kirsle
/
sm64pc
1
0
Fork 0
Code Releases Wiki Activity
sm64pc/src/pc/gfx/gfx_pc.c

1548 lines
53 KiB
C
Raw Blame History

#include <math.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <assert.h>
#ifndef _LANGUAGE_C
#define _LANGUAGE_C
#endif
#include <PR/gbi.h>
#include "config.h"
#include "gfx_pc.h"
#include "gfx_cc.h"
#include "gfx_window_manager_api.h"
#include "gfx_rendering_api.h"
#include "gfx_screen_config.h"
#define SUPPORT_CHECK(x) assert(x)
// SCALE_M_N: upscale/downscale M-bit integer to N-bit
#define SCALE_5_8(VAL_) (((VAL_) * 0xFF) / 0x1F)
#define SCALE_8_5(VAL_) ((((VAL_) + 4) * 0x1F) / 0xFF)
#define SCALE_4_8(VAL_) ((VAL_) * 0x11)
#define SCALE_8_4(VAL_) ((VAL_) / 0x11)
#define SCALE_3_8(VAL_) ((VAL_) * 0x24)
#define SCALE_8_3(VAL_) ((VAL_) / 0x24)
#define HALF_SCREEN_WIDTH (SCREEN_WIDTH / 2)
#define HALF_SCREEN_HEIGHT (SCREEN_HEIGHT / 2)
#define RATIO_X (gfx_current_dimensions.width / (2.0f * HALF_SCREEN_WIDTH))
#define RATIO_Y (gfx_current_dimensions.height / (2.0f * HALF_SCREEN_HEIGHT))
#define MAX_BUFFERED 256
#define MAX_LIGHTS 2
#define MAX_VERTICES 64
struct RGBA {
uint8_t r, g, b, a;
};
struct XYWidthHeight {
uint16_t x, y, width, height;
};
struct LoadedVertex {
float x, y, z, w;
float u, v;
struct RGBA color;
uint8_t clip_rej;
};
struct TextureHashmapNode {
struct TextureHashmapNode *next;
const uint8_t *texture_addr;
uint8_t fmt, siz;
uint32_t texture_id;
uint8_t cms, cmt;
bool linear_filter;
};
static struct {
struct TextureHashmapNode *hashmap[1024];
struct TextureHashmapNode pool[512];
uint32_t pool_pos;
} gfx_texture_cache;
struct ColorCombiner {
uint32_t cc_id;
struct ShaderProgram *prg;
uint8_t shader_input_mapping[2][4];
};
static struct ColorCombiner color_combiner_pool[64];
static uint8_t color_combiner_pool_size;
static struct RSP {
float modelview_matrix_stack[11][4][4];
uint8_t modelview_matrix_stack_size;
float MP_matrix[4][4];
float P_matrix[4][4];
Light_t current_lights[MAX_LIGHTS + 1];
float current_lights_coeffs[MAX_LIGHTS][3];
float current_lookat_coeffs[2][3]; // lookat_x, lookat_y
uint8_t current_num_lights; // includes ambient light
bool lights_changed;
uint32_t geometry_mode;
int16_t fog_mul, fog_offset;
struct {
// U0.16
uint16_t s, t;
} texture_scaling_factor;
struct LoadedVertex loaded_vertices[MAX_VERTICES + 4];
} rsp;
static struct RDP {
const uint8_t *palette;
struct {
const uint8_t *addr;
uint8_t siz;
uint8_t tile_number;
} texture_to_load;
struct {
const uint8_t *addr;
uint32_t size_bytes;
} loaded_texture[2];
struct {
uint8_t fmt;
uint8_t siz;
uint8_t cms, cmt;
uint16_t uls, ult, lrs, lrt; // U10.2
uint32_t line_size_bytes;
} texture_tile;
bool textures_changed[2];
uint32_t other_mode_l, other_mode_h;
uint32_t combine_mode;
struct RGBA env_color, prim_color, fog_color, fill_color;
struct XYWidthHeight viewport, scissor;
bool viewport_or_scissor_changed;
void *z_buf_address;
void *color_image_address;
} rdp;
static struct RenderingState {
bool depth_test;
bool depth_mask;
bool decal_mode;
bool alpha_blend;
struct XYWidthHeight viewport, scissor;
struct ShaderProgram *shader_program;
struct TextureHashmapNode *textures[2];
} rendering_state;
struct GfxDimensions gfx_current_dimensions;
static bool dropped_frame;
static float buf_vbo[MAX_BUFFERED * (26 * 3)]; // 3 vertices in a triangle and 26 floats per vtx
static size_t buf_vbo_len;
static size_t buf_vbo_num_tris;
static struct GfxWindowManagerAPI *gfx_wapi;
static struct GfxRenderingAPI *gfx_rapi;
#include <time.h>
static unsigned long get_time(void) {
struct timespec ts;
clock_gettime(CLOCK_MONOTONIC, &ts);
return (unsigned long)ts.tv_sec * 1000000 + ts.tv_nsec / 1000;
}
static void gfx_flush(void) {
if (buf_vbo_len > 0) {
int num = buf_vbo_num_tris;
unsigned long t0 = get_time();
gfx_rapi->draw_triangles(buf_vbo, buf_vbo_len, buf_vbo_num_tris);
buf_vbo_len = 0;
buf_vbo_num_tris = 0;
unsigned long t1 = get_time();
/*if (t1 - t0 > 1000) {
printf("f: %d %d\n", num, (int)(t1 - t0));
}*/
}
}
static struct ShaderProgram *gfx_lookup_or_create_shader_program(uint32_t shader_id) {
struct ShaderProgram *prg = gfx_rapi->lookup_shader(shader_id);
if (prg == NULL) {
gfx_rapi->unload_shader(rendering_state.shader_program);
prg = gfx_rapi->create_and_load_new_shader(shader_id);
rendering_state.shader_program = prg;
}
return prg;
}
static void gfx_generate_cc(struct ColorCombiner *comb, uint32_t cc_id) {
uint8_t c[2][4];
uint32_t shader_id = (cc_id >> 24) << 24;
uint8_t shader_input_mapping[2][4] = {{0}};
for (int i = 0; i < 4; i++) {
c[0][i] = (cc_id >> (i * 3)) & 7;
c[1][i] = (cc_id >> (12 + i * 3)) & 7;
}
for (int i = 0; i < 2; i++) {
if (c[i][0] == c[i][1] || c[i][2] == CC_0) {
c[i][0] = c[i][1] = c[i][2] = 0;
}
uint8_t input_number[8] = {0};
int next_input_number = SHADER_INPUT_1;
for (int j = 0; j < 4; j++) {
int val = 0;
switch (c[i][j]) {
case CC_0:
break;
case CC_TEXEL0:
val = SHADER_TEXEL0;
break;
case CC_TEXEL1:
val = SHADER_TEXEL1;
break;
case CC_TEXEL0A:
val = SHADER_TEXEL0A;
break;
case CC_PRIM:
case CC_SHADE:
case CC_ENV:
case CC_LOD:
if (input_number[c[i][j]] == 0) {
shader_input_mapping[i][next_input_number - 1] = c[i][j];
input_number[c[i][j]] = next_input_number++;
}
val = input_number[c[i][j]];
break;
}
shader_id |= val << (i * 12 + j * 3);
}
}
comb->cc_id = cc_id;
comb->prg = gfx_lookup_or_create_shader_program(shader_id);
memcpy(comb->shader_input_mapping, shader_input_mapping, sizeof(shader_input_mapping));
}
static struct ColorCombiner *gfx_lookup_or_create_color_combiner(uint32_t cc_id) {
static struct ColorCombiner *prev_combiner;
if (prev_combiner != NULL && prev_combiner->cc_id == cc_id) {
return prev_combiner;
}
for (size_t i = 0; i < color_combiner_pool_size; i++) {
if (color_combiner_pool[i].cc_id == cc_id) {
return prev_combiner = &color_combiner_pool[i];
}
}
gfx_flush();
struct ColorCombiner *comb = &color_combiner_pool[color_combiner_pool_size++];
gfx_generate_cc(comb, cc_id);
return prev_combiner = comb;
}
static bool gfx_texture_cache_lookup(int tile, struct TextureHashmapNode **n, const uint8_t *orig_addr, uint32_t fmt, uint32_t siz) {
size_t hash = (uintptr_t)orig_addr;
hash = (hash >> 5) & 0x3ff;
struct TextureHashmapNode **node = &gfx_texture_cache.hashmap[hash];
while (*node != NULL && *node - gfx_texture_cache.pool < gfx_texture_cache.pool_pos) {
if ((*node)->texture_addr == orig_addr && (*node)->fmt == fmt && (*node)->siz == siz) {
gfx_rapi->select_texture(tile, (*node)->texture_id);
*n = *node;
return true;
}
node = &(*node)->next;
}
if (gfx_texture_cache.pool_pos == sizeof(gfx_texture_cache.pool) / sizeof(struct TextureHashmapNode)) {
// Pool is full. We just invalidate everything and start over.
