[khornicek] 43232: - add wglUseFontOutlines, wglUseFontBitmaps - code ported (rearranged, simplified, fixed memory leaks, removed unneeded variables) from Mesa3D glDirect driver (c) SciTech Software, Inc - more work needed but 3D text screen saver finally renders at least something
30 Sep
2009
30 Sep
'09
12:12 p.m.
Author: khornicek
Date: Wed Sep 30 14:12:56 2009
New Revision: 43232
URL: http://svn.reactos.org/svn/reactos?rev=43232&view=rev
Log:
- add wglUseFontOutlines, wglUseFontBitmaps
- code ported (rearranged, simplified, fixed memory leaks, removed unneeded variables)
from Mesa3D glDirect driver (c) SciTech Software, Inc
- more work needed but 3D text screen saver finally renders at least something
Added:
trunk/reactos/dll/win32/opengl32/font.c (with props)
Modified:
trunk/reactos/dll/win32/opengl32/opengl32.h
trunk/reactos/dll/win32/opengl32/opengl32.rbuild
trunk/reactos/dll/win32/opengl32/wgl.c
Added: trunk/reactos/dll/win32/opengl32/font.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/opengl32/font.c?…
==============================================================================
--- trunk/reactos/dll/win32/opengl32/font.c (added)
+++ trunk/reactos/dll/win32/opengl32/font.c [iso-8859-1] Wed Sep 30 14:12:56 2009
@@ -1,0 +1,1201 @@
+/****************************************************************************
+* Copyright (C) 1991-2004 SciTech Software, Inc. 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
+* SCITECH SOFTWARE INC 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 "opengl32.h"
+#include <math.h>
+
+#define LINE_BUF_QUANT 4000
+#define VERT_BUF_QUANT 4000
+
+static HFONT hNewFont, hOldFont;
+static FLOAT ScaleFactor;
+static FLOAT* LineBuf;
+static DWORD LineBufSize;
+static DWORD LineBufIndex;
+static FLOAT* VertBuf;
+static DWORD VertBufSize;
+static DWORD VertBufIndex;
+static GLenum TessErrorOccurred;
+
+
+/*****************************************************************************
+* InitLineBuf
+*
+* Initializes the global LineBuf and its associated size and current-element
+* counters.
+*****************************************************************************/
+
+INT InitLineBuf(VOID)
+{
+ if (!(LineBuf = (FLOAT*)
+ HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (LineBufSize = LINE_BUF_QUANT) *
sizeof(FLOAT))))
+ return 0;
+ LineBufIndex = 0;
+ return 1;
+}
+
+/*****************************************************************************
+* InitVertBuf
+*
+* Initializes the global VertBuf and its associated size and current-element
+* counters.
+*****************************************************************************/
+
+INT InitVertBuf(VOID)
+{
+ if (!(VertBuf = (FLOAT*)
+ HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, (VertBufSize = VERT_BUF_QUANT) *
sizeof(FLOAT))))
+ return 0;
+ VertBufIndex = 0;
+ return 1;
+}
+
+/*****************************************************************************
+* AppendToLineBuf
+*
+* Appends one floating-point value to the global LineBuf array. Return value
+* is non-zero for success, zero for failure.
+*****************************************************************************/
+
+INT AppendToLineBuf(FLOAT value)
+{
+ if (LineBufIndex >= LineBufSize)
+ {
+ FLOAT* f;
+
+ f = (FLOAT*) HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, LineBuf,
(LineBufSize += LINE_BUF_QUANT) * sizeof(FLOAT));
+ if (!f)
+ return 0;
+ LineBuf = f;
+ }
+ LineBuf[LineBufIndex++] = value;
+ return 1;
+}
+
+/*****************************************************************************
+* AppendToVertBuf
+*
+* Appends one floating-point value to the global VertBuf array. Return value
+* is non-zero for success, zero for failure.
+*
+* Note that we can't realloc this one, because the tessellator is using
+* pointers into it.
