bilbo/dreamcast
1
0
Fork 0
Code Pull Requests Activity

example: add bear

Browse Source
This commit is contained in:
Zack Buhman 2025-04-02 16:19:50 -05:00
parent 9a2e97fdae
commit 1e2b725780
13 changed files with 51400 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

685
example/bear.cpp Normal file
View File

@ -0,0 +1,685 @@
#include <stdint.h>
#include "holly/background.hpp"
#include "holly/core.hpp"
#include "holly/core_bits.hpp"
#include "holly/holly.hpp"
#include "holly/isp_tsp.hpp"
#include "holly/region_array.hpp"
#include "holly/ta_bits.hpp"
#include "holly/ta_fifo_polygon_converter.hpp"
#include "holly/ta_global_parameter.hpp"
#include "holly/ta_parameter.hpp"
#include "holly/ta_vertex_parameter.hpp"
#include "holly/texture_memory_alloc3.hpp"
#include "holly/video_output.hpp"
#include "sh7091/sh7091.hpp"
#include "sh7091/sh7091_bits.hpp"
#include "sh7091/serial.hpp"
#include "sh7091/vbr.hpp"
#include "systembus.hpp"
#include "systembus_bits.hpp"
#include "memorymap.hpp"
#include "math/vec2.hpp"
#include "math/vec3.hpp"
#include "math/vec4.hpp"
#include "math/mat4x4.hpp"
using vec2 = vec<2, float>;
using vec3 = vec<3, float>;
using vec4 = vec<4, float>;
using mat4x4 = mat<4, 4, float>;
#include "model/model.h"
#include "model/bear/material.h"
#include "model/bear/model.h"
#include "model/bear/bear.data.h"
void vbr100()
{
serial::string("vbr100\n");
serial::string("expevt ");
serial::integer<uint16_t>(sh7091.CCN.EXPEVT);
serial::string("intevt ");
serial::integer<uint16_t>(sh7091.CCN.INTEVT);
serial::string("tra ");
serial::integer<uint16_t>(sh7091.CCN.TRA);
uint32_t spc;
uint32_t ssr;
asm volatile ("stc spc,%0" : "=r" (spc));
asm volatile ("stc ssr,%0" : "=r" (ssr));
serial::string("spc ");
serial::integer(spc);
serial::string("ssr ");
serial::integer(ssr);
while (1);
}
void vbr400()
{
serial::string("vbr400\n");
serial::string("expevt ");
serial::integer<uint16_t>(sh7091.CCN.EXPEVT);
serial::string("intevt ");
serial::integer<uint16_t>(sh7091.CCN.INTEVT);
serial::string("tra ");
serial::integer<uint16_t>(sh7091.CCN.TRA);
uint32_t spc;
uint32_t ssr;
asm volatile ("stc spc,%0" : "=r" (spc));
asm volatile ("stc ssr,%0" : "=r" (ssr));
serial::string("spc ");
serial::integer(spc);
serial::string("ssr ");
serial::integer(ssr);
while (1);
}
static int render_done = 0;
void vbr600()
{
if (sh7091.CCN.EXPEVT == 0 && sh7091.CCN.INTEVT == 0x320) {
uint32_t istnrm = system.ISTNRM;
uint32_t isterr = system.ISTERR;
if (isterr) {
serial::string("isterr: ");
serial::integer<uint32_t>(system.ISTERR);
}
if (istnrm & istnrm::end_of_render_tsp) {
system.ISTNRM = istnrm::end_of_render_tsp
| istnrm::end_of_render_isp
| istnrm::end_of_render_video;
render_done = 1;
return;
}
}
serial::string("vbr600\n");
serial::string("expevt ");
serial::integer<uint16_t>(sh7091.CCN.EXPEVT);
serial::string("intevt ");
serial::integer<uint16_t>(sh7091.CCN.INTEVT);
serial::string("tra ");
serial::integer<uint16_t>(sh7091.CCN.TRA);
serial::string("istnrm: ");
serial::integer<uint32_t>(system.ISTNRM);
serial::string("isterr: ");
serial::integer<uint32_t>(system.ISTERR);
uint32_t spc;
uint32_t ssr;
asm volatile ("stc spc,%0" : "=r" (spc));
asm volatile ("stc ssr,%0" : "=r" (ssr));
serial::string("spc ");
serial::integer(spc);
serial::string("ssr ");
serial::integer(ssr);
while (1);
}
void interrupt_init()
{
system.IML2NRM = 0;
system.IML2ERR = 0;
system.IML2EXT = 0;
