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-rw-r--r--Build/source/libs/gd/libgd-src/tests/gdimagesetpixel/alpha_blending.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/Build/source/libs/gd/libgd-src/tests/gdimagesetpixel/alpha_blending.c b/Build/source/libs/gd/libgd-src/tests/gdimagesetpixel/alpha_blending.c
new file mode 100644
index 00000000000..9874df659d9
--- /dev/null
+++ b/Build/source/libs/gd/libgd-src/tests/gdimagesetpixel/alpha_blending.c
@@ -0,0 +1,54 @@
+/**
+ * Testing all effects
+ */
+
+
+#include "gd.h"
+#include "gdtest.h"
+
+
+int main()
+{
+ gdImagePtr im;
+ int effects[] = {
+ gdEffectReplace, gdEffectAlphaBlend, gdEffectNormal,
+ gdEffectOverlay, gdEffectMultiply
+ };
+ int red[3], blue[3];
+ int x, y, i, j;
+ char *path;
+
+ red[0] = gdTrueColorAlpha(0, 0, 255, 127);
+ red[1] = gdTrueColorAlpha(0, 0, 255, 63);
+ red[2] = gdTrueColorAlpha(0, 0, 255, 0);
+ blue[0] = gdTrueColorAlpha(255, 0, 0, 127);
+ blue[1] = gdTrueColorAlpha(255, 0, 0, 63);
+ blue[2] = gdTrueColorAlpha(255, 0, 0, 0);
+
+ im = gdImageCreateTrueColor(120, 180);
+
+ gdImageAlphaBlending(im, gdEffectReplace);
+ for (j = 0; j < 3; j++) {
+ y = 60 * j;
+ gdImageFilledRectangle(im, 0,y, 119,y+59, red[j]);
+ }
+
+ for (i = 0; i < 5; i++) {
+ x = 20 * i;
+ gdImageAlphaBlending(im, effects[i]);
+ for (j = 0; j < 9; j++) {
+ y = 20 * j;
+ gdImageFilledRectangle(im, x+20,y, x+39,y+19, blue[j % 3]);
+ }
+ }
+
+ gdImageSaveAlpha(im, 1);
+
+ path = gdTestFilePath2("gdimagesetpixel", "alphablending_exp.png");
+ gdAssertImageEqualsToFile(path, im);
+ gdFree(path);
+
+ gdImageDestroy(im);
+
+ return gdNumFailures();
+}