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progs/tests: add compile-time option for coloring texture corners 

When debugging wrap modes it's helpful to set each corner of the texture
image to a distinct color.
This commit is contained in:
Brian Paul 2010-02-26 12:04:53 -07:00
parent f519d3d6b6
commit b056e15662
1 changed files with 32 additions and 0 deletions
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32
progs/tests/texwrap.c
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@ -31,6 +31,7 @@
#define BORDER_TEXTURE 1
#define NO_BORDER_TEXTURE 2
#define COLOR_TEX_CORNERS 0
#define SIZE 8
static GLubyte BorderImage[SIZE+2][SIZE+2][4];
@ -281,6 +282,37 @@ static void Init( void )
for (i = 0; i < SIZE; i++) {
for (j = 0; j < SIZE; j++) {
#if COLOR_TEX_CORNERS
if (i == 0 && j == 0) {
/* lower-left texel = RED */
NoBorderImage[i][j][0] = 255;
NoBorderImage[i][j][1] = 0;
NoBorderImage[i][j][2] = 0;
NoBorderImage[i][j][3] = 255;
}
else if (i == 0 && j == SIZE-1) {
/* lower-right corner = GREEN */
NoBorderImage[i][j][0] = 0;
NoBorderImage[i][j][1] = 255;
NoBorderImage[i][j][2] = 0;
NoBorderImage[i][j][3] = 255;
}
else if (i == SIZE-1 && j == 0) {
/* upper-left corner = BLUE */
NoBorderImage[i][j][0] = 0;
NoBorderImage[i][j][1] = 0;
NoBorderImage[i][j][2] = 255;
NoBorderImage[i][j][3] = 255;
}
else if (i == SIZE-1 && j == SIZE-1) {
/* upper-right corner = YELLOW */
NoBorderImage[i][j][0] = 255;
NoBorderImage[i][j][1] = 255;
NoBorderImage[i][j][2] = 0;
NoBorderImage[i][j][3] = 255;
}
else
#endif
if ((i + j) & 1) {
/* white */
NoBorderImage[i][j][0] = 255;