gfx_texture_cache.pool_pos = 0;
node = &gfx_texture_cache.hashmap[hash];
//puts("Clearing texture cache");
}
*node = &gfx_texture_cache.pool[gfx_texture_cache.pool_pos++];
if ((*node)->texture_addr == NULL) {
(*node)->texture_id = gfx_rapi->new_texture();
}
gfx_rapi->select_texture(tile, (*node)->texture_id);
gfx_rapi->set_sampler_parameters(tile, false, 0, 0);
(*node)->cms = 0;
(*node)->cmt = 0;
(*node)->linear_filter = false;
(*node)->next = NULL;
(*node)->texture_addr = orig_addr;
(*node)->fmt = fmt;
(*node)->siz = siz;
*n = *node;
return false;
}
static void import_texture_rgba16(int tile) {
uint8_t rgba32_buf[8192];
for (uint32_t i = 0; i < rdp.loaded_texture[tile].size_bytes / 2; i++) {
uint16_t col16 = (rdp.loaded_texture[tile].addr[2 * i] << 8) | rdp.loaded_texture[tile].addr[2 * i + 1];
uint8_t a = col16 & 1;
uint8_t r = col16 >> 11;
uint8_t g = (col16 >> 6) & 0x1f;
uint8_t b = (col16 >> 1) & 0x1f;
rgba32_buf[4*i + 0] = SCALE_5_8(r);
rgba32_buf[4*i + 1] = SCALE_5_8(g);
rgba32_buf[4*i + 2] = SCALE_5_8(b);
rgba32_buf[4*i + 3] = a ? 255 : 0;
}
uint32_t width = rdp.texture_tile.line_size_bytes / 2;
uint32_t height = rdp.loaded_texture[tile].size_bytes / rdp.texture_tile.line_size_bytes;
gfx_rapi->upload_texture(rgba32_buf, width, height);
}
static void import_texture_ia4(int tile) {
uint8_t rgba32_buf[32768];
for (uint32_t i = 0; i < rdp.loaded_texture[tile].size_bytes * 2; i++) {
uint8_t byte = rdp.loaded_texture[tile].addr[i / 2];
uint8_t part = (byte >> (4 - (i % 2) * 4)) & 0xf;
uint8_t intensity = part >> 1;
uint8_t alpha = part & 1;
uint8_t r = intensity;
uint8_t g = intensity;
uint8_t b = intensity;
rgba32_buf[4*i + 0] = SCALE_3_8(r);
rgba32_buf[4*i + 1] = SCALE_3_8(g);
rgba32_buf[4*i + 2] = SCALE_3_8(b);
rgba32_buf[4*i + 3] = alpha ? 255 : 0;
}
uint32_t width = rdp.texture_tile.line_size_bytes * 2;
uint32_t height = rdp.loaded_texture[tile].size_bytes / rdp.texture_tile.line_size_bytes;
gfx_rapi->upload_texture(rgba32_buf, width, height);
}
static void import_texture_ia8(int tile) {
uint8_t rgba32_buf[16384];
for (uint32_t i = 0; i < rdp.loaded_texture[tile].size_bytes; i++) {
uint8_t intensity = rdp.loaded_texture[tile].addr[i] >> 4;
uint8_t alpha = rdp.loaded_texture[tile].addr[i] & 0xf;
uint8_t r = intensity;
uint8_t g = intensity;
uint8_t b = intensity;
rgba32_buf[4*i + 0] = SCALE_4_8(r);
rgba32_buf[4*i + 1] = SCALE_4_8(g);
rgba32_buf[4*i + 2] = SCALE_4_8(b);
rgba32_buf[4*i + 3] = SCALE_4_8(alpha);
}
uint32_t width = rdp.texture_tile.line_size_bytes;
uint32_t height = rdp.loaded_texture[tile].size_bytes / rdp.texture_tile.line_size_bytes;
gfx_rapi->upload_texture(rgba32_buf, width, height);
}
static void import_texture_ia16(int tile) {
uint8_t rgba32_buf[8192];
for (uint32_t i = 0; i < rdp.loaded_texture[tile].size_bytes / 2; i++) {
uint8_t intensity = rdp.loaded_texture[tile].addr[2 * i];
uint8_t alpha = rdp.loaded_texture[tile].addr[2 * i + 1];
uint8_t r = intensity;
uint8_t g = intensity;
uint8_t b = intensity;
rgba32_buf[4*i + 0] = r;
rgba32_buf[4*i + 1] = g;
rgba32_buf[4*i + 2] = b;
rgba32_buf[4*i + 3] = alpha;
}
uint32_t width = rdp.texture_tile.line_size_bytes / 2;
uint32_t height = rdp.loaded_texture[tile].size_bytes / rdp.texture_tile.line_size_bytes;
gfx_rapi->upload_texture(rgba32_buf, width, height);
}
static void import_texture_ci4(int tile) {
uint8_t rgba32_buf[32768];
for (uint32_t i = 0; i < rdp.loaded_texture[tile].size_bytes * 2; i++) {
uint8_t byte = rdp.loaded_texture[tile].addr[i / 2];
uint8_t idx = (byte >> (4 - (i % 2) * 4)) & 0xf;
uint16_t col16 = (rdp.palette[idx * 2] << 8) | rdp.palette[idx * 2 + 1]; // Big endian load
uint8_t a = col16 & 1;
uint8_t r = col16 >> 11;
uint8_t g = (col16 >> 6) & 0x1f;
uint8_t b = (col16 >> 1) & 0x1f;
rgba32_buf[4*i + 0] = SCALE_5_8(r);
rgba32_buf[4*i + 1] = SCALE_5_8(g);
rgba32_buf[4*i + 2] = SCALE_5_8(b);
rgba32_buf[4*i + 3] = a ? 255 : 0;
}
uint32_t width = rdp.texture_tile.line_size_bytes * 2;
uint32_t height = rdp.loaded_texture[tile].size_bytes / rdp.texture_tile.line_size_bytes;
gfx_rapi->upload_texture(rgba32_buf, width, height);
}
static void import_texture_ci8(int tile) {
uint8_t rgba32_buf[16384];
for (uint32_t i = 0; i < rdp.loaded_texture[tile].size_bytes; i++) {
uint8_t idx = rdp.loaded_texture[tile].addr[i];
uint16_t col16 = (rdp.palette[idx * 2] << 8) | rdp.palette[idx * 2 + 1]; // Big endian load
uint8_t a = col16 & 1;
uint8_t r = col16 >> 11;
uint8_t g = (col16 >> 6) & 0x1f;
uint8_t b = (col16 >> 1) & 0x1f;
rgba32_buf[4*i + 0] = SCALE_5_8(r);
rgba32_buf[4*i + 1] = SCALE_5_8(g);
rgba32_buf[4*i + 2] = SCALE_5_8(b);
rgba32_buf[4*i + 3] = a ? 255 : 0;
}
uint32_t width = rdp.texture_tile.line_size_bytes;
uint32_t height = rdp.loaded_texture[tile].size_bytes / rdp.texture_tile.line_size_bytes;
gfx_rapi->upload_texture(rgba32_buf, width, height);
}
static void import_texture(int tile) {
uint8_t fmt = rdp.texture_tile.fmt;
uint8_t siz = rdp.texture_tile.siz;
if (gfx_texture_cache_lookup(tile, &rendering_state.textures[tile], rdp.loaded_texture[tile].addr, fmt, siz)) {
return;
}
int t0 = get_time();
if (fmt == G_IM_FMT_RGBA) {
if (siz == G_IM_SIZ_16b) {
import_texture_rgba16(tile);
} else {
abort();
}
} else if (fmt == G_IM_FMT_IA) {
if (siz == G_IM_SIZ_4b) {
import_texture_ia4(tile);
} else if (siz == G_IM_SIZ_8b) {
import_texture_ia8(tile);
} else if (siz == G_IM_SIZ_16b) {
import_texture_ia16(tile);
} else {
abort();
}
} else if (fmt == G_IM_FMT_CI) {
if (siz == G_IM_SIZ_4b) {
import_texture_ci4(tile);
} else if (siz == G_IM_SIZ_8b) {
import_texture_ci8(tile);
} else {
abort();
}
} else {
abort();
}
int t1 = get_time();
//printf("Time diff: %d\n", t1 - t0);