+*****************************************************************************/
+
+INT AppendToVertBuf(FLOAT value)
+{
+ if (VertBufIndex >= VertBufSize)
+ return 0;
+ VertBuf[VertBufIndex++] = value;
+ return 1;
+}
+
+/*****************************************************************************
+* FreeLineBuf
+*
+* Cleans up vertex buffer structure.
+*****************************************************************************/
+
+VOID FreeLineBuf(VOID)
+{
+ if (LineBuf)
+ {
+ HeapFree(GetProcessHeap(), 0, LineBuf);
+ LineBuf = NULL;
+ }
+}
+
+/*****************************************************************************
+* FreeVertBuf
+*
+* Cleans up vertex buffer structure.
+*****************************************************************************/
+
+VOID FreeVertBuf(VOID)
+{
+ if (VertBuf)
+ {
+ HeapFree(GetProcessHeap(), 0, VertBuf);
+ VertBuf = NULL;
+ }
+}
+
+/*****************************************************************************
+* GetWord
+*
+* Fetch the next 16-bit word from a little-endian byte stream, and increment
+* the stream pointer to the next unscanned byte.
+*****************************************************************************/
+
+LONG GetWord(UCHAR** p)
+{
+ LONG value;
+
+ value = ((*p)[1] << 8) + (*p)[0];
+ *p += 2;
+ return value;
+}
+
+/*****************************************************************************
+* GetDWord
+*
+* Fetch the next 32-bit word from a little-endian byte stream, and increment
+* the stream pointer to the next unscanned byte.
+*****************************************************************************/
+
+LONG GetDWord(UCHAR** p)
+{
+ LONG value;
+
+ value = ((*p)[3] << 24) + ((*p)[2] << 16) + ((*p)[1] << 8) +
(*p)[0];
+ *p += 4;
+ return value;
+}
+
+/*****************************************************************************
+* GetFixed
+*
+* Fetch the next 32-bit fixed-point value from a little-endian byte stream,
+* convert it to floating-point, and increment the stream pointer to the next
+* unscanned byte.
+*****************************************************************************/
+double GetFixed(UCHAR** p)
+{
+ LONG hiBits, loBits;
+ double value;
+
+ loBits = GetWord(p);
+ hiBits = GetWord(p);
+ value = (double) ((hiBits << 16) | loBits) / 65536.0;
+
+ return value * ScaleFactor;
+}
+
+
+/*****************************************************************************
+**
+** InvertGlyphBitmap.
+**
+** Invert the bitmap so that it suits OpenGL's representation.
+** Each row starts on a double word boundary.
+**
+*****************************************************************************/
+
+VOID InvertGlyphBitmap(INT w, INT h, DWORD *fptr, DWORD *tptr)
+{
+ INT dWordsInRow = (w+31)/32;
+ INT i, j;
+
+ if (w <= 0 || h <= 0) {
+ return;
+ }
+
+ tptr += ((h-1)*dWordsInRow);
+ for (i = 0; i < h; i++) {
+ for (j = 0; j < dWordsInRow; j++) {
+ *(tptr + j) = *(fptr + j);
+ }
+ tptr -= dWordsInRow;
+ fptr += dWordsInRow;
+ }
+}
+
+/*****************************************************************************
+* CreateHighResolutionFont
+*
+* Gets metrics for the current font and creates an equivalent font
+* scaled to the design units of the font.
