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TINYGL: Implemented alpha interpolation in triangle rasterization routine.

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This commit is contained in:
Stefano Musumeci 2014-06-19 17:30:28 +02:00
parent 03072c4b7b
commit 63fd685589
13 changed files with 320 additions and 163 deletions
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6
graphics/tinygl/api.cpp
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@ -47,7 +47,7 @@ void tglNormal3fv(float *v) {
// glColor
void tglColor4f(float r, float g, float b, float a) {
TinyGL::GLParam p[8];
TinyGL::GLParam p[9];
p[0].op = TinyGL::OP_Color;
p[1].f = r;
@ -58,11 +58,12 @@ void tglColor4f(float r, float g, float b, float a) {
p[5].ui = (unsigned int)(r * (ZB_POINT_RED_MAX - ZB_POINT_RED_MIN) + ZB_POINT_RED_MIN);
p[6].ui = (unsigned int)(g * (ZB_POINT_GREEN_MAX - ZB_POINT_GREEN_MIN) + ZB_POINT_GREEN_MIN);
p[7].ui = (unsigned int)(b * (ZB_POINT_BLUE_MAX - ZB_POINT_BLUE_MIN) + ZB_POINT_BLUE_MIN);
p[8].ui = (unsigned int)(a * (ZB_POINT_ALPHA_MAX - ZB_POINT_ALPHA_MIN) + ZB_POINT_ALPHA_MIN);
gl_add_op(p);
}
void tglColor4fv(float *v) {
TinyGL::GLParam p[8];
TinyGL::GLParam p[9];
p[0].op = TinyGL::OP_Color;
p[1].f = v[0];
@ -73,6 +74,7 @@ void tglColor4fv(float *v) {
p[5].ui = (unsigned int)(v[0] * (ZB_POINT_RED_MAX - ZB_POINT_RED_MIN) + ZB_POINT_RED_MIN);
p[6].ui = (unsigned int)(v[1] * (ZB_POINT_GREEN_MAX - ZB_POINT_GREEN_MIN) + ZB_POINT_GREEN_MIN);
p[7].ui = (unsigned int)(v[2] * (ZB_POINT_BLUE_MAX - ZB_POINT_BLUE_MIN) + ZB_POINT_BLUE_MIN);
p[8].ui = (unsigned int)(v[3] * (ZB_POINT_ALPHA_MAX - ZB_POINT_ALPHA_MIN) + ZB_POINT_ALPHA_MIN);
TinyGL::gl_add_op(p);
}