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Attempt to copy and paste my way to working type-1 sprites.

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This commit is contained in:
Thomas Harte 2023-02-16 22:46:19 -05:00
parent 023da1970a
commit c140f370fe
3 changed files with 93 additions and 32 deletions
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30
Components/9918/Implementation/9918.cpp
View File

@ -212,19 +212,23 @@ void TMS9918<personality>::run_for(const HalfCycles cycles) {
// ------------------------
// Perform memory accesses.
// ------------------------
#define fetch(function, clock, offset) { \
const int first_window = from_internal<personality, clock>(this->fetch_pointer_.column); \
const int final_window = from_internal<personality, clock>(end_column); \
if(first_window == final_window) break; \
if(final_window != clock_rate<personality, clock>()) { \
function<true>( \
this->line_buffers_[this->fetch_pointer_.row], this->fetch_pointer_.row + offset, \
first_window, final_window); \
} else { \
function<false>( \
this->line_buffers_[this->fetch_pointer_.row], this->fetch_pointer_.row + offset, \
first_window, final_window); \
} \
#define fetch(function, clock, offset) { \
const int first_window = from_internal<personality, clock>(this->fetch_pointer_.column); \
const int final_window = from_internal<personality, clock>(end_column); \
if(first_window == final_window) break; \
if(final_window != clock_rate<personality, clock>()) { \
function<true>( \
this->line_buffers_[this->fetch_pointer_.row], \
this->line_buffers_[(this->fetch_pointer_.row + 1) % this->mode_timing_.total_lines], \
this->fetch_pointer_.row + offset, \
first_window, final_window); \
} else { \
function<false>( \
this->line_buffers_[this->fetch_pointer_.row], \
this->line_buffers_[(this->fetch_pointer_.row + 1) % this->mode_timing_.total_lines], \
this->fetch_pointer_.row + offset, \
first_window, final_window); \
} \
}
switch(line_buffer.fetch_mode) {

12
Components/9918/Implementation/9918Base.hpp
View File

@ -508,14 +508,14 @@ template <Personality personality> struct Base: public Storage<personality> {
template<bool use_end, typename Fetcher> void dispatch(Fetcher &fetcher, int start, int end);
// Various fetchers.
template<bool use_end> void fetch_tms_refresh(LineBuffer &, int y, int start, int end);
template<bool use_end> void fetch_tms_text(LineBuffer &, int y, int start, int end);
template<bool use_end> void fetch_tms_character(LineBuffer &, int y, int start, int end);
template<bool use_end> void fetch_tms_refresh(LineBuffer &, LineBuffer &, int y, int start, int end);
template<bool use_end> void fetch_tms_text(LineBuffer &, LineBuffer &, int y, int start, int end);
template<bool use_end> void fetch_tms_character(LineBuffer &, LineBuffer &, int y, int start, int end);
template<bool use_end> void fetch_yamaha(LineBuffer &, int y, int start, int end);
template<ScreenMode> void fetch_yamaha(LineBuffer &, int y, int end);
template<bool use_end> void fetch_yamaha(LineBuffer &, LineBuffer &, int y, int start, int end);
template<ScreenMode> void fetch_yamaha(LineBuffer &, LineBuffer &, int y, int end);
template<bool use_end> void fetch_sms(LineBuffer &, int y, int start, int end);
template<bool use_end> void fetch_sms(LineBuffer &, LineBuffer &, int y, int start, int end);
// A helper function to output the current border colour for
// the number of cycles supplied.

