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example/md5: color joints

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This commit is contained in:
Zack Buhman 2025-05-12 21:03:49 -05:00
parent f14e958ec2
commit efe6470afe
1 changed files with 73 additions and 24 deletions
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97
example/md5.cpp
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@ -50,6 +50,7 @@ using mat4x4 = mat<4, 4, float>;
#include "md5/md5.h" #include "md5/md5.h"
#include "model/boblamp/boblamp.h" #include "model/boblamp/boblamp.h"
static int joint_ix_sel = 0;
static ft0::data_transfer::data_format data[4]; static ft0::data_transfer::data_format data[4];
@ -199,7 +200,7 @@ void vbr600()
interrupt_exception(); interrupt_exception();
} }
void global_polygon_type_1(ta_parameter_writer& writer, void global_polygon_type_0(ta_parameter_writer& writer,
uint32_t para_control_obj_control, uint32_t para_control_obj_control,
uint32_t tsp_instruction_word, uint32_t tsp_instruction_word,
uint32_t texture_control_word, uint32_t texture_control_word,
@ -210,7 +211,7 @@ void global_polygon_type_1(ta_parameter_writer& writer,
) )
{ {
const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume const uint32_t parameter_control_word = para_control::para_type::polygon_or_modifier_volume
| obj_control::col_type::intensity_mode_1 | obj_control::col_type::floating_color
| obj_control::gouraud | obj_control::gouraud
| para_control_obj_control | para_control_obj_control
; ;
@ -219,15 +220,13 @@ void global_polygon_type_1(ta_parameter_writer& writer,
| isp_tsp_instruction_word::culling_mode::no_culling | isp_tsp_instruction_word::culling_mode::no_culling
; ;
writer.append<ta_global_parameter::polygon_type_1>() = writer.append<ta_global_parameter::polygon_type_0>() =
ta_global_parameter::polygon_type_1(parameter_control_word, ta_global_parameter::polygon_type_0(parameter_control_word,
isp_tsp_instruction_word, isp_tsp_instruction_word,
tsp_instruction_word, tsp_instruction_word,
texture_control_word, texture_control_word,
a, 0,
r, 0
g,
b
); );
} }
@ -235,28 +234,31 @@ void transfer_triangle(ta_parameter_writer& writer,
vec3 ap, vec3 ap,
vec3 bp, vec3 bp,
vec3 cp, vec3 cp,
float ai, vec3 ac,
float bi, vec3 bc,
float ci vec3 cc
) )
{ {
if (ap.z < 0 || bp.z < 0 || cp.z < 0) if (ap.z < 0 || bp.z < 0 || cp.z < 0)
return; return;
writer.append<ta_vertex_parameter::polygon_type_2>() = writer.append<ta_vertex_parameter::polygon_type_1>() =
ta_vertex_parameter::polygon_type_2(polygon_vertex_parameter_control_word(false), ta_vertex_parameter::polygon_type_1(polygon_vertex_parameter_control_word(false),
ap.x, ap.y, ap.z, ap.x, ap.y, ap.z,
ai); 1.0,
ac.x, ac.y, ac.z);
writer.append<ta_vertex_parameter::polygon_type_2>() = writer.append<ta_vertex_parameter::polygon_type_1>() =
ta_vertex_parameter::polygon_type_2(polygon_vertex_parameter_control_word(false), ta_vertex_parameter::polygon_type_1(polygon_vertex_parameter_control_word(false),
bp.x, bp.y, bp.z, bp.x, bp.y, bp.z,
bi); 1.0,
bc.x, bc.y, bc.z);
writer.append<ta_vertex_parameter::polygon_type_2>() = writer.append<ta_vertex_parameter::polygon_type_1>() =
ta_vertex_parameter::polygon_type_2(polygon_vertex_parameter_control_word(true), ta_vertex_parameter::polygon_type_1(polygon_vertex_parameter_control_word(true),