+*
+*****************************************************************************/
+
+HFONT CreateHighResolutionFont(HDC hDC)
+{
+ UINT otmSize;
+ OUTLINETEXTMETRIC *otm;
+ LONG fontHeight, fontWidth, fontUnits;
+ LOGFONTW logFont, logFontFaceName;
+
+ otmSize = GetOutlineTextMetricsW(hDC, 0, NULL);
+ if (!otmSize)
+ return NULL;
+
+ otm = (OUTLINETEXTMETRIC *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, otmSize);
+ if (!otm)
+ return NULL;
+
+ otm->otmSize = otmSize;
+ if (!GetOutlineTextMetricsW(hDC, otmSize, otm))
+ return NULL;
+
+ GetObjectW(GetCurrentObject(hDC, OBJ_FONT), sizeof(logFontFaceName),
&logFontFaceName);
+
+ fontHeight = otm->otmTextMetrics.tmHeight -
+ otm->otmTextMetrics.tmInternalLeading;
+ fontWidth = otm->otmTextMetrics.tmAveCharWidth;
+ fontUnits = (LONG) otm->otmEMSquare;
+
+ ScaleFactor = 1.0F / (FLOAT) fontUnits;
+
+ logFont.lfHeight = - ((LONG) fontUnits);
+ logFont.lfWidth = (LONG)((FLOAT) (fontWidth * fontUnits) / (FLOAT) fontHeight);
+ logFont.lfEscapement = 0;
+ logFont.lfOrientation = 0;
+ logFont.lfWeight = otm->otmTextMetrics.tmWeight;
+ logFont.lfItalic = otm->otmTextMetrics.tmItalic;
+ logFont.lfUnderline = otm->otmTextMetrics.tmUnderlined;
+ logFont.lfStrikeOut = otm->otmTextMetrics.tmStruckOut;
+ logFont.lfCharSet = otm->otmTextMetrics.tmCharSet;
+ logFont.lfOutPrecision = OUT_OUTLINE_PRECIS;
+ logFont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
+ logFont.lfQuality = DEFAULT_QUALITY;
+ logFont.lfPitchAndFamily =
+ otm->otmTextMetrics.tmPitchAndFamily & 0xf0;
+ wcscpy(logFont.lfFaceName, logFontFaceName.lfFaceName);
+
+ hNewFont = CreateFontIndirectW(&logFont);
+
+ HeapFree(GetProcessHeap(), 0, otm);
+
+ return hNewFont;
+}
+
+/*****************************************************************************
+* MakeLinesFromArc
+*
+* Subdivides one arc of a quadratic spline until the chordal deviation
+* tolerance requirement is met, then places the resulting set of line
+* segments in the global LineBuf.
+*****************************************************************************/
+INT MakeLinesFromArc(FLOAT x0, FLOAT y0, FLOAT x1, FLOAT y1, FLOAT x2, FLOAT y2,
+ DWORD vertexCountIndex, FLOAT chordalDeviationSquared)
+{
+ FLOAT x01;
+ FLOAT y01;
+ FLOAT x12;
+ FLOAT y12;
+ FLOAT midPointX;
+ FLOAT midPointY;
+ FLOAT deltaX;
+ FLOAT deltaY;
+
+ /*
+ * Calculate midpoint of the curve by de Casteljau:
+ */
+ x01 = 0.5F * (x0 + x1);
+ y01 = 0.5F * (y0 + y1);
+ x12 = 0.5F * (x1 + x2);
+ y12 = 0.5F * (y1 + y2);
+ midPointX = 0.5F * (x01 + x12);
+ midPointY = 0.5F * (y01 + y12);
+
+
+ /*
+ * Estimate chordal deviation by the distance from the midpoint
+ * of the curve to its non-pointpolated control point. If this
+ * distance is greater than the specified chordal deviation
+ * constraint, then subdivide. Otherwise, generate polylines
+ * from the three control points.
+ */
+ deltaX = midPointX - x1;
+ deltaY = midPointY - y1;
+
+ if (deltaX * deltaX + deltaY * deltaY > chordalDeviationSquared)
+ {
+ MakeLinesFromArc( x0, y0,
+ x01, y01,
+ midPointX, midPointY,
+ vertexCountIndex,
+ chordalDeviationSquared);
+
+ MakeLinesFromArc( midPointX, midPointY,
+ x12, y12,
+ x2, y2,
+ vertexCountIndex,
+ chordalDeviationSquared);
+ }
+ else
+ {
+ /*
+ * The "pen" is already at (x0, y0), so we don't need to
+ * add that point to the LineBuf.
