JNIEXPORT void JNICALL Java_org_lwjgl_opengl_ATIFragmentShader_nglAlphaFragmentOp1ATI(JNIEnv *env, jclass clazz, jint op, jint dst, jint dstMod, jint arg1, jint arg1Rep, jint arg1Mod, jlong function_pointer) {
glAlphaFragmentOp1ATIPROC glAlphaFragmentOp1ATI = (glAlphaFragmentOp1ATIPROC)((intptr_t)function_pointer);
glAlphaFragmentOp1ATI(op, dst, dstMod, arg1, arg1Rep, arg1Mod);
}
static void Init( int argc, char *argv[] )
{
GLuint texObj[8];
GLint size, i;
const char *exten = (const char *) glGetString(GL_EXTENSIONS);
if (!strstr(exten, "GL_ATI_fragment_shader")) {
printf("Sorry, GL_ATI_fragment_shader not supported by this renderer.\n");
exit(1);
}
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &size);
printf("%d x %d max texture size\n", size, size);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
for (i = 0; i < NumUnits; i++) {
if (i < 6)
TexEnabled[i] = GL_TRUE;
else
TexEnabled[i] = GL_FALSE;
}
/* allocate two texture objects */
glGenTextures(NumUnits, texObj);
/* setup the texture objects */
for (i = 0; i < NumUnits; i++) {
glActiveTextureARB(GL_TEXTURE0_ARB + i);
glBindTexture(GL_TEXTURE_2D, texObj[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (i == 0) {
if (!LoadRGBMipmaps(TEXTURE_1_FILE, GL_RGB)) {
printf("Error: couldn't load texture image\n");
exit(1);
}
}
else if (i == 1) {
if (!LoadRGBMipmaps(TEXTURE_2_FILE, GL_RGB)) {
printf("Error: couldn't load texture image\n");
exit(1);
}
}
else {
/* checker */
GLubyte image[8][8][3];
GLint i, j;
for (i = 0; i < 8; i++) {
for (j = 0; j < 8; j++) {
if ((i + j) & 1) {
image[i][j][0] = 50;
image[i][j][1] = 50;
image[i][j][2] = 50;
}
else {
image[i][j][0] = 25;
image[i][j][1] = 25;
image[i][j][2] = 25;
}
}
}
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 8, 8, 0,
GL_RGB, GL_UNSIGNED_BYTE, (GLvoid *) image);
}
/* Bind texObj[i] to ith texture unit */
/* if (i < 2)
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
else
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);*/
if (TexEnabled[i])
glEnable(GL_TEXTURE_2D);
}
boringshaderID = glGenFragmentShadersATI(1);
boring2passID = glGenFragmentShadersATI(1);
if (boring2passID == 0)
{
fprintf(stderr, "couldn't get frag shader id\n");
exit(1);
}
glBindFragmentShaderATI(boringshaderID);
/* maybe not the most creative shader but at least I know how it should look like! */
glBeginFragmentShaderATI();
glSampleMapATI(GL_REG_0_ATI, GL_TEXTURE0_ARB, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_1_ATI, GL_TEXTURE1_ARB, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_2_ATI, GL_TEXTURE2_ARB, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_3_ATI, GL_TEXTURE3_ARB, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_4_ATI, GL_TEXTURE4_ARB, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_5_ATI, GL_TEXTURE5_ARB, GL_SWIZZLE_STR_ATI);
glColorFragmentOp2ATI(GL_MUL_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_PRIMARY_COLOR, GL_NONE, GL_NONE);
glAlphaFragmentOp1ATI(GL_MOV_ATI,
GL_REG_0_ATI, GL_NONE,
GL_PRIMARY_COLOR, GL_NONE, GL_NONE);
glColorFragmentOp3ATI(GL_MAD_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_REG_1_ATI, GL_NONE, GL_NONE,
GL_REG_2_ATI, GL_NONE, GL_NONE);
glColorFragmentOp2ATI(GL_ADD_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_REG_3_ATI, GL_NONE, GL_NONE);
