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add clear buffer bitmasks

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This commit is contained in:
Bigfoot71 2025-03-13 01:58:15 +01:00
parent ff1849dc97
commit a1b2ecbded
1 changed files with 31 additions and 5 deletions
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34
src/external/rlsw.h vendored
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@ -71,6 +71,9 @@
#define GL_CULL_FACE 0x0B44
#define GL_BLEND 0x0BE2
#define GL_COLOR_BUFFER_BIT 0x00004000
#define GL_DEPTH_BUFFER_BIT 0x00000100
#define GL_MODELVIEW 0x1700
#define GL_PROJECTION 0x1701
#define GL_TEXTURE 0x1702
@ -141,6 +144,11 @@ typedef enum {
SW_BLEND = GL_BLEND
} SWstate;
typedef enum {
SW_COLOR_BUFFER_BIT = GL_COLOR_BUFFER_BIT,
SW_DEPTH_BUFFER_BIT = GL_DEPTH_BUFFER_BIT
} SWbuffer;
typedef enum {
SW_PROJECTION = GL_PROJECTION,
SW_MODELVIEW = GL_MODELVIEW,
@ -259,7 +267,7 @@ void swOrtho(double left, double right, double bottom, double top, double znear,
void swViewport(int x, int y, int width, int height);
void swClearColor(float r, float g, float b, float a);
void swClear(void);
void swClear(uint32_t bitmask);
void swBlendFunc(SWfactor sfactor, SWfactor dfactor);
void swCullFace(SWface face);
@ -2227,13 +2235,31 @@ void swClearColor(float r, float g, float b, float a)
RLSW.clearColor[3] = a * 255;
}
void swClear(void)
void swClear(uint32_t bitmask)
{
int size = RLSW.framebuffer.width * RLSW.framebuffer.height;
uint32_t* cptr = (uint32_t*)RLSW.framebuffer.color;
uint16_t* dptr = RLSW.framebuffer.depth;
uint32_t c = *((uint32_t*)RLSW.clearColor);
uint16_t d = RLSW.clearDepth;
if ((bitmask & (SW_COLOR_BUFFER_BIT | SW_DEPTH_BUFFER_BIT)) == (SW_COLOR_BUFFER_BIT | SW_DEPTH_BUFFER_BIT)) {
for (int i = 0; i < size; i++) {
((uint32_t*)RLSW.framebuffer.color)[i] = *((uint32_t*)RLSW.clearColor);
RLSW.framebuffer.depth[i] = RLSW.clearDepth;
cptr[i] = c;
dptr[i] = d;
}
}
else if (bitmask & (SW_COLOR_BUFFER_BIT)) {
for (int i = 0; i < size; i++) {
cptr[i] = c;
}
}
else if (bitmask & SW_DEPTH_BUFFER_BIT) {
for (int i = 0; i < size; i++) {
dptr[i] = d;
}
}
}