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review get pixel functions

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+ review unorm/float conversion
This commit is contained in:
Bigfoot71 2025-03-13 23:13:34 +01:00
parent d3fe48fa7d
commit 2666eedeb0
1 changed files with 24 additions and 21 deletions
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45
src/external/rlsw.h vendored
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@ -337,6 +337,12 @@ void swBindTexture(uint32_t id);
#define SW_DEG2RAD (SW_PI/180.0f)
#define SW_RAD2DEG (180.0f/SW_PI)
#define SW_FLOAT_TO_UNORM8(x) ((uint8_t)((x) * UINT8_MAX))
#define SW_FLOAT_TO_UNORM16(x) ((uint16_t)((x) * UINT16_MAX))
#define SW_UNORM8_TO_FLOAT(x) ((float)(x) * (1.0f / UINT8_MAX))
#define SW_UNORM16_TO_FLOAT(x) ((float)(x) * (1.0f / UINT16_MAX))
#define SW_STATE_CHECK(flags) ((RLSW.stateFlags & (flags)) == (flags))
#define SW_STATE_TEXTURE_2D (1 << 0)
@ -639,7 +645,7 @@ static inline float sw_cvt_hf(sw_half_t y)
static inline void sw_get_pixel_grayscale(float* color, const void* pixels, uint32_t offset)
{
float gray = (float)((uint8_t*)pixels)[offset] / 255;
float gray = SW_UNORM8_TO_FLOAT(((uint8_t*)pixels)[offset]);
color[0] = gray;
color[1] = gray;
@ -669,13 +675,10 @@ static inline void sw_get_pixel_red_32(float* color, const void* pixels, uint32_
static inline void sw_get_pixel_grayscale_alpha(float* color, const void* pixels, uint32_t offset)
{
float gray = (float)((uint8_t*)pixels)[2 * offset] / 255;
float alpha = (float)((uint8_t*)pixels)[2 * offset + 1] / 255;
const uint8_t* pixelData = (const uint8_t*)pixels + 2 * offset;
color[0] = gray;
color[1] = gray;
color[2] = gray;
color[3] = alpha;
color[0] = color[1] = color[2] = SW_UNORM8_TO_FLOAT(pixelData[0]);
color[3] = SW_UNORM8_TO_FLOAT(pixelData[1]);
}
static inline void sw_get_pixel_rgb_565(float* color, const void* pixels, uint32_t offset)
@ -690,11 +693,11 @@ static inline void sw_get_pixel_rgb_565(float* color, const void* pixels, uint32
static inline void sw_get_pixel_rgb_888(float* color, const void* pixels, uint32_t offset)
{
const uint8_t* pixel = (uint8_t*)pixels + 3 * offset;
const uint8_t* pixel = (const uint8_t*)pixels + 3 * offset;
color[0] = (float)pixel[0] / 255;
color[1] = (float)pixel[1] / 255;
color[2] = (float)pixel[2] / 255;
color[0] = SW_UNORM8_TO_FLOAT(pixel[0]);
color[1] = SW_UNORM8_TO_FLOAT(pixel[1]);
color[2] = SW_UNORM8_TO_FLOAT(pixel[2]);
color[3] = 1.0f;
}
@ -742,10 +745,10 @@ static inline void sw_get_pixel_rgba_8888(float* color, const void* pixels, uint
{
const uint8_t *pixel = (uint8_t*)pixels + 4 * offset;
color[0] = (float)pixel[0] / 255;
color[1] = (float)pixel[1] / 255;
color[2] = (float)pixel[2] / 255;
color[3] = (float)pixel[3] / 255;
color[0] = SW_UNORM8_TO_FLOAT(pixel[0]);
color[1] = SW_UNORM8_TO_FLOAT(pixel[1]);
color[2] = SW_UNORM8_TO_FLOAT(pixel[2]);
color[3] = SW_UNORM8_TO_FLOAT(pixel[3]);
}
static inline void sw_get_pixel_rgba_16161616(float* color, const void* pixels, uint32_t offset)
@ -1292,12 +1295,12 @@ static inline void FUNC_NAME(const sw_texture_t* tex, const sw_vertex_t* start,
if (ENABLE_DEPTH_TEST) { \
/* Depth testing with direct access to the depth buffer */ \
/* TODO: Implement different depth funcs? */ \
float depth = (float)(*dptr) / UINT16_MAX; \
float depth = SW_UNORM16_TO_FLOAT(*dptr); \
if (z > depth) goto discard; \
} \
\
/* Update the depth buffer */ \
*dptr = (uint16_t)(z * UINT16_MAX); \
*dptr = SW_FLOAT_TO_UNORM16(z); \
\
if (ENABLE_COLOR_BLEND) \
{ \
@ -1748,11 +1751,11 @@ static inline void FUNC_NAME(const sw_vertex_t* v0, const sw_vertex_t* v1) \
\
uint16_t* dptr = &depthBuffer[pixel_index]; \
if (ENABLE_DEPTH_TEST) { \
float depth = (float)(*dptr) / UINT16_MAX; \
float depth = SW_UNORM16_TO_FLOAT(*dptr); \
if (z > depth) continue; \
} \
\
*dptr = (uint16_t)(z * UINT16_MAX); \
*dptr = SW_FLOAT_TO_UNORM16(z); \
\
int color_index = 4 * pixel_index; \
uint8_t* cptr = &colorBuffer[color_index]; \
@ -1790,11 +1793,11 @@ static inline void FUNC_NAME(const sw_vertex_t* v0, const sw_vertex_t* v1) \
\
uint16_t* dptr = &depthBuffer[pixel_index]; \
if (ENABLE_DEPTH_TEST) { \
float depth = (float)(*dptr) / UINT16_MAX; \
float depth = SW_UNORM16_TO_FLOAT(*dptr); \
if (z > depth) continue; \
} \
\
*dptr = (uint16_t)(z * UINT16_MAX); \
*dptr = SW_FLOAT_TO_UNORM16(z); \
\
int color_index = 4 * pixel_index; \
uint8_t* cptr = &colorBuffer[color_index]; \