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LEFTONE/core/loshader/character.c

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#include "./character.h"
#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <GL/glew.h>
#include "util/gleasy/buffer.h"
#include "util/gleasy/program.h"
#include "util/math/vector.h"
#include "./instanced.h"
#include "./uniblock.h"
/* resources */
#include "core/loshader/anysrc/header.shader.h"
#include "core/loshader/anysrc/character.vshader.h"
#include "core/loshader/anysrc/character.fshader.h"
#define VSHADER_IN_CHARACTER_ID_ 0
#define VSHADER_IN_FROM_MOTION_ID_ 1
#define VSHADER_IN_TO_MOTION_ID_ 2
#define VSHADER_IN_MOTION_TIME_ 3
#define VSHADER_IN_MARKER_ 4
#define VSHADER_IN_MARKER_OFFSET_ 5
#define VSHADER_IN_POS_ 6
#define VSHADER_IN_SIZE_ 7
#define VSHADER_IN_COLOR_ 8
#define PRIMITIVE_COUNT_ 54
#pragma pack(push, 1)
typedef struct {
uint16_t character_id;
uint16_t from_motion_id;
uint16_t to_motion_id;
float motion_time;
float marker;
vec2_t marker_offset;
vec2_t pos;
vec2_t size;
vec4_t color;
} loshader_character_drawer_internal_instance_t;
#pragma pack(pop)
void loshader_character_drawer_initialize(
loshader_character_drawer_t* drawer, const loshader_uniblock_t* uniblock) {
assert(drawer != NULL);
assert(uniblock != NULL);
gleasy_program_t prog = gleasy_program_new(
loshader_header_shader_, sizeof(loshader_header_shader_),
loshader_character_vshader_, sizeof(loshader_character_vshader_),
loshader_character_fshader_, sizeof(loshader_character_fshader_));
loshader_instanced_drawer_initialize(
&drawer->super,
prog,
uniblock,
sizeof(loshader_character_drawer_internal_instance_t));
glBindVertexArray(drawer->super.vao);
glBindBuffer(GL_ARRAY_BUFFER, drawer->super.instances);
# define enable_(index, var, dim, type) do { \
glEnableVertexAttribArray(index); \
glVertexAttribPointer( \
index, dim, type, GL_FALSE, \
sizeof(loshader_character_drawer_internal_instance_t), \
NULL + offsetof(loshader_character_drawer_internal_instance_t, var)); \
glVertexAttribDivisor(index, 1); \
} while (0)
enable_(VSHADER_IN_CHARACTER_ID_, character_id, 1, GL_UNSIGNED_SHORT);
enable_(VSHADER_IN_FROM_MOTION_ID_, from_motion_id, 1, GL_UNSIGNED_SHORT);
enable_(VSHADER_IN_TO_MOTION_ID_, to_motion_id, 1, GL_UNSIGNED_SHORT);
enable_(VSHADER_IN_MOTION_TIME_, motion_time, 1, GL_FLOAT);
enable_(VSHADER_IN_MARKER_, marker, 1, GL_FLOAT);
enable_(VSHADER_IN_MARKER_OFFSET_, marker_offset, 2, GL_FLOAT);
enable_(VSHADER_IN_POS_, pos, 2, GL_FLOAT);
enable_(VSHADER_IN_SIZE_, size, 2, GL_FLOAT);
enable_(VSHADER_IN_COLOR_, color, 4, GL_FLOAT);
# undef enable_
}
void loshader_character_drawer_add_instance(
loshader_character_drawer_t* drawer,
const loshader_character_drawer_instance_t* instance) {
assert(drawer != NULL);
assert(instance != NULL);
const loshader_character_drawer_internal_instance_t insta = {
.character_id = instance->character_id,
.from_motion_id = instance->motion.from,
.to_motion_id = instance->motion.to,
.motion_time = instance->motion.time,
.marker = instance->marker,
.marker_offset = instance->marker_offset,
.pos = instance->pos,
.size = instance->size,
.color = instance->color,
};
if (!loshader_instanced_drawer_add_instance(&drawer->super, &insta)) {
fprintf(stderr, "character drawer overflow\n");
abort();
}
}
void loshader_character_drawer_draw(const loshader_character_drawer_t* drawer) {
assert(drawer != NULL);
loshader_instanced_drawer_draw(&drawer->super, PRIMITIVE_COUNT_);
}