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https://github.com/luksamuk/engine-psx.git
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74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
#ifndef RENDER_H
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#define RENDER_H
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#include <psxgpu.h>
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#define SCREEN_XRES 320
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#define SCREEN_YRES 240
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#define SCREEN_Z 320
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#define CENTERX (SCREEN_XRES >> 1)
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#define CENTERY (SCREEN_YRES >> 1)
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// Length of the ordering table, i.e. the range Z coordinates can have, 0-15 in
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// this case. Larger values will allow for more granularity with depth (useful
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// when drawing a complex 3D scene) at the expense of RAM usage and performance.
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#define OT_LENGTH 2048
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// Size of the buffer GPU commands and primitives are written to. If the program
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// crashes due to too many primitives being drawn, increase this value.
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//#define BUFFER_LENGTH 8192
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#define BUFFER_LENGTH 24576
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//#define BUFFER_LENGTH 40960
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//#define BUFFER_LENGTH 65532
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// Lerp color with respect to background color (0-128) and target color
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// (useful for fade in and fade out)
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#define LERPC(bg, c) ((c * bg) / 128)
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/* LAYER INDICES (OTZ for 2D elements) */
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#define OTZ_LAYER_TOPMOST 0
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#define OTZ_LAYER_HUD 1
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#define OTZ_LAYER_LEVEL_FG_FRONT 2
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#define OTZ_LAYER_OBJECTS 3
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#define OTZ_LAYER_PLAYER 4
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#define OTZ_LAYER_LEVEL_FG_BACK (OT_LENGTH - 3)
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#define OTZ_LAYER_LEVEL_BG (OT_LENGTH - 2)
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/* Framebuffer/display list class */
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typedef struct {
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DISPENV disp_env;
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DRAWENV draw_env;
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uint32_t ot[OT_LENGTH];
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uint8_t buffer[BUFFER_LENGTH];
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} RenderBuffer;
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typedef struct {
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RenderBuffer buffers[2];
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uint8_t *next_packet;
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int active_buffer;
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} RenderContext;
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void setup_context();
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void set_clear_color(uint8_t r, uint8_t g, uint8_t b);
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void force_clear();
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void swap_buffers();
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void *get_next_prim();
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uint32_t *get_ot_at(uint32_t otz);
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void increment_prim(uint32_t size);
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void sort_prim(void *prim, uint32_t otz);
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void draw_quad(int16_t vx, int16_t vy,
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int16_t w, int16_t h,
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uint8_t r, uint8_t g, uint8_t b,
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uint8_t semitrans,
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uint16_t otz);
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void draw_text(int x, int y, int z, const char *text);
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void render_loading_text();
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RECT *render_get_buffer_clip(void);
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#endif
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