+ */
+ if (!AppendToLineBuf(x1)
+ || !AppendToLineBuf(y1)
+ || !AppendToLineBuf(x2)
+ || !AppendToLineBuf(y2))
+ return 0;
+ LineBuf[vertexCountIndex] += 2.0F;
+ }
+
+ return 1;
+}
+
+/*****************************************************************************
+* MakeLinesFromTTQSpline
+*
+* Converts points from the poly quadratic spline in a TT_PRIM_QSPLINE
+* structure to polyline points in the global LineBuf.
+*****************************************************************************/
+
+INT MakeLinesFromTTQSpline( UCHAR** pp, DWORD vertexCountIndex, WORD pointCount, FLOAT
chordalDeviation)
+{
+ FLOAT x0, y0, x1, y1, x2, y2;
+ WORD point;
+
+ /*
+ * Process each of the non-pointpolated points in the outline.
+ * To do this, we need to generate two pointpolated points (the
+ * start and end of the arc) for each non-pointpolated point.
+ * The first pointpolated point is always the one most recently
+ * stored in LineBuf, so we just extract it from there. The
+ * second pointpolated point is either the average of the next
+ * two points in the QSpline, or the last point in the QSpline
+ * if only one remains.
+ */
+ for (point = 0; point < pointCount - 1; ++point)
+ {
+ x0 = LineBuf[LineBufIndex - 2];
+ y0 = LineBuf[LineBufIndex - 1];
+
+ x1 = (FLOAT) GetFixed(pp);
+ y1 = (FLOAT) GetFixed(pp);
+
+ if (point == pointCount - 2)
+ {
+ /*
+ * This is the last arc in the QSpline. The final
+ * point is the end of the arc.
+ */
+ x2 = (FLOAT) GetFixed(pp);
+ y2 = (FLOAT) GetFixed(pp);
+ }
+ else
+ {
+ /*
+ * Peek at the next point in the input to compute
+ * the end of the arc:
+ */
+ x2 = 0.5F * (x1 + (FLOAT) GetFixed(pp));
+ y2 = 0.5F * (y1 + (FLOAT) GetFixed(pp));
+ /*
+ * Push the point back onto the input so it will
+ * be reused as the next off-curve point:
+ */
+ *pp -= 8;
+ }
+
+ if (!MakeLinesFromArc( x0, y0,
+ x1, y1,
+ x2, y2,
+ vertexCountIndex,
+ chordalDeviation * chordalDeviation))
+ return 0;
+ }
+
+ return 1;
+}
+
+/*****************************************************************************
+* MakeLinesFromTTLine
+*
+* Converts points from the polyline in a TT_PRIM_LINE structure to
+* equivalent points in the global LineBuf.
+*****************************************************************************/
+INT MakeLinesFromTTLine(UCHAR** pp, DWORD vertexCountIndex, WORD pointCount)
+{
+ /*
+ * Just copy the line segments into the line buffer (converting
+ * type as we go):
+ */
+ LineBuf[vertexCountIndex] += pointCount;
+ while (pointCount--)
+ {
+ if (!AppendToLineBuf((FLOAT) GetFixed(pp)) /* X coord */
+ || !AppendToLineBuf((FLOAT) GetFixed(pp))) /* Y coord */
+ return 0;
+ }
+
+ return 1;
+}
+
+/*****************************************************************************
+* MakeLinesFromTTPolyCurve
+*
+* Converts the lines and splines in a single TTPOLYCURVE structure to points
+* in the global LineBuf.