83
Components/9918/Implementation/Fetch.hpp
View File

@ -140,10 +140,10 @@ struct CharacterFetcher {
if(buffer.screen_mode == ScreenMode::Graphics) {
// If this is high resolution mode, allow the row number to affect the pattern and colour addresses.
pattern_base &= size_t(0x2000 | ((y & 0xc0) << 5));
colour_base &= size_t(0x2000 | ((y & 0xc0) << 5));
pattern_base &= AddressT(0x2000 | ((y & 0xc0) << 5));
colour_base &= AddressT(0x2000 | ((y & 0xc0) << 5));
colour_base += size_t(y & 7);
colour_base += AddressT(y & 7);
colour_name_shift = 0;
} else {
colour_base &= size_t(0xffc0);
@ -241,7 +241,7 @@ struct CharacterFetcher {
}
void posit_sprite(int sprite) {
base->posit_sprite(sprite_selection_buffer, sprite, base->ram_[base->sprite_attribute_table_address_ & AddressT((sprite << 2) | 0x3f80)], y);
base->posit_sprite(sprite_selection_buffer, sprite, base->ram_[base->sprite_attribute_table_address_ & AddressT((sprite << 2) | 0x3f80)], y);
}
Base<personality> *const base;
@ -257,20 +257,20 @@ struct CharacterFetcher {
// MARK: - TMS fetch routines.
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_tms_refresh(LineBuffer &, int, int start, int end) {
template<bool use_end> void Base<personality>::fetch_tms_refresh(LineBuffer &, LineBuffer &, int, int start, int end) {
RefreshFetcher refresher(this);
dispatch<use_end>(refresher, start, end);
}
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_tms_text(LineBuffer &line_buffer, int y, int start, int end) {
template<bool use_end> void Base<personality>::fetch_tms_text(LineBuffer &line_buffer, LineBuffer &, int y, int start, int end) {
TextFetcher fetcher(this, line_buffer, y);
dispatch<use_end>(fetcher, start, end);
}
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_tms_character(LineBuffer &line_buffer, int y, int start, int end) {
CharacterFetcher fetcher(this, line_buffer, line_buffers_[(y + 1) % mode_timing_.total_lines], y);
template<bool use_end> void Base<personality>::fetch_tms_character(LineBuffer &line_buffer, LineBuffer &next_line_buffer, int y, int start, int end) {
CharacterFetcher fetcher(this, line_buffer, next_line_buffer, y);
dispatch<use_end>(fetcher, start, end);
}
@ -414,9 +414,9 @@ struct SMSFetcher {
};
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_sms(LineBuffer &line_buffer, int y, int start, int end) {
template<bool use_end> void Base<personality>::fetch_sms(LineBuffer &line_buffer, LineBuffer &next_line_buffer, int y, int start, int end) {
if constexpr (is_sega_vdp(personality)) {
SMSFetcher fetcher(this, line_buffer, line_buffers_[(y + 1) % mode_timing_.total_lines], y);
SMSFetcher fetcher(this, line_buffer, next_line_buffer, y);
dispatch<use_end>(fetcher, start, end);
}
}
@ -424,7 +424,7 @@ template<bool use_end> void Base<personality>::fetch_sms(LineBuffer &line_buffer
// MARK: - Yamaha
template <Personality personality>
template<ScreenMode mode> void Base<personality>::fetch_yamaha(LineBuffer &line_buffer, int y, int end) {
template<ScreenMode mode> void Base<personality>::fetch_yamaha(LineBuffer &line_buffer, LineBuffer &next_line_buffer, int y, int end) {
const AddressT rotated_name_ = pattern_name_address_ >> 1;
const uint8_t *const ram2 = &ram_[65536];
@ -455,6 +455,11 @@ template<ScreenMode mode> void Base<personality>::fetch_yamaha(LineBuffer &line_
name_[3] = ram_[start + column + 3];
} break;
case ScreenMode::Graphics: {
const auto row_base = pattern_name_address_ & (AddressT((y << 2)&~31) | 0x1fc00);