}
static void gfx_normalize_vector(float v[3]) {
float s = sqrtf(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
v[0] /= s;
v[1] /= s;
v[2] /= s;
}
static void gfx_transposed_matrix_mul(float res[3], const float a[3], const float b[4][4]) {
res[0] = a[0] * b[0][0] + a[1] * b[0][1] + a[2] * b[0][2];
res[1] = a[0] * b[1][0] + a[1] * b[1][1] + a[2] * b[1][2];
res[2] = a[0] * b[2][0] + a[1] * b[2][1] + a[2] * b[2][2];
}
static void calculate_normal_dir(const Light_t *light, float coeffs[3]) {
float light_dir[3] = {
light->dir[0] / 127.0f,
light->dir[1] / 127.0f,
light->dir[2] / 127.0f
};
gfx_transposed_matrix_mul(coeffs, light_dir, rsp.modelview_matrix_stack[rsp.modelview_matrix_stack_size - 1]);
gfx_normalize_vector(coeffs);
}
static void gfx_matrix_mul(float res[4][4], const float a[4][4], const float b[4][4]) {
float tmp[4][4];
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
tmp[i][j] = a[i][0] * b[0][j] +
a[i][1] * b[1][j] +
a[i][2] * b[2][j] +
a[i][3] * b[3][j];
}
}
memcpy(res, tmp, sizeof(tmp));
}
static void gfx_sp_matrix(uint8_t parameters, const int32_t *addr) {
float matrix[4][4];
#if 0
// Original code when fixed point matrices were used
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j += 2) {
int32_t int_part = addr[i * 2 + j / 2];
uint32_t frac_part = addr[8 + i * 2 + j / 2];
matrix[i][j] = (int32_t)((int_part & 0xffff0000) | (frac_part >> 16)) / 65536.0f;
matrix[i][j + 1] = (int32_t)((int_part << 16) | (frac_part & 0xffff)) / 65536.0f;
}
}
#else
memcpy(matrix, addr, sizeof(matrix));
#endif
if (parameters & G_MTX_PROJECTION) {
if (parameters & G_MTX_LOAD) {
memcpy(rsp.P_matrix, matrix, sizeof(matrix));
} else {
gfx_matrix_mul(rsp.P_matrix, matrix, rsp.P_matrix);
}
} else { // G_MTX_MODELVIEW
if ((parameters & G_MTX_PUSH) && rsp.modelview_matrix_stack_size < 11) {
++rsp.modelview_matrix_stack_size;
memcpy(rsp.modelview_matrix_stack[rsp.modelview_matrix_stack_size - 1], rsp.modelview_matrix_stack[rsp.modelview_matrix_stack_size - 2], sizeof(matrix));
}
if (parameters & G_MTX_LOAD) {
memcpy(rsp.modelview_matrix_stack[rsp.modelview_matrix_stack_size - 1], matrix, sizeof(matrix));
} else {
gfx_matrix_mul(rsp.modelview_matrix_stack[rsp.modelview_matrix_stack_size - 1], matrix, rsp.modelview_matrix_stack[rsp.modelview_matrix_stack_size - 1]);
}
rsp.lights_changed = 1;
}
gfx_matrix_mul(rsp.MP_matrix, rsp.modelview_matrix_stack[rsp.modelview_matrix_stack_size - 1], rsp.P_matrix);
}
static void gfx_sp_pop_matrix(uint32_t count) {
while (count--) {
if (rsp.modelview_matrix_stack_size > 0) {
--rsp.modelview_matrix_stack_size;
if (rsp.modelview_matrix_stack_size > 0) {
gfx_matrix_mul(rsp.MP_matrix, rsp.modelview_matrix_stack[rsp.modelview_matrix_stack_size - 1], rsp.P_matrix);
}
}
}
}
static float gfx_adjust_x_for_aspect_ratio(float x) {
return x * (4.0f / 3.0f) / ((float)gfx_current_dimensions.width / (float)gfx_current_dimensions.height);
}
static void gfx_sp_vertex(size_t n_vertices, size_t dest_index, const Vtx *vertices) {
for (size_t i = 0; i < n_vertices; i++, dest_index++) {
const Vtx_t *v = &vertices[i].v;
const Vtx_tn *vn = &vertices[i].n;
struct LoadedVertex *d = &rsp.loaded_vertices[dest_index];
float x = v->ob[0] * rsp.MP_matrix[0][0] + v->ob[1] * rsp.MP_matrix[1][0] + v->ob[2] * rsp.MP_matrix[2][0] + rsp.MP_matrix[3][0];
float y = v->ob[0] * rsp.MP_matrix[0][1] + v->ob[1] * rsp.MP_matrix[1][1] + v->ob[2] * rsp.MP_matrix[2][1] + rsp.MP_matrix[3][1];
float z = v->ob[0] * rsp.MP_matrix[0][2] + v->ob[1] * rsp.MP_matrix[1][2] + v->ob[2] * rsp.MP_matrix[2][2] + rsp.MP_matrix[3][2];
float w = v->ob[0] * rsp.MP_matrix[0][3] + v->ob[1] * rsp.MP_matrix[1][3] + v->ob[2] * rsp.MP_matrix[2][3] + rsp.MP_matrix[3][3];
x = gfx_adjust_x_for_aspect_ratio(x);
short U = v->tc[0] * rsp.texture_scaling_factor.s >> 16;
short V = v->tc[1] * rsp.texture_scaling_factor.t >> 16;
if (rsp.geometry_mode & G_LIGHTING) {
if (rsp.lights_changed) {
for (int i = 0; i < rsp.current_num_lights - 1; i++) {
calculate_normal_dir(&rsp.current_lights[i], rsp.current_lights_coeffs[i]);
}
static const Light_t lookat_x = {{0, 0, 0}, 0, {0, 0, 0}, 0, {127, 0, 0}, 0};
static const Light_t lookat_y = {{0, 0, 0}, 0, {0, 0, 0}, 0, {0, 127, 0}, 0};
calculate_normal_dir(&lookat_x, rsp.current_lookat_coeffs[0]);
calculate_normal_dir(&lookat_y, rsp.current_lookat_coeffs[1]);
rsp.lights_changed = false;
}
int r = rsp.current_lights[rsp.current_num_lights - 1].col[0];
int g = rsp.current_lights[rsp.current_num_lights - 1].col[1];
int b = rsp.current_lights[rsp.current_num_lights - 1].col[2];
for (int i = 0; i < rsp.current_num_lights - 1; i++) {
float intensity = 0;
intensity += vn->n[0] * rsp.current_lights_coeffs[i][0];
intensity += vn->n[1] * rsp.current_lights_coeffs[i][1];
intensity += vn->n[2] * rsp.current_lights_coeffs[i][2];
intensity /= 127.0f;
if (intensity > 0.0f) {
r += intensity * rsp.current_lights[i].col[0];
g += intensity * rsp.current_lights[i].col[1];
b += intensity * rsp.current_lights[i].col[2];
}
}
d->color.r = r > 255 ? 255 : r;
d->color.g = g > 255 ? 255 : g;
d->color.b = b > 255 ? 255 : b;
if (rsp.geometry_mode & G_TEXTURE_GEN) {
float dotx = 0, doty = 0;
dotx += vn->n[0] * rsp.current_lookat_coeffs[0][0];
dotx += vn->n[1] * rsp.current_lookat_coeffs[0][1];
dotx += vn->n[2] * rsp.current_lookat_coeffs[0][2];
doty += vn->n[0] * rsp.current_lookat_coeffs[1][0];
doty += vn->n[1] * rsp.current_lookat_coeffs[1][1];
doty += vn->n[2] * rsp.current_lookat_coeffs[1][2];
U = (int32_t)((dotx / 127.0f + 1.0f) / 4.0f * rsp.texture_scaling_factor.s);
V = (int32_t)((doty / 127.0f + 1.0f) / 4.0f * rsp.texture_scaling_factor.t);
}
} else {
