-/* $Id: s_logic.c,v 1.3 2001/02/13 23:50:25 brianp Exp $ */
+/* $Id: s_logic.c,v 1.7 2001/05/10 16:54:12 brianp Exp $ */
/*
* Mesa 3-D graphics library
* Version: 3.5
- *
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
- *
+ *
+ * Copyright (C) 1999-2001 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"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
- *
+ *
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of 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
}
break;
default:
- gl_problem(ctx, "bad mode in index_logic()");
+ _mesa_problem(ctx, "bad mode in index_logic()");
}
}
_mesa_logicop_ci_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
GLuint index[], const GLubyte mask[] )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLuint dest[MAX_WIDTH];
/* Read dest values from frame buffer */
- (*ctx->Driver.ReadCI32Span)( ctx, n, x, y, dest );
+ (*swrast->Driver.ReadCI32Span)( ctx, n, x, y, dest );
index_logicop( ctx, n, index, dest, mask );
}
GLuint n, const GLint x[], const GLint y[],
GLuint index[], const GLubyte mask[] )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLuint dest[PB_SIZE];
/* Read dest values from frame buffer */
- (*ctx->Driver.ReadCI32Pixels)( ctx, n, x, y, dest, mask );
+ (*swrast->Driver.ReadCI32Pixels)( ctx, n, x, y, dest, mask );
index_logicop( ctx, n, index, dest, mask );
}
* 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[] )
+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 src[], const GLchan dest[] )
{
GLuint i;
switch (ctx->Color.LogicOp) {
case GL_NAND:
for (i=0;i<n;i++) {
if (mask[i]) {
- src[i] = ~(src[i] & src[i]);
+ src[i] = ~(src[i] & dest[i]);
}
}
break;
break;
default:
/* should never happen */
- gl_problem(ctx, "Bad function in rgba_logicop");
+ _mesa_problem(ctx, "Bad function in rgba_logicop");
}
}
GLchan rgba[][4], const GLubyte mask[] )
{
GLchan dest[MAX_WIDTH][4];
- gl_read_rgba_span( ctx, ctx->DrawBuffer, n, x, y, dest );
- rgba_logicop( ctx, n, mask, (GLuint *) rgba, (const GLuint *) dest );
+ _mesa_read_rgba_span( ctx, ctx->DrawBuffer, n, x, y, dest );
+ if (sizeof(GLchan) * 4 == sizeof(GLuint)) {
+ rgba_logicop_ui(ctx, n, mask, (GLuint *) rgba, (const GLuint *) dest);
+ }
+ else {
+ rgba_logicop_chan(ctx, 4 * n, mask,
+ (GLchan *) rgba, (const GLchan *) dest);
+ }
}
GLuint n, const GLint x[], const GLint y[],
GLchan rgba[][4], const GLubyte mask[] )
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
GLchan dest[PB_SIZE][4];
- (*ctx->Driver.ReadRGBAPixels)( ctx, n, x, y, dest, mask );
+ (*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 );
}
- rgba_logicop( ctx, n, mask, (GLuint *) rgba, (const GLuint *) dest );
+ if (sizeof(GLchan) * 4 == sizeof(GLuint)) {
+ rgba_logicop_ui(ctx, n, mask, (GLuint *) rgba, (const GLuint *) dest);
+ }
+ else {
+ rgba_logicop_chan(ctx, 4 * n, mask,
+ (GLchan *) rgba, (const GLchan *) dest);
+ }
}
projects / mesa.git / blobdiff