In overlay matte, use the luminance as a matte instead of each individual color compo...
[movit] / input.cpp
index 453620c..ae59106 100644 (file)
--- a/input.cpp
+++ b/input.cpp
 Input::Input(ImageFormat image_format, unsigned width, unsigned height)
        : image_format(image_format),
          needs_update(false),
+         finalized(false),
          use_srgb_texture_format(false),
          needs_mipmaps(false),
          width(width),
-         height(height)
+         height(height),
+         pitch(width)
 {
        register_int("use_srgb_texture_format", &use_srgb_texture_format);
        register_int("needs_mipmaps", &needs_mipmaps);
@@ -41,6 +43,9 @@ 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);
        }
@@ -50,7 +55,7 @@ void Input::finalize()
        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);
+       glBufferData(GL_PIXEL_UNPACK_BUFFER_ARB, pitch * height * bytes_per_pixel, NULL, GL_STREAM_DRAW);
        check_error();
        glBindBuffer(GL_PIXEL_UNPACK_BUFFER_ARB, 0);
        check_error();
@@ -61,14 +66,19 @@ void Input::finalize()
        check_error();
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
        check_error();
+       glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch);
+       check_error();
        // Intel/Mesa seems to have a broken glGenerateMipmap() for non-FBO textures, so do it here
        // instead of calling glGenerateMipmap().
        glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, needs_mipmaps);
        check_error();
        glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, format, GL_UNSIGNED_BYTE, NULL);
        check_error();
+       glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+       check_error();
 
        needs_update = false;
+       finalized = true;
 }
        
 void Input::set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num)
@@ -78,7 +88,7 @@ void Input::set_gl_state(GLuint glsl_program_num, const std::string& prefix, uns
                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);
+               memcpy(mapped_pbo, pixel_data, pitch * height * bytes_per_pixel);
                glUnmapBufferARB(GL_PIXEL_UNPACK_BUFFER_ARB);
                check_error();
 
@@ -87,8 +97,12 @@ void Input::set_gl_state(GLuint glsl_program_num, const std::string& prefix, uns
                check_error();
                glBindTexture(GL_TEXTURE_2D, texture_num);
                check_error();
+               glPixelStorei(GL_UNPACK_ROW_LENGTH, pitch);
+               check_error();
                glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, GL_UNSIGNED_BYTE, BUFFER_OFFSET(0));
                check_error();
+               glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+               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);