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static final int framebuffer_width = 640;
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static final int framebuffer_height = 480;
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static TAGlobalParameter.polygon_type_0 gt0;
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static TAVertexParameter.polygon_type_0 vt0;
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static TAGlobalParameter.end_of_list eol;
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//static Vec2[] vtx;
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static float theta;
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static int colors[] = {
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5156825, 14787722, 9529551,
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4729017, 10213073, 15956866,
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5362273, 8377157, 9797796,
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11479204, 4042586, 16676239
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};
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static {
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int parameter_control_word = TAParameter.para_control__para_type__polygon_or_modifier_volume
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| TAParameter.para_control__list_type__opaque
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| TAParameter.obj_control__col_type__packed_color;
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int isp_tsp_instruction_word = ISPTSP.isp_tsp_instruction_word__depth_compare_mode__greater
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| ISPTSP.isp_tsp_instruction_word__culling_mode__no_culling;
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int tsp_instruction_word = ISPTSP.tsp_instruction_word__src_alpha_instr__one
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| ISPTSP.tsp_instruction_word__dst_alpha_instr__zero
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| ISPTSP.tsp_instruction_word__fog_control__no_fog;
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int texture_control_word = 0;
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int data_size_for_sort_dma = 0;
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int next_address_for_sort_dma = 0;
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gt0 = new TAGlobalParameter.polygon_type_0(parameter_control_word,
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isp_tsp_instruction_word,
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tsp_instruction_word,
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texture_control_word,
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data_size_for_sort_dma,
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next_address_for_sort_dma);
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vt0 = new TAVertexParameter.polygon_type_0(0, // parameter_control_word
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0.0f, // x
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0.0f, // y
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0.1f, // z
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0); // color
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eol = new TAGlobalParameter.end_of_list(TAParameter.para_control__para_type__end_of_list);
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/*
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vtx = new Vec2[3];
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for (int i = 0; i < 3; i++)
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vtx[i] = new Vec2();
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vtx[0].x = 0.0f;
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vtx[0].y = 1.0f;
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vtx[1].x = 0.866025f;
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vtx[1].y = -0.5f;
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vtx[2].x = -0.866025f;
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vtx[2].y = -0.5f;
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*/
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}
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public static void transform_vertex(Vec3[] position, FacePNT pnt) {
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float px = position[pnt.position].x;
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float py = position[pnt.position].y;
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float pz = position[pnt.position].z;
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//px *= 0.5;
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//py *= 0.5;
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//pz *= 0.5;
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float x0 = px * Math.cos(theta) - py * Math.sin(theta);
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float y0 = px * Math.sin(theta) + py * Math.cos(theta);
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float z0 = pz;
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float theta2 = theta / 2.0f;
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float x1 = x0 * Math.cos(theta2) - z0 * Math.sin(theta2);
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float y1 = y0;
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float z1 = x0 * Math.sin(theta2) + z0 * Math.cos(theta2);
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// camera transform
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float z2 = 3f + z1;
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// perspective
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float x2 = x1 / z2;
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float y2 = y1 / z2;
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// screen space
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float x = x2 * 240f + 320f;
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float y = -y2 * 240f + 240f;
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float z = 1.0f / z2;
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DreamcastVideo2.vt0.x = x;
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DreamcastVideo2.vt0.y = y;
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DreamcastVideo2.vt0.z = z;
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}
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public static void transform_triangle(int n, Vec3[] position, FacePNT[] face) {
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for (int i = 0; i < 3; i++) {
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DreamcastVideo2.vt0.parameter_control_word = TAParameter.para_control__para_type__vertex_parameter;
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if (i == 2)
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DreamcastVideo2.vt0.parameter_control_word |= TAParameter.para_control__end_of_strip;
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transform_vertex(position, face[i]);
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DreamcastVideo2.vt0.base_color = colors[n];
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Memory.putSQ1(DreamcastVideo2.vt0, MemoryMap.ta_fifo_polygon_converter);
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}
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}
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public static void transfer_scene() {
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// global parameter
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Memory.putSQ1(DreamcastVideo2.gt0, MemoryMap.ta_fifo_polygon_converter);
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// vertex parameters
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ModelObject obj = UntitledModel.objects[0];
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for (int i = 0; i < obj.faces.length; i ++) {
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transform_triangle(i, UntitledModel.position, obj.faces[i]);
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}
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// end of list
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Memory.putSQ1(DreamcastVideo2.eol, MemoryMap.ta_fifo_polygon_converter);
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}
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public static void main() {
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Core.init();
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Core.fb_init(framebuffer_width, framebuffer_height);
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int ta_alloc =
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TABits.ta_alloc_ctrl__opb_mode__increasing_addresses
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| TABits.ta_alloc_ctrl__pt_opb__no_list
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| TABits.ta_alloc_ctrl__tm_opb__no_list
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| TABits.ta_alloc_ctrl__t_opb__no_list
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| TABits.ta_alloc_ctrl__om_opb__no_list
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| TABits.ta_alloc_ctrl__o_opb__8x4byte
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;
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RegionArray.OPBSize[] opb_size = {
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new RegionArray.OPBSize(8 * 4, // opaque
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0, // opaque_modifier_volume
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0, // translucent
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0, // translucent_modifier_volume
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0) // punch_through
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};
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int opb_size_total = opb_size[0].total();
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int num_render_passes = opb_size.length;
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RegionArray.region_array(framebuffer_width / 32,
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framebuffer_height / 32,
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opb_size,
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num_render_passes,
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TextureMemoryAllocation.region_array_start[0],
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TextureMemoryAllocation.object_list_start[0]);
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RegionArray.region_array(framebuffer_width / 32,
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framebuffer_height / 32,
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opb_size,
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num_render_passes,
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TextureMemoryAllocation.region_array_start[1],
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TextureMemoryAllocation.object_list_start[1]);
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int background_color = 0xff443300;
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Background.background(TextureMemoryAllocation.background_start[0],
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background_color);
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Background.background(TextureMemoryAllocation.background_start[1],
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background_color);
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int core = 0;
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int ta = 0;
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while (true) {
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// unpipelined render loop
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TAFIFOPolygonConverter.init(TextureMemoryAllocation.isp_tsp_parameters_start[ta],
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TextureMemoryAllocation.isp_tsp_parameters_end[ta],
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TextureMemoryAllocation.object_list_start[ta],
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TextureMemoryAllocation.object_list_end[ta],
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opb_size_total,
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ta_alloc,
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framebuffer_width / 32,
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framebuffer_height / 32);
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transfer_scene();
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TAFIFOPolygonConverter.wait_opaque_list();
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Core.start_render(TextureMemoryAllocation.region_array_start[ta],
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TextureMemoryAllocation.isp_tsp_parameters_start[ta],
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TextureMemoryAllocation.background_start[ta],
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TextureMemoryAllocation.framebuffer_start[core],
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framebuffer_width);
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Core.wait_end_of_render_tsp();
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while (!(CoreBits.spg_status__vsync(Memory.getU4(Holly.SPG_STATUS)) != 0));
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Memory.putU4(Holly.FB_R_SOF1, TextureMemoryAllocation.framebuffer_start[core]);
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while ((CoreBits.spg_status__vsync(Memory.getU4(Holly.SPG_STATUS)) != 0));
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core = (core + 1) % 1;
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theta += Math.DEGREES_TO_RADIANS;
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}
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}
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}
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