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/*
* (C) Gražvydas "notaz" Ignotas, 2011
*
* This work is licensed under the terms of any of these licenses
* (at your option):
* - GNU GPL, version 2 or later.
* - GNU LGPL, version 2.1 or later.
* See the COPYING file in the top-level directory.
*/
#include <stdio.h>
#ifdef _WIN32
#include <mman.h>
#else
#include <sys/mman.h>
#endif
extern const unsigned char cmd_lengths[256];
#define command_lengths cmd_lengths
static unsigned int *ex_regs;
static int initialized;
#define PCSX
#define SET_Ex(r, v) \
ex_regs[r] = v
#include "psx_gpu/psx_gpu.c"
#include "psx_gpu/psx_gpu_parse.c"
#include "../gpulib/gpu.h"
static psx_gpu_struct egpu __attribute__((aligned(256)));
int do_cmd_list(uint32_t *list, int count, int *last_cmd)
{
int ret;
if (gpu.state.enhancement_active)
ret = gpu_parse_enhanced(&egpu, list, count * 4, (u32 *)last_cmd);
else
ret = gpu_parse(&egpu, list, count * 4, (u32 *)last_cmd);
ex_regs[1] &= ~0x1ff;
ex_regs[1] |= egpu.texture_settings & 0x1ff;
return ret;
}
#define ENHANCEMENT_BUF_SIZE (1024 * 1024 * 2 * 4 + 4096 * 2)
static uint16_t *get_enhancement_bufer(int *x, int *y, int *w, int *h,
int *vram_h)
{
uint16_t *ret = select_enhancement_buf_ptr(&egpu, *x);
*x *= 2;
*y *= 2;
*w = *w * 2;
*h = *h * 2;
*vram_h = 1024;
return ret;
}
static void map_enhancement_buffer(void)
{
// currently we use 4x 1024*1024 buffers instead of single 2048*1024
// to be able to reuse 1024-width code better (triangle setup,
// dithering phase, lines).
egpu.enhancement_buf_ptr = gpu.mmap(ENHANCEMENT_BUF_SIZE);
if (egpu.enhancement_buf_ptr == NULL) {
fprintf(stderr, "failed to map enhancement buffer\n");
gpu.get_enhancement_bufer = NULL;
}
else {
egpu.enhancement_buf_ptr += 4096 / 2;
gpu.get_enhancement_bufer = get_enhancement_bufer;
}
}
int renderer_init(void)
{
if (gpu.vram != NULL) {
initialize_psx_gpu(&egpu, gpu.vram);
initialized = 1;
}
if (gpu.mmap != NULL && egpu.enhancement_buf_ptr == NULL)
map_enhancement_buffer();
ex_regs = gpu.ex_regs;
return 0;
}
void renderer_finish(void)
{
if (egpu.enhancement_buf_ptr != NULL) {
egpu.enhancement_buf_ptr -= 4096 / 2;
gpu.munmap(egpu.enhancement_buf_ptr, ENHANCEMENT_BUF_SIZE);
}
egpu.enhancement_buf_ptr = NULL;
egpu.enhancement_current_buf_ptr = NULL;
initialized = 0;
}
static __attribute__((noinline)) void
sync_enhancement_buffers(int x, int y, int w, int h)
{
const int step_x = 1024 / sizeof(egpu.enhancement_buf_by_x16);
u16 *src, *dst;
int w1, fb_index;
w += x & (step_x - 1);
x &= ~(step_x - 1);
w = (w + step_x - 1) & ~(step_x - 1);
if (y + h > 512)
h = 512 - y;
while (w > 0) {
fb_index = egpu.enhancement_buf_by_x16[x / step_x];
for (w1 = 0; w > 0; w1++, w -= step_x)
if (fb_index != egpu.enhancement_buf_by_x16[x / step_x + w1])
break;
src = gpu.vram + y * 1024 + x;
dst = select_enhancement_buf_ptr(&egpu, x);
dst += (y * 1024 + x) * 2;
scale2x_tiles8(dst, src, w1 * step_x / 8, h);
x += w1 * step_x;
}
}
void renderer_sync_ecmds(uint32_t *ecmds)
{
gpu_parse(&egpu, ecmds + 1, 6 * 4, NULL);
}
void renderer_update_caches(int x, int y, int w, int h)
{
update_texture_cache_region(&egpu, x, y, x + w - 1, y + h - 1);
if (gpu.state.enhancement_active && !gpu.status.rgb24)
sync_enhancement_buffers(x, y, w, h);
}
void renderer_flush_queues(void)
{
flush_render_block_buffer(&egpu);
}
void renderer_set_interlace(int enable, int is_odd)
{
egpu.render_mode &= ~(RENDER_INTERLACE_ENABLED|RENDER_INTERLACE_ODD);
if (enable)
egpu.render_mode |= RENDER_INTERLACE_ENABLED;
if (is_odd)
egpu.render_mode |= RENDER_INTERLACE_ODD;
}
void renderer_notify_res_change(void)
{
// note: must keep it multiple of 8
if (egpu.enhancement_x_threshold != gpu.screen.hres)
{
egpu.enhancement_x_threshold = gpu.screen.hres;
update_enhancement_buf_table_from_hres(&egpu);
}
}
#include "../../frontend/plugin_lib.h"
void renderer_set_config(const struct rearmed_cbs *cbs)
{
static int enhancement_was_on;
disable_main_render = cbs->gpu_neon.enhancement_no_main;
if (egpu.enhancement_buf_ptr != NULL && cbs->gpu_neon.enhancement_enable
&& !enhancement_was_on)
{
sync_enhancement_buffers(0, 0, 1024, 512);
}
enhancement_was_on = cbs->gpu_neon.enhancement_enable;
if (!initialized) {
initialize_psx_gpu(&egpu, gpu.vram);
initialized = 1;
}
if (gpu.mmap != NULL && egpu.enhancement_buf_ptr == NULL)
map_enhancement_buffer();
if (cbs->pl_set_gpu_caps)
cbs->pl_set_gpu_caps(GPU_CAP_SUPPORTS_2X);
egpu.use_dithering = cbs->gpu_neon.allow_dithering;
if(!egpu.use_dithering) {
egpu.dither_table[0] = dither_table_row(0, 0, 0, 0);
egpu.dither_table[1] = dither_table_row(0, 0, 0, 0);
egpu.dither_table[2] = dither_table_row(0, 0, 0, 0);
egpu.dither_table[3] = dither_table_row(0, 0, 0, 0);
} else {
egpu.dither_table[0] = dither_table_row(-4, 0, -3, 1);
egpu.dither_table[1] = dither_table_row(2, -2, 3, -1);
egpu.dither_table[2] = dither_table_row(-3, 1, -4, 0);
egpu.dither_table[3] = dither_table_row(3, -1, 2, -2);
}
}
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