mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-06 02:45:07 +01:00
e7754fd7cb
- drastically reduced memory usage (free remaining memory can now be checked under "exit" options) - improved GX video rendering (fixes screen tearing when VSYNC is disabled)
105 lines
4.1 KiB
C
105 lines
4.1 KiB
C
/****************************************************************************
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* gx_video.c
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*
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* Genesis Plus GX video support
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*
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* Copyright Eke-Eke (2007-2014), based on original work from Softdev (2006)
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*
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* Redistribution and use of this code or any derivative works are permitted
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* provided that the following conditions are met:
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*
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* - Redistributions may not be sold, nor may they be used in a commercial
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* product or activity.
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*
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* - Redistributions that are modified from the original source must include the
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* complete source code, including the source code for all components used by a
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* binary built from the modified sources. However, as a special exception, the
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* source code distributed need not include anything that is normally distributed
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* (in either source or binary form) with the major components (compiler, kernel,
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* and so on) of the operating system on which the executable runs, unless that
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* component itself accompanies the executable.
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*
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* - Redistributions must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************************/
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#ifndef _GC_VIDEO_H_
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#define _GC_VIDEO_H_
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/* EFB colors */
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#define BLACK {0x00,0x00,0x00,0xff}
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#define DARK_GREY {0x22,0x22,0x22,0xff}
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#define LIGHT_BLUE {0xb8,0xc7,0xda,0xff}
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#define SKY_BLUE {0x99,0xcc,0xff,0xff}
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#define LIGHT_GREEN {0xa9,0xc7,0xc6,0xff}
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#define WHITE {0xff,0xff,0xff,0xff}
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/* Directly fill a RGB565 texture */
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/* One tile is 32 byte = 4x4 pixels */
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/* Tiles are stored continuously in texture memory */
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#define CUSTOM_BLITTER(line, width, table, in) \
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width >>= 2; \
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u16 *out = (u16 *) (bitmap.data + (((width << 5) * (line >> 2)) + ((line & 3) << 3))); \
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do \
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{ \
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*out++ = table[*in++]; \
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*out++ = table[*in++]; \
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*out++ = table[*in++]; \
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*out++ = table[*in++]; \
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out += 12; \
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} \
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while (--width);
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/* image texture */
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typedef struct
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{
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u8 *data;
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u16 width;
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u16 height;
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u8 format;
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} gx_texture;
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/* Global variables */
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extern GXRModeObj *vmode;
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extern u32 gc_pal;
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extern u32 videoSync;
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/* GX rendering */
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extern void gxDrawRectangle(s32 x, s32 y, s32 w, s32 h, u8 alpha, GXColor color);
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extern void gxDrawTexture(gx_texture *texture, s32 x, s32 y, s32 w, s32 h, u8 alpha);
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extern void gxDrawTextureRepeat(gx_texture *texture, s32 x, s32 y, s32 w, s32 h, u8 alpha);
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extern void gxDrawTextureRotate(gx_texture *texture, s32 x, s32 y, s32 w, s32 h, f32 angle, u8 alpha);
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extern void gxDrawScreenshot(u8 alpha);
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extern void gxCopyScreenshot(gx_texture *texture);
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extern void gxSaveScreenshot(char *filename);
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extern void gxClearScreen(GXColor color);
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extern void gxSetScreen(void);
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/* PNG textures */
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extern gx_texture *gxTextureOpenPNG(const u8 *png_data, FILE *png_file);
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extern void gxTextureWritePNG(gx_texture *p_texture, FILE *png_file);
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extern void gxTextureClose(gx_texture **p_texture);
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/* GX video engine */
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extern void gx_video_Init(void);
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extern void gx_video_Shutdown(void);
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extern void gx_video_Start(void);
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extern void gx_video_Stop(void);
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extern int gx_video_Update(u32 done);
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#endif
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