+*****************************************************************************/
+
+INT MakeLinesFromTTPolycurve(UCHAR** pp, DWORD vertexCountIndex, FLOAT chordalDeviation)
+{
+ WORD type;
+ WORD pointCount;
+
+ /*
+ * Pick up the relevant fields of the TTPOLYCURVE structure:
+ */
+ type = (WORD) GetWord(pp);
+ pointCount = (WORD) GetWord(pp);
+
+ /*
+ * Convert the "curve" to line segments:
+ */
+ if (type == TT_PRIM_LINE)
+ return MakeLinesFromTTLine( pp,
+ vertexCountIndex,
+ pointCount);
+ else if (type == TT_PRIM_QSPLINE)
+ return MakeLinesFromTTQSpline( pp,
+ vertexCountIndex,
+ pointCount,
+ chordalDeviation);
+ else
+ return 0;
+}
+
+/*****************************************************************************
+* MakeLinesFromTTPolygon
+*
+* Converts a TTPOLYGONHEADER and its associated curve structures into a
+* single polyline loop in the global LineBuf.
+*****************************************************************************/
+
+INT MakeLinesFromTTPolygon(UCHAR** pp, FLOAT chordalDeviation)
+{
+ DWORD polySize;
+ UCHAR* polyStart;
+ DWORD vertexCountIndex;
+
+ /*
+ * Record where the polygon data begins, and where the loop's
+ * vertex count resides:
+ */
+ polyStart = *pp;
+ vertexCountIndex = LineBufIndex;
+ if (!AppendToLineBuf(0.0F))
+ return 0;
+
+ /*
+ * Extract relevant data from the TTPOLYGONHEADER:
+ */
+ polySize = GetDWord(pp);
+ if (GetDWord(pp) != TT_POLYGON_TYPE) /* polygon type */
+ return 0;
+ if (!AppendToLineBuf((FLOAT) GetFixed(pp))) /* first X coord */
+ return 0;
+ if (!AppendToLineBuf((FLOAT) GetFixed(pp))) /* first Y coord */
+ return 0;
+ LineBuf[vertexCountIndex] += 1.0F;
+
+ /*
+ * Process each of the TTPOLYCURVE structures in the polygon:
+ */
+ while (*pp < polyStart + polySize)
+ if (!MakeLinesFromTTPolycurve( pp,
+ vertexCountIndex,
+ chordalDeviation))
+ return 0;
+
+ return 1;
+}
+
+/*****************************************************************************
+* TessVertexOut
+*
+* Used by tessellator to handle output vertexes.
+*****************************************************************************/
+
+VOID CALLBACK TessVertexOutData(FLOAT p[3], GLfloat z)
+{
+ GLfloat v[3];
+ v[0] = (GLfloat) p[0];
+ v[1] = (GLfloat) p[1];
+ v[2] = z;
+ glVertex3fv(v);
+}
+
+/*****************************************************************************
+* TessCombine
+*
+* Used by tessellator to handle self-pointsecting contours and degenerate
+* geometry.
+*****************************************************************************/
+VOID CALLBACK TessCombine(double coords[3], VOID* vertex_data[4], FLOAT weight[4],
VOID** outData)
+{
+ if (!AppendToVertBuf((FLOAT) coords[0])
+ || !AppendToVertBuf((FLOAT) coords[1])
+ || !AppendToVertBuf((FLOAT) coords[2]))
+ TessErrorOccurred = GL_OUT_OF_MEMORY;
+
+ *outData = VertBuf + (VertBufIndex - 3);
+}
+
+/*****************************************************************************
+* TessError
+*
+* Saves the last tessellator error code in the global TessErrorOccurred.
+*****************************************************************************/
+
+VOID CALLBACK TessError(GLenum error)
+{
+ TessErrorOccurred = error;
+}
+
+/*****************************************************************************
+* MakeLinesFromGlyph
+*
+* Converts the outline of a glyph from the TTPOLYGON format to a simple
+* array of floating-point values containing one or more loops.
+*
+* The first element of the output array is a count of the number of loops.
+* The loop data follows this count. Each loop consists of a count of the
+* number of vertices it contains, followed by the vertices. Each vertex
+* is an X and Y coordinate. For example, a single triangle might be
+* described by this array:
+*
+* 1., 3., 0., 0., 1., 0., 0., 1.