system.IML4NRM = 0;
system.IML4ERR = 0;
system.IML4EXT = 0;
system.IML6NRM = 0;
system.IML6ERR = 0;
system.IML6EXT = 0;
system.ISTERR = 0xffffffff;
system.ISTNRM = 0xffffffff;
sh7091.CCN.INTEVT = 0;
sh7091.CCN.EXPEVT = 0;
uint32_t vbr = reinterpret_cast<uint32_t>(&__vbr_link_start) - 0x100;
serial::string("vbr ");
serial::integer<uint32_t>(vbr);
serial::string("vbr100 ");
serial::integer<uint32_t>(reinterpret_cast<uint32_t>(&vbr100));
asm volatile ("ldc %0,vbr"
:
: "r" (vbr));
uint32_t sr;
asm volatile ("stc sr,%0"
: "=r" (sr));
serial::string("sr ");
serial::integer<uint32_t>(sr);
sr &= ~sh::sr::bl; // BL
sr &= ~sh::sr::imask(15); // imask
serial::string("sr ");
serial::integer<uint32_t>(sr);
asm volatile ("ldc %0,sr"
:
: "r" (sr));
}
void global_polygon_type_0(ta_parameter_writer& writer,
uint32_t list,
uint32_t cull,
vec3 color)
{
const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
| list
| obj_control::col_type::packed_color
| obj_control::gouraud
;
const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
| cull;
const uint32_t tsp_instruction_word = tsp_instruction_word::fog_control::no_fog
| tsp_instruction_word::src_alpha_instr::one
| tsp_instruction_word::dst_alpha_instr::zero
;
const uint32_t texture_control_word = 0;
writer.append<ta_global_parameter::polygon_type_0>() =
ta_global_parameter::polygon_type_0(parameter_control_word,
isp_tsp_instruction_word,
tsp_instruction_word,
texture_control_word,
0, // offset color
0 // sort dma
);
}
void global_polygon_type_1(ta_parameter_writer& writer,
uint32_t texture_address,
uint32_t list,
uint32_t cull,
vec3 color)
{
const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
| list
| obj_control::col_type::intensity_mode_1
| obj_control::gouraud
| obj_control::texture
;
const uint32_t isp_tsp_instruction_word = isp_tsp_instruction_word::depth_compare_mode::greater
| cull;
const uint32_t tsp_instruction_word = tsp_instruction_word::fog_control::no_fog
| tsp_instruction_word::src_alpha_instr::one
| tsp_instruction_word::dst_alpha_instr::zero
| tsp_instruction_word::texture_shading_instruction::modulate
| tsp_instruction_word::texture_u_size::from_int(512)
| tsp_instruction_word::texture_v_size::from_int(512)
;
const uint32_t texture_control_word = texture_control_word::pixel_format::_565
| texture_control_word::scan_order::twiddled
| texture_control_word::texture_address(texture_address / 8);
const float alpha = 1.0f;
writer.append<ta_global_parameter::polygon_type_1>() =
ta_global_parameter::polygon_type_1(parameter_control_word,
isp_tsp_instruction_word,
tsp_instruction_word,
texture_control_word,
alpha,
color.x,
color.y,
color.z
);
}
static inline vec3 screen_transform(vec3 v)
{
float dim = 480 / 2.0;
return {
v.x / v.z * dim + 640 / 2.0f,
v.y / v.z * dim + 480 / 2.0f,
1 / v.z,
};
}
static inline void render_quad_type_0(ta_parameter_writer& writer,
vec3 ap,
vec3 bp,
vec3 cp,
vec3 dp,
uint32_t base_color)
{
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
ap.x, ap.y, ap.z,
base_color);
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
bp.x, bp.y, bp.z,
base_color);
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(false),
dp.x, dp.y, dp.z,
base_color);
writer.append<ta_vertex_parameter::polygon_type_0>() =
ta_vertex_parameter::polygon_type_0(polygon_vertex_parameter_control_word(true),
cp.x, cp.y, cp.z,
base_color);
}
static inline void render_quad_type_7(ta_parameter_writer& writer,
