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monocolor mode for LORES

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This commit is contained in:
Aaron Culliney 2018-03-11 16:58:42 -07:00
parent 3c04e12db0
commit 1de71d1ff4
1 changed files with 36 additions and 4 deletions
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40
src/display.c
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@ -632,6 +632,7 @@ static inline void __plot_character40(const unsigned int font_off, uint8_t *fb_p
}
static void _plot_character40(uint8_t col, uint8_t row, int page, int bank, uint8_t *fb_ptr) {
assert(bank == 0); // FIXME TODO ...
uint16_t base = page ? 0x0800 : 0x0400;
uint16_t off = video__line_offset[row] + col;
uint16_t ea = base+off;
@ -655,6 +656,7 @@ static inline void __plot_character80(const unsigned int font_off, uint8_t *fb_p
}
static void _plot_character80(uint8_t col, uint8_t row, int page, int bank, uint8_t *fb_ptr) {
assert(bank == 0); // FIXME TODO ...
uint16_t base = page ? 0x0800 : 0x0400;
uint16_t off = video__line_offset[row] + col;
uint16_t ea = base+off;
@ -674,9 +676,23 @@ static void _plot_character80(uint8_t col, uint8_t row, int page, int bank, uint
}
}
static inline void __plot_block40(const uint8_t val, uint8_t *fb_ptr) {
static inline void __plot_block40(const uint8_t val, uint8_t col, uint8_t *fb_ptr) {
uint8_t color = (val & 0x0F) << 4;
uint32_t val32 = (color << 24) | (color << 16) | (color << 8) | color;
uint32_t val32;
if (color_mode == COLOR_NONE) {
if (color != 0x0 && color != 0xf) {
uint8_t rot2 = ((col % 2) << 1); // 2 phases at double rotation
color = (color << rot2) | ((color & 0xC0) >> rot2);
}
val32 = ((color & 0x10) ? COLOR_LIGHT_WHITE : COLOR_BLACK) << 0;
val32 |= ((color & 0x20) ? COLOR_LIGHT_WHITE : COLOR_BLACK) << 8;
val32 |= ((color & 0x40) ? COLOR_LIGHT_WHITE : COLOR_BLACK) << 16;
val32 |= ((color & 0x80) ? COLOR_LIGHT_WHITE : COLOR_BLACK) << 24;
} else {
val32 = (color << 24) | (color << 16) | (color << 8) | color;
}
_plot_lores40(/*dst*/&fb_ptr, val32);
fb_ptr += SCANSTEP;
@ -688,7 +704,19 @@ static inline void __plot_block40(const uint8_t val, uint8_t *fb_ptr) {
fb_ptr += SCANSTEP;
color = val & 0xF0;
val32 = (color << 24) | (color << 16) | (color << 8) | color;
if (color_mode == COLOR_NONE) {
if (color != 0x0 && color != 0xf) {
uint8_t rot2 = ((col % 2) << 1); // 2 phases at double rotation
color = (color << rot2) | ((color & 0xC0) >> rot2);
}
val32 = ((color & 0x10) ? COLOR_LIGHT_WHITE : COLOR_BLACK) << 0;
val32 |= ((color & 0x20) ? COLOR_LIGHT_WHITE : COLOR_BLACK) << 8;
val32 |= ((color & 0x40) ? COLOR_LIGHT_WHITE : COLOR_BLACK) << 16;
val32 |= ((color & 0x80) ? COLOR_LIGHT_WHITE : COLOR_BLACK) << 24;
} else {
val32 = (color << 24) | (color << 16) | (color << 8) | color;
}
_plot_lores40(/*dst*/&fb_ptr, val32);
fb_ptr += SCANSTEP;
@ -700,11 +728,12 @@ static inline void __plot_block40(const uint8_t val, uint8_t *fb_ptr) {
}
static void _plot_block40(uint8_t col, uint8_t row, int page, int bank, uint8_t *fb_ptr) {
assert(bank == 0); // FIXME TODO ...
uint16_t base = page ? 0x0800 : 0x0400;
uint16_t off = video__line_offset[row] + col;
uint16_t ea = base+off;
uint8_t b = apple_ii_64k[bank][ea];
__plot_block40(b, fb_ptr+video__screen_addresses[off]);
__plot_block40(b, col, fb_ptr+video__screen_addresses[off]);
if (textCallbackFn) {
textCallbackFn((pixel_delta_t){ .row = row, .col = col, .b = b, .cs = COLOR16 });
}
@ -748,6 +777,7 @@ static inline uint8_t __shift_block80(uint8_t b) {
}
static void _plot_block80(uint8_t col, uint8_t row, int page, int bank, uint8_t *fb_ptr) {
assert(bank == 0); // FIXME TODO ...
uint16_t base = page ? 0x0800 : 0x0400;
uint16_t off = video__line_offset[row] + col;
uint16_t ea = base+off;
@ -1034,6 +1064,7 @@ static inline void __plot_hires80(uint16_t base, uint16_t ea, uint8_t *fb_ptr) {
}
static void _plot_hires80(uint16_t off, int page, int bank, bool is_even, uint8_t *fb_ptr) {
assert(bank == 0); // FIXME TODO ...
uint16_t base = page ? 0x4000 : 0x2000;
uint16_t ea = base+off;
__plot_hires80(base, ea, fb_ptr);
@ -1084,6 +1115,7 @@ static inline void _plot_hires_pixels(uint8_t *dst, const uint8_t *src) {
}
static void _plot_hires40(uint16_t off, int page, int bank, bool is_even, uint8_t *fb_ptr) {
assert(bank == 0); // FIXME TODO ...
uint16_t base = page ? 0x4000 : 0x2000;
uint16_t ea = base+off;
uint8_t b = apple_ii_64k[bank][ea];