glPushMatrix();
glColor4f(0, 0.5, 0, 1);
+ glColor4f(0, 1, 0, 1);
glBegin(GL_POLYGON);
glVertex2f(-1, -1);
glVertex2f( 1, -1);
"MUL o[COLR], -H0, f[WPOS]; \n"
"MOV RC, H1; \n"
"MOV HC, H2; \n"
+ "END \n"
;
/* masked updates, defines, declarations */
"!!FP1.0\n"
"DEFINE foo = {1, 2, 3, 4}; \n"
"DEFINE foo2 = 5; \n"
- "DECLARE foo = {5, 6, 7, 8}; \n"
+ "DECLARE foo3 = {5, 6, 7, 8}; \n"
"DECLARE bar = 3; \n"
"DECLARE bar2; \n"
"DECLARE bar3 = bar; \n"
"#DECLARE bar4 = { a, b, c, d }; \n"
- "MOV o[COLR], R0; \n"
"MOV o[COLR].xy, R0; \n"
"MOV o[COLR] (NE), R0; \n"
"MOV o[COLR] (NE.wzyx), R0; \n"
"MOV RC.x (EQ), R1.x; \n"
"KIL NE; \n"
"KIL EQ.xyxy; \n"
+ "END \n"
;
/* texture instructions */
"TXP R3, f[TEX3], TEX3, RECT; \n"
"TXD R3, R2, R1, f[TEX3], TEX3, RECT; \n"
"MUL o[COLR], R0, f[COL0]; \n"
+ "END \n"
;
/* test negation, absolute value */
"MOV R0, -|-R1|; \n"
"MOV R0, -|+R1|; \n"
"MOV o[COLR], R0; \n"
+ "END \n"
;
- /* double the color */
+ /* literal constant sources */
+ static const char *prog4 =
+ "!!FP1.0\n"
+ "DEFINE Pi = 3.14159; \n"
+ "MOV R0, {1, -2, +3, 4}; \n"
+ "MOV R0, 5; \n"
+ "MOV R0, -5; \n"
+ "MOV R0, +5; \n"
+ "MOV R0, Pi; \n"
+ "MOV o[COLR], R0; \n"
+ "END \n"
+ ;
+
+ /* change the fragment color in a simple way */
static const char *prog10 =
"!!FP1.0\n"
+ "DEFINE blue = {0, 0, 1, 0};\n"
+ "DECLARE color; \n"
"MOV R0, f[COL0]; \n"
- "ADD o[COLR], R0, f[COL0]; \n"
+ "#ADD o[COLR], R0, f[COL0]; \n"
+ "#ADD o[COLR], blue, f[COL0]; \n"
+ "#ADD o[COLR], {1, 0, 0, 0}, f[COL0]; \n"
+ "ADD o[COLR], color, f[COL0]; \n"
+ "END \n"
;
GLuint progs[20];
assert(progs[1]);
assert(progs[0] != progs[1]);
+#if 0
glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, progs[0],
strlen(prog0),
(const GLubyte *) prog0);
assert(glIsProgramNV(progs[0]));
+#endif
glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, progs[1],
strlen(prog1),
assert(glIsProgramNV(progs[3]));
glBindProgramNV(GL_FRAGMENT_PROGRAM_NV, progs[3]);
+ glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, progs[4],
+ strlen(prog4),
+ (const GLubyte *) prog4);
+ assert(glIsProgramNV(progs[4]));
+ glBindProgramNV(GL_FRAGMENT_PROGRAM_NV, progs[4]);
+
/* a real program */
glLoadProgramNV(GL_FRAGMENT_PROGRAM_NV, progs[10],
assert(glIsProgramNV(progs[10]));
glBindProgramNV(GL_FRAGMENT_PROGRAM_NV, progs[10]);
+ glProgramNamedParameter4fNV(progs[10],
+ strlen("color"), (const GLubyte *) "color",
+ 1, 0, 0, 1);
+
glEnable(GL_FRAGMENT_PROGRAM_NV);
glEnable(GL_ALPHA_TEST);
glAlphaFunc(GL_ALWAYS, 0.0);