vec3 ap,
vec3 bp,
vec3 cp,
vec3 dp,
vec2 at,
vec2 bt,
vec2 ct,
vec2 dt,
float ai,
float bi,
float ci,
float di)
{
writer.append<ta_vertex_parameter::polygon_type_7>() =
ta_vertex_parameter::polygon_type_7(polygon_vertex_parameter_control_word(false),
ap.x, ap.y, ap.z,
at.x, at.y,
ai,
0);
writer.append<ta_vertex_parameter::polygon_type_7>() =
ta_vertex_parameter::polygon_type_7(polygon_vertex_parameter_control_word(false),
bp.x, bp.y, bp.z,
bt.x, bt.y,
bi,
0);
writer.append<ta_vertex_parameter::polygon_type_7>() =
ta_vertex_parameter::polygon_type_7(polygon_vertex_parameter_control_word(false),
dp.x, dp.y, dp.z,
dt.x, dt.y,
di,
0);
writer.append<ta_vertex_parameter::polygon_type_7>() =
ta_vertex_parameter::polygon_type_7(polygon_vertex_parameter_control_word(true),
cp.x, cp.y, cp.z,
ct.x, ct.y,
ci,
0);
}
constexpr inline mat4x4 screen_rotation(float theta)
{
//float zt = -0.7853981633974483 + (0.2);
float zt = -0.7853981633974483 * 0;
float yt = -0.7853981633974483 * theta;
float xt = 0.7853981633974483 * 4;
//float xt = 0.7853981633974483 * 3.7;
mat4x4 rx = {
1, 0, 0, 0,
0, cos(xt), -sin(xt), 0,
0, sin(xt), cos(xt), 0,
0, 0, 0, 1,
};
mat4x4 ry = {
cos(yt), 0, sin(yt), 0,
0, 1, 0, 0,
-sin(yt), 0, cos(yt), 0,
0, 0, 0, 1,
};
mat4x4 rz = {
cos(zt), -sin(zt), 0, 0,
sin(zt), cos(zt), 0, 0,
0, 0, 1, 0,
0, 0, 0, 1,
};
mat4x4 t = {
1, 0, 0, 0,
0, 1, 0, 6.5,
0, 0, 1, 8.5,
0, 0, 0, 1,
};
return t * ry * rx * rz;
}
#define _fsrra(n) (1.0f / (__builtin_sqrtf(n)))
static inline float inverse_length(vec3 v)
{
float f = dot(v, v);
return _fsrra(f);
}
float light_intensity(vec3 light_vec, mat4x4& trans, vec3 n0)
{
vec4 n1 = trans * (vec4){n0.x, n0.y, n0.z, 0.f}; // no translation component
vec3 n = {n1.x, n1.y, n1.z};
float n_dot_l = dot(n, light_vec);
float intensity = 0.5f;
if (n_dot_l > 0) {
intensity += 0.5f * n_dot_l * (inverse_length(n) * inverse_length(light_vec));
if (intensity > 1.0f)
intensity = 1.0f;
}
return intensity;
}
static int animation_tick = 0;
constexpr int animation_frames = 4;
constexpr int ticks_per_animation_frame = 16;
constexpr float tick_div = 1.0f / (float)ticks_per_animation_frame;
void render_object_intensity(ta_parameter_writer& writer, const mat4x4& model_trans, const mat4x4& screen,
const struct model * model,
const struct object * object0,
const struct object * object1)
{
int frame_ix0 = animation_tick / ticks_per_animation_frame;
float lerp = (float)(animation_tick - (frame_ix0 * ticks_per_animation_frame)) * tick_div;
vec3 light_vec = {20, 1, -20};
mat4x4 trans = screen * model_trans;
for (int i = 0; i < object0->quadrilateral_count; i++) {
const union quadrilateral * quad0 = &object0->quadrilateral[i];
const union quadrilateral * quad1 = &object1->quadrilateral[i];
vec3 a0 = model->position[quad0->v[0].position];
vec3 b0 = model->position[quad0->v[1].position];
vec3 c0 = model->position[quad0->v[2].position];
vec3 d0 = model->position[quad0->v[3].position];
vec3 a1 = model->position[quad1->v[0].position];
vec3 b1 = model->position[quad1->v[1].position];
vec3 c1 = model->position[quad1->v[2].position];
vec3 d1 = model->position[quad1->v[3].position];
vec3 a = trans * (a0 + ((a1 - a0) * lerp));
vec3 b = trans * (b0 + ((b1 - b0) * lerp));
vec3 c = trans * (c0 + ((c1 - c0) * lerp));
vec3 d = trans * (d0 + ((d1 - d0) * lerp));
vec2 at = model->texture[quad0->v[0].texture] * (vec2){1, -1};
