-/* $Id: s_logic.c,v 1.6 2001/03/19 02:25:36 keithw Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 6.3
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
#include "glheader.h"
#include "context.h"
+#include "imports.h"
#include "macros.h"
-#include "s_alphabuf.h"
#include "s_context.h"
#include "s_logic.h"
-#include "s_pb.h"
#include "s_span.h"
-
-/*
- * Apply logic op to array of CI pixels.
- */
-static void index_logicop( GLcontext *ctx, GLuint n,
- GLuint index[], const GLuint dest[],
- const GLubyte mask[] )
+#define LOGIC_OP_LOOP(MODE) \
+do { \
+ GLuint i; \
+ switch (MODE) { \
+ case GL_CLEAR: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = 0; \
+ } \
+ } \
+ break; \
+ case GL_SET: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = ~0; \
+ } \
+ } \
+ break; \
+ case GL_COPY: \
+ /* do nothing */ \
+ break; \
+ case GL_COPY_INVERTED: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = ~src[i]; \
+ } \
+ } \
+ break; \
+ case GL_NOOP: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_INVERT: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = ~dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_AND: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] &= dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_NAND: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = ~(src[i] & dest[i]); \
+ } \
+ } \
+ break; \
+ case GL_OR: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] |= dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_NOR: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = ~(src[i] | dest[i]); \
+ } \
+ } \
+ break; \
+ case GL_XOR: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] ^= dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_EQUIV: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = ~(src[i] ^ dest[i]); \
+ } \
+ } \
+ break; \
+ case GL_AND_REVERSE: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = src[i] & ~dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_AND_INVERTED: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = ~src[i] & dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_OR_REVERSE: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = src[i] | ~dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_OR_INVERTED: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i]) { \
+ src[i] = ~src[i] | dest[i]; \
+ } \
+ } \
+ break; \
+ default: \
+ _mesa_problem(ctx, "bad logicop mode");\
+ } \
+} while (0)
+
+
+
+static void
+logicop_ubyte(GLcontext *ctx, GLuint n, GLubyte src[], const GLubyte dest[],
+ const GLubyte mask[])
{
- GLuint i;
- switch (ctx->Color.LogicOp) {
- case GL_CLEAR:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = 0;
- }
- }
- break;
- case GL_SET:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = ~0;
- }
- }
- break;
- case GL_COPY:
- /* do nothing */
- break;
- case GL_COPY_INVERTED:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = ~index[i];
- }
- }
- break;
- case GL_NOOP:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = dest[i];
- }
- }
- break;
- case GL_INVERT:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = ~dest[i];
- }
- }
- break;
- case GL_AND:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] &= dest[i];
- }
- }
- break;
- case GL_NAND:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = ~(index[i] & dest[i]);
- }
- }
- break;
- case GL_OR:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] |= dest[i];
- }
- }
- break;
- case GL_NOR:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = ~(index[i] | dest[i]);
- }
- }
- break;
- case GL_XOR:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] ^= dest[i];
- }
- }
- break;
- case GL_EQUIV:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = ~(index[i] ^ dest[i]);
- }
- }
- break;
- case GL_AND_REVERSE:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = index[i] & ~dest[i];
- }
- }
- break;
- case GL_AND_INVERTED:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = ~index[i] & dest[i];
- }
- }
- break;
- case GL_OR_REVERSE:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = index[i] | ~dest[i];
- }
- }
- break;
- case GL_OR_INVERTED:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- index[i] = ~index[i] | dest[i];
- }
- }
- break;
- default:
- _mesa_problem(ctx, "bad mode in index_logic()");
- }
+ LOGIC_OP_LOOP(ctx->Color.LogicOp);
}
+static void
+logicop_ushort(GLcontext *ctx, GLuint n, GLushort src[], const GLushort dest[],
+ const GLubyte mask[])
+{
+ LOGIC_OP_LOOP(ctx->Color.LogicOp);
+}
-/*
- * 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
-_mesa_logicop_ci_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
- GLuint index[], const GLubyte mask[] )
+
+static void
+logicop_uint(GLcontext *ctx, GLuint n, GLuint src[], const GLuint dest[],
+ const GLubyte mask[])
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
- GLuint dest[MAX_WIDTH];
- /* Read dest values from frame buffer */
- (*swrast->Driver.ReadCI32Span)( ctx, n, x, y, dest );
- index_logicop( ctx, n, index, dest, mask );
+ LOGIC_OP_LOOP(ctx->Color.LogicOp);
}
/*
- * Apply the current logic operator to an array of CI pixels. This is only
+ * 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
-_mesa_logicop_ci_pixels( GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLuint index[], const GLubyte mask[] )
+_swrast_logicop_ci_span(GLcontext *ctx, struct gl_renderbuffer *rb,
+ const struct sw_span *span, GLuint index[])
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
- GLuint dest[PB_SIZE];
- /* Read dest values from frame buffer */
- (*swrast->Driver.ReadCI32Pixels)( ctx, n, x, y, dest, mask );
- index_logicop( ctx, n, index, dest, mask );
-}
-
+ GLuint dest[MAX_WIDTH];
+ ASSERT(span->end < MAX_WIDTH);
+ ASSERT(rb->DataType == GL_UNSIGNED_INT);
-/*
- * Apply logic operator to rgba pixels.
