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Optimize helper functions

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This commit is contained in:
Miloslav Číž 2019-10-12 02:02:32 +02:00
parent 2483fb05d4
commit 7c5f93fac1
3 changed files with 15 additions and 5 deletions
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2
programs/modelViewer.c
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@ -346,7 +346,7 @@ void setModel(uint8_t index)
#undef modelCase #undef modelCase
S3L_initTransoform3D(&(scene.models[0].transform)); S3L_initTransform3D(&(scene.models[0].transform));
S3L_initDrawConfig(&(scene.models[0].config)); S3L_initDrawConfig(&(scene.models[0].config));
if (index == 3) if (index == 3)

4
programs/test.c
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@ -6,7 +6,11 @@
*/ */
#include <stdio.h> #include <stdio.h>
#define S3L_PIXEL_FUNCTION pixelFunc #define S3L_PIXEL_FUNCTION pixelFunc
#define S3L_RESOLUTION_X 100
#define S3L_RESOLUTION_Y 100
#include "../small3dlib.h" #include "../small3dlib.h"
#define TEST_BUFFER_W 16 #define TEST_BUFFER_W 16

14
small3dlib.h
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@ -10,7 +10,7 @@
license: CC0 1.0 (public domain) license: CC0 1.0 (public domain)
found at https://creativecommons.org/publicdomain/zero/1.0/ found at https://creativecommons.org/publicdomain/zero/1.0/
+ additional waiver of all IP + additional waiver of all IP
version: 0.851 version: 0.852
Before including the library, define S3L_PIXEL_FUNCTION to the name of the Before including the library, define S3L_PIXEL_FUNCTION to the name of the
function you'll be using to draw single pixels (this function will be called function you'll be using to draw single pixels (this function will be called
@ -568,6 +568,7 @@ static inline S3L_Unit S3L_max(S3L_Unit v1, S3L_Unit v2);
static inline S3L_Unit S3L_clamp(S3L_Unit v, S3L_Unit v1, S3L_Unit v2); static inline S3L_Unit S3L_clamp(S3L_Unit v, S3L_Unit v1, S3L_Unit v2);
static inline S3L_Unit S3L_wrap(S3L_Unit value, S3L_Unit mod); static inline S3L_Unit S3L_wrap(S3L_Unit value, S3L_Unit mod);
static inline S3L_Unit S3L_nonZero(S3L_Unit value); static inline S3L_Unit S3L_nonZero(S3L_Unit value);
static inline S3L_Unit S3L_zeroClamp(S3L_Unit value);
S3L_Unit S3L_sin(S3L_Unit x); S3L_Unit S3L_sin(S3L_Unit x);
S3L_Unit S3L_asin(S3L_Unit x); S3L_Unit S3L_asin(S3L_Unit x);
@ -1205,7 +1206,7 @@ void S3L_vec3Xmat4(S3L_Vec4 *v, S3L_Mat4 *m)
S3L_Unit S3L_abs(S3L_Unit value) S3L_Unit S3L_abs(S3L_Unit value)
{ {
return value >= 0 ? value : -1 * value; return value * (((value >= 0) << 1) - 1);
} }
S3L_Unit S3L_min(S3L_Unit v1, S3L_Unit v2) S3L_Unit S3L_min(S3L_Unit v1, S3L_Unit v2)
@ -1223,6 +1224,11 @@ S3L_Unit S3L_clamp(S3L_Unit v, S3L_Unit v1, S3L_Unit v2)
return v >= v1 ? (v <= v2 ? v : v2) : v1; return v >= v1 ? (v <= v2 ? v : v2) : v1;
} }
S3L_Unit S3L_zeroClamp(S3L_Unit value)
{
return (value * (value >= 0));
}
S3L_Unit S3L_wrap(S3L_Unit value, S3L_Unit mod) S3L_Unit S3L_wrap(S3L_Unit value, S3L_Unit mod)
{ {
return value >= 0 ? (value % mod) : (mod + (value % mod) - 1); return value >= 0 ? (value % mod) : (mod + (value % mod) - 1);
@ -1230,7 +1236,7 @@ S3L_Unit S3L_wrap(S3L_Unit value, S3L_Unit mod)
S3L_Unit S3L_nonZero(S3L_Unit value) S3L_Unit S3L_nonZero(S3L_Unit value)
{ {
return value != 0 ? value : 1; return (value + (value == 0));
} }
S3L_Unit S3L_interpolate(S3L_Unit v1, S3L_Unit v2, S3L_Unit t, S3L_Unit tMax) S3L_Unit S3L_interpolate(S3L_Unit v1, S3L_Unit v2, S3L_Unit t, S3L_Unit tMax)
@ -2600,7 +2606,7 @@ void S3L_drawScene(S3L_Scene scene)
S3L_sortArray[S3L_sortArrayLength].modelIndex = modelIndex; S3L_sortArray[S3L_sortArrayLength].modelIndex = modelIndex;
S3L_sortArray[S3L_sortArrayLength].triangleIndex = triangleIndex; S3L_sortArray[S3L_sortArrayLength].triangleIndex = triangleIndex;
S3L_sortArray[S3L_sortArrayLength].sortValue = S3L_sortArray[S3L_sortArrayLength].sortValue =
S3L_max(0,(transformed0.w + transformed1.w + transformed2.w)) >> 2; S3L_zeroClamp(transformed0.w + transformed1.w + transformed2.w) >> 2;
/* ^ /* ^
The w component here stores non-clamped z. The w component here stores non-clamped z.