d->color.r = v->cn[0];
d->color.g = v->cn[1];
d->color.b = v->cn[2];
}
d->u = U;
d->v = V;
// trivial clip rejection
d->clip_rej = 0;
if (x < -w) d->clip_rej |= 1;
if (x > w) d->clip_rej |= 2;
if (y < -w) d->clip_rej |= 4;
if (y > w) d->clip_rej |= 8;
if (z < -w) d->clip_rej |= 16;
if (z > w) d->clip_rej |= 32;
d->x = x;
d->y = y;
d->z = z;
d->w = w;
if (rsp.geometry_mode & G_FOG) {
if (fabsf(w) < 0.001f) {
// To avoid division by zero
w = 0.001f;
}
float winv = 1.0f / w;
if (winv < 0.0f) {
winv = 32767.0f;
}
float fog_z = z * winv * rsp.fog_mul + rsp.fog_offset;
if (fog_z < 0) fog_z = 0;
if (fog_z > 255) fog_z = 255;
d->color.a = fog_z; // Use alpha variable to store fog factor
} else {
d->color.a = v->cn[3];
}
}
}
static void gfx_sp_tri1(uint8_t vtx1_idx, uint8_t vtx2_idx, uint8_t vtx3_idx) {
struct LoadedVertex *v1 = &rsp.loaded_vertices[vtx1_idx];
struct LoadedVertex *v2 = &rsp.loaded_vertices[vtx2_idx];
struct LoadedVertex *v3 = &rsp.loaded_vertices[vtx3_idx];
struct LoadedVertex *v_arr[3] = {v1, v2, v3};
//if (rand()%2) return;
if (v1->clip_rej & v2->clip_rej & v3->clip_rej) {
// The whole triangle lies outside the visible area
return;
}
if ((rsp.geometry_mode & G_CULL_BOTH) != 0) {
float dx1 = v1->x / (v1->w) - v2->x / (v2->w);
float dy1 = v1->y / (v1->w) - v2->y / (v2->w);
float dx2 = v3->x / (v3->w) - v2->x / (v2->w);
float dy2 = v3->y / (v3->w) - v2->y / (v2->w);
float cross = dx1 * dy2 - dy1 * dx2;
if ((v1->w < 0) ^ (v2->w < 0) ^ (v3->w < 0)) {
// If one vertex lies behind the eye, negating cross will give the correct result.
// If all vertices lie behind the eye, the triangle will be rejected anyway.
cross = -cross;
}
switch (rsp.geometry_mode & G_CULL_BOTH) {
case G_CULL_FRONT:
if (cross <= 0) return;
break;
case G_CULL_BACK:
if (cross >= 0) return;
break;
case G_CULL_BOTH:
// Why is this even an option?
return;
}
}
bool depth_test = (rsp.geometry_mode & G_ZBUFFER) == G_ZBUFFER;
if (depth_test != rendering_state.depth_test) {
gfx_flush();
gfx_rapi->set_depth_test(depth_test);
rendering_state.depth_test = depth_test;
}
bool z_upd = (rdp.other_mode_l & Z_UPD) == Z_UPD;
if (z_upd != rendering_state.depth_mask) {
gfx_flush();
gfx_rapi->set_depth_mask(z_upd);
rendering_state.depth_mask = z_upd;
}
bool zmode_decal = (rdp.other_mode_l & ZMODE_DEC) == ZMODE_DEC;
if (zmode_decal != rendering_state.decal_mode) {
gfx_flush();
gfx_rapi->set_zmode_decal(zmode_decal);
rendering_state.decal_mode = zmode_decal;
}
if (rdp.viewport_or_scissor_changed) {
if (memcmp(&rdp.viewport, &rendering_state.viewport, sizeof(rdp.viewport)) != 0) {
gfx_flush();
gfx_rapi->set_viewport(rdp.viewport.x, rdp.viewport.y, rdp.viewport.width, rdp.viewport.height);
rendering_state.viewport = rdp.viewport;
}
if (memcmp(&rdp.scissor, &rendering_state.scissor, sizeof(rdp.scissor)) != 0) {
gfx_flush();
gfx_rapi->set_scissor(rdp.scissor.x, rdp.scissor.y, rdp.scissor.width, rdp.scissor.height);
rendering_state.scissor = rdp.scissor;
}
rdp.viewport_or_scissor_changed = false;
}
uint32_t cc_id = rdp.combine_mode;
bool use_alpha = (rdp.other_mode_l & (G_BL_A_MEM << 18)) == 0;
bool use_fog = (rdp.other_mode_l >> 30) == G_BL_CLR_FOG;
bool texture_edge = (rdp.other_mode_l & CVG_X_ALPHA) == CVG_X_ALPHA;
if (texture_edge) {
use_alpha = true;
}
if (use_alpha) cc_id |= SHADER_OPT_ALPHA;
if (use_fog) cc_id |= SHADER_OPT_FOG;
if (texture_edge) cc_id |= SHADER_OPT_TEXTURE_EDGE;
if (!use_alpha) {
cc_id &= ~0xfff000;
}
struct ColorCombiner *comb = gfx_lookup_or_create_color_combiner(cc_id);
struct ShaderProgram *prg = comb->prg;
if (prg != rendering_state.shader_program) {
gfx_flush();
gfx_rapi->unload_shader(rendering_state.shader_program);
gfx_rapi->load_shader(prg);
rendering_state.shader_program = prg;
}
if (use_alpha != rendering_state.alpha_blend) {
gfx_flush();
gfx_rapi->set_use_alpha(use_alpha);
rendering_state.alpha_blend = use_alpha;
}
uint8_t num_inputs;
bool used_textures[2];
gfx_rapi->shader_get_info(prg, &num_inputs, used_textures);
for (int i = 0; i < 2; i++) {
if (used_textures[i]) {
if (rdp.textures_changed[i]) {
gfx_flush();
import_texture(i);
rdp.textures_changed[i] = false;
}
bool linear_filter = (rdp.other_mode_h & (3U << G_MDSFT_TEXTFILT)) != G_TF_POINT;
if (linear_filter != rendering_state.textures[i]->linear_filter || rdp.texture_tile.cms != rendering_state.textures[i]->cms || rdp.texture_tile.cmt != rendering_state.textures[i]->cmt) {
gfx_flush();
gfx_rapi->set_sampler_parameters(i, linear_filter, rdp.texture_tile.cms, rdp.texture_tile.cmt);
rendering_state.textures[i]->linear_filter = linear_filter;
rendering_state.textures[i]->cms = rdp.texture_tile.cms;
rendering_state.textures[i]->cmt = rdp.texture_tile.cmt;
}
}
}
bool use_texture = used_textures[0] || used_textures[1];
uint32_t tex_width = (rdp.texture_tile.lrs - rdp.texture_tile.uls + 4) / 4;
uint32_t tex_height = (rdp.texture_tile.lrt - rdp.texture_tile.ult + 4) / 4;
bool z_is_from_0_to_1 = gfx_rapi->z_is_from_0_to_1();
for (int i = 0; i < 3; i++) {
float z = v_arr[i]->z, w = v_arr[i]->w;
if (z_is_from_0_to_1) {
z = (z + w) / 2.0f;
}
buf_vbo[buf_vbo_len++] = v_arr[i]->x;
buf_vbo[buf_vbo_len++] = v_arr[i]->y;
buf_vbo[buf_vbo_len++] = z;
buf_vbo[buf_vbo_len++] = w;
if (use_texture) {
float u = (v_arr[i]->u - rdp.texture_tile.uls * 8) / 32.0f;
float v = (v_arr[i]->v - rdp.texture_tile.ult * 8) / 32.0f;
if ((rdp.other_mode_h & (3U << G_MDSFT_TEXTFILT)) != G_TF_POINT) {
// Linear filter adds 0.5f to the coordinates
u += 0.5f;
v += 0.5f;
}
buf_vbo[buf_vbo_len++] = u / tex_width;
buf_vbo[buf_vbo_len++] = v / tex_height;
}
if (use_fog) {
buf_vbo[buf_vbo_len++] = rdp.fog_color.r / 255.0f;
