diff options
| -rw-r--r-- | progs/samples/blendeq.c | 97 |
1 files changed, 45 insertions, 52 deletions
diff --git a/progs/samples/blendeq.c b/progs/samples/blendeq.c index f78afd30381..d5143ecdf5c 100644 --- a/progs/samples/blendeq.c +++ b/progs/samples/blendeq.c @@ -25,6 +25,27 @@ static int doPrint = 1; static int deltaY; GLint windW, windH; +static const struct { + GLenum mode; + const char *name; +} LogicOpModes[] = { + { GL_SET, "GL_SET" }, + { GL_COPY, "GL_COPY" }, + { GL_NOOP, "GL_NOOP" }, + { GL_AND, "GL_AND" }, + { GL_INVERT, "GL_INVERT" }, + { GL_OR, "GL_OR" }, + { GL_XOR, "GL_XOR" }, + { GL_NOR, "GL_NOR" }, + { GL_NAND, "GL_NAND" }, + { GL_OR_REVERSE, "GL_OR_REVERSE" }, + { GL_OR_INVERTED, "GL_OR_INVERTED" }, + { GL_AND_INVERTED, "GL_AND_INVERTED" }, + { 0, NULL } +}; + + + static void DrawString(const char *string) { int i; @@ -47,7 +68,7 @@ static void Reshape(int width, int height) windH = (GLint)height; glViewport(0, 0, (GLint)width, (GLint)height); - deltaY = windH /16; + deltaY = windH /20; glMatrixMode(GL_PROJECTION); glLoadIdentity(); @@ -105,7 +126,7 @@ static void Draw(void) { int stringOffset = 5, stringx = 8; int x1, x2, xleft, xright; - int i; + int i, k; (dithering) ? glEnable(GL_DITHER) : glDisable(GL_DITHER); glDisable(GL_BLEND); @@ -122,6 +143,7 @@ static void Draw(void) /* Draw labels */ glColor3f(0.8, 0.8, 0.0); i = windH - deltaY + stringOffset; + glRasterPos2f(stringx, i); i -= deltaY; DrawString("SOURCE"); glRasterPos2f(stringx, i); i -= deltaY; @@ -136,21 +158,12 @@ static void Draw(void) DrawString("reverse_subtract"); glRasterPos2f(stringx, i); i -= deltaY; DrawString("clear"); - glRasterPos2f(stringx, i); i -= deltaY; - DrawString("set"); - glRasterPos2f(stringx, i); i -= deltaY; - DrawString("copy"); - glRasterPos2f(stringx, i); i -= deltaY; - DrawString("noop"); - glRasterPos2f(stringx, i); i -= deltaY; - DrawString("and"); - glRasterPos2f(stringx, i); i -= deltaY; - DrawString("invert"); - glRasterPos2f(stringx, i); i -= deltaY; - DrawString("or"); - glRasterPos2f(stringx, i); i -= deltaY; - DrawString("xor"); + for (k = 0; LogicOpModes[k].name; k++) { + glRasterPos2f(stringx, i); + i -= deltaY; + DrawString(LogicOpModes[k].name); + } i = windH - deltaY; x1 = windW/4; @@ -193,43 +206,23 @@ static void Draw(void) glLogicOp(GL_CLEAR); glRectf(x1, i, x2, i+deltaY); - i -= deltaY; - glLogicOp(GL_SET); - glRectf(x1, i, x2, i+deltaY); - - i -= deltaY; - glLogicOp(GL_COPY); - glRectf(x1, i, x2, i+deltaY); - - i -= deltaY; - glLogicOp(GL_NOOP); - glRectf(x1, i, x2, i+deltaY); - - i -= deltaY; - glLogicOp(GL_AND); - glRectf(x1, i, x2, i+deltaY); - - i -= deltaY; - glLogicOp(GL_INVERT); - glRectf(x1, i, x2, i+deltaY); - - i -= deltaY; - glLogicOp(GL_OR); - glRectf(x1, i, x2, i+deltaY); - - i -= deltaY; - glLogicOp(GL_XOR); - glRectf(x1, i, x2, i+deltaY); - glRectf(x1, i+10, x2, i+5); + for (k = 0; LogicOpModes[k].name; k++) { + i -= deltaY; + glLogicOp(LogicOpModes[k].mode); + glRectf(x1, i, x2, i+deltaY); + if (LogicOpModes[k].mode == GL_XOR) { + glRectf(x1, i+10, x2, i+5); + } + } - if (doPrint) { - glDisable(GL_BLEND); - if (supportlogops & 2) + if (doPrint) { + glDisable(GL_BLEND); + if (supportlogops & 2) glDisable(GL_COLOR_LOGIC_OP); - glColor3f(1.0, 1.0, 1.0); - PrintColorStrings(); - } - glFlush(); + glColor3f(1.0, 1.0, 1.0); + PrintColorStrings(); + } + glFlush(); if (doubleBuffer) { glutSwapBuffers(); @@ -271,7 +264,7 @@ int main(int argc, char **argv) exit(1); } - glutInitWindowPosition(0, 0); glutInitWindowSize( 800, 400); + glutInitWindowPosition(0, 0); glutInitWindowSize( 800, 520); type = GLUT_RGB; type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE; |