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https://github.com/dingusdev/dingusppc.git
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control: implement HW cursor rendering.
This commit is contained in:
Maxim Poliakovski
parent
a68afbf79a
commit
5f06be6226
@ -394,7 +394,7 @@ void ControlVideo::enable_display()
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this->active_height = new_height;
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// set framebuffer parameters
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this->fb_ptr = &this->vram_ptr[this->fb_base];
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this->fb_ptr = &this->vram_ptr[this->fb_base];
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this->fb_pitch = this->row_words;
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// get pixel depth from RaDACal
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@ -463,48 +463,70 @@ void ControlVideo::disable_display()
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LOG_F(INFO, "Control: display disabled");
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}
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void ControlVideo::measure_hw_cursor() {
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uint8_t *src_fw_ptr = &this->vram_ptr[this->fb_base];
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uint8_t *src_bw_ptr = &this->vram_ptr[this->fb_base +
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this->fb_pitch * (this->active_height - 1)];
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int cur_pos_y_start = -1;
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int cur_pos_y_end = -1;
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// forward scanning to find the first line of the cursor
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for (int h = 0; h < this->active_height; h++, src_fw_ptr += this->fb_pitch) {
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if (((uint64_t *)src_fw_ptr)[0] | ((uint64_t *)src_fw_ptr)[1]) {
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cur_pos_y_start = h;
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break;
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}
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}
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if (cur_pos_y_start < 0)
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return; // bail out because no cursor data start was found
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// backward scanning to find the last line of the cursor
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for (int h = this->active_height - 1; h >= 0; h--, src_bw_ptr -= this->fb_pitch) {
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if (((uint64_t *)src_bw_ptr)[0] | ((uint64_t *)src_bw_ptr)[1]) {
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cur_pos_y_end = h;
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break;
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}
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}
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if (cur_pos_y_end < 0)
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return; // bail out because no cursor data end was found
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this->rad_cursor_height = cur_pos_y_end - cur_pos_y_start + 1;
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this->rad_cur_ypos = cur_pos_y_start;
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}
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void ControlVideo::draw_hw_cursor(uint8_t *dst_buf, int dst_pitch) {
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uint8_t *src_row = &this->vram_ptr[this->fb_base];
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uint8_t *dst_row = dst_buf;
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int cur_height = this->active_height;
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dst_pitch -= 32 * 4;
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int src_pitch = this->fb_pitch - 16;
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uint32_t color[16];
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for (int c = 0; c < 16; c++) {
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color[c] = (this->cursor_data[c*3] << 16) | (this->cursor_data[c*3 + 1] << 8) | (this->cursor_data[c*3 + 2]);
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}
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this->measure_hw_cursor();
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for (int h = 0; h < cur_height; h++) {
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for (int x = 0; x < 2; x++) {
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uint64_t px16 = READ_QWORD_BE_A(src_row);
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for (int p = 0; p < 16; p++) {
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int c = px16 >> 60;
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switch (c) {
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case 0:
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// transparent
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break;
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case 1:
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// 1's complement
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WRITE_DWORD_LE_A(dst_row, READ_DWORD_LE_A(dst_row) ^ 0xffffff);
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break;
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case 8:
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WRITE_DWORD_LE_A(dst_row, color[0]);
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break;
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case 9:
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WRITE_DWORD_LE_A(dst_row, color[1]);
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break;
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default:
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WRITE_DWORD_LE_A(dst_row, (c << 16) | (c << 8) | c);
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break;
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}
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px16 <<= 4;
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dst_row += 4;
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if (this->rad_cur_rgn_pos >= this->active_width)
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return;
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src_row += this->fb_pitch * this->rad_cur_ypos;
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dst_row += this->rad_cur_ypos * dst_pitch + this->rad_cur_rgn_pos * sizeof(uint32_t);
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dst_pitch -= 32 * sizeof(uint32_t);
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for (int h = 0; h < this->rad_cursor_height; h++) {
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for (int x = 0; x < 2; x++) { // two sets of 16 pixels
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uint64_t pix_data = READ_QWORD_BE_A(src_row + x * 8);
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if (!pix_data) { // skip processing of 16 transparent pixels
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dst_row += 16 * sizeof(uint32_t);
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break;
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}
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for (int p = 0; p < 16; p++) {
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uint8_t pix = pix_data >> 60; // each pixel is 4 bits wide
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if (pix & 8) { // check control bit: 0 - transparent, 1 - opaque
