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author | Brian Paul <brian.paul@tungstengraphics.com> | 2003-05-30 15:36:04 +0000 |
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committer | Brian Paul <brian.paul@tungstengraphics.com> | 2003-05-30 15:36:04 +0000 |
commit | f98921d344fdcab1ae603c2b2723b9cf631adcc9 (patch) | |
tree | 7c4270da4a7b252ebf620a98d92fb417bb75d528 /progs/tests | |
parent | 785774deb261512b69789682078c31c35f508baa (diff) | |
download | external_mesa3d-f98921d344fdcab1ae603c2b2723b9cf631adcc9.zip external_mesa3d-f98921d344fdcab1ae603c2b2723b9cf631adcc9.tar.gz external_mesa3d-f98921d344fdcab1ae603c2b2723b9cf631adcc9.tar.bz2 |
display both YCbCr and RGB image (Ian)
Diffstat (limited to 'progs/tests')
-rw-r--r-- | progs/tests/yuvsquare.c | 60 |
1 files changed, 54 insertions, 6 deletions
diff --git a/progs/tests/yuvsquare.c b/progs/tests/yuvsquare.c index eab255b..4945867 100644 --- a/progs/tests/yuvsquare.c +++ b/progs/tests/yuvsquare.c @@ -19,6 +19,9 @@ static GLfloat Xrot = 0, Yrot = 0, Zrot = 0; static GLint ImgWidth, ImgHeight; static GLushort *ImageYUV = NULL; +static GLubyte *ImageRGB = NULL; +static const GLuint yuvObj = 100; +static const GLuint rgbObj = 101; static void DrawObject(void) @@ -46,9 +49,20 @@ static void Display( void ) glClear( GL_COLOR_BUFFER_BIT ); glPushMatrix(); + glTranslatef( -1.1, 0.0, -15.0 ); glRotatef(Xrot, 1.0, 0.0, 0.0); glRotatef(Yrot, 0.0, 1.0, 0.0); glRotatef(Zrot, 0.0, 0.0, 1.0); + glBindTexture(GL_TEXTURE_2D, yuvObj); + DrawObject(); + glPopMatrix(); + + glPushMatrix(); + glTranslatef( 1.1, 0.0, -15.0 ); + glRotatef(Xrot, 1.0, 0.0, 0.0); + glRotatef(Yrot, 0.0, 1.0, 0.0); + glRotatef(Zrot, 0.0, 0.0, 1.0); + glBindTexture(GL_TEXTURE_2D, rgbObj); DrawObject(); glPopMatrix(); @@ -61,7 +75,7 @@ static void Reshape( int width, int height ) glViewport( 0, 0, width, height ); glMatrixMode( GL_PROJECTION ); glLoadIdentity(); - glFrustum( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 ); + glFrustum( -1.1, 1.1, -1.1, 1.1, 10.0, 100.0 ); glMatrixMode( GL_MODELVIEW ); glLoadIdentity(); glTranslatef( 0.0, 0.0, -15.0 ); @@ -113,9 +127,9 @@ static void SpecialKey( int key, int x, int y ) static void Init( int argc, char *argv[] ) { - GLuint texObj = 100; const char *file; int error; + GLenum format; if (!glutExtensionSupported("GL_MESA_ycbcr_texture")) { printf("Sorry, GL_MESA_ycbcr_texture is required\n"); @@ -124,15 +138,18 @@ static void Init( int argc, char *argv[] ) glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - glBindTexture(GL_TEXTURE_2D, texObj); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - if (argc > 1) file = argv[1]; else file = TEXTURE_FILE; + /* First load the texture as YCbCr. + */ + + glBindTexture(GL_TEXTURE_2D, yuvObj); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + ImageYUV = LoadYUVImage(file, &ImgWidth, &ImgHeight ); if (!ImageYUV) { printf("Couldn't read %s\n", TEXTURE_FILE); @@ -152,6 +169,35 @@ static void Init( int argc, char *argv[] ) glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); + + + /* Now load the texture as RGB. + */ + + glBindTexture(GL_TEXTURE_2D, rgbObj); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); + + ImageRGB = LoadRGBImage(file, &ImgWidth, &ImgHeight, &format ); + if (!ImageRGB) { + printf("Couldn't read %s\n", TEXTURE_FILE); + exit(0); + } + + printf("Image: %dx%d\n", ImgWidth, ImgHeight); + + + glTexImage2D(GL_TEXTURE_2D, 0, + format, + ImgWidth, ImgHeight, 0, + format, + GL_UNSIGNED_BYTE, ImageRGB); + + glEnable(GL_TEXTURE_2D); + + glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); + + glShadeModel(GL_FLAT); glClearColor(0.3, 0.3, 0.4, 1.0); @@ -162,6 +208,8 @@ static void Init( int argc, char *argv[] ) printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR)); printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS)); } + + printf( "Both images should appear the same.\n" ); } |