vec2 bt = model->texture[quad0->v[1].texture] * (vec2){1, -1};
vec2 ct = model->texture[quad0->v[2].texture] * (vec2){1, -1};
vec2 dt = model->texture[quad0->v[3].texture] * (vec2){1, -1};
vec3 an0 = model->normal[quad0->v[0].normal];
vec3 bn0 = model->normal[quad0->v[1].normal];
vec3 cn0 = model->normal[quad0->v[2].normal];
vec3 dn0 = model->normal[quad0->v[3].normal];
vec3 an1 = model->normal[quad1->v[0].normal];
vec3 bn1 = model->normal[quad1->v[1].normal];
vec3 cn1 = model->normal[quad1->v[2].normal];
vec3 dn1 = model->normal[quad1->v[3].normal];
vec3 an = (an0 + ((an1 - an0) * lerp));
vec3 bn = (bn0 + ((bn1 - bn0) * lerp));
vec3 cn = (cn0 + ((cn1 - cn0) * lerp));
vec3 dn = (dn0 + ((dn1 - dn0) * lerp));
float ai = light_intensity(light_vec, trans, an);
float bi = light_intensity(light_vec, trans, bn);
float ci = light_intensity(light_vec, trans, cn);
float di = light_intensity(light_vec, trans, dn);
render_quad_type_7(writer,
screen_transform(a),
screen_transform(b),
screen_transform(c),
screen_transform(d),
at,
bt,
ct,
dt,
ai,
bi,
ci,
di);
}
}
void render_object_packed(ta_parameter_writer& writer, const mat4x4& model_trans, const mat4x4& screen,
const struct model * model, const struct object * object)
{
mat4x4 trans = screen * model_trans;
uint32_t base_color = 0xffff0000;
for (int i = 0; i < object->quadrilateral_count; i++) {
const union quadrilateral * quad = &object->quadrilateral[i];
vec3 a = trans * model->position[quad->v[0].position];
vec3 b = trans * model->position[quad->v[1].position];
vec3 c = trans * model->position[quad->v[2].position];
vec3 d = trans * model->position[quad->v[3].position];
render_quad_type_0(writer,
screen_transform(a),
screen_transform(b),
screen_transform(c),
screen_transform(d),
base_color);
}
}
void transfer_scene(ta_parameter_writer& writer)
{
const float deg = 0.017453292519943295 / 4;
static float theta = deg;
const mat4x4 screen = screen_rotation(theta);
theta += deg;
int frame_ix0 = animation_tick / ticks_per_animation_frame;
int frame_ix1 = frame_ix0 + 1;
if (frame_ix1 >= animation_frames)
frame_ix1 = 0;
float scale = 2.0f;
float translate = 0.f;
const mat4x4 model_trans = {
scale, 0, 0, 0,
0, scale, 0, 0,
0, 0, -scale, translate,
0, 0, 0, 1,
};
// opaque
{
global_polygon_type_1(writer, texture_memory_alloc.texture.start,
para_control::list_type::opaque,
isp_tsp_instruction_word::culling_mode::cull_if_negative,
{1, 1, 1});
const struct model * model = &bear_model;
const struct object * object0 = bear_object[frame_ix0 * 2];
const struct object * object1 = bear_object[frame_ix1 * 2];
render_object_intensity(writer, model_trans, screen, model, object0, object1);
}
{
global_polygon_type_1(writer, texture_memory_alloc.texture.start,
para_control::list_type::opaque,
isp_tsp_instruction_word::culling_mode::cull_if_negative,
{0, 0, 0});
const struct model * model = &bear_model;
const struct object * object0 = bear_object[(frame_ix0 * 2) + 1];
const struct object * object1 = bear_object[(frame_ix1 * 2) + 1];
render_object_intensity(writer, model_trans, screen, model, object0, object1);
}
// end of opaque list
writer.append<ta_global_parameter::end_of_list>() =
ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
// increment tick
animation_tick += 1;
if (animation_tick >= animation_frames * ticks_per_animation_frame)
animation_tick = 0;
}
void transfer_ta_fifo_texture_memory_32byte(void * dst, void * src, int length)
