-/* $Id: s_bitmap.c,v 1.14 2002/02/02 17:24:11 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 4.1
+ * Version: 6.3
*
- * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2004 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"),
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
+/**
+ * \file swrast/s_bitmap.c
+ * \brief glBitmap rendering.
+ * \author Brian Paul
+ */
#include "glheader.h"
+#include "bufferobj.h"
#include "image.h"
#include "macros.h"
-#include "mmath.h"
#include "pixel.h"
#include "s_context.h"
-#include "s_fog.h"
#include "s_span.h"
struct sw_span span;
ASSERT(ctx->RenderMode == GL_RENDER);
- ASSERT(bitmap);
+
+ if (unpack->BufferObj->Name) {
+ /* unpack from PBO */
+ GLubyte *buf;
+ if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
+ GL_COLOR_INDEX, GL_BITMAP,
+ (GLvoid *) bitmap)) {
+ _mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)");
+ return;
+ }
+ buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ GL_READ_ONLY_ARB,
+ unpack->BufferObj);
+ if (!buf) {
+ /* buffer is already mapped - that's an error */
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)");
+ return;
+ }
+ bitmap = ADD_POINTERS(buf, bitmap);
+ }
RENDER_START(swrast,ctx);
if (SWRAST_CONTEXT(ctx)->NewState)
_swrast_validate_derived( ctx );
- INIT_SPAN(span);
- span.arrayMask |= SPAN_XY;
- span.end = width;
+ INIT_SPAN(span, GL_BITMAP, width, 0, SPAN_XY);
+
if (ctx->Visual.rgbMode) {
span.interpMask |= SPAN_RGBA;
span.red = FloatToFixed(ctx->Current.RasterColor[0] * CHAN_MAXF);
}
else {
span.interpMask |= SPAN_INDEX;
- span.index = ChanToFixed(ctx->Current.RasterIndex);
+ span.index = FloatToFixed(ctx->Current.RasterIndex);
span.indexStep = 0;
}
if (ctx->Depth.Test)
- _mesa_span_default_z(ctx, &span);
+ _swrast_span_default_z(ctx, &span);
if (ctx->Fog.Enabled)
- _mesa_span_default_fog(ctx, &span);
+ _swrast_span_default_fog(ctx, &span);
+ if (ctx->Texture._EnabledCoordUnits)
+ _swrast_span_default_texcoords(ctx, &span);
for (row = 0; row < height; row++, span.y++) {
- const GLubyte *src = (const GLubyte *) _mesa_image_address( unpack,
- bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, 0, row, 0 );
+ const GLubyte *src = (const GLubyte *) _mesa_image_address2d(unpack,
+ bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0);
if (unpack->LsbFirst) {
/* Lsb first */
GLubyte mask = 1U << (unpack->SkipPixels & 0x7);
for (col = 0; col < width; col++) {
if (*src & mask) {
- span.xArray[count] = px + col;
- span.yArray[count] = py + row;
+ span.array->x[count] = px + col;
+ span.array->y[count] = py + row;
count++;
}
if (mask == 128U) {
GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);
for (col = 0; col < width; col++) {
if (*src & mask) {
- span.xArray[count] = px + col;
- span.yArray[count] = py + row;
+ span.array->x[count] = px + col;
+ span.array->y[count] = py + row;
count++;
}
if (mask == 1U) {
/* flush the span */
span.end = count;
if (ctx->Visual.rgbMode)
- _mesa_write_rgba_span(ctx, &span, GL_BITMAP);
+ _swrast_write_rgba_span(ctx, &span);
else
- _mesa_write_index_span(ctx, &span, GL_BITMAP);
+ _swrast_write_index_span(ctx, &span);
span.end = 0;
count = 0;
}
}
RENDER_FINISH(swrast,ctx);
+
+ if (unpack->BufferObj->Name) {
+ /* done with PBO so unmap it now */
+ ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
+ unpack->BufferObj);
+ }
+}
+
+
+#if 0
+/*
+ * XXX this is another way to implement Bitmap. Use horizontal runs of
+ * fragments, initializing the mask array to indicate which fragmens to
+ * draw or skip.