buf_vbo[buf_vbo_len++] = rdp.fog_color.g / 255.0f;
buf_vbo[buf_vbo_len++] = rdp.fog_color.b / 255.0f;
buf_vbo[buf_vbo_len++] = v_arr[i]->color.a / 255.0f; // fog factor (not alpha)
}
for (int j = 0; j < num_inputs; j++) {
struct RGBA *color;
struct RGBA tmp;
for (int k = 0; k < 1 + (use_alpha ? 1 : 0); k++) {
switch (comb->shader_input_mapping[k][j]) {
case CC_PRIM:
color = &rdp.prim_color;
break;
case CC_SHADE:
color = &v_arr[i]->color;
break;
case CC_ENV:
color = &rdp.env_color;
break;
case CC_LOD:
{
float distance_frac = (v1->w - 3000.0f) / 3000.0f;
if (distance_frac < 0.0f) distance_frac = 0.0f;
if (distance_frac > 1.0f) distance_frac = 1.0f;
tmp.r = tmp.g = tmp.b = tmp.a = distance_frac * 255.0f;
color = &tmp;
break;
}
default:
memset(&tmp, 0, sizeof(tmp));
color = &tmp;
break;
}
if (k == 0) {
buf_vbo[buf_vbo_len++] = color->r / 255.0f;
buf_vbo[buf_vbo_len++] = color->g / 255.0f;
buf_vbo[buf_vbo_len++] = color->b / 255.0f;
} else {
if (use_fog && color == &v_arr[i]->color) {
// Shade alpha is 100% for fog
buf_vbo[buf_vbo_len++] = 1.0f;
} else {
buf_vbo[buf_vbo_len++] = color->a / 255.0f;
}
}
}
}
/*struct RGBA *color = &v_arr[i]->color;
buf_vbo[buf_vbo_len++] = color->r / 255.0f;
buf_vbo[buf_vbo_len++] = color->g / 255.0f;
buf_vbo[buf_vbo_len++] = color->b / 255.0f;
buf_vbo[buf_vbo_len++] = color->a / 255.0f;*/
}
if (++buf_vbo_num_tris == MAX_BUFFERED) {
gfx_flush();
}
}
static void gfx_sp_geometry_mode(uint32_t clear, uint32_t set) {
rsp.geometry_mode &= ~clear;
rsp.geometry_mode |= set;
}
static void gfx_calc_and_set_viewport(const Vp_t *viewport) {
// 2 bits fraction
float width = 2.0f * viewport->vscale[0] / 4.0f;
float height = 2.0f * viewport->vscale[1] / 4.0f;
float x = (viewport->vtrans[0] / 4.0f) - width / 2.0f;
float y = SCREEN_HEIGHT - ((viewport->vtrans[1] / 4.0f) + height / 2.0f);
width *= RATIO_X;
height *= RATIO_Y;
x *= RATIO_X;
y *= RATIO_Y;
rdp.viewport.x = x;
rdp.viewport.y = y;
rdp.viewport.width = width;
rdp.viewport.height = height;
rdp.viewport_or_scissor_changed = true;
}
static void gfx_sp_movemem(uint8_t index, uint8_t offset, const void* data) {
switch (index) {
case G_MV_VIEWPORT:
gfx_calc_and_set_viewport((const Vp_t *) data);
break;
#if 0
case G_MV_LOOKATY:
case G_MV_LOOKATX:
memcpy(rsp.current_lookat + (index - G_MV_LOOKATY) / 2, data, sizeof(Light_t));
//rsp.lights_changed = 1;
break;
#endif
#ifdef F3DEX_GBI_2
case G_MV_LIGHT: {
int lightidx = offset / 24 - 2;
if (lightidx >= 0 && lightidx <= MAX_LIGHTS) { // skip lookat
// NOTE: reads out of bounds if it is an ambient light
memcpy(rsp.current_lights + lightidx, data, sizeof(Light_t));
}
break;
}
#else
case G_MV_L0:
case G_MV_L1:
case G_MV_L2:
// NOTE: reads out of bounds if it is an ambient light
memcpy(rsp.current_lights + (index - G_MV_L0) / 2, data, sizeof(Light_t));
break;
#endif
}
}
static void gfx_sp_moveword(uint8_t index, uint16_t offset, uint32_t data) {
switch (index) {
case G_MW_NUMLIGHT:
#ifdef F3DEX_GBI_2
rsp.current_num_lights = data / 24 + 1; // add ambient light
#else
// Ambient light is included
// The 31th bit is a flag that lights should be recalculated
rsp.current_num_lights = (data - 0x80000000U) / 32;
#endif
rsp.lights_changed = 1;
break;
case G_MW_FOG:
rsp.fog_mul = (int16_t)(data >> 16);
rsp.fog_offset = (int16_t)data;
break;
}
}
static void gfx_sp_texture(uint16_t sc, uint16_t tc, uint8_t level, uint8_t tile, uint8_t on) {
rsp.texture_scaling_factor.s = sc;
rsp.texture_scaling_factor.t = tc;
}
static void gfx_dp_set_scissor(uint32_t mode, uint32_t ulx, uint32_t uly, uint32_t lrx, uint32_t lry) {
float x = ulx / 4.0f * RATIO_X;
float y = (SCREEN_HEIGHT - lry / 4.0f) * RATIO_Y;
float width = (lrx - ulx) / 4.0f * RATIO_X;
float height = (lry - uly) / 4.0f * RATIO_Y;
rdp.scissor.x = x;
rdp.scissor.y = y;
rdp.scissor.width = width;
rdp.scissor.height = height;
rdp.viewport_or_scissor_changed = true;
}
static void gfx_dp_set_texture_image(uint32_t format, uint32_t size, uint32_t width, const void* addr) {
rdp.texture_to_load.addr = addr;
rdp.texture_to_load.siz = size;
}
static void gfx_dp_set_tile(uint8_t fmt, uint32_t siz, uint32_t line, uint32_t tmem, uint8_t tile, uint32_t palette, uint32_t cmt, uint32_t maskt, uint32_t shiftt, uint32_t cms, uint32_t masks, uint32_t shifts) {
SUPPORT_CHECK(siz != G_IM_SIZ_32b);
if (tile == G_TX_RENDERTILE) {
SUPPORT_CHECK(palette == 0); // palette should set upper 4 bits of color index in 4b mode
rdp.texture_tile.fmt = fmt;
rdp.texture_tile.siz = siz;
rdp.texture_tile.cms = cms;
rdp.texture_tile.cmt = cmt;
rdp.texture_tile.line_size_bytes = line * 8;
rdp.textures_changed[0] = true;
rdp.textures_changed[1] = true;
}
if (tile == G_TX_LOADTILE) {
rdp.texture_to_load.tile_number = tmem / 256;
}
}
static void gfx_dp_set_tile_size(uint8_t tile, uint16_t uls, uint16_t ult, uint16_t lrs, uint16_t lrt) {
if (tile == G_TX_RENDERTILE) {
rdp.texture_tile.uls = uls;
rdp.texture_tile.ult = ult;
rdp.texture_tile.lrs = lrs;
rdp.texture_tile.lrt = lrt;
rdp.textures_changed[0] = true;
rdp.textures_changed[1] = true;
}
}
static void gfx_dp_load_tlut(uint8_t tile, uint32_t high_index) {
SUPPORT_CHECK(tile == G_TX_LOADTILE);
SUPPORT_CHECK(rdp.texture_to_load.siz == G_IM_SIZ_16b);
rdp.palette = rdp.texture_to_load.addr;
}
static void gfx_dp_load_block(uint8_t tile, uint32_t uls, uint32_t ult, uint32_t lrs, uint32_t dxt) {
if (tile == 1) return;
SUPPORT_CHECK(tile == G_TX_LOADTILE);
SUPPORT_CHECK(uls == 0);
SUPPORT_CHECK(ult == 0);
// The lrs field rather seems to be number of pixels to load
uint32_t word_size_shift;
switch (rdp.texture_to_load.siz) {
case G_IM_SIZ_4b:
word_size_shift = 0; // Or -1? It's unused in SM64 anyway.
