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vdp2: working rbg0_font example

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Zack Buhman 2025-08-08 17:35:25 -05:00
parent 9f758e75f0
commit 6e28a7d147
1 changed files with 37 additions and 4 deletions
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41
vdp2/rbg0_font.cpp
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@ -73,24 +73,57 @@ void main()
vdp2.reg.MPOFR = MPOFR__RAMP(0); // bits 8~6 vdp2.reg.MPOFR = MPOFR__RAMP(0); // bits 8~6
vdp2.reg.MPABRA = MPABRA__RAMPB(plane_a) | MPABRA__RAMPA(plane_a); // bits 5~0 vdp2.reg.MPABRA = MPABRA__RAMPB(plane_a) | MPABRA__RAMPA(plane_a); // bits 5~0
vdp2.reg.MPCDRA = MPCDRA__RAMPD(plane_a) | MPCDRA__RAMPC(plane_a); // bits 5~0 vdp2.reg.MPCDRA = MPCDRA__RAMPD(plane_a) | MPCDRA__RAMPC(plane_a); // bits 5~0
vdp2.reg.MPEFRA = MPEFRA__RAMPF(plane_a) | MPEFRA__RAMPE(plane_a); // bits 5~0
vdp2.reg.MPGHRA = MPGHRA__RAMPH(plane_a) | MPGHRA__RAMPG(plane_a); // bits 5~0
vdp2.reg.MPIJRA = MPIJRA__RAMPJ(plane_a) | MPIJRA__RAMPI(plane_a); // bits 5~0
vdp2.reg.MPKLRA = MPKLRA__RAMPL(plane_a) | MPKLRA__RAMPK(plane_a); // bits 5~0
vdp2.reg.MPMNRA = MPMNRA__RAMPN(plane_a) | MPMNRA__RAMPM(plane_a); // bits 5~0
vdp2.reg.MPOPRA = MPOPRA__RAMPP(plane_a) | MPOPRA__RAMPO(plane_a); // bits 5~0
vdp2.reg.PNCR = PNCR__R0PNB__2WORD; vdp2.reg.PNCR = PNCR__R0PNB__2WORD;
vdp2.reg.RPMD = RPMD__ROTATION_PARAMETER_A; vdp2.reg.RPMD = RPMD__ROTATION_PARAMETER_A;
vdp2.reg.RPRCTL = 0; //vdp2.reg.RPRCTL = 0;
vdp2.reg.KTCTL = 0; vdp2.reg.KTCTL = 0;
vdp2.reg.KTAOF = 0; vdp2.reg.KTAOF = 0;
vdp2.reg.RPTA = 0; vdp2.reg.PRIR = 3;
/* */
palette_data(); palette_data();
cell_data(); cell_data();
volatile struct vdp2_rotation_parameter_table * table = (struct vdp2_rotation_parameter_table *)&vdp2.vram.u32[0x4000 / 4];
table->screen_start_coordinate_xst = 0;
table->screen_start_coordinate_yst = 0;
table->screen_start_coordinate_zst = 0;
table->screen_vertical_coordinate_increment_dxst = 0;
table->screen_vertical_coordinate_increment_dyst = (1 << 16);
table->screen_horizontal_coordinate_increment_dx = (1 << 16);
table->screen_horizontal_coordinate_increment_dy = 0;
table->rotation_matrix_parameter_a = (-1 << 16);
table->rotation_matrix_parameter_b = 0;
table->rotation_matrix_parameter_c = 0;
table->rotation_matrix_parameter_d = 0;
table->rotation_matrix_parameter_e = (1 << 16);
table->rotation_matrix_parameter_f = 0;
table->viewpoint_coordinate_px = 0;
table->viewpoint_coordinate_py = 0;
table->viewpoint_coordinate_pz = 0;
table->center_point_coordinate_px = 0;
table->center_point_coordinate_py = 0;
table->center_point_coordinate_pz = 0;
table->horizontal_shift_mx = 0;
table->horizontal_shift_my = 0;
table->scaling_coefficient_kx = (1 << 16);
table->scaling_coefficient_ky = (1 << 16);
vdp2.reg.RPTA = (((uint32_t)table) >> 1) & 0x7ffff;
/* */
for (int i = 0; i < 64 * 64; i++) { for (int i = 0; i < 64 * 64; i++) {
vdp2.vram.u32[(plane_a_offset / 4) + i] = ' ' - 0x20; vdp2.vram.u32[(plane_a_offset / 4) + i] = ' ' - 0x20;
} }