- * Input: ctx - the context
- * n - number of pixels
- * mask - pixel mask array
- * In/Out: src - incoming pixels which will be modified
- * Input: dest - frame buffer values
- *
- * Note: Since the R, G, B, and A channels are all treated the same we
- * process them as 4-byte GLuints instead of four GLubytes.
- */
-static void rgba_logicop( const GLcontext *ctx, GLuint n,
- const GLubyte mask[],
- GLuint src[], const GLuint dest[] )
-{
- GLuint i;
- switch (ctx->Color.LogicOp) {
- case GL_CLEAR:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = 0;
- }
- }
- break;
- case GL_SET:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = ~0;
- }
- }
- break;
- case GL_COPY:
- /* do nothing */
- break;
- case GL_COPY_INVERTED:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = ~src[i];
- }
- }
- break;
- case GL_NOOP:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = dest[i];
- }
- }
- break;
- case GL_INVERT:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = ~dest[i];
- }
- }
- break;
- case GL_AND:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] &= dest[i];
- }
- }
- break;
- case GL_NAND:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = ~(src[i] & src[i]);
- }
- }
- break;
- case GL_OR:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i]|= dest[i];
- }
- }
- break;
- case GL_NOR:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = ~(src[i] | dest[i]);
- }
- }
- break;
- case GL_XOR:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] ^= dest[i];
- }
- }
- break;
- case GL_EQUIV:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = ~(src[i] ^ dest[i]);
- }
- }
- break;
- case GL_AND_REVERSE:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = src[i] & ~dest[i];
- }
- }
- break;
- case GL_AND_INVERTED:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = ~src[i] & dest[i];
- }
- }
- break;
- case GL_OR_REVERSE:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = src[i] | ~dest[i];
- }
- }
- break;
- case GL_OR_INVERTED:
- for (i=0;i<n;i++) {
- if (mask[i]) {
- src[i] = ~src[i] | dest[i];
- }
- }
- break;
- default:
- /* should never happen */
- _mesa_problem(ctx, "Bad function in rgba_logicop");
+ /* 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_uint(ctx, span->end, index, dest, span->array->mask);
+}
-/*
+/**
* Apply the current logic operator to a span of RGBA pixels.
- * This is only used if the device driver can't do logic ops.
+ * We can handle horizontal runs of pixels (spans) or arrays of x/y
+ * pixel coordinates.
*/
void
-_mesa_logicop_rgba_span( GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- GLchan rgba[][4], const GLubyte mask[] )
+_swrast_logicop_rgba_span(GLcontext *ctx, struct gl_renderbuffer *rb,
+ const struct sw_span *span, GLchan rgba[][4])
{
GLchan dest[MAX_WIDTH][4];
- _mesa_read_rgba_span( ctx, ctx->DrawBuffer, n, x, y, dest );
- rgba_logicop( ctx, n, mask, (GLuint *) rgba, (const GLuint *) dest );
-}
-
+ ASSERT(span->end < MAX_WIDTH);
+ ASSERT(span->arrayMask & SPAN_RGBA);
+ ASSERT(rb->DataType == CHAN_TYPE);
-/*
- * Apply the current logic operator to an array of RGBA pixels.
- * This is only used if the device driver can't do logic ops.
- */
-void
-_mesa_logicop_rgba_pixels( GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLchan rgba[][4], const GLubyte mask[] )
-{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
- GLchan dest[PB_SIZE][4];
- (*swrast->Driver.ReadRGBAPixels)( ctx, n, x, y, dest, mask );
- if (SWRAST_CONTEXT(ctx)->_RasterMask & ALPHABUF_BIT) {
- _mesa_read_alpha_pixels( ctx, n, x, y, dest, mask );
+ if (span->arrayMask & SPAN_XY) {
+ _swrast_get_values(ctx, rb, span->end, span->array->x, span->array->y,
+ dest, 4 * sizeof(GLchan));
}
- rgba_logicop( ctx, n, mask, (GLuint *) rgba, (const GLuint *) dest );
+ else {
+ _swrast_read_rgba_span(ctx, rb, span->end, span->x, span->y, dest);
+ }
+
+ /* XXX make this a runtime test */
+#if CHAN_TYPE == GL_UNSIGNED_BYTE
+ /* treat 4*GLubyte as GLuint */
+ logicop_uint(ctx, span->end, (GLuint *) rgba,
+ (const GLuint *) dest, span->array->mask);
+#elif CHAN_TYPE == GL_UNSIGNED_SHORT
+ logicop_ushort(ctx, 4 * span->end, (GLushort *) rgba,
+ (const GLushort *) dest, span->array->mask);
+#elif CHAN_TYPE == GL_FLOAT
+ logicop_uint(ctx, 4 * span->end, (GLuint *) rgba,
+ (const GLuint *) dest, span->array->mask);
+#endif
+ (void) logicop_ubyte;
+ (void) logicop_ushort;
+ (void) logicop_uint;
}
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