tile_offset_ = ram_[(row_base + Storage<personality>::next_event_->id) & 0x1ffff];
} break;
default: break;
}
break;
@ -467,6 +472,12 @@ template<ScreenMode mode> void Base<personality>::fetch_yamaha(LineBuffer &line_
line_buffer.characters.flags[column] = ram_[address + column];
} break;
case ScreenMode::Graphics: {
const auto colour_base = (colour_table_address_ & (0x2000 | ((y & 0xc0) << 5))) + (y & 7);
line_buffer.tiles.patterns[Storage<personality>::next_event_->id][1] =
ram_[colour_base + AddressT((tile_offset_ << 3)) & 0x1ffff];
} break;
default: break;
}
break;
@ -493,10 +504,56 @@ template<ScreenMode mode> void Base<personality>::fetch_yamaha(LineBuffer &line_
line_buffer.characters.shapes[column + 3] = ram_[start + AddressT(name_[3] << 3)];
} break;
case ScreenMode::Graphics: {
const auto pattern_base = (pattern_generator_table_address_ & (0x2000 | ((y & 0xc0) << 5))) + (y & 7);
line_buffer.tiles.patterns[Storage<personality>::next_event_->id][0] =
ram_[(pattern_base + AddressT(tile_offset_ << 3)) & 0x1ffff];
} break;
default: break;
}
break;
case Type::SpriteY:
switch(mode) {
default:
posit_sprite(next_line_buffer, Storage<personality>::next_event_->id, ram_[sprite_attribute_table_address_ & AddressT((Storage<personality>::next_event_->id << 2) | 0x1ff80)], y);
if(Storage<personality>::next_event_->id == 31) {
next_line_buffer.reset_sprite_collection();
}
break;
}
break;
case Type::SpriteLocation:
switch(mode) {
default:
line_buffer.active_sprites[Storage<personality>::next_event_->id].x =
ram_[
sprite_attribute_table_address_ & AddressT(0x1ff81 | (line_buffer.active_sprites[Storage<personality>::next_event_->id].index << 2))
];
break;
}
break;
case Type::SpritePattern:
switch(mode) {
default: {
const uint8_t name = ram_[
sprite_attribute_table_address_ & AddressT(0x1ff82 | (line_buffer.active_sprites[Storage<personality>::next_event_->id].index << 2))
] & (sprites_16x16_ ? ~3 : ~0);
line_buffer.active_sprites[Storage<personality>::next_event_->id].image[2] = ram_[
sprite_attribute_table_address_ & AddressT(0x1ff83 | (line_buffer.active_sprites[Storage<personality>::next_event_->id].index << 2))
];
line_buffer.active_sprites[Storage<personality>::next_event_->id].x -= (line_buffer.active_sprites[Storage<personality>::next_event_->id].image[2] & 0x80) >> 2;
const size_t graphic_location = sprite_generator_table_address_ & AddressT(0x1f800 | (name << 3) | line_buffer.active_sprites[Storage<personality>::next_event_->id].row);
line_buffer.active_sprites[Storage<personality>::next_event_->id].image[0] = ram_[graphic_location];
line_buffer.active_sprites[Storage<personality>::next_event_->id].image[1] = ram_[graphic_location+16];
} break;
}
break;
case Type::DataBlock:
// Exactly how to fetch depends upon mode...
switch(mode) {
@ -544,10 +601,10 @@ template<ScreenMode mode> void Base<personality>::fetch_yamaha(LineBuffer &line_
template <Personality personality>
template<bool use_end> void Base<personality>::fetch_yamaha(LineBuffer &line_buffer, int y, int, int end) {
template<bool use_end> void Base<personality>::fetch_yamaha(LineBuffer &line_buffer, LineBuffer &next_line_buffer, int y, int, int end) {
if constexpr (is_yamaha_vdp(personality)) {
// Dispatch according to [supported] screen mode.
#define Dispatch(mode) case mode: fetch_yamaha<mode>(line_buffer, y, end); break;
#define Dispatch(mode) case mode: fetch_yamaha<mode>(line_buffer, next_line_buffer, y, end); break;
switch(line_buffer.screen_mode) {
default: break;
Dispatch(ScreenMode::Blank);