/*
* Mesa 3-D graphics library
- * Version: 6.3
*
- * Copyright (C) 1999-2005 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 "imports.h"
-#include "macros.h"
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/imports.h"
+#include "main/macros.h"
#include "s_context.h"
#include "s_logic.h"
#include "s_span.h"
-#define LOGIC_OP_LOOP(MODE) \
+/**
+ * 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.
+ */
+#define LOGIC_OP_LOOP(MODE, MASKSTRIDE) \
do { \
GLuint i; \
switch (MODE) { \
case GL_CLEAR: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = 0; \
} \
} \
break; \
case GL_SET: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = ~0; \
} \
} \
break; \
case GL_COPY_INVERTED: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = ~src[i]; \
} \
} \
break; \
case GL_NOOP: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = dest[i]; \
} \
} \
break; \
case GL_INVERT: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = ~dest[i]; \
} \
} \
break; \
case GL_AND: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] &= dest[i]; \
} \
} \
break; \
case GL_NAND: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = ~(src[i] & dest[i]); \
} \
} \
break; \
case GL_OR: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] |= dest[i]; \
} \
} \
break; \
case GL_NOR: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = ~(src[i] | dest[i]); \
} \
} \
break; \
case GL_XOR: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] ^= dest[i]; \
} \
} \
break; \
case GL_EQUIV: \
for (i = 0; i < n; i++) { \
- if (mask[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]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = src[i] & ~dest[i]; \
} \
} \
break; \
case GL_AND_INVERTED: \
for (i = 0; i < n; i++) { \
- if (mask[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]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = src[i] | ~dest[i]; \
} \
} \
break; \
case GL_OR_INVERTED: \
for (i = 0; i < n; i++) { \
- if (mask[i]) { \
+ if (mask[i / MASKSTRIDE]) { \
src[i] = ~src[i] | dest[i]; \
} \
} \
-static void
-logicop_ubyte(GLcontext *ctx, GLuint n, GLubyte src[], const GLubyte dest[],
+static inline void
+logicop_uint1(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],
const GLubyte mask[])
{
- LOGIC_OP_LOOP(ctx->Color.LogicOp);
+ LOGIC_OP_LOOP(ctx->Color.LogicOp, 1);
}
-static void
-logicop_ushort(GLcontext *ctx, GLuint n, GLushort src[], const GLushort dest[],
- const GLubyte mask[])
+static inline void
+logicop_uint2(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],
+ const GLubyte mask[])
{
- LOGIC_OP_LOOP(ctx->Color.LogicOp);
+ LOGIC_OP_LOOP(ctx->Color.LogicOp, 2);
}
-static void
-logicop_uint(GLcontext *ctx, GLuint n, GLuint src[], const GLuint dest[],
- const GLubyte mask[])
+static inline void
+logicop_uint4(struct gl_context *ctx, GLuint n, GLuint src[], const GLuint dest[],
+ const GLubyte mask[])
{
- LOGIC_OP_LOOP(ctx->Color.LogicOp);
+ LOGIC_OP_LOOP(ctx->Color.LogicOp, 4);
}
-/*
- * 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,
- const struct sw_span *span, GLuint index[])
-{
- GLuint dest[MAX_WIDTH];
-
- 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_uint(ctx, span->end, index, dest, 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,
- const struct sw_span *span, GLchan rgba[][4])
+_swrast_logicop_rgba_span(struct gl_context *ctx, struct gl_renderbuffer *rb,
+ SWspan *span)
{
- GLchan dest[MAX_WIDTH][4];
+ void *rbPixels;
+
+ assert(span->end < SWRAST_MAX_WIDTH);
+ assert(span->arrayMask & SPAN_RGBA);
- ASSERT(span->end < MAX_WIDTH);
- ASSERT(span->arrayMask & SPAN_RGBA);
- ASSERT(rb->DataType == CHAN_TYPE);
+ rbPixels = _swrast_get_dest_rgba(ctx, rb, span);
- if (span->arrayMask & SPAN_XY) {
- _swrast_get_values(ctx, rb, span->end, span->array->x, span->array->y,
- dest, 4 * sizeof(GLchan));
+ 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 {
- _swrast_read_rgba_span(ctx, rb, span->end, span->x, span->y, dest);
+ logicop_uint4(ctx, 4 * span->end,
+ (GLuint *) span->array->attribs[VARYING_SLOT_COL0],
+ (const GLuint *) rbPixels, span->array->mask);
}
-
- /* 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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