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cache texture size minus one + comments

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This commit is contained in:
Bigfoot71 2025-05-18 04:01:49 +02:00
parent 6a3818b34f
commit 07e891ad24
1 changed files with 20 additions and 16 deletions
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36
src/external/rlsw.h vendored
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@ -599,20 +599,20 @@ typedef struct {
void* ptr; //< WARNING: Should only be used to allocate and free data
} pixels;
int width;
int height;
int format;
int width, height; //< Dimensions of the texture
int wM1, hM1; //< Dimensions minus one
int format; //< Pixel format (internal representation)
SWfilter minFilter;
SWfilter magFilter;
SWfilter minFilter; //< Minification filter
SWfilter magFilter; //< Magnification filter
SWwrap sWrap;
SWwrap tWrap;
SWwrap sWrap; //< texcoord.x wrap mode
SWwrap tWrap; //< texcoord.y wrap mode
float tx;
float ty;
float tx; //< Texel width
float ty; //< Texel height
bool copy;
bool copy; //< Flag indicating whether memory has been allocated
} sw_texture_t;
@ -2068,18 +2068,18 @@ static inline void sw_texture_map(int* out, float in, int max, SWwrap mode)
static inline void sw_texture_sample_nearest(float* color, const sw_texture_t* tex, float u, float v)
{
int x, y;
sw_texture_map(&x, u, tex->width, tex->sWrap);
sw_texture_map(&y, v, tex->height, tex->tWrap);
sw_texture_map(&x, u, tex->wM1, tex->sWrap);
sw_texture_map(&y, v, tex->hM1, tex->tWrap);
sw_get_pixel(color, tex->pixels.cptr, y * tex->width + x, tex->format);
}
static inline void sw_texture_sample_linear(float* color, const sw_texture_t* tex, float u, float v)
{
int x0, y0, x1, y1;
sw_texture_map(&x0, u, tex->width, tex->sWrap);
sw_texture_map(&y0, v, tex->height, tex->tWrap);
sw_texture_map(&x1, u + tex->tx, tex->width, tex->sWrap);
sw_texture_map(&y1, v + tex->ty, tex->height, tex->tWrap);
sw_texture_map(&x0, u, tex->wM1, tex->sWrap);
sw_texture_map(&y0, v, tex->hM1, tex->tWrap);
sw_texture_map(&x1, u + tex->tx, tex->wM1, tex->sWrap);
sw_texture_map(&y1, v + tex->ty, tex->hM1, tex->tWrap);
float fx = u * (tex->width - 1) - x0;
float fy = v * (tex->height - 1) - y0;
@ -3915,6 +3915,8 @@ bool swInit(int w, int h)
RLSW.loadedTextures[0].pixels.cptr = defTex;
RLSW.loadedTextures[0].width = 2;
RLSW.loadedTextures[0].height = 2;
RLSW.loadedTextures[0].wM1 = 1;
RLSW.loadedTextures[0].hM1 = 1;
RLSW.loadedTextures[0].format = SW_PIXELFORMAT_UNCOMPRESSED_R32G32B32;
RLSW.loadedTextures[0].minFilter = SW_NEAREST;
RLSW.loadedTextures[0].magFilter = SW_NEAREST;
@ -5064,6 +5066,8 @@ void swTexImage2D(int width, int height, SWformat format, SWtype type, bool copy
texture->width = width;
texture->height = height;
texture->wM1 = width - 1;
texture->hM1 = height - 1;
texture->format = pixelFormat;
texture->tx = 1.0f / width;
texture->ty = 1.0f / height;