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sdl, complete overhaul of hardware/software scaling

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This commit is contained in:
kub 2021-09-10 18:46:05 +02:00
parent 6651998e9f
commit d5d1778252
21 changed files with 1233 additions and 547 deletions
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35
platform/libretro/libretro.c
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@ -84,7 +84,6 @@ static retro_environment_t environ_cb;
static retro_audio_sample_batch_t audio_batch_cb;
#define VOUT_MAX_WIDTH 320
#define VOUT_32COL_WIDTH 256
#define VOUT_MAX_HEIGHT 240
#define INITIAL_SND_RATE 44100
@ -99,7 +98,8 @@ static bool old_show_overscan = false;
/* Required to allow on the fly changes to 'show overscan' */
static int vm_current_start_line = -1;
static int vm_current_line_count = -1;
static int vm_current_is_32cols = -1;
static int vm_current_start_col = -1;
static int vm_current_col_count = -1;
static int vout_16bit = 1;
static int vout_format = PDF_RGB555;
@ -615,13 +615,14 @@ int plat_mem_set_exec(void *ptr, size_t size)
return ret;
}
void emu_video_mode_change(int start_line, int line_count, int is_32cols)
void emu_video_mode_change(int start_line, int line_count, int start_col, int col_count)
{
struct retro_system_av_info av_info;
vm_current_start_line = start_line;
vm_current_line_count = line_count;
vm_current_is_32cols = is_32cols;
vm_current_start_col = start_col;
vm_current_col_count = col_count;
// 8bit renderes create a 328x256 CLUT image, while 16bit creates 320x240 RGB
vout_16bit = vout_format == PDF_RGB555 || (PicoIn.AHW & PAHW_32X);
@ -631,13 +632,7 @@ void emu_video_mode_change(int start_line, int line_count, int is_32cols)
vout_width = (vout_16bit ? VOUT_MAX_WIDTH : VOUT_8BIT_WIDTH);
vout_height = (vout_16bit ? VOUT_MAX_HEIGHT : VOUT_8BIT_HEIGHT);
vout_offset = (vout_16bit ? 0 : 8); // 8bit has 8 px overlap area on the left
if (is_32cols) {
// 256x240, with or w/o overlap on the left and 64 px on the right
padding = (struct retro_hw_ps2_insets){start_line, vout_offset, vout_height - line_count - start_line, vout_width - 256.0f - vout_offset};
} else {
// 320x240, with or w/o overlap on the left and none on the right
padding = (struct retro_hw_ps2_insets){start_line, vout_offset, vout_height - line_count - start_line, vout_width - 320.0f - vout_offset};
}
padding = (struct retro_hw_ps2_insets){start_line, vout_offset, vout_height - line_count - start_line, vout_width - col_count - vout_offset};
int pxsz = (vout_16bit ? 2 : 1); // pixel size: RGB = 16 bits, CLUT = 8 bits
memset(vout_buf, 0, pxsz * vout_width * vout_height);
@ -651,7 +646,7 @@ void emu_video_mode_change(int start_line, int line_count, int is_32cols)
ps2->padding = padding;
}
#else
vout_width = is_32cols ? VOUT_32COL_WIDTH : VOUT_MAX_WIDTH;
vout_width = col_count;
memset(vout_buf, 0, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
if (vout_16bit)
PicoDrawSetOutBuf(vout_buf, vout_width * 2);
@ -686,11 +681,11 @@ void emu_32x_startup(void)
PicoDrawSetOutFormat(vout_format, 0);
if ((vm_current_start_line != -1) &&
(vm_current_line_count != -1) &&
(vm_current_is_32cols != -1))
(vm_current_start_col != -1) &&
(vm_current_col_count != -1))
emu_video_mode_change(
vm_current_start_line,
vm_current_line_count,
vm_current_is_32cols);
vm_current_start_line, vm_current_line_count,
vm_current_start_col, vm_current_col_count);
}
void lprintf(const char *fmt, ...)
@ -1621,11 +1616,11 @@ static void update_variables(bool first_run)
{
if ((vm_current_start_line != -1) &&
(vm_current_line_count != -1) &&
(vm_current_is_32cols != -1))
(vm_current_start_col != -1) &&
(vm_current_col_count != -1))
emu_video_mode_change(
vm_current_start_line,
vm_current_line_count,
vm_current_is_32cols);
vm_current_start_line, vm_current_line_count,
vm_current_start_col, vm_current_col_count);
}
/* Reinitialise frameskipping, if required */