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[fix] Draw effect target

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pyao12
2026-06-05 18:03:13 +08:00
Unverified
parent 5a31effcf1
commit 7c66610c13
9 changed files with 85 additions and 103 deletions
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graphics/context.cpp
+22
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@@ -1,15 +1,37 @@
// GFX 存在的意义是什么？
// 每一次想要draw pixel，都需要传入GOP的各种参数，
// 加入 GFX 后，GOP 的context就是全局的，可以直接用
// 而不用显示传递参数到draw的函数里
#include <graphics/context.h>
gfx_context g_gfx;
draw_target g_draw_target;
void gfx_init(EFI_GRAPHICS_OUTPUT_PROTOCOL *GOP) {
g_gfx.GOP = GOP;
g_gfx.hr = GOP->Mode->Info->HorizontalResolution;
g_gfx.vr = GOP->Mode->Info->VerticalResolution;
g_gfx.base = (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *) GOP->Mode->FrameBufferBase;
g_draw_target.buf = g_gfx.base;
g_draw_target.w = g_gfx.hr;
g_draw_target.h = g_gfx.vr;
}
void gfx_clear(void) {
EFI_GRAPHICS_OUTPUT_BLT_PIXEL black = {0, 0, 0, 0};
g_gfx.GOP->Blt(g_gfx.GOP, &black, EfiBltVideoFill, 0, 0, 0, 0, g_gfx.hr, g_gfx.vr, 0);
}
void draw_set_target(EFI_GRAPHICS_OUTPUT_BLT_PIXEL *buf, unsigned int w, unsigned int h) {
g_draw_target.buf = buf;
g_draw_target.w = w;
g_draw_target.h = h;
}
void draw_set_default_target(void) {
g_draw_target.buf = g_gfx.base;
g_draw_target.w = g_gfx.hr;
g_draw_target.h = g_gfx.vr;
}