Upload textures in BGRA format instead of RGB. Somewhat faster on nVidia, somewhat...

[movit] / effect_chain.cpp

diff --git a/effect_chain.cpp b/effect_chain.cpp
index 85832db88541cfb90748dd55f8aca171a6621673..a90f5f3a64db0ffea0427cc009fc106c56eebf0a 100644 (file)
--- a/effect_chain.cpp
+++ b/effect_chain.cpp
@@ -209,11 +209,20 @@ void EffectChain::render_to_screen(unsigned char *src)
                format = GL_RGB;
        } else if (input_format.pixel_format == FORMAT_RGBA) {
                format = GL_RGBA;
+       } else if (input_format.pixel_format == FORMAT_BGR) {
+               format = GL_BGR;
+       } else if (input_format.pixel_format == FORMAT_BGRA) {
+               format = GL_BGRA;
        } else {
                assert(false);
        }
 
-       glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, format, GL_UNSIGNED_BYTE, src);
+       static bool first = true;
+       if (first) {
+               glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, format, GL_UNSIGNED_BYTE, src);
+       } else {
+               glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, GL_UNSIGNED_BYTE, src);
+       }
        check_error();
        glUniform1i(glGetUniformLocation(glsl_program_num, "input_tex"), 0);