X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=test_util.cpp;h=a3ccb5c5f04cebcd3c804c294e95e93d7b886a59;hp=8f812117858c12475b364e08f9eed797a96e73fc;hb=refs%2Fheads%2Fepoxy;hpb=255f65578a7a20538a3d240c408c89452469e80a

diff --git a/test_util.cpp b/test_util.cpp
index 8f81211..a3ccb5c 100644
--- a/test_util.cpp
+++ b/test_util.cpp
@@ -143,17 +143,21 @@ void EffectChainTester::run(float *out_data, GLenum format, Colorspace color_spa
 
 	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 	check_error();
-	if (!epoxy_is_desktop_gl() && (format == GL_RED || format == GL_BLUE)) {
+	if (!epoxy_is_desktop_gl() && (format == GL_RED || format == GL_BLUE || format == GL_ALPHA)) {
 		// GLES will only read GL_RGBA.
 		float *temp = new float[width * height * 4];
 		glReadPixels(0, 0, width, height, GL_RGBA, GL_FLOAT, temp);
 		check_error();
-		if (format == GL_BLUE) {
-			for (int i = 0; i < width * height; ++i) {
+		if (format == GL_ALPHA) {
+			for (unsigned i = 0; i < width * height; ++i) {
+				out_data[i] = temp[i * 4 + 3];
+			}
+		} else if (format == GL_BLUE) {
+			for (unsigned i = 0; i < width * height; ++i) {
 				out_data[i] = temp[i * 4 + 2];
 			}
 		} else {
-			for (int i = 0; i < width * height; ++i) {
+			for (unsigned i = 0; i < width * height; ++i) {
 				out_data[i] = temp[i * 4];
 			}
 		}
@@ -180,17 +184,21 @@ void EffectChainTester::run(unsigned char *out_data, GLenum format, Colorspace c
 
 	glBindFramebuffer(GL_FRAMEBUFFER, fbo);
 	check_error();
-	if (!epoxy_is_desktop_gl() && (format == GL_RED || format == GL_BLUE)) {
+	if (!epoxy_is_desktop_gl() && (format == GL_RED || format == GL_BLUE || format == GL_ALPHA)) {
 		// GLES will only read GL_RGBA.
 		unsigned char *temp = new unsigned char[width * height * 4];
 		glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, temp);
 		check_error();
-		if (format == GL_BLUE) {
-			for (int i = 0; i < width * height; ++i) {
+		if (format == GL_ALPHA) {
+			for (unsigned i = 0; i < width * height; ++i) {
+				out_data[i] = temp[i * 4 + 3];
+			}
+		} else if (format == GL_BLUE) {
+			for (unsigned i = 0; i < width * height; ++i) {
 				out_data[i] = temp[i * 4 + 2];
 			}
 		} else {
-			for (int i = 0; i < width * height; ++i) {
+			for (unsigned i = 0; i < width * height; ++i) {
 				out_data[i] = temp[i * 4];
 			}
 		}