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JavaCubeMemory: slightly incorrect pipelined rendering

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This commit is contained in:
Zack Buhman 2025-01-22 00:09:47 -06:00
parent ca5024d14f
commit 0fb917f472
2 changed files with 56 additions and 22 deletions
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62
classes/example/JavaCubeMemory.java
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@ -53,7 +53,7 @@ public class JavaCubeMemory {
| ISPTSP.tsp_instruction_word__texture_v_size__1024
| ISPTSP.tsp_instruction_word__use_alpha;
static final int texture_address = TextureMemoryAllocation.texture_regions[1][0] + 512;
static final int texture_address = TextureMemoryAllocation.texture_regions[0][0] + 512;
static final int texture_control_word = ISPTSP.texture_control_word__pixel_format__4444
| ISPTSP.texture_control_word__scan_order__non_twiddled
| ISPTSP.texture_control_word__texture_address(texture_address / 8);
@ -142,20 +142,13 @@ public class JavaCubeMemory {
}
public static void transfer_textures() {
int texture = MemoryMap.texture_memory64 + TextureMemoryAllocation.texture_regions[1][0] + 512;
int texture = MemoryMap.texture_memory64 + TextureMemoryAllocation.texture_regions[0][0] + 512;
int length = 512 * 512 * 2 * 2 / 4;
int address = 0xac400000;
for (int i = 0; i < length; i++) {
int value = Memory.getU4(address);
Memory.putU4(texture, value);
if ((i & 2047) == 0) {
System.out.print(i);
System.out.print(' ');
System.out.print(address);
System.out.print(' ');
System.out.print(texture);
}
address += 4;
texture += 4;
}
@ -163,6 +156,11 @@ public class JavaCubeMemory {
public static void main() {
System.out.println("main1");
System.out.println("transfer_textures");
transfer_textures();
System.out.println("transfer_textures2");
int ta_alloc =
TABits.ta_alloc_ctrl__opb_mode__increasing_addresses
| TABits.ta_alloc_ctrl__pt_opb__no_list
@ -205,10 +203,6 @@ public class JavaCubeMemory {
Core.init();
System.out.println("transfer_textures");
transfer_textures();
System.out.println("transfer_textures2");
VideoOutput.set_framebuffer_resolution(640, 480);
VideoOutput.set_mode(VideoOutputMode.vga);
@ -217,8 +211,37 @@ public class JavaCubeMemory {
System.out.println("main");
int framebuffer_tiles_width = framebuffer_width / 32;
int framebuffer_tiles_height = framebuffer_height / 32;
// prime
for (int i = 0; i < 2; i++) {
TAFIFOPolygonConverter.init(TextureMemoryAllocation.isp_tsp_parameters_start[i],
TextureMemoryAllocation.isp_tsp_parameters_end[i],
TextureMemoryAllocation.object_list_start[i],
TextureMemoryAllocation.object_list_end[i],
opb_size_total,
ta_alloc,
framebuffer_tiles_width,
framebuffer_tiles_height);
transfer_cube_scene();
if (i == 0)
TAFIFOPolygonConverter.wait_translucent_list();
}
for (int i = 0; i < 2; i++) {
Core.start_render(TextureMemoryAllocation.region_array_start[core],
TextureMemoryAllocation.isp_tsp_parameters_start[core],
TextureMemoryAllocation.background_start[1],
TextureMemoryAllocation.framebuffer_start[i],
framebuffer_width);
if (i == 0)
Core.wait_end_of_render_tsp();
}
while (true) {
ta = (core + 1) & 1;
// unpipelined render loop
TAFIFOPolygonConverter.wait_translucent_list();
TAFIFOPolygonConverter.init(TextureMemoryAllocation.isp_tsp_parameters_start[ta],
TextureMemoryAllocation.isp_tsp_parameters_end[ta],
TextureMemoryAllocation.object_list_start[ta],
@ -228,20 +251,19 @@ public class JavaCubeMemory {
framebuffer_tiles_width,
framebuffer_tiles_height);
transfer_cube_scene();
TAFIFOPolygonConverter.wait_translucent_list();
Core.start_render(TextureMemoryAllocation.region_array_start[ta],
TextureMemoryAllocation.isp_tsp_parameters_start[ta],
TextureMemoryAllocation.background_start[1],
Core.wait_end_of_render_tsp();
Core.start_render(TextureMemoryAllocation.region_array_start[core],
TextureMemoryAllocation.isp_tsp_parameters_start[core],
TextureMemoryAllocation.background_start[core],
TextureMemoryAllocation.framebuffer_start[core],
framebuffer_width);
Core.wait_end_of_render_tsp();
while (!(CoreBits.spg_status__vsync(Memory.getU4(Holly.SPG_STATUS)) != 0));
Memory.putU4(Holly.FB_R_SOF1, TextureMemoryAllocation.framebuffer_start[core]);
while ((CoreBits.spg_status__vsync(Memory.getU4(Holly.SPG_STATUS)) != 0));
Memory.putU4(Holly.FB_R_SOF1, TextureMemoryAllocation.framebuffer_start[ta]);
core = (core + 1) & 1;
core = ta;
theta += Math.DEGREES_TO_RADIANS;
}

16
classes/sega/dreamcast/holly/TextureMemoryAllocation.java
View File

@ -2,6 +2,7 @@ package sega.dreamcast.holly;
public class TextureMemoryAllocation {
/* frame A frame B */
/*
public static final int[] isp_tsp_parameters_start = { 0x000000, 0x080000 };
public static final int[] isp_tsp_parameters_end = { 0x07ffc0, 0x0fffc0 };
public static final int[] background_start = { 0x07ffc0, 0x0fffc0 };
@ -12,10 +13,21 @@ public class TextureMemoryAllocation {
public static final int[] region_array_end = { 0x210000, 0x220000 };
public static final int[] framebuffer_start = { 0x220000, 0x2c8c00 }; // 720 x 480 @ 16bpp
public static final int[] framebuffer_end = { 0x2c8c00, 0x371800 }; // 720 x 480 @ 16bpp
*/
public static final int[] isp_tsp_parameters_start = { 0x000000, 0x400000 };
public static final int[] isp_tsp_parameters_end = { 0x0fffc0, 0x4fffc0 };
public static final int[] background_start = { 0x0fffc0, 0x4fffc0 };
public static final int[] background_end = { 0x100000, 0x500000 };
public static final int[] object_list_start = { 0x100000, 0x500000 };
public static final int[] object_list_end = { 0x200000 - 0x20, 0x600000 - 0x20 };
public static final int[] region_array_start = { 0x296000, 0x696000 };
public static final int[] region_array_end = { 0x2a6000, 0x6a0000 };
public static final int[] framebuffer_start = { 0x200000, 0x600000 }; // 640 x 480 @ 16bpp
public static final int[] framebuffer_end = { 0x296000, 0x696000 }; // 640 x 480 @ 16bpp
public static final int[][] texture_regions = {
/* start end */
{ 0x200000, 0x400000 },
{ 0x600000, 0x800000 },
{ 0x54c000, 0x400000 },
{ 0x54c000, 0x800000 },
};
}