X-Git-Url: https://git.sesse.net/?p=movit;a=blobdiff_plain;f=input.cpp;h=cf0210c8fcfca822ff1d5b8d463ed9069dabf369;hp=1e460f09606d89bcb15064ed36b535b869806146;hb=ad0e48a8b82a679f1d2836254ef33320e7162733;hpb=d3cf1194740dbecde06f5e721a7e1910437a7666

diff --git a/input.cpp b/input.cpp
index 1e460f0..cf0210c 100644
--- a/input.cpp
+++ b/input.cpp
@@ -41,12 +41,17 @@ void Input::finalize()
 	} else if (image_format.pixel_format == FORMAT_BGRA) {
 		format = GL_BGRA;
 		bytes_per_pixel = 4;
+	} else if (image_format.pixel_format == FORMAT_GRAYSCALE) {
+		format = GL_LUMINANCE;
+		bytes_per_pixel = 1;
 	} else {
 		assert(false);
 	}
 
 	// Create PBO to hold the texture holding the input image, and then the texture itself.
-	glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 2);
+	glGenBuffers(1, &pbo);
+	check_error();
+	glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
 	check_error();
 	glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, width * height * bytes_per_pixel, NULL, GL_STREAM_DRAW);
 	check_error();
@@ -73,7 +78,7 @@ void Input::set_gl_state(GLuint glsl_program_num, const std::string& prefix, uns
 {
 	if (needs_update) {
 		// Copy the pixel data into the PBO.
-		glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 2);
+		glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, pbo);
 		check_error();
 		void *mapped_pbo = glMapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB, GL_WRITE_ONLY);
 		memcpy(mapped_pbo, pixel_data, width * height * bytes_per_pixel);