mirror of
https://github.com/ClassiCube/ClassiCube.git
synced 2025-08-05 03:37:10 -04:00
119 lines
3.0 KiB
C
119 lines
3.0 KiB
C
// Scratchpad memory is essentially data cache of CPU,
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// and so takes less cycles to access
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#define SCRATCHPAD_MEM ((cc_uint8*)0x1F800000)
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enum dma_chrc_flags {
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CHRC_STATUS_BUSY = (1 << 24),
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};
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enum dma_chrc_CMD {
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CHRC_FROM_RAM = (1 << 0),
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CHRC_DIR_DECREMENT = (1 << 1),
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CHRC_MODE_SLICE = (1 << 9),
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CHRC_MODE_CHAIN = (1 << 10),
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CHRC_BEGIN_XFER = (1 << 24),
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CHRC_NO_DREQ_WAIT = (1 << 28),
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};
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enum gpu_status_flags {
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GPU_STATUS_CMD_READY = (1 << 26),
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GPU_STATUS_DMA_RECV_READY = (1 << 28),
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};
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enum gp0_cmd_type {
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GP0_CMD_CLEAR_VRAM_CACHE = 0x01000000,
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GP0_CMD_MEM_FILL = 0x02000000,
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GP0_CMD_TRANSFER_TO_VRAM = 0xA0000000,
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GP0_CMD_POLYGON = 0x20000000,
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GP0_CMD_RECTANGLE = 0x60000000,
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GP0_CMD_TEXTURE_PAGE = 0xE1000000,
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GP0_CMD_TEXTURE_WINDOW = 0xE2000000,
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GP0_CMD_DRAW_AREA_MIN = 0xE3000000,
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GP0_CMD_DRAW_AREA_MAX = 0xE4000000,
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GP0_CMD_DRAW_AREA_OFFSET = 0xE5000000,
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};
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enum gp0_polycmd_flags {
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POLY_CMD_QUAD = 1u << 27,
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POLY_CMD_TEXTURED = 1u << 26,
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POLY_CMD_SEMITRNS = 1u << 25,
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};
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enum gp0_rectcmd_flags {
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RECT_CMD_1x1 = 1u << 27,
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};
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enum gp1_cmd_type {
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GP1_CMD_RESET_GPU = 0x00000000,
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GP1_CMD_DISPLAY_ACTIVE = 0x03000000,
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GP1_CMD_DMA_MODE = 0x04000000,
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GP1_CMD_DISPLAY_ADDRESS = 0x05000000,
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GP1_CMD_HORIZONTAL_RANGE = 0x06000000,
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GP1_CMD_VERTICAL_RANGE = 0x07000000,
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GP1_CMD_VIDEO_MODE = 0x08000000,
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};
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enum gp1_cmd_display {
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GP1_DISPLAY_DISABLED = 1,
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GP1_DISPLAY_ENABLED = 0,
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};
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enum gp1_cmd_dma_mode {
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GP1_DMA_NONE = 0,
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GP1_DMA_CPU_TO_GP0 = 2,
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};
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enum gp1_cmd_display_mode {
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GP1_HOR_RES_320 = 1 << 0,
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GP1_VER_RES_240 = 0 << 2,
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};
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// === MISC COMMANDS ===
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#define GP0_CMD_DRAW_MIN_PACK(x, y) ( GP0_CMD_DRAW_AREA_MIN | ((x) & 0x3FF) | (((y) & 0x3FF) << 10) )
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#define GP0_CMD_DRAW_MAX_PACK(x, y) ( GP0_CMD_DRAW_AREA_MAX | ((x) & 0x3FF) | (((y) & 0x3FF) << 10) )
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#define GP0_CMD_DRAW_OFFSET_PACK(x, y) ( GP0_CMD_DRAW_AREA_OFFSET | ((x) & 0x7FF) | (((y) & 0x7FF) << 11) )
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#define GP1_CMD_DISPLAY_ADDRESS_XY(x, y) ( ((x) & 0x3FF) | (((y) & 0x1FF) << 10) )
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#define GP0_CMD_FILL_XY(x, y) ( ((x) & 0xFFFF) | (((y) & 0xFFFF) << 16) )
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#define GP0_CMD_FILL_WH(w, h) ( ((w) & 0xFFFF) | (((h) & 0xFFFF) << 16) )
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#define PACK_RGBC(r, g, b, c) ( (r) | ((g) << 8) | ((b) << 16) | (c) )
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#define GP0_CMD_CLUT_XY(x, y) ( ((x) & 0x3F) | (((y) & 0x1FF) << 6) )
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// === POLYGON COMMANDS ===
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#define POLY_CODE_F4 (GP0_CMD_POLYGON | POLY_CMD_QUAD)
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#define POLY_LEN_F4 5
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struct PSX_POLY_F4 {
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uint32_t tag;
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uint32_t rgbc; // r0, g0, b0, code;
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int16_t x0, y0;
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int16_t x1, y1;
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int16_t x2, y2;
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int16_t x3, y3;
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};
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#define POLY_CODE_FT4 (GP0_CMD_POLYGON | POLY_CMD_QUAD | POLY_CMD_TEXTURED)
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#define POLY_LEN_FT4 9
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struct PSX_POLY_FT4 {
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uint32_t tag;
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uint32_t rgbc; // r0, g0, b0, code;
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uint16_t x0, y0;
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uint8_t u0, v0;
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uint16_t clut;
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int16_t x1, y1;
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uint8_t u1, v1;
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uint16_t tpage;
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int16_t x2, y2;
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uint8_t u2, v2;
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uint16_t pad0;
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int16_t x3, y3;
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uint8_t u3, v3;
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uint16_t pad1;
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};
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