diff options
Diffstat (limited to 'agbx/source/gfx')
| -rw-r--r-- | agbx/source/gfx/clrscrn.c | 24 | ||||
| -rw-r--r-- | agbx/source/gfx/clrscrn.cc | 23 | ||||
| -rw-r--r-- | agbx/source/gfx/plot.c | 29 | ||||
| -rw-r--r-- | agbx/source/gfx/plottex.c | 36 | ||||
| -rw-r--r-- | agbx/source/gfx/plottex.cc | 29 | ||||
| -rw-r--r-- | agbx/source/gfx/rd.c | 24 | ||||
| -rw-r--r-- | agbx/source/gfx/rd.s (renamed from agbx/source/gfx/getpx.s) | 8 | ||||
| -rw-r--r-- | agbx/source/gfx/setpx.c | 31 |
8 files changed, 74 insertions, 130 deletions
diff --git a/agbx/source/gfx/clrscrn.c b/agbx/source/gfx/clrscrn.c deleted file mode 100644 index cd9a7b3..0000000 --- a/agbx/source/gfx/clrscrn.c +++ /dev/null @@ -1,24 +0,0 @@ -/* - Copyright 2022 Gabriel Jensen. - This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. - If a copy of the MPL was not distributed with this file, You can obtain one at <https://mozilla.org/MPL/2.0>. -*/ - -#include <ax/priv.h> - -#include <ax/gfx.h> - -void ax_clrscrn3(ax_i01 const _col) { - ax_i02 const val = (ax_i02)_col | (ax_i02)_col << 0x10u; - for (ax_i02 addr = 0x600'0000u;addr != 0x601'2C00u;addr += 0x4u) {__ax_set20(addr,val);} -} - -void ax_clrscrn4(ax_i02 const _vaddr,ax_i8 const _col) { - ax_i02 const val = (ax_i02)_col | (ax_i02)_col << 0x8u | (ax_i02)_col << 0x10u | (ax_i02)_col << 0x18u; - for (ax_i02 addr = _vaddr;addr != _vaddr + 0x9600u;addr += 0x4u) {__ax_set20(addr,val);} -} - -void ax_clrscrn5(ax_i02 const _vaddr,ax_i01 const _col) { - ax_i02 const val = (ax_i02)_col | (ax_i02)_col << 0x10u; - for (ax_i02 addr = _vaddr;addr != _vaddr + 0xA000u;addr += 0x4u) {__ax_set20(addr,val);} -} diff --git a/agbx/source/gfx/clrscrn.cc b/agbx/source/gfx/clrscrn.cc new file mode 100644 index 0000000..8f27268 --- /dev/null +++ b/agbx/source/gfx/clrscrn.cc @@ -0,0 +1,23 @@ +/* + Copyright 2022 Gabriel Jensen. + This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. + If a copy of the MPL was not distributed with this file, You can obtain one at <https://mozilla.org/MPL/2.0>. +*/ + +#include <ax/priv.h> + +#include <ax/gfx.h> + +template<typename _pxtyp> [[gnu::always_inline]] inline static auto __ax_clrscrn(::ax_i02 const _vaddr,_pxtyp const _col) noexcept -> void { + static_assert(::__ax_typeq<_pxtyp,::ax_i8> || ::__ax_typeq<_pxtyp,::ax_i01>); + ::ax_i02 const val = [&_col] { + if constexpr (::__ax_typeq<_pxtyp,::ax_i01>) { + return (ax_i02)_col | (ax_i02)_col << 0x10u; + } + return (ax_i02)_col | (ax_i02)_col << 0x8u | (ax_i02)_col << 0x10u | (ax_i02)_col << 0x18u; + }(); + for (::ax_i02 addr = _vaddr;addr != _vaddr + 0x9600u;addr += 0x4u) {__ax_set20(addr,val);} +} + +extern "C" auto ax_clrscrn1(::ax_i02 const _vaddr,::ax_i8 const _col) -> void {::__ax_clrscrn(_vaddr,_col);} +extern "C" auto ax_clrscrn2(::ax_i02 const _vaddr,::ax_i01 const _col) -> void {::__ax_clrscrn(_vaddr,_col);} diff --git a/agbx/source/gfx/plot.c b/agbx/source/gfx/plot.c index a100208..066b97e 100644 --- a/agbx/source/gfx/plot.c +++ b/agbx/source/gfx/plot.c @@ -8,17 +8,24 @@ #include <ax/gfx.h> -void ax_plot3(ax_i8 const _x,ax_i8 const _y,ax_i01 const _col) { - ax_i01 const px = _y * 0xF0u + _x; - __ax_setpx2(0x600'0000u,px,_col) +void ax_plot1(ax_i02 const _vaddr,ax_i01 const _px,ax_i8 const _col) { + /* We can only write halfwords to VRAM, so we need to load the adjacent pixel value and combine it into a halfword. */ + bool const odd = _px & 0x1u; + ax_i02 addr = _vaddr + _px - odd; + ax_i01 precol = __ax_get10(addr); + ax_i01 col = _col; + if (odd) { + precol &= 0b11111111u; + col <<= 0x8u; + } + else { + precol &= 0b1111111100000000u; + } + ax_i01 const newcol = precol | col; + __ax_set10(addr,newcol); } -void ax_plot4(ax_i02 const _vaddr,ax_i8 const _x,ax_i8 const _y,ax_i8 const _col) { - ax_i01 const px = _y * 0xF0u + _x; - ax_setpx1(_vaddr,px,_col); -} - -void ax_plot5(ax_i02 const _vaddr,ax_i8 const _x,ax_i8 const _y,ax_i01 const _col) { - ax_i01 const px = _y * 0xA0u + _x; - __ax_setpx2(_vaddr,px,_col) +void ax_plot2(ax_i02 const _vaddr,ax_i01 const _px,ax_i01 const _col) { + ax_i02 const addr = _vaddr + _px; + __ax_set10(addr,_col); } diff --git a/agbx/source/gfx/plottex.c b/agbx/source/gfx/plottex.c deleted file mode 100644 index 2165c52..0000000 --- a/agbx/source/gfx/plottex.c +++ /dev/null @@ -1,36 +0,0 @@ -/* - Copyright 2022 Gabriel Jensen. - This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. - If a copy of the MPL was not distributed with this file, You can obtain one at <https://mozilla.org/MPL/2.0>. -*/ - -#include <ax/priv.h> - -#include <ax/gfx.h> - -void ax_plottex3(ax_i01 const * const _tex,ax_i8 const _x,ax_i8 const _y,ax_i8 const _w,ax_i8 const _h) { - ax_i01 const * texpos = _tex; - for (ax_i8 y = _y;y != _y + _h;++y) { - for (ax_i8 x = _x;x != _x + _w;++x) { - ax_plot3(x,y,*(texpos++)); - } - } -} - -void ax_plottex4(ax_i02 const _vaddr,ax_i8 const * const _tex,ax_i8 const _x,ax_i8 const _y,ax_i8 const _w,ax_i8 const _h) { - ax_i8 const * texpos = _tex; - for (ax_i8 y = _y;y != _y + _h;++y) { - for (ax_i8 x = _x;x != _x + _w;++x) { - ax_plot4(_vaddr,x,y,*(texpos++)); - } - } -} - -void ax_plottex5(ax_i02 const _vaddr,ax_i01 const * const _tex,ax_i8 const _x,ax_i8 const _y,ax_i8 const _w,ax_i8 const _h) { - ax_i01 const * texpos = _tex; - for (ax_i8 y = _y;y != _y + _h;++y) { - for (ax_i8 x = _x;x != _x + _w;++x) { - ax_plot5(_vaddr,x,y,*(texpos++)); - } - } -} diff --git a/agbx/source/gfx/plottex.cc b/agbx/source/gfx/plottex.cc new file mode 100644 index 0000000..836a6ff --- /dev/null +++ b/agbx/source/gfx/plottex.cc @@ -0,0 +1,29 @@ +/* + Copyright 2022 Gabriel Jensen. + This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. + If a copy of the MPL was not distributed with this file, You can obtain one at <https://mozilla.org/MPL/2.0>. +*/ + +#include <ax/priv.h> + +#include <ax/gfx.h> + +template<typename _pxtyp> [[gnu::always_inline]] inline static auto __ax_plottex(::ax_i02 const _vaddr,::ax_i8 const _scrnw,_pxtyp const * const _tex,::ax_i01 const _px,::ax_i8 const _w,::ax_i8 const _h) noexcept -> void { + static_assert(::__ax_typeq<_pxtyp,::ax_i8> || ::__ax_typeq<_pxtyp,::ax_i01>); + _pxtyp const * texpos = _tex; + for (::ax_i01 px = _px;px != _px + _h * _scrnw;) { + ::ax_i01 const rowstart = px; + for (;px != rowstart + _w;++px) { + if constexpr (::__ax_typeq<_pxtyp,::ax_i01>) { + ax_plot2(_vaddr,px,*(texpos++)); + } + else { + ax_plot1(_vaddr,px,*(texpos++)); + } + } + px = rowstart + _scrnw; + } +} + +extern "C" auto ax_plottex1(::ax_i02 const _vaddr,::ax_i8 const _scrnw,::ax_i8 const * const _tex,::ax_i01 const _px,::ax_i8 const _w,::ax_i8 const _h) -> void {::__ax_plottex(_vaddr,_scrnw,_tex,_px,_w,_h);} +extern "C" auto ax_plottex2(::ax_i02 const _vaddr,::ax_i8 const _scrnw,::ax_i01 const * const _tex,::ax_i01 const _px,::ax_i8 const _w,::ax_i8 const _h) -> void {::__ax_plottex(_vaddr,_scrnw,_tex,_px,_w,_h);} diff --git a/agbx/source/gfx/rd.c b/agbx/source/gfx/rd.c deleted file mode 100644 index aba36b1..0000000 --- a/agbx/source/gfx/rd.c +++ /dev/null @@ -1,24 +0,0 @@ -/* - Copyright 2022 Gabriel Jensen. - This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. - If a copy of the MPL was not distributed with this file, You can obtain one at <https://mozilla.org/MPL/2.0>. -*/ - -#include <ax/priv.h> - -#include <ax/gfx.h> - -ax_i01 ax_rd3(ax_i8 const _x,ax_i8 const _y) { - ax_i01 const px = _y * 0xF0u + _x; - return ax_getpx2(0x600'0000u,px); -} - -ax_i8 ax_rd4(ax_i02 const _vaddr,ax_i8 const _x,ax_i8 const _y) { - ax_i01 const px = _y * 0xF0u + _x; - return ax_getpx1(_vaddr,px); -} - -ax_i01 ax_rd5(ax_i02 const _vaddr,ax_i8 const _x,ax_i8 const _y) { - ax_i01 const px = _y * 0xA0u + _x; - return ax_getpx2(_vaddr,px); -} diff --git a/agbx/source/gfx/getpx.s b/agbx/source/gfx/rd.s index 1db82a8..6662848 100644 --- a/agbx/source/gfx/getpx.s +++ b/agbx/source/gfx/rd.s @@ -7,13 +7,13 @@ .cpu arm7tdmi .thumb -.globl ax_getpx1 -.globl ax_getpx2 +.globl ax_rd1 +.globl ax_rd2 .func .thumb_func -ax_getpx1: +ax_rd1: adds r0,r1 @ Get the address of the pixel by adding the offset to the video address. ldrh r0,[r0] bx lr @@ -23,7 +23,7 @@ ax_getpx1: .func .thumb_func -ax_getpx2: +ax_rd2: adds r0,r1 @ Get the address of the pixel by adding the offset to the video address. adds r0,r1 @ Add the offset twice as each pixel takes up two bytes. ldrh r0,[r0] diff --git a/agbx/source/gfx/setpx.c b/agbx/source/gfx/setpx.c deleted file mode 100644 index 7110d02..0000000 --- a/agbx/source/gfx/setpx.c +++ /dev/null @@ -1,31 +0,0 @@ -/* - Copyright 2022 Gabriel Jensen. - This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. - If a copy of the MPL was not distributed with this file, You can obtain one at <https://mozilla.org/MPL/2.0>. -*/ - -#include <ax/priv.h> - -#include <ax/gfx.h> - -void ax_setpx1(ax_i02 const _vaddr,ax_i01 const _px,ax_i8 const _col) { - /* We can only write halfwords to VRAM, so we need to load the adjacent pixel value and combine it into a halfword. */ - bool const odd = _px & 0x1u; - ax_i02 addr = _vaddr + _px - odd; - ax_i01 precol = __ax_get10(addr); - ax_i01 col = _col; - if (odd) { - precol &= 0b11111111u; - col <<= 0x8u; - } - else { - precol &= 0b1111111100000000u; - } - ax_i01 const newcol = precol | col; - __ax_set10(addr,newcol); -} - -void ax_setpx2(ax_i02 const _vaddr,ax_i01 const _px,ax_i01 const _col) { - ax_i02 const addr = _vaddr + _px; - __ax_set10(addr,_col); -} |