{
uint32_t out_addr = (uint32_t)dst;
sh7091.CCN.QACR0 = ((reinterpret_cast<uint32_t>(out_addr) >> 24) & 0b11100);
sh7091.CCN.QACR1 = ((reinterpret_cast<uint32_t>(out_addr) >> 24) & 0b11100);
volatile uint32_t * base = &store_queue[(out_addr & 0x03ffffc0) / 4];
uint32_t * src32 = reinterpret_cast<uint32_t *>(src);
length = (length + 31) & ~31; // round up to nearest multiple of 32
while (length > 0) {
base[0] = src32[0];
base[1] = src32[1];
base[2] = src32[2];
base[3] = src32[3];
base[4] = src32[4];
base[5] = src32[5];
base[6] = src32[6];
base[7] = src32[7];
asm volatile ("pref @%0"
: // output
: "r" (&base[0]) // input
: "memory");
length -= 32;
base += 8;
src32 += 8;
}
}
void transfer_textures()
{
system.LMMODE0 = 0; // 64-bit address space
system.LMMODE1 = 0; // 64-bit address space
{
uint32_t offset = texture_memory_alloc.texture.start;
void * dst = reinterpret_cast<void *>(&ta_fifo_texture_memory[offset / 4]);
void * src = reinterpret_cast<void *>(&_binary_model_bear_bear_data_start);
uint32_t size = reinterpret_cast<uint32_t>(&_binary_model_bear_bear_data_size);
transfer_ta_fifo_texture_memory_32byte(dst, src, size);
}
}
uint8_t __attribute__((aligned(32))) ta_parameter_buf[1024 * 1024];
void main()
{
serial::init(0);
serial::integer<uint32_t>((sizeof (bear_position)) / (sizeof (bear_position[0])));
interrupt_init();
constexpr uint32_t ta_alloc = 0
| ta_alloc_ctrl::pt_opb::no_list
| ta_alloc_ctrl::tm_opb::no_list
| ta_alloc_ctrl::t_opb::no_list
| ta_alloc_ctrl::om_opb::no_list
| ta_alloc_ctrl::o_opb::_16x4byte;
constexpr int render_passes = 1;
constexpr struct opb_size opb_size[render_passes] = {
{
.opaque = 16 * 4,
.opaque_modifier = 0,
.translucent = 0,
.translucent_modifier = 0,
.punch_through = 0
}
};
holly.SOFTRESET = softreset::pipeline_soft_reset
| softreset::ta_soft_reset;
holly.SOFTRESET = 0;
core_init();
system.IML6NRM = istnrm::end_of_render_tsp;
const int framebuffer_width = 640;
const int framebuffer_height = 480;
const int tile_width = framebuffer_width / 32;
const int tile_height = framebuffer_height / 32;
for (int i = 0; i < 2; i++) {
region_array_multipass(tile_width,
tile_height,
opb_size,
render_passes,
texture_memory_alloc.region_array[i].start,
texture_memory_alloc.object_list[i].start);
background_parameter2(texture_memory_alloc.background[i].start,
0xff202040);
}
int ta = 0;
int core = 0;
ta_parameter_writer writer = ta_parameter_writer(ta_parameter_buf);
transfer_textures();
video_output::set_mode_vga();
while (1) {
ta_polygon_converter_init2(texture_memory_alloc.isp_tsp_parameters[ta].start,
texture_memory_alloc.isp_tsp_parameters[ta].end,
texture_memory_alloc.object_list[ta].start,
texture_memory_alloc.object_list[ta].end,
opb_size[0].total(),
ta_alloc,
tile_width,
tile_height);
writer.offset = 0;
transfer_scene(writer);
ta_polygon_converter_writeback(writer.buf, writer.offset);
ta_polygon_converter_transfer(writer.buf, writer.offset);
ta_wait_opaque_list();
render_done = 0;
core_start_render2(texture_memory_alloc.region_array[core].start,
texture_memory_alloc.isp_tsp_parameters[core].start,
texture_memory_alloc.background[core].start,
texture_memory_alloc.framebuffer[core].start,
framebuffer_width);
while (render_done == 0) {
asm volatile ("nop");
};
while (!spg_status::vsync(holly.SPG_STATUS));
holly.FB_R_SOF1 = texture_memory_alloc.framebuffer[ta].start;
while (spg_status::vsync(holly.SPG_STATUS));
}
}

