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sets internal the number of vertices post-clipping and the epsilon clipping + a little cleanup

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This commit is contained in:
Bigfoot71 2026-03-18 21:38:18 +01:00
parent bdc2a6e26e
commit 6bacc7de2e
1 changed files with 9 additions and 17 deletions
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26
src/external/rlsw.h vendored
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@ -164,19 +164,6 @@
#endif
#endif
// Under normal circumstances, clipping a polygon can add at most one vertex per clipping plane
// Considering the largest polygon involved is a quadrilateral (4 vertices),
// and that clipping occurs against both the frustum (6 planes) and the scissors (4 planes),
// the maximum number of vertices after clipping is:
// 4 (original vertices) + 6 (frustum planes) + 4 (scissors planes) = 14
#ifndef SW_MAX_CLIPPED_POLYGON_VERTICES
#define SW_MAX_CLIPPED_POLYGON_VERTICES 14
#endif
#ifndef SW_CLIP_EPSILON
#define SW_CLIP_EPSILON 1e-4f
#endif
//----------------------------------------------------------------------------------
// OpenGL Compatibility Types
//----------------------------------------------------------------------------------
@ -870,6 +857,13 @@ SWAPI void swGetFramebufferAttachmentParameteriv(SWattachment attachment, SWatta
#define SW_DEG2RAD (SW_PI/180.0f)
#define SW_RAD2DEG (180.0f/SW_PI)
// When clipping a convex polygon against a plane, at most one vertex is added.
// Starting from a quadrilateral (4 vertices), clipped sequentially against
// the frustum (6 planes) then the scissor rectangle (4 planes):
// 4 + 6 + 4 = 14 vertices maximum.
#define SW_MAX_CLIPPED_POLYGON_VERTICES 14
#define SW_CLIP_EPSILON 1e-4f
#define SW_HANDLE_NULL 0u
#define SW_POOL_SLOT_LIVE 0x80u // bit7 of the generation byte
#define SW_POOL_SLOT_VER_MASK 0x7Fu // bits6:0 = anti-ABA counter
@ -1427,7 +1421,7 @@ static inline uint32_t sw_compress_8to6(uint8_t v) { return v >> 2; }
//-------------------------------------------------------------------------------------------
static bool sw_pool_init(sw_pool_t *pool, int capacity, size_t stride)
{
*pool = (sw_pool_t){ 0 };
*pool = (sw_pool_t) { 0 };
pool->data = SW_CALLOC(capacity, stride);
pool->gen = SW_CALLOC(capacity, sizeof(uint8_t));
@ -4232,13 +4226,11 @@ void swClear(uint32_t bitmask)
if ((bitmask & (SW_COLOR_BUFFER_BIT)) && (RLSW.colorBuffer != NULL) && (RLSW.colorBuffer->pixels != NULL))
{
int size = RLSW.colorBuffer->width*RLSW.colorBuffer->height;
sw_framebuffer_fill_color(RLSW.colorBuffer, RLSW.clearColor);
}
if ((bitmask & (SW_DEPTH_BUFFER_BIT)) && (RLSW.depthBuffer != NULL) && (RLSW.depthBuffer->pixels != NULL))
{
int size = RLSW.depthBuffer->width*RLSW.depthBuffer->height;
sw_framebuffer_fill_depth(RLSW.depthBuffer, RLSW.clearDepth);
}
}
@ -4889,7 +4881,7 @@ void swDeleteTextures(int count, sw_handle_t *textures)
if (tex == RLSW.depthBuffer) RLSW.depthBuffer = NULL;
sw_texture_free(tex);
*tex = (sw_texture_t){ 0 };
*tex = (sw_texture_t) { 0 };
sw_pool_free(&RLSW.texturePool, textures[i]);
}