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korenkonder_ReDIVA/src/CRE/post_process/aa.cpp
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/*
by korenkonder
GitHub/GitLab: korenkonder
*/
#include "aa.hpp"
#include "../fbo.hpp"
#include "../gl_state.hpp"
#include "../post_process.hpp"
#include "../shader_ft.hpp"
static void post_process_aa_calculate_area_texture_data(uint8_t* a1, int32_t a2, int32_t a3);
static void post_process_aa_calculate_area_texture_data_sub(float_t* a1,
float_t* a2, int32_t a3, int32_t a4, int32_t a5, int32_t a6);
static float_t post_process_aa_calculate_area_texture_data_sub_sub(int32_t a1, int32_t a2);
post_process_aa::post_process_aa() : width(), height(), mlaa_area_texture() {
uint8_t pixels[35 * 35 * 2];
for (int32_t i = 0; i < 5; i++)
for (int32_t j = 0; j < 5; j++)
post_process_aa_calculate_area_texture_data(pixels, j, i);
glGenTextures(1, &mlaa_area_texture);
gl_state_bind_texture_2d(mlaa_area_texture);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RG8, 35, 35, 0, GL_RG, GL_UNSIGNED_BYTE, pixels);
gl_state_bind_texture_2d(0);
}
post_process_aa::~post_process_aa() {
if (!this)
return;
glDeleteTextures(1, &mlaa_area_texture);
}
void post_process_aa::apply_mlaa(render_texture* rt,
render_texture* buf_rt, GLuint* samplers, int32_t ss_alpha_mask) {
mlaa_buffer->bind();
gl_state_active_bind_texture_2d(0, rt->color_texture->tex);
gl_state_bind_sampler(0, samplers[1]);
//uniform_value[U_MLAA] = 0;
//shaders_ft.set(SHADER_FT_MLAA);
uniform_value[U_ALPHA_MASK] = 0;
shaders_ft.set(SHADER_FT_MLAA_EDGE);
render_texture::draw_params(&shaders_ft, width, height);
mlaa_buffer[1].bind();
gl_state_active_bind_texture_2d(0, mlaa_buffer[0].color_texture->tex);
gl_state_active_bind_texture_2d(1, mlaa_area_texture);
gl_state_bind_sampler(0, samplers[0]);
gl_state_bind_sampler(1, samplers[1]);
//uniform_value[U_MLAA_SEARCH] = 2;
//uniform_value[U_MLAA] = 1;
//shaders_ft.set(SHADER_FT_MLAA);
uniform_value[U_MLAA_SEARCH] = 2;
shaders_ft.set(SHADER_FT_MLAA_AREA);
render_texture::draw_params(&shaders_ft, width, height);
buf_rt->bind();
gl_state_active_bind_texture_2d(0, rt->color_texture->tex);
gl_state_active_bind_texture_2d(1, mlaa_buffer[1].color_texture->tex);
gl_state_bind_sampler(0, samplers[1]);
//uniform_value[U_MLAA] = 2;
//uniform_value[U_ALPHA_MASK] = ss_alpha_mask ? 1 : 0;
//shaders_ft.set(SHADER_FT_MLAA);
uniform_value[U_ALPHA_MASK] = ss_alpha_mask ? 1 : 0;
shaders_ft.set(SHADER_FT_MLAA_BLEND);
render_texture::draw_params(&shaders_ft, width, height);
uniform_value[U_ALPHA_MASK] = 0;
gl_state_active_bind_texture_2d(0, 0);
gl_state_active_bind_texture_2d(1, 0);
fbo::blit(buf_rt->fbos[0], rt->fbos[0],
0, 0, buf_rt->color_texture->width, buf_rt->color_texture->height,
0, 0, rt->color_texture->width, rt->color_texture->height, GL_COLOR_BUFFER_BIT, GL_LINEAR);
}
void post_process_aa::init_fbo(int32_t width, int32_t height) {
if (!this || (this->width == width && this->height == height))
return;
this->width = max_def(width, 1);
this->height = max_def(height, 1);
mlaa_buffer[0].init(this->width, this->height, 0, GL_RGBA8, 0);
mlaa_buffer[1].init(this->width, this->height, 0, GL_RGBA8, 0);
}
static void post_process_aa_calculate_area_texture_data(uint8_t* a1, int32_t a2, int32_t a3) {
uint8_t* v7 = &a1[7 * 7 * 10 * a3 + 14 * a2];
for (int32_t i = 0; i < 7; i++) {
for (int32_t j = 0; j < 7; j++) {
float_t v11 = 0.0f;
float_t v12 = 0.0f;
post_process_aa_calculate_area_texture_data_sub(&v11, &v12, a2, a3, j, i);
v7[0] = (uint8_t)(v11 * 255.89999f);
v7[1] = (uint8_t)(v12 * 255.89999f);
v7 += 2;
}
v7 += 28 * 2;
}
}
static void post_process_aa_calculate_area_texture_data_sub(float_t* a2,
float_t* a3, int32_t a4, int32_t a5, int32_t a6, int32_t a7) {
float_t v8 = 0.0f;
float_t v10 = 0.0f;
int32_t v11 = a6 + a7 + 1;
