From f4092abdf94af6a99aff944d6264bc1284e8bdd4 Mon Sep 17 00:00:00 2001 From: Reinhard Tartler Date: Mon, 10 Oct 2011 17:43:39 +0200 Subject: Imported nx-X11-3.1.0-1.tar.gz Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository --- nx-X11/extras/Mesa/src/mesa/swrast/s_bitmap.c | 282 ++++++++++++++++++++++++++ 1 file changed, 282 insertions(+) create mode 100644 nx-X11/extras/Mesa/src/mesa/swrast/s_bitmap.c (limited to 'nx-X11/extras/Mesa/src/mesa/swrast/s_bitmap.c') diff --git a/nx-X11/extras/Mesa/src/mesa/swrast/s_bitmap.c b/nx-X11/extras/Mesa/src/mesa/swrast/s_bitmap.c new file mode 100644 index 000000000..dd5008cf6 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/swrast/s_bitmap.c @@ -0,0 +1,282 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3 + * + * 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"), + * 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 + * 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. + */ + +/** + * \file swrast/s_bitmap.c + * \brief glBitmap rendering. + * \author Brian Paul + */ + +#include "glheader.h" +#include "bufferobj.h" +#include "image.h" +#include "macros.h" +#include "pixel.h" + +#include "s_context.h" +#include "s_span.h" + + + +/* + * Render a bitmap. + */ +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; + GLuint count = 0; + struct sw_span span; + + ASSERT(ctx->RenderMode == GL_RENDER); + + 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, GL_BITMAP, width, 0, SPAN_XY); + + 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 (swrast->_FogEnabled) + _swrast_span_default_fog(ctx, &span); + if (ctx->Texture._EnabledCoordUnits) + _swrast_span_default_texcoords(ctx, &span); + + for (row = 0; row < height; row++) { + 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.array->x[count] = px + col; + span.array->y[count] = py + row; + count++; + } + if (mask == 128U) { + src++; + mask = 1U; + } + else { + mask = mask << 1; + } + } + + /* get ready for next row */ + if (mask != 1) + src++; + } + else { + /* Msb first */ + GLubyte mask = 128U >> (unpack->SkipPixels & 0x7); + for (col = 0; col < width; col++) { + if (*src & mask) { + span.array->x[count] = px + col; + span.array->y[count] = py + row; + count++; + } + if (mask == 1U) { + src++; + mask = 128U; + } + else { + mask = mask >> 1; + } + } + + /* get ready for next row */ + if (mask != 128) + src++; + } + + if (count + width >= MAX_WIDTH || row + 1 == height) { + /* flush the span */ + span.end = count; + if (ctx->Visual.rgbMode) + _swrast_write_rgba_span(ctx, &span); + else + _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 (swrast->_FogEnabled) + _swrast_span_default_fog(ctx, &span); + if (ctx->Texture._EnabledCoordUnits) + _swrast_span_default_texcoords(ctx, &span); + + for (row=0; rowLsbFirst) { + /* Lsb first */ + GLubyte mask = 1U << (unpack->SkipPixels & 0x7); + for (col=0; colmask[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; colmask[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 -- cgit v1.2.3