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new quickstart docs;

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reformat docs;
new simple uint32 test
This commit is contained in:
Sean Barrett
2014-09-14 14:55:23 -07:00
parent 3c261481a6
commit 9f66b441bd
2 changed files with 163 additions and 117 deletions
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36
tests/resample_test.cpp
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@ -750,6 +750,40 @@ void test_filters(void)
}
}
#define UMAX32 4294967295U
static void write32(char *filename, stbir_uint32 *output, int w, int h)
{
stbir_uint8 *data = (stbir_uint8*) malloc(w*h*3);
for (int i=0; i < w*h*3; ++i)
data[i] = output[i]>>24;
stbi_write_png(filename, w, h, 3, data, 0);
free(data);
}
static void test_32(void)
{
int w=100,h=120,x,y, out_w,out_h;
stbir_uint32 *input = (stbir_uint32*) malloc(4 * 3 * w * h);
stbir_uint32 *output = (stbir_uint32*) malloc(4 * 3 * 3*w * 3*h);
for (y=0; y < h; ++y) {
for (x=0; x < w; ++x) {
input[y*3*w + x*3 + 0] = x * ( UMAX32/w );
input[y*3*w + x*3 + 1] = y * ( UMAX32/h );
input[y*3*w + x*3 + 2] = UMAX32/2;
}
}
out_w = w*33/16;
out_h = h*33/16;
stbir_resize(input,w,h,0,output,out_w,out_h,0,STBIR_TYPE_UINT32,3,-1,0,STBIR_EDGE_CLAMP,STBIR_EDGE_CLAMP,STBIR_FILTER_DEFAULT,STBIR_FILTER_DEFAULT,STBIR_COLORSPACE_LINEAR,NULL);
write32("test-output/seantest_1.png", output,out_w,out_h);
out_w = w*16/33;
out_h = h*16/33;
stbir_resize(input,w,h,0,output,out_w,out_h,0,STBIR_TYPE_UINT32,3,-1,0,STBIR_EDGE_CLAMP,STBIR_EDGE_CLAMP,STBIR_FILTER_DEFAULT,STBIR_FILTER_DEFAULT,STBIR_COLORSPACE_LINEAR,NULL);
write32("test-output/seantest_2.png", output,out_w,out_h);
}
void test_suite(int argc, char **argv)
{
@ -758,6 +792,8 @@ void test_suite(int argc, char **argv)
_mkdir("test-output");
test_32();
if (argc > 1)
barbara = argv[1];
else