GA_trap

Declaration

typedef struct {
N_uint32 y;
N_uint32 count;
N_fix32 x1;
N_fix32 x2;
N_fix32 slope1;
N_fix32 slope2;
} GA_trap

Prototype In

snap/graphics.h

Description

Parameter block for the 2D DrawTrap function. This structure is used to pass in the information about a trapezoid to be rendered by the hardware to the driver DrawTrap function.

Members

y | Starting Y coordinate
count | Number of scanlines to draw
x1 | Starting X1 coordinate in 16.16 fixed point
x2 | Starting X2 coordinate in 16.16 fixed point
slope1 | First edge slope in 16.16 fixed point format
slope2 | Second edge slope in 16.16 fixed point format

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