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Move draw_background to own file graphics.h.

This commit is contained in:
Simon Forman 2023-02-26 13:20:38 -08:00
parent 27385e5319
commit dbc2fe5854
3 changed files with 17 additions and 26 deletions
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15
implementations/uvm-ncc/graphics.h Normal file
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@ -0,0 +1,15 @@
void
draw_background(u32* buffer, size_t w, size_t h)
{
for (size_t x = 0; x < w; ++x) {
for (size_t y = 0; y < h; ++y) {
u32* pix_ptr = frame_buffer + w * y + x;
u8 blue = x & 255;
u8 green = y & 255;
u8 red = (x + y + 128) & 255;
u8 alpha = 123;
*pix_ptr = (alpha << 24) | (red << 16) | (green << 8) | blue;
}
}
}

10
implementations/uvm-ncc/not_a_makefile.txt
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@ -1,10 +0,0 @@
setenv UVM_JOY $HOME/src/Joypy/implementations/uvm-ncc
setenv UVM $HOME/src/uvm
setenv UVM_NCC $UVM/ncc
setenv UVM_VM $UVM/vm
cd $UVM_NCC
cargo run $UVM_JOY/xerblin.c
cd $UVM_VM
cargo run $UVM_NCC/out.asm
cd $UVM_JOY

18
implementations/uvm-ncc/xerblin.c
View File

@ -1,6 +1,7 @@
#include <uvm/syscalls.h>
#include <uvm/utils.h>
#include "/home/sforman/src/Joypy/implementations/uvm-ncc/font/font.h"
#include "/home/sforman/src/Joypy/implementations/uvm-ncc/graphics.h"
#define RED 0xFF_00_00
#define GREEN 0x00_FF_00
@ -39,21 +40,6 @@ draw_char(u8 ch, u64 dest_x, u64 dest_y)
}
}
void
draw_background()
{
for (size_t x = 0; x < FRAME_WIDTH; ++x) {
for (size_t y = 0; y < FRAME_HEIGHT; ++y) {
u32* pix_ptr = frame_buffer + FRAME_WIDTH * y + x;
u8 blue = x & 255;
u8 green = y & 255;
u8 red = (x + y + 128) & 255;
u8 alpha = 123;
*pix_ptr = (alpha << 24) | (red << 16) | (green << 8) | blue;
}
}
}
//void
//keydown(u64 window_id, u16 keycode)
@ -76,7 +62,7 @@ main()
{
init_font_data();
wid = window_create(FRAME_WIDTH, FRAME_HEIGHT, "Bouncing Ball Example", 0);
draw_background();
draw_background(frame_buffer, FRAME_WIDTH, FRAME_HEIGHT);
for (size_t ch = 0; ch < 94; ++ch) {
draw_char(
ch,