v11 = min_def(v11, 7);
int32_t v12;
if (((a6 + a7 + 1) & 1) != 0)
v12 = (a6 + a7) / 2 + 1;
else
v12 = (a6 + a7 + 1) / 2;
float_t v14;
int32_t v15;
switch (a5) {
case 0:
if (a4 == 1)
v10 = post_process_aa_calculate_area_texture_data_sub_sub(a6, v11);
else if (a4 == 3)
v8 = post_process_aa_calculate_area_texture_data_sub_sub(a6, v11);
break;
case 1:
if (a4 == 0)
v10 = post_process_aa_calculate_area_texture_data_sub_sub(a7, v11);
else if (a4 == 1) {
if (((a6 + a7 + 1) & 1) == 0) {
v14 = -0.5f / (float_t)v12;
if (a6 >= v12)
v10 = ((float_t)(a7 * 2 + 1) * v14 + 1.0f) * 0.5f;
else
v10 = ((float_t)(a6 * 2 + 1) * v14 + 1.0f) * 0.5f;
}
else {
v15 = v12 - 1;
if (a6 < v15)
v10 = post_process_aa_calculate_area_texture_data_sub_sub(a6, v12);
else if (a7 < v15)
v10 = post_process_aa_calculate_area_texture_data_sub_sub(a7, v12);
else
v10 = post_process_aa_calculate_area_texture_data_sub_sub(v15, v12) * 2.0f;
}
}
else if (a4 == 3 || a4 == 4) {
if (((a6 + a7 + 1) & 1) == 0) {
v14 = -0.5f / (float_t)v12;
if (a6 < v12)
v8 = ((float_t)(a6 * 2 + 1) * v14 + 1.0f) * 0.5f;
else
v10 = ((float_t)(a7 * 2 + 1) * v14 + 1.0f) * 0.5f;
}
else {
v15 = v12 - 1;
if (a6 < v15)
v8 = post_process_aa_calculate_area_texture_data_sub_sub(a6, v12);
else if (a7 < v15)
v10 = post_process_aa_calculate_area_texture_data_sub_sub(a7, v12);
else
v8 = v10 = post_process_aa_calculate_area_texture_data_sub_sub(v15, v12);
}
}
break;
case 3:
if (a4 == 0)
v8 = post_process_aa_calculate_area_texture_data_sub_sub(a7, v11);
else if (a4 == 1 || a4 == 4) {
if (((a6 + a7 + 1) & 1) == 0) {
v14 = -0.5f / (float_t)v12;
if (a6 < v12)
v10 = ((float_t)(a6 * 2 + 1) * v14 + 1.0f) * 0.5f;
else
v8 = ((float_t)(a7 * 2 + 1) * v14 + 1.0f) * 0.5f;
}
else {
v15 = v12 - 1;
if (a6 < v15)
v10 = post_process_aa_calculate_area_texture_data_sub_sub(a6, v12);
else if (a7 < v15)
v8 = post_process_aa_calculate_area_texture_data_sub_sub(a7, v12);
else
v8 = v10 = post_process_aa_calculate_area_texture_data_sub_sub(v15, v12);
}
}
else if (a4 == 3) {
if (((a6 + a7 + 1) & 1) == 0) {
v14 = -0.5f / (float_t)v12;
if (a6 < v12)
v8 = ((float_t)(a6 * 2 + 1) * v14 + 1.0f) * 0.5f;
else
v8 = ((float_t)(a7 * 2 + 1) * v14 + 1.0f) * 0.5f;
}
else {
v15 = v12 - 1;
if (a6 < v15)
v8 = post_process_aa_calculate_area_texture_data_sub_sub(a6, v12);
else if (a7 < v15)
v8 = post_process_aa_calculate_area_texture_data_sub_sub(a7, v12);
else
v8 = post_process_aa_calculate_area_texture_data_sub_sub(v15, v12) * 2.0f;
}
}
break;
case 4:
if (a4 == 1) {
if (((a6 + a7 + 1) & 1) == 0) {
v14 = -0.5f / (float_t)v12;
if (a6 < v12)
v10 = ((float_t)(a6 * 2 + 1) * v14 + 1.0f) * 0.5f;
else
v8 = ((float_t)(a7 * 2 + 1) * v14 + 1.0f) * 0.5f;
}
else {
v15 = v12 - 1;
if (a6 < v15)
v10 = post_process_aa_calculate_area_texture_data_sub_sub(a6, v12);
else if (a7 < v15)
v8 = post_process_aa_calculate_area_texture_data_sub_sub(a7, v12);
else
v8 = v10 = post_process_aa_calculate_area_texture_data_sub_sub(v15, v12);
}
}
else if (a4 == 3) {
if (((a6 + a7 + 1) & 1) == 0) {
v14 = -0.5f / (float_t)v12;
if (a6 < v12)
v8 = ((float_t)(a6 * 2 + 1) * v14 + 1.0f) * 0.5f;
else
v10 = ((float_t)(a7 * 2 + 1) * v14 + 1.0f) * 0.5f;
}
else {
v15 = v12 - 1;
if (a6 < v15)
v8 = post_process_aa_calculate_area_texture_data_sub_sub(a6, v12);
else if (a7 < v15)
v10 = post_process_aa_calculate_area_texture_data_sub_sub(a7, v12);
else
v8 = v10 = post_process_aa_calculate_area_texture_data_sub_sub(v15, v12);
}
}
break;
}
*a2 = v8;
*a3 = v10;
return;
}
static float_t post_process_aa_calculate_area_texture_data_sub_sub(int32_t a1, int32_t a2) {
float_t v2 = -0.5f / ((float_t)a2 - 0.5f);
float_t v3 = (float_t)a1 * v2 + 0.5f;
if (a1 >= a2 - 1)
return (v3 * 0.5f) * 0.5f;
else
return ((float_t)(a1 + 1) * v2 + v3 + 0.5f) * 0.5f;
}
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