+ */
+void
+_swrast_Bitmap( GLcontext *ctx, GLint px, GLint py,
+ GLsizei width, GLsizei height,
+ const struct gl_pixelstore_attrib *unpack,
+ const GLubyte *bitmap )
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ GLint row, col;
+ struct sw_span span;
+
+ ASSERT(ctx->RenderMode == GL_RENDER);
+ ASSERT(bitmap);
+
+ RENDER_START(swrast,ctx);
+
+ if (SWRAST_CONTEXT(ctx)->NewState)
+ _swrast_validate_derived( ctx );
+
+ INIT_SPAN(span, GL_BITMAP, width, 0, SPAN_MASK);
+
+ /*span.arrayMask |= SPAN_MASK;*/ /* we'll init span.mask[] */
+ span.x = px;
+ span.y = py;
+ /*span.end = width;*/
+ if (ctx->Visual.rgbMode) {
+ span.interpMask |= SPAN_RGBA;
+ span.red = FloatToFixed(ctx->Current.RasterColor[0] * CHAN_MAXF);
+ span.green = FloatToFixed(ctx->Current.RasterColor[1] * CHAN_MAXF);
+ span.blue = FloatToFixed(ctx->Current.RasterColor[2] * CHAN_MAXF);
+ span.alpha = FloatToFixed(ctx->Current.RasterColor[3] * CHAN_MAXF);
+ span.redStep = span.greenStep = span.blueStep = span.alphaStep = 0;
+ }
+ else {
+ span.interpMask |= SPAN_INDEX;
+ span.index = FloatToFixed(ctx->Current.RasterIndex);
+ span.indexStep = 0;
+ }
+
+ if (ctx->Depth.Test)
+ _swrast_span_default_z(ctx, &span);
+ if (ctx->Fog.Enabled)
+ _swrast_span_default_fog(ctx, &span);
+ if (ctx->Texture._EnabledCoordUnits)
+ _swrast_span_default_texcoords(ctx, &span);
+
+ for (row=0; row<height; row++, span.y++) {
+ const GLubyte *src = (const GLubyte *) _mesa_image_address2d(unpack,
+ bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, row, 0);
+
+ if (unpack->LsbFirst) {
+ /* Lsb first */
+ GLubyte mask = 1U << (unpack->SkipPixels & 0x7);
+ for (col=0; col<width; col++) {
+ span.array->mask[col] = (*src & mask) ? GL_TRUE : GL_FALSE;
+ if (mask == 128U) {
+ src++;
+ mask = 1U;
+ }
+ else {
+ mask = mask << 1;
+ }
+ }
+
+ if (ctx->Visual.rgbMode)
+ _swrast_write_rgba_span(ctx, &span);
+ else
+ _swrast_write_index_span(ctx, &span);
+
+ /* get ready for next row */
+ if (mask != 1)
+ src++;
+ }
+ else {
+ /* Msb first */
+ GLubyte mask = 128U >> (unpack->SkipPixels & 0x7);
+ for (col=0; col<width; col++) {
+ span.array->mask[col] = (*src & mask) ? GL_TRUE : GL_FALSE;
+ if (mask == 1U) {
+ src++;
+ mask = 128U;
+ }
+ else {
+ mask = mask >> 1;
+ }
+ }
+
+ if (ctx->Visual.rgbMode)
+ _swrast_write_rgba_span(ctx, &span);
+ else
+ _swrast_write_index_span(ctx, &span);
+
+ /* get ready for next row */
+ if (mask != 128)
+ src++;
+ }
+ }
+
+ RENDER_FINISH(swrast,ctx);
}
+#endif
projects / mesa.git / blobdiff