/**
* Apply the current logic operator to a span of RGBA pixels.
* We can handle horizontal runs of pixels (spans) or arrays of x/y
* pixel coordinates.
*/
void
_swrast_logicop_rgba_span(struct gl_context *ctx, struct gl_renderbuffer *rb,
SWspan *span)
{
void *rbPixels;
ASSERT(span->end < SWRAST_MAX_WIDTH);
ASSERT(span->arrayMask & SPAN_RGBA);
rbPixels = _swrast_get_dest_rgba(ctx, rb, span);
if (span->array->ChanType == GL_UNSIGNED_BYTE) {
/* treat 4*GLubyte as GLuint */
logicop_uint1(ctx, span->end,
(GLuint *) span->array->rgba8,
(const GLuint *) rbPixels, span->array->mask);
}
else if (span->array->ChanType == GL_UNSIGNED_SHORT) {
/* treat 2*GLushort as GLuint */
logicop_uint2(ctx, 2 * span->end,
(GLuint *) span->array->rgba16,
(const GLuint *) rbPixels, span->array->mask);
}
else {
logicop_uint4(ctx, 4 * span->end,
(GLuint *) span->array->attribs[VARYING_SLOT_COL0],
(const GLuint *) rbPixels, span->array->mask);
}
}
/**
* Apply the current logic operator to a span of RGBA pixels.
* We can handle horizontal runs of pixels (spans) or arrays of x/y
* pixel coordinates.
*/
void
_swrast_logicop_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb,
SWspan *span)
{
void *rbPixels;
ASSERT(span->end < MAX_WIDTH);
ASSERT(span->arrayMask & SPAN_RGBA);
ASSERT(rb->DataType == span->array->ChanType);
rbPixels = _swrast_get_dest_rgba(ctx, rb, span);
if (span->array->ChanType == GL_UNSIGNED_BYTE) {
/* treat 4*GLubyte as GLuint */
logicop_uint1(ctx, span->end,
(GLuint *) span->array->color.sz1.rgba,
(const GLuint *) rbPixels, span->array->mask);
}
else if (span->array->ChanType == GL_UNSIGNED_SHORT) {
/* treat 2*GLushort as GLuint */
logicop_uint2(ctx, 2 * span->end,
(GLuint *) span->array->color.sz2.rgba,
(const GLuint *) rbPixels, span->array->mask);
}
else {
logicop_uint4(ctx, 4 * span->end,
(GLuint *) span->array->attribs[FRAG_ATTRIB_COL0],
(const GLuint *) rbPixels, span->array->mask);
}
}
/*
* Apply the current logic operator to a span of CI pixels. This is only
* used if the device driver can't do logic ops.
*/
void
_swrast_logicop_ci_span(GLcontext *ctx, struct gl_renderbuffer *rb,
SWspan *span)
{
GLuint dest[MAX_WIDTH];
GLuint *index = span->array->index;
ASSERT(span->end < MAX_WIDTH);
ASSERT(rb->DataType == GL_UNSIGNED_INT);
/* Read dest values from frame buffer */
if (span->arrayMask & SPAN_XY) {
_swrast_get_values(ctx, rb, span->end, span->array->x, span->array->y,
dest, sizeof(GLuint));
}
else {
rb->GetRow(ctx, rb, span->end, span->x, span->y, dest);
}
logicop_uint1(ctx, span->end, index, dest, span->array->mask);
}
