/*
* Mesa 3-D graphics library
- * Version: 6.5
+ * Version: 6.5.2
*
- * 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"),
*/
-#include "glheader.h"
-#include "context.h"
-#include "macros.h"
-#include "imports.h"
-#include "fbobject.h"
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/macros.h"
+#include "main/imports.h"
+#include "main/fbobject.h"
#include "s_accum.h"
#include "s_context.h"
#include "s_span.h"
+/* XXX this would have to change for accum buffers with more or less
+ * than 16 bits per color channel.
+ */
#define ACCUM_SCALE16 32767.0
#endif
+#if FEATURE_accum
+
+
/**
* This is called when we fall out of optimized/unscaled accum buffer mode.
* That is, we convert each unscaled accum buffer value into a scaled value
return;
}
- assert(rb);
+ if (!rb || !rb->Data)
+ return;
+
assert(rb->_BaseFormat == GL_RGBA);
/* add other types in future? */
assert(rb->DataType == GL_SHORT || rb->DataType == GL_UNSIGNED_SHORT);
/* read colors from color buffer */
_swrast_read_rgba_span(ctx, ctx->ReadBuffer->_ColorReadBuffer, width,
- xpos, ypos + i, rgba);
+ xpos, ypos + i, CHAN_TYPE, rgba);
/* do accumulation */
if (swrast->_IntegerAccumMode) {
/* read colors from color buffer */
_swrast_read_rgba_span(ctx, ctx->ReadBuffer->_ColorReadBuffer, width,
- xpos, ypos + i, rgba);
+ xpos, ypos + i, CHAN_TYPE, rgba);
/* do load */
if (swrast->_IntegerAccumMode) {
}
}
}
- else {
- /* other types someday */
- }
}
if (accumRb->DataType == GL_SHORT ||
accumRb->DataType == GL_UNSIGNED_SHORT) {
const GLfloat scale = value * CHAN_MAXF / ACCUM_SCALE16;
- GLuint buffer, i;
+ GLuint buffer;
+ GLint i;
/* XXX maybe transpose the 'i' and 'buffer' loops??? */
for (i = 0; i < height; i++) {
- GLchan rgba[MAX_WIDTH][4];
GLshort accumRow[4 * MAX_WIDTH];
GLshort *acc;
+ SWspan span;
+
+ /* init color span */
+ INIT_SPAN(span, GL_BITMAP);
+ span.end = width;
+ span.arrayMask = SPAN_RGBA;
+ span.x = xpos;
+ span.y = ypos + i;
if (directAccess) {
acc = (GLshort *) accumRb->GetPointer(ctx, accumRb, xpos, ypos +i);
ASSERT(acc[j * 4 + 1] < max);
ASSERT(acc[j * 4 + 2] < max);
ASSERT(acc[j * 4 + 3] < max);
- rgba[j][RCOMP] = multTable[acc[j * 4 + 0]];
- rgba[j][GCOMP] = multTable[acc[j * 4 + 1]];
- rgba[j][BCOMP] = multTable[acc[j * 4 + 2]];
- rgba[j][ACOMP] = multTable[acc[j * 4 + 3]];
+ span.array->rgba[j][RCOMP] = multTable[acc[j * 4 + 0]];
+ span.array->rgba[j][GCOMP] = multTable[acc[j * 4 + 1]];
+ span.array->rgba[j][BCOMP] = multTable[acc[j * 4 + 2]];
+ span.array->rgba[j][ACOMP] = multTable[acc[j * 4 + 3]];
}
}
else {
/* scaled integer (or float) accum buffer */
GLint j;
for (j = 0; j < width; j++) {
+#if CHAN_BITS==32
+ GLchan r = acc[j * 4 + 0] * scale;
+ GLchan g = acc[j * 4 + 1] * scale;
+ GLchan b = acc[j * 4 + 2] * scale;
+ GLchan a = acc[j * 4 + 3] * scale;
+#else
GLint r = IROUND( (GLfloat) (acc[j * 4 + 0]) * scale );
GLint g = IROUND( (GLfloat) (acc[j * 4 + 1]) * scale );
GLint b = IROUND( (GLfloat) (acc[j * 4 + 2]) * scale );
GLint a = IROUND( (GLfloat) (acc[j * 4 + 3]) * scale );
- rgba[j][RCOMP] = CLAMP( r, 0, CHAN_MAX );
- rgba[j][GCOMP] = CLAMP( g, 0, CHAN_MAX );
- rgba[j][BCOMP] = CLAMP( b, 0, CHAN_MAX );
- rgba[j][ACOMP] = CLAMP( a, 0, CHAN_MAX );
+#endif
+ span.array->rgba[j][RCOMP] = CLAMP( r, 0, CHAN_MAX );
+ span.array->rgba[j][GCOMP] = CLAMP( g, 0, CHAN_MAX );
+ span.array->rgba[j][BCOMP] = CLAMP( b, 0, CHAN_MAX );
+ span.array->rgba[j][ACOMP] = CLAMP( a, 0, CHAN_MAX );
}
}
/* store colors */
- for (buffer = 0; buffer < fb->_NumColorDrawBuffers[0]; buffer++) {
- struct gl_renderbuffer *rb = fb->_ColorDrawBuffers[0][buffer];
+ for (buffer = 0; buffer < fb->_NumColorDrawBuffers; buffer++) {
+ struct gl_renderbuffer *rb = fb->_ColorDrawBuffers[buffer];
if (masking) {
- _swrast_mask_rgba_array(ctx, rb, width, xpos, ypos + i, rgba);
+ _swrast_mask_rgba_span(ctx, rb, &span);
}
- rb->PutRow(ctx, rb, width, xpos, ypos + i, rgba, NULL);
+ rb->PutRow(ctx, rb, width, xpos, ypos + i, span.array->rgba, NULL);
}
}
}
* Software fallback for glAccum.
*/
void
-_swrast_Accum( GLcontext *ctx, GLenum op, GLfloat value,
- GLint xpos, GLint ypos,
- GLint width, GLint height )
-
+_swrast_Accum(GLcontext *ctx, GLenum op, GLfloat value)
{
SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ GLint xpos, ypos, width, height;
- if (SWRAST_CONTEXT(ctx)->NewState)
+ if (swrast->NewState)
_swrast_validate_derived( ctx );
if (!ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer) {
return;
}
- RENDER_START(swrast, ctx);
+ swrast_render_start(ctx);
+
+ /* Compute region after calling swrast_render_start() so that we know the
+ * drawbuffer's size/bounds are up to date.
+ */
+ xpos = ctx->DrawBuffer->_Xmin;
+ ypos = ctx->DrawBuffer->_Ymin;
+ width = ctx->DrawBuffer->_Xmax - ctx->DrawBuffer->_Xmin;
+ height = ctx->DrawBuffer->_Ymax - ctx->DrawBuffer->_Ymin;
switch (op) {
case GL_ADD:
break;
}
- RENDER_FINISH(swrast, ctx);
+ swrast_render_finish(ctx);
}
+
+
+#endif /* FEATURE_accum */
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