95 lines
3.7 KiB
Java
95 lines
3.7 KiB
Java
package sega.dreamcast.holly;
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import sega.dreamcast.holly.Holly;
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import sega.dreamcast.holly.CoreBits;
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import java.misc.Memory;
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public class Core {
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private Core() {
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}
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public static void init() {
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int fpu_cull_val = 0x3f800000; // 1.0f
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int fpu_perp_val = 0; // 0.0f
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int fpu_param_cfg = CoreBits.fpu_param_cfg__region_header_type__type_2
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| CoreBits.fpu_param_cfg__tsp_parameter_burst_threshold(31)
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| CoreBits.fpu_param_cfg__isp_parameter_burst_threshold(31)
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| CoreBits.fpu_param_cfg__pointer_burst_size(15)
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| CoreBits.fpu_param_cfg__pointer_first_burst_size(7);
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int half_offset = CoreBits.half_offset__tsp_texel_sampling_position__center
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| CoreBits.half_offset__tsp_pixel_sampling_position__center
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| CoreBits.half_offset__fpu_pixel_sampling_position__center;
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int isp_feed_cfg = CoreBits.isp_feed_cfg__cache_size_for_translucency(0x200)
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| CoreBits.isp_feed_cfg__punch_through_chunk_size(0x040);
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int span_sort_cfg = CoreBits.span_sort_cfg__span_sort_enable
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| CoreBits.span_sort_cfg__offset_sort_enable;
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int softreset = CoreBits.softreset__pipeline_soft_reset
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| CoreBits.softreset__ta_soft_reset;
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Memory.putU4(Holly.FPU_CULL_VAL, fpu_cull_val);
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Memory.putU4(Holly.FPU_PERP_VAL, fpu_perp_val);
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Memory.putU4(Holly.FPU_PARAM_CFG, fpu_param_cfg);
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Memory.putU4(Holly.HALF_OFFSET, half_offset);
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Memory.putU4(Holly.ISP_FEED_CFG, isp_feed_cfg);
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Memory.putU4(Holly.SPAN_SORT_CFG, span_sort_cfg);
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Memory.putU4(Holly.SOFTRESET, softreset);
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Memory.putU4(Holly.SOFTRESET, 0);
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}
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public static void start_render(int region_array_start,
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int isp_tsp_parameters_start,
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int background_start,
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int frame_address, // in pixels
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int frame_width // in pixels
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)
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{
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int background_offset = background_start - isp_tsp_parameters_start;
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int isp_backgnd_t = CoreBits.isp_backgnd_t__tag_address(background_offset / 4)
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| CoreBits.isp_backgnd_t__tag_offset(0)
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| CoreBits.isp_backgnd_t__skip(1);
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int isp_backgnd_d = 0x37c00000; // 0.00002
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int bytes_per_pixel = 2;
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int fb_w_linestride = (frame_width * bytes_per_pixel) >> 3;
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Memory.putU4(Holly.ISP_BACKGND_T, isp_backgnd_t);
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Memory.putU4(Holly.ISP_BACKGND_D, isp_backgnd_d);
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Memory.putU4(Holly.REGION_BASE, region_array_start);
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Memory.putU4(Holly.PARAM_BASE, isp_tsp_parameters_start);
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Memory.putU4(Holly.FB_W_LINESTRIDE, fb_w_linestride);
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Memory.putU4(Holly.FB_W_SOF1, frame_address);
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Memory.putU4(Holly.STARTRENDER, 1);
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}
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public static void wait_end_of_render_tsp() {
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int istnrm__end_of_render_tsp = 1 << 2;
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while ((Memory.getU4(0xa05f6900) & istnrm__end_of_render_tsp) == 0) {
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int isterr = Memory.getU4(0xa05f6908);
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if (isterr != 0) {
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System.out.print("isterr:");
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System.out.println(isterr);
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Memory.putU4(Holly.SOFTRESET, CoreBits.softreset__pipeline_soft_reset);
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Memory.putU4(Holly.SOFTRESET, 0);
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Memory.putU4(0xa05f6908, isterr);
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break;
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}
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};
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int istnrm = (1 << 2) // istnrm__end_of_render_tsp
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| (1 << 1) // istnrm__end_of_render_isp
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| (1 << 0); // istnrm__end_of_render_video;
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Memory.putU4(0xa05f6900, istnrm);
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}
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}
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