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DOS: vga palette looks ok now

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This commit is contained in:
Brad Parker 2017-01-22 10:41:01 -05:00
parent 5c83e993ba
commit 9d3c20929a
2 changed files with 15 additions and 16 deletions
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28
gfx/drivers/vga_gfx.c
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@ -41,11 +41,6 @@ static unsigned vga_video_pitch = 0;
static unsigned vga_video_bits = 0;
static bool vga_rgb32 = false;
static float lerp(float x, float y, float a, float b, float d)
{
return a + (b - a) * ((d - x) / (y - x));
}
static void vga_set_mode_13h()
{
__dpmi_regs r;
@ -74,23 +69,23 @@ static void vga_upload_palette()
/* RGB332 */
for (i = 0; i < 256; i++)
{
outp(0x03c9, i * r * (63.0f / 255.0f));
outp(0x03c9, i * g * (63.0f / 255.0f));
outp(0x03c9, i * b * (63.0f / 255.0f));
r++;
if (i % 64 == 0)
if (i > 0 && i % 64 == 0)
{
r = 0;
g = 0;
b++;
}
else if (i % 8 == 0)
else if (i > 0 && i % 8 == 0)
{
r = 0;
g++;
}
outp(0x03c9, r * (63.0f / 7.0f));
outp(0x03c9, g * (63.0f / 7.0f));
outp(0x03c9, b * (63.0f / 3.0f));
r++;
}
}
@ -156,6 +151,7 @@ static bool vga_gfx_frame(void *data, const void *frame,
(void)frame_height;
(void)pitch;
(void)msg;
(void)bits;
if (!frame || !frame_width || !frame_height)
return true;
@ -326,9 +322,9 @@ static void vga_set_texture_frame(void *data,
for(x = 0; x < VGA_WIDTH; x++)
{
unsigned short pixel = video_frame[width * y + x];
unsigned r = (7.0f / 15.0f) * ((pixel & 0xF) >> 0);
unsigned g = (7.0f / 15.0f) * ((pixel & 0xF0) >> 4);
unsigned b = (3.0f / 15.0f) * ((pixel & 0xF00) >> 8);
unsigned r = (7.0f / 15.0f) * ((pixel & 0xF0) >> 4);
unsigned g = (7.0f / 15.0f) * ((pixel & 0xF00) >> 8);
unsigned b = (3.0f / 15.0f) * ((pixel & 0xF000) >> 12);
vga_menu_frame[VGA_WIDTH * y + x] = (b << 6) | (g << 3) | r;
}
}

3
gfx/drivers_font/vga_font.c
View File

@ -83,6 +83,9 @@ static void vga_render_msg(video_frame_info_t *video_info,
vga_raster_t *font = (vga_raster_t*)data;
const struct font_params *params = (const struct font_params*)userdata;
(void)newX;
(void)newY;
if (!font || string_is_empty(msg))
return;