diff options
Diffstat (limited to 'src/mesa/drivers/dri/radeon/radeon_subset_bitmap.c')
| -rw-r--r-- | src/mesa/drivers/dri/radeon/radeon_subset_bitmap.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/radeon/radeon_subset_bitmap.c b/src/mesa/drivers/dri/radeon/radeon_subset_bitmap.c new file mode 100644 index 0000000000..cb4a514221 --- /dev/null +++ b/src/mesa/drivers/dri/radeon/radeon_subset_bitmap.c @@ -0,0 +1,197 @@ +/** + * \file radeon_subset_bitmap.c + * \brief Bitmap drawing. + * + * \author Keith Whitwell <keith@tungstengraphics.com> + */ + +/* + * Copyright 2003 ATI Technologies Inc., Ontario, Canada, and + * Tungsten Graphics Inc., Cedar Park, Texas. + * + * 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 + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, 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 (including the next + * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * ATI, TUNGSTEN GRAPHICS AND/OR THEIR SUPPLIERS 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. + * + */ + +/* $XFree86$ */ + +#include "glheader.h" +#include "mtypes.h" +#include "colormac.h" +#include "context.h" +#include "enums.h" +#include "imports.h" +#include "image.h" +/*#include "mmath.h"*/ +#include "macros.h" +#include "state.h" + +#include "radeon_context.h" +#include "radeon_ioctl.h" +#include "radeon_state.h" +#include "radeon_subset.h" + +/** + * \brief Cope with depth operations by drawing individual pixels as points + * + * \param xorig x coordinate of the bitmap corner. + * \param yorig y coordinate of the bitmap corner. + * \param xmove increment to the final x coordinate. + * \param ymove increment to the final y coordinate. + * \param width bitmap width. + * \param height bitmap height. + * \param bitmap bitmap pointer. + * + * Clips the bitmap coordinates and adjusts for windows coordinates. Draws the + * bitmap with glPoints(), turning off TCL and hardware viewport transformation + * to emit raw pixel coordinates. Finally fires any outstanding vertices and + * restores TCL, viewport, texture and color states. + */ +void +radeonPointsBitmap( GLsizei width, GLsizei height, + GLfloat xorig, GLfloat yorig, + GLfloat xmove, GLfloat ymove, + const GLubyte *bitmap ) +{ + GET_CURRENT_CONTEXT(ctx); + GLsizei bmwidth = width, bmheight = height; + GLint px, py; + radeonContextPtr rmesa = RADEON_CONTEXT(ctx); + GLfloat saved_color[4], saved_tex0[2]; + GLint row, col; + GLuint orig_se_cntl; + GLuint w, h; + const struct gl_pixelstore_attrib *unpack = &ctx->Unpack; + + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + if (width < 0 || height < 0) { + _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" ); + return; + } + + if (!ctx->Current.RasterPosValid) + return; + + if (ctx->NewState) + _mesa_update_state(ctx); + + + if (ctx->_RotateMode) { + width = bmheight; height = bmwidth; + + px = IFLOOR(ctx->Current.RasterPos[0] + yorig); + py = IFLOOR(ctx->Current.RasterPos[1] + xorig); + + ctx->Current.RasterPos[0] += ymove; + ctx->Current.RasterPos[1] += xmove; + } + else { + px = IFLOOR(ctx->Current.RasterPos[0] - xorig); + py = IFLOOR(ctx->Current.RasterPos[1] - yorig); + + ctx->Current.RasterPos[0] += xmove; + ctx->Current.RasterPos[1] += ymove; + } + + + + /* Turn off tcl and the hw viewport transformation so that we can + * emit raw pixel coordinates: + */ + radeonSubsetVtxEnableTCL( rmesa, GL_FALSE ); + RADEON_STATECHANGE( rmesa, set ); + orig_se_cntl = rmesa->hw.set.cmd[SET_SE_CNTL]; + rmesa->hw.set.cmd[SET_SE_CNTL] &= ~(RADEON_VPORT_XY_XFORM_ENABLE | + RADEON_VPORT_Z_XFORM_ENABLE); + + + /* Adjust for window coordinates, flip y values: + */ + h = rmesa->dri.drawable->h + rmesa->dri.drawable->y - 1; + w = rmesa->dri.drawable->w; + px += rmesa->dri.drawable->x; + + /* Save current color, texcoord to restore later: + */ + COPY_4V( saved_color, ctx->Current.Attrib[VERT_ATTRIB_COLOR0] ); + COPY_2V( saved_tex0, ctx->Current.Attrib[VERT_ATTRIB_TEX0] ); + + /* Just use the GL entrypoints to talk to radeon_subset_vtx.c: + */ + glBegin( GL_POINTS ); + glColor4fv( ctx->Current.RasterColor ); + glTexCoord2fv( ctx->Current.RasterTexCoords[0] ); + + + if (ctx->_RotateMode) { + for (col=0; col<width; col++) { + const GLubyte *src = (const GLubyte *) + _mesa_image_address( unpack, bitmap, height, width, + GL_COLOR_INDEX, GL_BITMAP, 0, col, 0 ); + + /* Msb first */ + GLubyte mask = 128U >> (unpack->SkipPixels & 0x7); + for (row=0; row<height; row++) { + if (*src & mask) { + glVertex2f( px-col, h - (py + row) ); + } + src += mask & 1; + mask = ((mask << 7) & 0xff) | (mask >> 1); + } + /* get ready for next row */ + if (mask != 128) + src++; + } + } + else { + for (row=0; row<height; row++) { + const GLubyte *src = (const GLubyte *) + _mesa_image_address( unpack, bitmap, width, height, + GL_COLOR_INDEX, GL_BITMAP, 0, row, 0 ); + + /* Msb first */ + GLubyte mask = 128U >> (unpack->SkipPixels & 0x7); + for (col=0; col<width; col++) { + if (*src & mask) { + glVertex2f( px+col, h - (py + row) ); + } + src += mask & 1; + mask = ((mask << 7) & 0xff) | (mask >> 1); + } + /* get ready for next row */ + if (mask != 128) + src++; + } + } + + glEnd(); + glColor4fv( saved_color ); + glTexCoord2fv( saved_tex0 ); + + /* Fire outstanding vertices, restore state + */ + RADEON_STATECHANGE( rmesa, set ); + rmesa->hw.set.cmd[SET_SE_CNTL] = orig_se_cntl; + radeonSubsetVtxEnableTCL( rmesa, GL_TRUE ); +} + |