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WRITE_DWORD_LE_A(dst_row, this->cursor_clut[pix & 7]);
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}
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pix_data <<= 4;
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dst_row += sizeof(uint32_t);
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}
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src_row += 8;
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}
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src_row += this->fb_pitch;
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dst_row += dst_pitch;
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src_row += src_pitch;
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}
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}
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@ -544,26 +566,44 @@ void ControlVideo::iodev_write(uint32_t address, uint16_t value)
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this->rad_addr = value;
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this->comp_index = 0;
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break;
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case RadacalRegs::CURSOR_DATA:
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this->cursor_data[(this->rad_addr++) % 24] = value;
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case RadacalRegs::CURSOR_CLUT:
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this->clut_color[this->comp_index++] = value;
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if (this->comp_index >= 3) {
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this->cursor_clut[this->rad_addr & 7] = (this->clut_color[0] << 16) |
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(this->clut_color[1] << 8) | this->clut_color[2];
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this->rad_addr++; // auto-increment CLUT address
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this->comp_index = 0;
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}
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break;
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case RadacalRegs::MULTI:
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switch (this->rad_addr) {
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case RadacalRegs::CURSOR_POS_HI:
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this->rad_cur_pos = (value << 8) | (this->rad_cur_pos & 0x00ff);
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this->rad_cur_rgn_pos = (value << 8) | this->rad_cur_pos_lo;
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break;
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case RadacalRegs::CURSOR_POS_LO:
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this->rad_cur_pos = (this->rad_cur_pos & 0xff00) | (value & 0x00ff);
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this->rad_cur_pos_lo = value;
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break;
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case RadacalRegs::MISC_CTRL:
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if (bit_changed(this->rad_cr, value, 1)) {
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if (value & 2) {
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//LOG_F(WARNING, "RaDACal: HW cursor enabled!");
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this->measure_hw_cursor();
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this->cursor_ovl_cb = [this](uint8_t *dst_buf, int dst_pitch) {
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this->draw_hw_cursor(dst_buf, dst_pitch);
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};
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} else {
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//LOG_F(WARNING, "RaDACal: HW cursor disabled!");
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this->cursor_ovl_cb = nullptr;
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}
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}
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this->rad_cr = value;
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break;
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case RadacalRegs::DBL_BUF_CTRL:
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this->rad_dbl_buf_cr = value;
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break;
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case RadacalRegs::TEST_CTRL:
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this->tst_cr = value;
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if (this->tst_cr & 1)
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this->rad_tst_cr = value;
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if (value & 1)
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LOG_F(WARNING, "RaDACal: DAC test enabled!");
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break;
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default:
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@ -94,7 +94,7 @@ namespace RadacalRegs {
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enum RadacalRegs : uint8_t {
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ADDRESS = 0, // address register
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CURSOR_DATA = 1, // cursor data
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CURSOR_CLUT = 1, // cursor palette data
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MULTI = 2, // multipurpose section
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CLUT_DATA = 3, // color palette data
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@ -134,7 +134,8 @@ protected:
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uint16_t iodev_read(uint32_t address);
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void iodev_write(uint32_t address, uint16_t value);
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// HW cursor support
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// HW cursor support (in RaDACal)
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void measure_hw_cursor();
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void draw_hw_cursor(uint8_t *dst_buf, int dst_pitch);
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private:
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@ -166,11 +167,14 @@ private:
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uint8_t rad_addr = 0;
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uint8_t rad_cr = 0;
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uint8_t rad_dbl_buf_cr = 0;
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uint8_t tst_cr = 0;
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uint16_t rad_cur_pos = 0;
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uint8_t rad_tst_cr = 0;
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uint16_t rad_cur_rgn_pos = 0; // horizontal position of the cursor region
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uint8_t rad_cur_pos_lo = 0; // lower byte of the horizontal cursor position
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uint16_t rad_cur_ypos = 0;
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uint16_t rad_cursor_height = 0;
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uint8_t comp_index;
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uint8_t clut_color[3];
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uint8_t cursor_data[24] = { 0 };
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uint32_t cursor_clut[8] = {};
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};
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#endif // CONTROL_VIDEO_H
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