add tests for layer effects

3 files changed, 70 insertions, 0 deletions

diff --git a/tests/gdimagesetpixel/CMakeLists.txt b/tests/gdimagesetpixel/CMakeLists.txt
index e5b9b2a..907616d 100644
--- a/tests/gdimagesetpixel/CMakeLists.txt
+++ b/tests/gdimagesetpixel/CMakeLists.txt
@@ -1,5 +1,7 @@
 SET(TESTS_FILES
 	bug00186
+	gdeffectoverlay
+	gdeffectmultiply
 )
 
 FOREACH(test_name ${TESTS_FILES})
diff --git a/tests/gdimagesetpixel/gdeffectmultiply.c b/tests/gdimagesetpixel/gdeffectmultiply.c
new file mode 100644
index 0000000..3d8da7b
--- /dev/null
+++ b/tests/gdimagesetpixel/gdeffectmultiply.c
@@ -0,0 +1,33 @@
+#include "gd.h"
+#include "gdtest.h"
+
+int main()
+{
+	gdImagePtr im;
+	int x, y, c;
+	int r=0;
+
+
+	im = gdImageCreateTrueColor(256, 256);
+	gdImageAlphaBlending( im, gdEffectReplace );
+	for (x=0; x<256; x++) {
+		for (y=0; y<256; y++) {
+			c = (y/2 << 24) + (x << 16) + (x << 8) + x;
+			gdImageSetPixel(im, x, y, c );
+		}
+	}
+	gdImageAlphaBlending( im, gdEffectMultiply );
+	gdImageFilledRectangle(im, 0, 0, 255, 255, 0xff7f00);
+
+	if (gdTrueColorGetGreen(gdImageGetPixel(im, 0, 128)) != 0x40) {
+		r = 1;
+	}
+	if (gdTrueColorGetGreen(gdImageGetPixel(im, 128, 128)) != 0x5f) {
+		r = 1;
+	}
+	if (gdTrueColorGetGreen(gdImageGetPixel(im, 255, 128)) != 0x7f) {
+		r = 1;
+	}
+	gdImageDestroy(im);
+	return r;
+}
diff --git a/tests/gdimagesetpixel/gdeffectoverlay.c b/tests/gdimagesetpixel/gdeffectoverlay.c
new file mode 100644
index 0000000..5e42547
--- /dev/null
+++ b/tests/gdimagesetpixel/gdeffectoverlay.c
@@ -0,0 +1,35 @@
+#include "gd.h"
+#include "gdtest.h"
+
+int main()
+{
+	gdImagePtr im;
+	int x, y, c;
+	FILE *out;
+	char path[1024];
+	int r=0;
+
+
+	im = gdImageCreateTrueColor(256, 256);
+	gdImageAlphaBlending( im, gdEffectReplace );
+	for (x=0; x<256; x++) {
+		for (y=0; y<256; y++) {
+			c = (y/2 << 24) + (x << 16) + (x << 8) + x;
+			gdImageSetPixel(im, x, y, c );
+		}
+	}
+	gdImageAlphaBlending( im, gdEffectOverlay );
+	gdImageFilledRectangle(im, 0, 0, 255, 255, 0xff7f00);
+
+	if (gdTrueColorGetGreen(gdImageGetPixel(im, 0, 128)) != 0x00) {
+		r = 1;
+	}
+	if (gdTrueColorGetGreen(gdImageGetPixel(im, 128, 128)) != 0x80) {
+		r = 1;
+	}
+	if (gdTrueColorGetGreen(gdImageGetPixel(im, 255, 128)) != 0xff) {
+		r = 1;
+	}
+	gdImageDestroy(im);
+	return r;
+}