break;
case G_IM_SIZ_8b:
word_size_shift = 0;
break;
case G_IM_SIZ_16b:
word_size_shift = 1;
break;
case G_IM_SIZ_32b:
word_size_shift = 2;
break;
}
uint32_t size_bytes = (lrs + 1) << word_size_shift;
rdp.loaded_texture[rdp.texture_to_load.tile_number].size_bytes = size_bytes;
assert(size_bytes <= 4096 && "bug: too big texture");
rdp.loaded_texture[rdp.texture_to_load.tile_number].addr = rdp.texture_to_load.addr;
rdp.textures_changed[rdp.texture_to_load.tile_number] = true;
}
static uint8_t color_comb_component(uint32_t v) {
switch (v) {
case G_CCMUX_TEXEL0:
return CC_TEXEL0;
case G_CCMUX_TEXEL1:
return CC_TEXEL1;
case G_CCMUX_PRIMITIVE:
return CC_PRIM;
case G_CCMUX_SHADE:
return CC_SHADE;
case G_CCMUX_ENVIRONMENT:
return CC_ENV;
case G_CCMUX_TEXEL0_ALPHA:
return CC_TEXEL0A;
case G_CCMUX_LOD_FRACTION:
return CC_LOD;
default:
return CC_0;
}
}
static inline uint32_t color_comb(uint32_t a, uint32_t b, uint32_t c, uint32_t d) {
return color_comb_component(a) |
(color_comb_component(b) << 3) |
(color_comb_component(c) << 6) |
(color_comb_component(d) << 9);
}
static void gfx_dp_set_combine_mode(uint32_t rgb, uint32_t alpha) {
rdp.combine_mode = rgb | (alpha << 12);
}
static void gfx_dp_set_env_color(uint8_t r, uint8_t g, uint8_t b, uint8_t a) {
rdp.env_color.r = r;
rdp.env_color.g = g;
rdp.env_color.b = b;
rdp.env_color.a = a;
}
static void gfx_dp_set_prim_color(uint8_t r, uint8_t g, uint8_t b, uint8_t a) {
rdp.prim_color.r = r;
rdp.prim_color.g = g;
rdp.prim_color.b = b;
rdp.prim_color.a = a;
}
static void gfx_dp_set_fog_color(uint8_t r, uint8_t g, uint8_t b, uint8_t a) {
rdp.fog_color.r = r;
rdp.fog_color.g = g;
rdp.fog_color.b = b;
rdp.fog_color.a = a;
}
static void gfx_dp_set_fill_color(uint32_t packed_color) {
uint16_t col16 = (uint16_t)packed_color;
uint32_t r = col16 >> 11;
uint32_t g = (col16 >> 6) & 0x1f;
uint32_t b = (col16 >> 1) & 0x1f;
uint32_t a = col16 & 1;
rdp.fill_color.r = SCALE_5_8(r);
rdp.fill_color.g = SCALE_5_8(g);
rdp.fill_color.b = SCALE_5_8(b);
rdp.fill_color.a = a * 255;
}
static void gfx_draw_rectangle(int32_t ulx, int32_t uly, int32_t lrx, int32_t lry) {
uint32_t saved_other_mode_h = rdp.other_mode_h;
uint32_t cycle_type = (rdp.other_mode_h & (3U << G_MDSFT_CYCLETYPE));
if (cycle_type == G_CYC_COPY) {
rdp.other_mode_h = (rdp.other_mode_h & ~(3U << G_MDSFT_TEXTFILT)) | G_TF_POINT;
}
// U10.2 coordinates
float ulxf = ulx;
float ulyf = uly;
float lrxf = lrx;
float lryf = lry;
ulxf = ulxf / (4.0f * HALF_SCREEN_WIDTH) - 1.0f;
ulyf = -(ulyf / (4.0f * HALF_SCREEN_HEIGHT)) + 1.0f;
lrxf = lrxf / (4.0f * HALF_SCREEN_WIDTH) - 1.0f;
lryf = -(lryf / (4.0f * HALF_SCREEN_HEIGHT)) + 1.0f;
ulxf = gfx_adjust_x_for_aspect_ratio(ulxf);
lrxf = gfx_adjust_x_for_aspect_ratio(lrxf);
struct LoadedVertex* ul = &rsp.loaded_vertices[MAX_VERTICES + 0];
struct LoadedVertex* ll = &rsp.loaded_vertices[MAX_VERTICES + 1];
struct LoadedVertex* lr = &rsp.loaded_vertices[MAX_VERTICES + 2];
struct LoadedVertex* ur = &rsp.loaded_vertices[MAX_VERTICES + 3];
ul->x = ulxf;
ul->y = ulyf;
ul->z = -1.0f;
ul->w = 1.0f;
ll->x = ulxf;
ll->y = lryf;
ll->z = -1.0f;
ll->w = 1.0f;
lr->x = lrxf;
lr->y = lryf;
lr->z = -1.0f;
lr->w = 1.0f;
ur->x = lrxf;
ur->y = ulyf;
ur->z = -1.0f;
ur->w = 1.0f;
// The coordinates for texture rectangle shall bypass the viewport setting
struct XYWidthHeight default_viewport = {0, 0, gfx_current_dimensions.width, gfx_current_dimensions.height};
struct XYWidthHeight viewport_saved = rdp.viewport;
uint32_t geometry_mode_saved = rsp.geometry_mode;
rdp.viewport = default_viewport;
rdp.viewport_or_scissor_changed = true;
rsp.geometry_mode = 0;
gfx_sp_tri1(MAX_VERTICES + 0, MAX_VERTICES + 1, MAX_VERTICES + 3);
gfx_sp_tri1(MAX_VERTICES + 1, MAX_VERTICES + 2, MAX_VERTICES + 3);
rsp.geometry_mode = geometry_mode_saved;
rdp.viewport = viewport_saved;
rdp.viewport_or_scissor_changed = true;
if (cycle_type == G_CYC_COPY) {
rdp.other_mode_h = saved_other_mode_h;
}
}
static void gfx_dp_texture_rectangle(int32_t ulx, int32_t uly, int32_t lrx, int32_t lry, uint8_t tile, int16_t uls, int16_t ult, int16_t dsdx, int16_t dtdy, bool flip) {
uint32_t saved_combine_mode = rdp.combine_mode;
if ((rdp.other_mode_h & (3U << G_MDSFT_CYCLETYPE)) == G_CYC_COPY) {
// Per RDP Command Summary Set Tile's shift s and this dsdx should be set to 4 texels
// Divide by 4 to get 1 instead
dsdx >>= 2;
// Color combiner is turned off in copy mode
gfx_dp_set_combine_mode(color_comb(0, 0, 0, G_CCMUX_TEXEL0), color_comb(0, 0, 0, G_ACMUX_TEXEL0));
// Per documentation one extra pixel is added in this modes to each edge
lrx += 1 << 2;
lry += 1 << 2;
}
// uls and ult are S10.5
// dsdx and dtdy are S5.10
// lrx, lry, ulx, uly are U10.2