glColorFragmentOp2ATI(GL_ADD_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_REG_4_ATI, GL_NONE, GL_NONE);
glColorFragmentOp2ATI(GL_ADD_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_REG_5_ATI, GL_NONE, GL_NONE);
glEndFragmentShaderATI();
/* mathematically equivalent to first shader but using 2 passes together with
some tex coord rerouting */
glBindFragmentShaderATI(boring2passID);
glBeginFragmentShaderATI();
glPassTexCoordATI(GL_REG_1_ATI, GL_TEXTURE0_ARB, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_2_ATI, GL_TEXTURE2_ARB, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_3_ATI, GL_TEXTURE3_ARB, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_4_ATI, GL_TEXTURE4_ARB, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_5_ATI, GL_TEXTURE5_ARB, GL_SWIZZLE_STR_ATI);
glColorFragmentOp2ATI(GL_ADD_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_2_ATI, GL_NONE, GL_NONE,
GL_REG_3_ATI, GL_NONE, GL_NONE);
glColorFragmentOp2ATI(GL_ADD_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_REG_4_ATI, GL_NONE, GL_NONE);
glColorFragmentOp2ATI(GL_ADD_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_REG_5_ATI, GL_NONE, GL_NONE);
/* not really a dependant read */
glSampleMapATI(GL_REG_0_ATI, GL_REG_1_ATI, GL_SWIZZLE_STR_ATI);
glSampleMapATI(GL_REG_1_ATI, GL_TEXTURE1_ARB, GL_SWIZZLE_STR_ATI);
glPassTexCoordATI(GL_REG_5_ATI, GL_REG_0_ATI, GL_SWIZZLE_STR_ATI);
glColorFragmentOp2ATI(GL_MUL_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_PRIMARY_COLOR, GL_NONE, GL_NONE);
glAlphaFragmentOp1ATI(GL_MOV_ATI,
GL_REG_0_ATI, GL_NONE,
GL_PRIMARY_COLOR, GL_NONE, GL_NONE);
glColorFragmentOp3ATI(GL_MAD_ATI,
GL_REG_0_ATI, GL_NONE, GL_SATURATE_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_REG_1_ATI, GL_NONE, GL_NONE,
GL_REG_5_ATI, GL_NONE, GL_NONE);
/* in principle we're finished here, but to test a bit more
we do some fun with dot ops, replication et al. */
glSetFragmentShaderConstantATI(GL_CON_3_ATI, shaderconstant);
glColorFragmentOp2ATI(GL_DOT4_ATI,
GL_REG_3_ATI, GL_GREEN_BIT_ATI, GL_EIGHTH_BIT_ATI,
GL_ZERO, GL_NONE, GL_COMP_BIT_ATI | GL_NEGATE_BIT_ATI,
GL_CON_3_ATI, GL_RED, GL_2X_BIT_ATI);
/* those args must get ignored, except dstReg */
glAlphaFragmentOp2ATI(GL_DOT4_ATI,
GL_REG_4_ATI, GL_NONE,
GL_ZERO, GL_NONE, GL_NONE,
GL_ZERO, GL_NONE, GL_NONE);
/* -> reg3 g = reg4 alpha = -0.5 */
glAlphaFragmentOp2ATI(GL_ADD_ATI,
GL_REG_5_ATI, GL_NONE,
GL_REG_3_ATI, GL_GREEN, GL_NONE,
GL_REG_4_ATI, GL_NONE, GL_NONE);
/* -> reg5 a = -1 */
glColorFragmentOp3ATI(GL_DOT2_ADD_ATI,
GL_REG_4_ATI, GL_BLUE_BIT_ATI, GL_HALF_BIT_ATI,
GL_REG_5_ATI, GL_ALPHA, GL_NEGATE_BIT_ATI,
GL_ONE, GL_NONE, GL_BIAS_BIT_ATI,
GL_ONE, GL_ALPHA, GL_2X_BIT_ATI | GL_NEGATE_BIT_ATI);
/* -> reg 4 b = -0.5 */
glColorFragmentOp2ATI(GL_MUL_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE,
GL_REG_4_ATI, GL_BLUE, GL_NEGATE_BIT_ATI | GL_2X_BIT_ATI,
GL_REG_0_ATI, GL_NONE, GL_NONE);
glEndFragmentShaderATI();
glBindFragmentShaderATI(boringshaderID);
glEnable(GL_FRAGMENT_SHADER_ATI);
glShadeModel(GL_FLAT);
glClearColor(0.3, 0.3, 0.4, 1.0);
if (argc > 1 && strcmp(argv[1], "-info")==0) {
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
}
printf("output should be identical with both shaders to multiarb demo when 6 textures are enabled\n");
}