cp.x, cp.y, cp.z, cp.x, cp.y, cp.z,
ci); 1.0,
cc.x, cc.y, cc.z);
} }
vec4 quaternion_normalize(vec4 q) vec4 quaternion_normalize(vec4 q)
@ -321,6 +323,22 @@ vec3 vertex_weights(const md5_mesh_joint * joints,
return sum; return sum;
} }
vec3 vertex_weight_color(const md5_mesh_joint * joints,
const md5_mesh_mesh * mesh,
const md5_mesh_vert * v)
{
const md5_mesh_weight * weights = &mesh->weights[v->weight_index];
for (int i = 0; i < v->weight_elem; i++) {
const md5_mesh_weight * weight = &weights[i];
if (weight->joint_index == joint_ix_sel) {
return {weight->weight_value, 1.0f - weight->weight_value, 0.0};
}
}
return {0.0, 0.0, 1.0};
}
static inline vec3 screen_transform(vec3 v) static inline vec3 screen_transform(vec3 v)
{ {
float x2 = 640 / 2.0; float x2 = 640 / 2.0;
@ -376,13 +394,18 @@ void transfer_mesh(ta_parameter_writer& writer,
float b_diffuse = max(dot(n, b_light_dir), 0.0f); float b_diffuse = max(dot(n, b_light_dir), 0.0f);
float c_diffuse = max(dot(n, c_light_dir), 0.0f); float c_diffuse = max(dot(n, c_light_dir), 0.0f);
vec3 ac = vertex_weight_color(joints, mesh, av);
vec3 bc = vertex_weight_color(joints, mesh, bv);
vec3 cc = vertex_weight_color(joints, mesh, cv);
transfer_triangle(writer, transfer_triangle(writer,
screen_transform(ap), screen_transform(ap),
screen_transform(bp), screen_transform(bp),
screen_transform(cp), screen_transform(cp),
a_diffuse, ac * a_diffuse,
b_diffuse, bc * b_diffuse,
c_diffuse); cc * c_diffuse
);
} }
} }
@ -395,7 +418,7 @@ void transfer_scene(ta_parameter_writer& writer,
| tsp_instruction_word::fog_control::no_fog | tsp_instruction_word::fog_control::no_fog
| tsp_instruction_word::texture_shading_instruction::decal; | tsp_instruction_word::texture_shading_instruction::decal;
uint32_t texture_control_word = 0; uint32_t texture_control_word = 0;
global_polygon_type_1(writer, global_polygon_type_0(writer,
control, control,
tsp_instruction_word, tsp_instruction_word,
texture_control_word); texture_control_word);
@ -408,6 +431,31 @@ void transfer_scene(ta_parameter_writer& writer,
ta_global_parameter::end_of_list(para_control::para_type::end_of_list); ta_global_parameter::end_of_list(para_control::para_type::end_of_list);
} }
void update_maple(struct md5_mesh * m)
{
int ra = ft0::data_transfer::digital_button::ra(data[0].digital_button) == 0;
int la = ft0::data_transfer::digital_button::la(data[0].digital_button) == 0;
static int last_ra = 0;
static int last_la = 0;
if (ra && last_ra == 0) {
joint_ix_sel += 1;
printf("joint_ix_sel: %d\n", joint_ix_sel);
if (joint_ix_sel >= m->num_joints)
joint_ix_sel = 0;
}
if (la && last_la == 0) {
joint_ix_sel -= 1;
printf("joint_ix_sel: %d\n", joint_ix_sel);
if (joint_ix_sel < 0)
joint_ix_sel = m->num_joints - 1;
}
last_ra = ra;
last_la = la;
}
uint8_t __attribute__((aligned(32))) ta_parameter_buf[1024 * 1024]; uint8_t __attribute__((aligned(32))) ta_parameter_buf[1024 * 1024];
int main() int main()
@ -462,6 +510,7 @@ int main()
while (1) { while (1) {
maple::dma_wait_complete(); maple::dma_wait_complete();
do_get_condition(); do_get_condition();
update_maple(&boblamp_mesh);
screen_trans = screen_trans * rotate_z(0.01f); screen_trans = screen_trans * rotate_z(0.01f);