// lrs, lrt are S10.5
if (flip) {
dsdx = -dsdx;
dtdy = -dtdy;
}
int16_t width = !flip ? lrx - ulx : lry - uly;
int16_t height = !flip ? lry - uly : lrx - ulx;
float lrs = ((uls << 7) + dsdx * width) >> 7;
float lrt = ((ult << 7) + dtdy * height) >> 7;
struct LoadedVertex* ul = &rsp.loaded_vertices[MAX_VERTICES + 0];
struct LoadedVertex* ll = &rsp.loaded_vertices[MAX_VERTICES + 1];
struct LoadedVertex* lr = &rsp.loaded_vertices[MAX_VERTICES + 2];
struct LoadedVertex* ur = &rsp.loaded_vertices[MAX_VERTICES + 3];
ul->u = uls;
ul->v = ult;
lr->u = lrs;
lr->v = lrt;
if (!flip) {
ll->u = uls;
ll->v = lrt;
ur->u = lrs;
ur->v = ult;
} else {
ll->u = lrs;
ll->v = ult;
ur->u = uls;
ur->v = lrt;
}
gfx_draw_rectangle(ulx, uly, lrx, lry);
rdp.combine_mode = saved_combine_mode;
}
static void gfx_dp_fill_rectangle(int32_t ulx, int32_t uly, int32_t lrx, int32_t lry) {
if (rdp.color_image_address == rdp.z_buf_address) {
// Don't clear Z buffer here since we already did it with glClear
return;
}
uint32_t mode = (rdp.other_mode_h & (3U << G_MDSFT_CYCLETYPE));
if (mode == G_CYC_COPY || mode == G_CYC_FILL) {
// Per documentation one extra pixel is added in this modes to each edge
lrx += 1 << 2;
lry += 1 << 2;
}
for (int i = MAX_VERTICES; i < MAX_VERTICES + 4; i++) {
struct LoadedVertex* v = &rsp.loaded_vertices[i];
v->color = rdp.fill_color;
}
uint32_t saved_combine_mode = rdp.combine_mode;
gfx_dp_set_combine_mode(color_comb(0, 0, 0, G_CCMUX_SHADE), color_comb(0, 0, 0, G_ACMUX_SHADE));
gfx_draw_rectangle(ulx, uly, lrx, lry);
rdp.combine_mode = saved_combine_mode;
}
static void gfx_dp_set_z_image(void *z_buf_address) {
rdp.z_buf_address = z_buf_address;
}
static void gfx_dp_set_color_image(uint32_t format, uint32_t size, uint32_t width, void* address) {
rdp.color_image_address = address;
}
static void gfx_sp_set_other_mode(uint32_t shift, uint32_t num_bits, uint64_t mode) {
uint64_t mask = (((uint64_t)1 << num_bits) - 1) << shift;
uint64_t om = rdp.other_mode_l | ((uint64_t)rdp.other_mode_h << 32);
om = (om & ~mask) | mode;
rdp.other_mode_l = (uint32_t)om;
rdp.other_mode_h = (uint32_t)(om >> 32);
}
static inline void *seg_addr(uintptr_t w1) {
return (void *) w1;
}
#define C0(pos, width) ((cmd->words.w0 >> (pos)) & ((1U << width) - 1))
#define C1(pos, width) ((cmd->words.w1 >> (pos)) & ((1U << width) - 1))
static void gfx_run_dl(Gfx* cmd) {
int dummy = 0;
for (;;) {
uint32_t opcode = cmd->words.w0 >> 24;
switch (opcode) {
// RSP commands:
case G_MTX:
#ifdef F3DEX_GBI_2
gfx_sp_matrix(C0(0, 8) ^ G_MTX_PUSH, (const int32_t *) seg_addr(cmd->words.w1));
#else
gfx_sp_matrix(C0(16, 8), (const int32_t *) seg_addr(cmd->words.w1));
#endif
break;
case (uint8_t)G_POPMTX:
#ifdef F3DEX_GBI_2
gfx_sp_pop_matrix(cmd->words.w1 / 64);
#else
gfx_sp_pop_matrix(1);
#endif
break;
case G_MOVEMEM:
#ifdef F3DEX_GBI_2
gfx_sp_movemem(C0(0, 8), C0(8, 8) * 8, seg_addr(cmd->words.w1));
#else
gfx_sp_movemem(C0(16, 8), 0, seg_addr(cmd->words.w1));
#endif
break;
case (uint8_t)G_MOVEWORD:
#ifdef F3DEX_GBI_2
gfx_sp_moveword(C0(16, 8), C0(0, 16), cmd->words.w1);
#else
gfx_sp_moveword(C0(0, 8), C0(8, 16), cmd->words.w1);
#endif
break;
case (uint8_t)G_TEXTURE:
#ifdef F3DEX_GBI_2
gfx_sp_texture(C1(16, 16), C1(0, 16), C0(11, 3), C0(8, 3), C0(1, 7));
#else
gfx_sp_texture(C1(16, 16), C1(0, 16), C0(11, 3), C0(8, 3), C0(0, 8));
#endif
break;
case G_VTX:
#ifdef F3DEX_GBI_2
gfx_sp_vertex(C0(12, 8), C0(1, 7) - C0(12, 8), seg_addr(cmd->words.w1));
#elif defined(F3DEX_GBI) || defined(F3DLP_GBI)
gfx_sp_vertex(C0(10, 6), C0(16, 8) / 2, seg_addr(cmd->words.w1));
#else
gfx_sp_vertex((C0(0, 16)) / sizeof(Vtx), C0(16, 4), seg_addr(cmd->words.w1));
#endif
break;
case G_DL:
if (C0(16, 1) == 0) {
// Push return address
gfx_run_dl((Gfx *)seg_addr(cmd->words.w1));
} else {
cmd = (Gfx *)seg_addr(cmd->words.w1);
--cmd; // increase after break
}
break;
case (uint8_t)G_ENDDL:
return;
#ifdef F3DEX_GBI_2
case G_GEOMETRYMODE:
gfx_sp_geometry_mode(~C0(0, 24), cmd->words.w1);
break;
#else
case (uint8_t)G_SETGEOMETRYMODE:
gfx_sp_geometry_mode(0, cmd->words.w1);
break;
case (uint8_t)G_CLEARGEOMETRYMODE:
gfx_sp_geometry_mode(cmd->words.w1, 0);
break;
#endif
case (uint8_t)G_TRI1:
#ifdef F3DEX_GBI_2
gfx_sp_tri1(C0(16, 8) / 2, C0(8, 8) / 2, C0(0, 8) / 2);
#elif defined(F3DEX_GBI) || defined(F3DLP_GBI)
gfx_sp_tri1(C1(16, 8) / 2, C1(8, 8) / 2, C1(0, 8) / 2);
#else
gfx_sp_tri1(C1(16, 8) / 10, C1(8, 8) / 10, C1(0, 8) / 10);
#endif
break;
#if defined(F3DEX_GBI) || defined(F3DLP_GBI)
case (uint8_t)G_TRI2:
gfx_sp_tri1(C0(16, 8) / 2, C0(8, 8) / 2, C0(0, 8) / 2);
gfx_sp_tri1(C1(16, 8) / 2, C1(8, 8) / 2, C1(0, 8) / 2);
break;
#endif
case (uint8_t)G_SETOTHERMODE_L:
#ifdef F3DEX_GBI_2
