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refactoring without gotos for triangle and quad rasterizers

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This commit is contained in:
Bigfoot71 2026-07-19 14:00:55 +02:00
commit dc98dde2e8
1 changed files with 26 additions and 41 deletions
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71
src/external/rlsw.h vendored
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@ -5405,49 +5405,40 @@ static void SW_RASTER_TRIANGLE_SPAN(const sw_vertex_t *start, const sw_vertex_t
// Inner span pixel loop
for (; x < blockEnd; x++)
{
#if (SW_RASTER_TRIANGLE_FLAGS) & SW_STATE_DEPTH_TEST
#if (SW_RASTER_TRIANGLE_FLAGS) & SW_STATE_DEPTH_TEST
float depth = SW_FRAMEBUFFER_DEPTH_GET(dPtr, 0);
if (z <= depth)
{
float depth = SW_FRAMEBUFFER_DEPTH_GET(dPtr, 0);
if (z > depth) goto discard;
SW_FRAMEBUFFER_DEPTH_SET(dPtr, z, 0);
}
#endif
#endif
#if (SW_RASTER_TRIANGLE_FLAGS) & SW_STATE_TEXTURE_2D
{
float finalColor[4];
ctx->sample(finalColor, RLSW.boundTexture, tcAffine[0], tcAffine[1]);
SW_VEC_OP(finalColor[i] *= srcColor[i], i, 4);
#if (SW_RASTER_TRIANGLE_FLAGS) & SW_STATE_BLEND
{
float dstColor[4];
SW_FRAMEBUFFER_COLOR_GET(dstColor, cPtr, 0);
RLSW.blendFunc(dstColor, finalColor);
SW_FRAMEBUFFER_COLOR_SET(cPtr, dstColor, 0);
}
#else
SW_FRAMEBUFFER_COLOR_SET(cPtr, finalColor, 0);
#endif
}
#define SW_FINAL_COLOR finalColor
#else
{
#if (SW_RASTER_TRIANGLE_FLAGS) & SW_STATE_BLEND
{
float dstColor[4];
SW_FRAMEBUFFER_COLOR_GET(dstColor, cPtr, 0);
RLSW.blendFunc(dstColor, srcColor);
SW_FRAMEBUFFER_COLOR_SET(cPtr, dstColor, 0);
}
#else
SW_FRAMEBUFFER_COLOR_SET(cPtr, srcColor, 0);
#endif
}
#define SW_FINAL_COLOR srcColor
#endif
#if (SW_RASTER_TRIANGLE_FLAGS) & SW_STATE_BLEND
{
float dstColor[4];
SW_FRAMEBUFFER_COLOR_GET(dstColor, cPtr, 0);
RLSW.blendFunc(dstColor, SW_FINAL_COLOR);
SW_FRAMEBUFFER_COLOR_SET(cPtr, dstColor, 0);
}
#else
SW_FRAMEBUFFER_COLOR_SET(cPtr, SW_FINAL_COLOR, 0);
#endif
#undef SW_FINAL_COLOR
#if (SW_RASTER_TRIANGLE_FLAGS) & SW_STATE_DEPTH_TEST
discard:
}
#endif
// Advance unconditionally: depth test only guards the write above
cPtr += SW_FRAMEBUFFER_COLOR_SIZE;
#if (SW_RASTER_TRIANGLE_FLAGS) & SW_STATE_DEPTH_TEST
dPtr += SW_FRAMEBUFFER_DEPTH_SIZE;
@ -5710,38 +5701,32 @@ static void SW_RASTER_QUAD(const sw_vertex_t *a, const sw_vertex_t *b,
const float *srcColor = SW_QUAD_BASE_COLOR;
#endif
#if (SW_RASTER_QUAD_FLAGS) & SW_STATE_DEPTH_TEST
#if (SW_RASTER_QUAD_FLAGS) & SW_STATE_DEPTH_TEST
float depth = SW_FRAMEBUFFER_DEPTH_GET(dPtr, 0);
if (z <= depth)
{
float depth = SW_FRAMEBUFFER_DEPTH_GET(dPtr, 0);
if (z > depth) goto discard;
SW_FRAMEBUFFER_DEPTH_SET(dPtr, z, 0);
}
#endif
#endif
#if (SW_RASTER_QUAD_FLAGS) & SW_STATE_TEXTURE_2D
{
float texColor[4];
sample(texColor, RLSW.boundTexture, tc[0], tc[1]);
SW_VEC_OP(srcColor[i] *= texColor[i], i, 4);
}
#endif
#if (SW_RASTER_QUAD_FLAGS) & SW_STATE_BLEND
{
float dstColor[4];
SW_FRAMEBUFFER_COLOR_GET(dstColor, cPtr, 0);
RLSW.blendFunc(dstColor, srcColor);
SW_FRAMEBUFFER_COLOR_SET(cPtr, dstColor, 0);
}
#else
{
SW_FRAMEBUFFER_COLOR_SET(cPtr, srcColor, 0);
}
#endif
#if (SW_RASTER_QUAD_FLAGS) & SW_STATE_DEPTH_TEST
discard:
}
#endif
// Move one pixel over without touching the original "start offset"
#if (SW_RASTER_QUAD_FLAGS) & SW_STATE_COLOR_INTERP
SW_VEC_OP(color[i] += dCdx[i], i, 4);