+* ^ ^ ^ ^ ^ ^ ^ ^
+* #loops #verts x1 y1 x2 y2 x3 y3
+*
+* A two-loop glyph would look like this:
+*
+* 2., 3., 0.,0., 1.,0., 0.,1., 3., .2,.2, .4,.2, .2,.4
+*
+* Line segments from the TTPOLYGON are transferred to the output array in
+* the obvious way. Quadratic splines in the TTPOLYGON are converted to
+* collections of line segments
+*****************************************************************************/
+
+INT MakeLinesFromGlyph(UCHAR* glyphBuf, DWORD glyphSize, FLOAT chordalDeviation)
+{
+ UCHAR* p;
+ INT status = 0;
+
+ /*
+ * Pick up all the polygons (aka loops) that make up the glyph:
+ */
+ if (!AppendToLineBuf(0.0F)) /* loop count at LineBuf[0] */
+ goto exit;
+
+ p = glyphBuf;
+ while (p < glyphBuf + glyphSize)
+ {
+ if (!MakeLinesFromTTPolygon(&p, chordalDeviation))
+ goto exit;
+ LineBuf[0] += 1.0F; /* increment loop count */
+ }
+
+ status = 1;
+
+exit:
+ return status;
+}
+
+/*****************************************************************************
+* DrawGlyph
+*
+* Converts the outline of a glyph to OpenGL drawing primitives, tessellating
+* as needed, and then draws the glyph. Tessellation of the quadratic splines
+* in the outline is controlled by "chordalDeviation", and the drawing
+* primitives (lines or polygons) are selected by "format".
+*
+* Return value is nonzero for success, zero for failure.
+*
+* Does not check for OpenGL errors, so if the caller needs to know about them,
+* it should call glGetError().
+*****************************************************************************/
+
+INT DrawGlyph(UCHAR* glyphBuf, DWORD glyphSize, FLOAT chordalDeviation, FLOAT extrusion,
INT format)
+{
+ INT status = 0;
+ FLOAT* p;
+ DWORD loop;
+ DWORD point;
+ GLUtesselator* tess = NULL;
+
+ /*
+ * Initialize the global buffer into which we place the outlines:
+ */
+ if (!InitLineBuf())
+ goto exit;
+
+ /*
+ * Convert the glyph outlines to a set of polyline loops.
+ * (See MakeLinesFromGlyph() for the format of the loop data
+ * structure.)
+ */
+ if (!MakeLinesFromGlyph(glyphBuf, glyphSize, chordalDeviation))
+ goto exit;
+ p = LineBuf;
+
+
+ /*
+ * Now draw the loops in the appropriate format:
+ */
+ if (format == WGL_FONT_LINES)
+ {
+ /*
+ * This is the easy case. Just draw the outlines.
+ */
+ for (loop = (DWORD) *p++; loop; --loop)
+ {
+ glBegin(GL_LINE_LOOP);
+ for (point = (DWORD) *p++; point; --point)
+ {
+ glVertex2fv(p);
+ p += 2;
+ }
+ glEnd();
+ }
+ status = 1;
+ }
+
+ else if (format == WGL_FONT_POLYGONS)
+ {
+ double v[3];
+ FLOAT *save_p = p;
+ GLfloat z_value;
+
+ /*
+ * This is the hard case. We have to set up a tessellator
+ * to convert the outlines into a set of polygonal
+ * primitives, which the tessellator passes to some
+ * auxiliary routines for drawing.