gfx_sp_set_other_mode(31 - C0(8, 8) - C0(0, 8), C0(0, 8) + 1, cmd->words.w1);
#else
gfx_sp_set_other_mode(C0(8, 8), C0(0, 8), cmd->words.w1);
#endif
break;
case (uint8_t)G_SETOTHERMODE_H:
#ifdef F3DEX_GBI_2
gfx_sp_set_other_mode(63 - C0(8, 8) - C0(0, 8), C0(0, 8) + 1, (uint64_t) cmd->words.w1 << 32);
#else
gfx_sp_set_other_mode(C0(8, 8) + 32, C0(0, 8), (uint64_t) cmd->words.w1 << 32);
#endif
break;
// RDP Commands:
case G_SETTIMG:
gfx_dp_set_texture_image(C0(21, 3), C0(19, 2), C0(0, 10), seg_addr(cmd->words.w1));
break;
case G_LOADBLOCK:
gfx_dp_load_block(C1(24, 3), C0(12, 12), C0(0, 12), C1(12, 12), C1(0, 12));
break;
case G_SETTILE:
gfx_dp_set_tile(C0(21, 3), C0(19, 2), C0(9, 9), C0(0, 9), C1(24, 3), C1(20, 4), C1(18, 2), C1(14, 4), C1(10, 4), C1(8, 2), C1(4, 4), C1(0, 4));
break;
case G_SETTILESIZE:
gfx_dp_set_tile_size(C1(24, 3), C0(12, 12), C0(0, 12), C1(12, 12), C1(0, 12));
break;
case G_LOADTLUT:
gfx_dp_load_tlut(C1(24, 3), C1(14, 10));
break;
case G_SETENVCOLOR:
gfx_dp_set_env_color(C1(24, 8), C1(16, 8), C1(8, 8), C1(0, 8));
break;
case G_SETPRIMCOLOR:
gfx_dp_set_prim_color(C1(24, 8), C1(16, 8), C1(8, 8), C1(0, 8));
break;
case G_SETFOGCOLOR:
gfx_dp_set_fog_color(C1(24, 8), C1(16, 8), C1(8, 8), C1(0, 8));
break;
case G_SETFILLCOLOR:
gfx_dp_set_fill_color(cmd->words.w1);
break;
case G_SETCOMBINE:
gfx_dp_set_combine_mode(
color_comb(C0(20, 4), C1(28, 4), C0(15, 5), C1(15, 3)),
color_comb(C0(12, 3), C1(12, 3), C0(9, 3), C1(9, 3)));
/*color_comb(C0(5, 4), C1(24, 4), C0(0, 5), C1(6, 3)),
color_comb(C1(21, 3), C1(3, 3), C1(18, 3), C1(0, 3)));*/
break;
// G_SETPRIMCOLOR, G_CCMUX_PRIMITIVE, G_ACMUX_PRIMITIVE, is used by Goddard
// G_CCMUX_TEXEL1, LOD_FRACTION is used in Bowser room 1
case G_TEXRECT:
case G_TEXRECTFLIP:
{
int32_t lrx, lry, tile, ulx, uly;
uint32_t uls, ult, dsdx, dtdy;
#ifdef F3DEX_GBI_2E
lrx = (int32_t)(C0(0, 24) << 8) >> 8;
lry = (int32_t)(C1(0, 24) << 8) >> 8;
++cmd;
ulx = (int32_t)(C0(0, 24) << 8) >> 8;
uly = (int32_t)(C1(0, 24) << 8) >> 8;
++cmd;
uls = C0(16, 16);
ult = C0(0, 16);
dsdx = C1(16, 16);
dtdy = C1(0, 16);
#else
lrx = C0(12, 12);
lry = C0(0, 12);
tile = C1(24, 3);
ulx = C1(12, 12);
uly = C1(0, 12);
++cmd;
uls = C1(16, 16);
ult = C1(0, 16);
++cmd;
dsdx = C1(16, 16);
dtdy = C1(0, 16);
#endif
gfx_dp_texture_rectangle(ulx, uly, lrx, lry, tile, uls, ult, dsdx, dtdy, opcode == G_TEXRECTFLIP);
break;
}
case G_FILLRECT:
#ifdef F3DEX_GBI_2E
{
int32_t lrx, lry, ulx, uly;
lrx = (int32_t)(C0(0, 24) << 8) >> 8;
lry = (int32_t)(C1(0, 24) << 8) >> 8;
++cmd;
ulx = (int32_t)(C0(0, 24) << 8) >> 8;
uly = (int32_t)(C1(0, 24) << 8) >> 8;
gfx_dp_fill_rectangle(ulx, uly, lrx, lry);
break;
}
#else
gfx_dp_fill_rectangle(C1(12, 12), C1(0, 12), C0(12, 12), C0(0, 12));
break;
#endif
case G_SETSCISSOR:
gfx_dp_set_scissor(C1(24, 2), C0(12, 12), C0(0, 12), C1(12, 12), C1(0, 12));
break;
case G_SETZIMG:
gfx_dp_set_z_image(seg_addr(cmd->words.w1));
break;
case G_SETCIMG:
gfx_dp_set_color_image(C0(21, 3), C0(19, 2), C0(0, 11), seg_addr(cmd->words.w1));
break;
}
++cmd;
}
}
static void gfx_sp_reset() {
rsp.modelview_matrix_stack_size = 1;
rsp.current_num_lights = 2;
rsp.lights_changed = true;
}
void gfx_get_dimensions(uint32_t *width, uint32_t *height) {
gfx_wapi->get_dimensions(width, height);
}
void gfx_init(struct GfxWindowManagerAPI *wapi, struct GfxRenderingAPI *rapi) {
gfx_wapi = wapi;
gfx_rapi = rapi;
gfx_wapi->init();
gfx_rapi->init();
// Used in the 120 star TAS
static uint32_t precomp_shaders[] = {
0x01200200,
0x00000045,
0x00000200,
0x01200a00,
0x00000a00,
0x01a00045,
0x00000551,
0x01045045,
0x05a00a00,
0x01200045,
0x05045045,
0x01045a00,
0x01a00a00,
0x0000038d,
0x01081081,
0x0120038d,
0x03200045,
0x03200a00,
0x01a00a6f,
0x01141045,
0x07a00a00,
0x05200200,
0x03200200
};
for (size_t i = 0; i < sizeof(precomp_shaders) / sizeof(uint32_t); i++) {
gfx_lookup_or_create_shader_program(precomp_shaders[i]);
}
}
void gfx_start_frame(void) {
gfx_wapi->handle_events();
gfx_wapi->get_dimensions(&gfx_current_dimensions.width, &gfx_current_dimensions.height);
if (gfx_current_dimensions.height == 0) {
// Avoid division by zero
gfx_current_dimensions.height = 1;
}
gfx_current_dimensions.aspect_ratio = (float)gfx_current_dimensions.width / (float)gfx_current_dimensions.height;
}
void gfx_run(Gfx *commands) {
gfx_sp_reset();
//puts("New frame");
if (!gfx_wapi->start_frame()) {
dropped_frame = true;
return;
}
dropped_frame = false;
double t0 = gfx_wapi->get_time();
gfx_rapi->start_frame();
gfx_run_dl(commands);
gfx_flush();
double t1 = gfx_wapi->get_time();
//printf("Process %f %f\n", t1, t1 - t0);
gfx_wapi->swap_buffers_begin();
}
void gfx_end_frame(void) {
if (!dropped_frame) {
gfx_wapi->swap_buffers_end();
}
}
View Git Blame Copy Permalink