-/* $Id: s_logic.c,v 1.9 2002/02/02 17:24:11 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2006 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"),
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
-#include "glheader.h"
-#include "context.h"
-#include "macros.h"
+#include "main/glheader.h"
+#include "main/context.h"
+
+#include "main/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.
+/**
+ * We do all logic ops on 4-byte GLuints.
+ * Depending on bytes per pixel, the mask array elements correspond to
+ * 1, 2 or 4 GLuints.
*/
-static void
-index_logicop( GLcontext *ctx, GLuint n, GLuint index[], const GLuint dest[],
- const GLubyte mask[] )
+#define LOGIC_OP_LOOP(MODE, MASKSTRIDE) \
+do { \
+ GLuint i; \
+ switch (MODE) { \
+ case GL_CLEAR: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = 0; \
+ } \
+ } \
+ break; \
+ case GL_SET: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = ~0; \
+ } \
+ } \
+ break; \
+ case GL_COPY: \
+ /* do nothing */ \
+ break; \
+ case GL_COPY_INVERTED: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = ~src[i]; \
+ } \
+ } \
+ break; \
+ case GL_NOOP: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_INVERT: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = ~dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_AND: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] &= dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_NAND: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = ~(src[i] & dest[i]); \
+ } \
+ } \
+ break; \
+ case GL_OR: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] |= dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_NOR: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = ~(src[i] | dest[i]); \
+ } \
+ } \
+ break; \
+ case GL_XOR: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] ^= dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_EQUIV: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = ~(src[i] ^ dest[i]); \
+ } \
+ } \
+ break; \
+ case GL_AND_REVERSE: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = src[i] & ~dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_AND_INVERTED: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = ~src[i] & dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_OR_REVERSE: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = src[i] | ~dest[i]; \
+ } \
+ } \
+ break; \
+ case GL_OR_INVERTED: \
+ for (i = 0; i < n; i++) { \
+ if (mask[i / MASKSTRIDE]) { \
+ src[i] = ~src[i] | dest[i]; \
+ } \
+ } \
+ break; \
+ default: \
+ _mesa_problem(ctx, "bad logicop mode");\
+ } \
+} while (0)
+
+
+
+static inline void
+logicop_uint1(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint 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, 1);
}
-
-/*
- * 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, const struct sw_span *span,
- GLuint index[] )
+static inline void
+logicop_uint2(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],
+ const GLubyte mask[])
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
- GLuint dest[MAX_WIDTH];
-
- ASSERT(span->end < MAX_WIDTH);
-
- /* Read dest values from frame buffer */
- if (span->arrayMask & SPAN_XY) {
- (*swrast->Driver.ReadCI32Pixels)( ctx, span->end, span->xArray,
- span->yArray, dest, span->mask );
- }
- else {
- (*swrast->Driver.ReadCI32Span)( ctx, span->end, span->x, span->y, dest );
- }
-
- index_logicop( ctx, span->end, index, dest, span->mask );
+ LOGIC_OP_LOOP(ctx->Color.LogicOp, 2);
}
-
-/*
- * Apply the current logic operator to an array 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[] )
+static inline void
+logicop_uint4(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],
+ const GLubyte mask[])
{
- 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 );
+ LOGIC_OP_LOOP(ctx->Color.LogicOp, 4);
}
-/*
- * 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_ui( 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] & 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:
- /* should never happen */
- _mesa_problem(ctx, "Bad function in rgba_logicop");
- }
-}
-
-
-/*
- * As above, but operate on GLchan values
- * Note: need to pass n = numPixels * 4.
- */
-static void
-rgba_logicop_chan( const GLcontext *ctx, GLuint n, const GLubyte mask[],
- GLchan srcPtr[], const GLchan destPtr[] )
-{
-#if CHAN_TYPE == GL_FLOAT
- GLuint *src = (GLuint *) srcPtr;
- const GLuint *dest = (const GLuint *) destPtr;
- GLuint i;
- ASSERT(sizeof(GLfloat) == sizeof(GLuint));
-#else
- GLchan *src = srcPtr;
- const GLchan *dest = destPtr;
- GLuint i;
-#endif
-
- 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] & 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:
- /* should never happen */
- _mesa_problem(ctx, "Bad function in rgba_logicop");
- }
-}
-
-
-
-/*
+/**
* 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
-_mesa_logicop_rgba_span( GLcontext *ctx, const struct sw_span *span,
- GLchan rgba[][4] )
+_swrast_logicop_rgba_span(struct gl_context *ctx, struct gl_renderbuffer *rb,
+ SWspan *span)
{
- SWcontext *swrast = SWRAST_CONTEXT(ctx);
- GLchan dest[MAX_WIDTH][4];
+ void *rbPixels;
- ASSERT(span->end < MAX_WIDTH);
- ASSERT(span->arrayMask & SPAN_RGBA);
+ assert(span->end < SWRAST_MAX_WIDTH);
+ assert(span->arrayMask & SPAN_RGBA);
- if (span->arrayMask & SPAN_XY) {
- (*swrast->Driver.ReadRGBAPixels)(ctx, span->end,
- span->xArray, span->yArray,
- dest, span->mask);
- if (SWRAST_CONTEXT(ctx)->_RasterMask & ALPHABUF_BIT) {
- _mesa_read_alpha_pixels(ctx, span->end, span->xArray, span->yArray,
- dest, span->mask);
- }
- }
- else {
- _mesa_read_rgba_span(ctx, ctx->DrawBuffer, span->end,
- span->x, span->y, dest);
- }
-
- if (sizeof(GLchan) * 4 == sizeof(GLuint)) {
- rgba_logicop_ui(ctx, span->end, span->mask,
- (GLuint *) rgba, (const GLuint *) dest);
- }
- else {
- rgba_logicop_chan(ctx, 4 * span->end, span->mask,
- (GLchan *) rgba, (const GLchan *) dest);
- }
-}
+ rbPixels = _swrast_get_dest_rgba(ctx, rb, span);
-
-
-/*
- * 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->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);
}
- if (sizeof(GLchan) * 4 == sizeof(GLuint)) {
- rgba_logicop_ui(ctx, n, mask, (GLuint *) rgba, (const GLuint *) dest);
+ 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 {
- rgba_logicop_chan(ctx, 4 * n, mask,
- (GLchan *) rgba, (const GLchan *) dest);
+ logicop_uint4(ctx, 4 * span->end,
+ (GLuint *) span->array->attribs[VARYING_SLOT_COL0],
+ (const GLuint *) rbPixels, span->array->mask);
}
}
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