14
example/example.mk
View File

@ -949,3 +949,17 @@ FEMALE_OBJ = \
example/female.elf: LDSCRIPT = $(LIB)/main.lds
example/female.elf: $(START_OBJ) $(FEMALE_OBJ)
BEAR_OBJ = \
example/bear.o \
holly/core.o \
holly/region_array.o \
holly/background.o \
holly/ta_fifo_polygon_converter.o \
holly/video_output.o \
sh7091/serial.o \
model/bear/bear.data.o \
$(LIBGCC)
example/bear.elf: LDSCRIPT = $(LIB)/main.lds
example/bear.elf: $(START_OBJ) $(BEAR_OBJ)

BIN
model/bear/Bear.png Normal file
View File

Binary file not shown.
Side by Side

After

Width:  |  Height:  |  Size: 99 KiB

BIN
model/bear/bear.data Normal file
View File

Binary file not shown.

15
model/bear/bear.data.h Normal file
View File

@ -0,0 +1,15 @@
#pragma once
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
extern uint32_t _binary_model_bear_bear_data_start __asm("_binary_model_bear_bear_data_start");
extern uint32_t _binary_model_bear_bear_data_end __asm("_binary_model_bear_bear_data_end");
extern uint32_t _binary_model_bear_bear_data_size __asm("_binary_model_bear_bear_data_size");
#ifdef __cplusplus
}
#endif

22
model/bear/bear.mtl Normal file
View File

@ -0,0 +1,22 @@
# Blender 4.3.2 MTL File: 'bear.blend'
# www.blender.org
newmtl matBear
Ns 250.000000
Ka 1.000000 1.000000 1.000000
Kd 0.800000 0.800000 0.800000
Ks 0.000000 0.000000 0.000000
Ke 0.000000 0.000000 0.000000
Ni 1.000000
d 1.000000
illum 1
newmtl matOutline
Ns 250.000000
Ka 1.000000 1.000000 1.000000
Kd 0.000000 0.000000 0.000000
Ks 0.000000 0.000000 0.000000
Ke 0.000000 0.000000 0.000000
Ni 1.000000
d 1.000000
illum 1

3407
model/bear/bear0000.obj Normal file
View File

File diff suppressed because it is too large Load Diff

3407
model/bear/bear0005.obj Normal file
View File

File diff suppressed because it is too large Load Diff

3407
model/bear/bear0010.obj Normal file
View File

File diff suppressed because it is too large Load Diff

3407
model/bear/bear0015.obj Normal file
View File

File diff suppressed because it is too large Load Diff

3407
model/bear/bear0020.obj Normal file
View File

File diff suppressed because it is too large Load Diff

13
model/bear/material.h Normal file
View File

@ -0,0 +1,13 @@
#pragma once
#include <stdint.h>
#include "model/material.h"
enum material {
bear_matBear,
bear_matOutline,
};
const struct material_descriptor bear_material[] = {
};

33616
model/bear/model.h Normal file
View File

File diff suppressed because it is too large Load Diff