X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=pbo_frame_allocator.cpp;h=0020ba484878ee70a0a560b885a58c9493bda9e9;hb=refs%2Ftags%2F1.2.1;hp=3d4f8cf09321230a39c471164e9740fa99a92e84;hpb=3e8c584c42ae8a53e2cf335ff6c986f1b87f3f5e;p=nageru

diff --git a/pbo_frame_allocator.cpp b/pbo_frame_allocator.cpp
index 3d4f8cf..0020ba4 100644
--- a/pbo_frame_allocator.cpp
+++ b/pbo_frame_allocator.cpp
@@ -126,6 +126,35 @@ void PBOFrameAllocator::release_frame(Frame frame)
 		printf("%d bytes overflow after last (PBO) frame\n", int(frame.overflow));
 	}
 
+#if 0
+	// Poison the page. (Note that this might be bogus if you don't have an OpenGL context.)
+	memset(frame.data, 0, frame.size);
+	Userdata *userdata = (Userdata *)frame.userdata;
+	for (unsigned field = 0; field < 2; ++field) {
+		glBindTexture(GL_TEXTURE_2D, userdata->tex_y[field]);
+		check_error();
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+		check_error();
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		check_error();
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+		check_error();
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_R8, userdata->last_width[field], userdata->last_height[field], 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
+		check_error();
+
+		glBindTexture(GL_TEXTURE_2D, userdata->tex_cbcr[field]);
+		check_error();
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+		check_error();
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		check_error();
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+		check_error();
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RG8, userdata->last_width[field] / 2, userdata->last_height[field], 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
+		check_error();
+	}
+#endif
+
 	unique_lock<mutex> lock(freelist_mutex);
 	freelist.push(frame);
 	//--sumsum;