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WIP: preparing to setup metaprogramming codegen for PS1 processors.

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This commit is contained in:
Edward R. Gonzalez
2026-06-01 02:57:56 -04:00
parent 8b5fb7a5a1
commit fe4bd6d86d
11 changed files with 649 additions and 367 deletions
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code/duffle/gp.h
+29 -4
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@@ -4,7 +4,7 @@
# include "math.h"
#endif
typedef def_enum(U4, gp_Commands) {
typedef Enum_(U4, gp_Commands) {
gcmd_Reset = 0b000,
gcmd_Polygon = 0b001,
gcmd_Line = 0b010,
@@ -75,8 +75,8 @@ enum {
gp_SetArea_BottomRight = (gcmd_SetDrawArea_BotRight << gcmd_offset),
};
typedef def_struct(RGB8) { B1 r; B1 g; B1 b; };
#define rgb8(r, g, b) (RGB8){ r, g, b }
typedef Struct_(RGB8) { B1 r; B1 g; B1 b; };
#define rgb8(r, g, b) (RGB8){ r, g, b }
typedef B1 gp_Pixel16[1];
typedef B1 gp_Pixel24[3];
@@ -88,10 +88,35 @@ enum {
gp_b16_Y = 16,
};
typedef def_struct(gp_Vec2) { U2 y; U2 x; };
typedef Struct_(gp_Vec2) { U2 y; U2 x; };
#if 1
void gp_screen_init(void) __asm__("gp_screen_init_asm");
#else
#define gp_screen_init() gp_screen_init_c11()
#endif
// TODO REVIEW:
/* --- GPU Command Semantics (GP0) --- */
#define GPU_CMD_CLEAR_CACHE 0x01
#define GPU_CMD_VRAM_FILL 0x02
#define GPU_CMD_VRAM_COPY 0x80
#define GPU_CMD_VRAM_READ 0xC0
#define GPU_CMD_POLY_F3 0x20 /* Flat Triangle */
#define GPU_CMD_POLY_FT3 0x24 /* Flat Textured Triangle */
#define GPU_CMD_POLY_G3 0x30 /* Gouraud Triangle */
#define GPU_CMD_POLY_GT3 0x34 /* Gouraud Textured Triangle */
#define GPU_CMD_POLY_F4 0x28 /* Flat Quad */
#define GPU_CMD_POLY_FT4 0x2C /* Flat Textured Quad */
#define GPU_CMD_POLY_G4 0x38 /* Gouraud Quad */
#define GPU_CMD_POLY_GT4 0x3C /* Gouraud Textured Quad */
/* --- Hardware MMIO Addresses --- */
#define HW_GP0_ADDR 0x1F801810 /* GPU Data Port */
#define HW_GP1_ADDR 0x1F801814 /* GPU Status/Control Port */