+ */
+
+ if (!InitVertBuf())
+ goto exit;
+ if (!(tess = gluNewTess()))
+ goto exit;
+
+ gluTessCallback(tess, GLU_BEGIN, (VOID(CALLBACK *)()) glBegin);
+ gluTessCallback(tess, GLU_TESS_VERTEX_DATA, (VOID(CALLBACK *)())
TessVertexOutData);
+ gluTessCallback(tess, GLU_END, (VOID(CALLBACK *)()) glEnd);
+ gluTessCallback(tess, GLU_ERROR, (VOID(CALLBACK *)()) TessError);
+ gluTessCallback(tess, GLU_TESS_COMBINE, (VOID(CALLBACK *)()) TessCombine);
+ gluTessNormal(tess, 0.0F, 0.0F, 1.0F);
+
+ TessErrorOccurred = 0;
+ glNormal3f(0.0f, 0.0f, 1.0f);
+ v[2] = 0.0;
+ z_value = 0.0f;
+
+ gluTessBeginPolygon(tess, (VOID *)*(INT *)&z_value);
+
+ for (loop = (DWORD) *p++; loop; --loop)
+ {
+ gluTessBeginContour(tess);
+
+ for (point = (DWORD) *p++; point; --point)
+ {
+ v[0] = p[0];
+ v[1] = p[1];
+ gluTessVertex(tess, v, p);
+ p += 2;
+ }
+
+ gluTessEndContour(tess);
+ }
+ gluTessEndPolygon(tess);
+
+ status = !TessErrorOccurred;
+
+ /* Extrusion code */
+ if (extrusion)
+ {
+ DWORD loops;
+ GLfloat thickness = (GLfloat) - extrusion;
+ FLOAT *vert, *vert2;
+ DWORD count;
+
+ p = save_p;
+ loops = (DWORD) *p++;
+
+ for (loop = 0; loop < loops; loop++)
+ {
+ GLfloat dx, dy, len;
+ DWORD last;
+
+ count = (DWORD) *p++;
+ glBegin(GL_QUAD_STRIP);
+
+ /* Check if the first and last vertex are identical
+ * so we don't draw the same quad twice.
+ */
+ vert = p + (count-1)*2;
+ last = (p[0] == vert[0] && p[1] == vert[1]) ? count-1 : count;
+
+ for (point = 0; point <= last; point++)
+ {
+ vert = p + 2 * (point % last);
+ vert2 = p + 2 * ((point+1) % last);
+
+ dx = vert[0] - vert2[0];
+ dy = vert[1] - vert2[1];
+ len = (GLfloat)sqrt(dx * dx + dy * dy);
+
+ glNormal3f(dy / len, -dx / len, 0.0f);
+ glVertex3f((GLfloat) vert[0],
+ (GLfloat) vert[1], thickness);
+ glVertex3f((GLfloat) vert[0],
+ (GLfloat) vert[1], 0.0f);
+ }
+
+ glEnd();
+ p += count*2;
+ }
+
+ /* Draw the back face */
+ p = save_p;
+ v[2] = thickness;
+ glNormal3f(0.0f, 0.0f, -1.0f);
+ gluTessNormal(tess, 0.0F, 0.0F, -1.0F);
+
+ gluTessBeginPolygon(tess, (VOID *)*(INT *)&thickness);
+
+ for (loop = (DWORD) *p++; loop; --loop)
+ {
+ count = (DWORD) *p++;
+
+ gluTessBeginContour(tess);
+
+ for (point = 0; point < count; point++)
+ {
+ vert = p + ((count-point-1)<<1);
+ v[0] = vert[0];
+ v[1] = vert[1];
+ gluTessVertex(tess, v, vert);
+ }
+ p += count*2;
+
+ gluTessEndContour(tess);
+ }
+ gluTessEndPolygon(tess);
+ }
+
+#if !defined(NDEBUG)
+ if (TessErrorOccurred)
+ DBGPRINT("Tessellation error %s\n",
gluErrorString(TessErrorOccurred));
+#endif
+ }
+
+
+exit:
+ FreeLineBuf();
+ if (tess)
+ gluDeleteTess(tess);
+
+ FreeVertBuf();
+ return status;
+}
+
+
+/*****************************************************************************
+* MakeDisplayListFromGlyph
+*
+* Converts the outline of a glyph to an OpenGL display list.
+*
+* Return value is nonzero for success, zero for failure.
+*
+* Does not check for OpenGL errors, so if the caller needs to know about them,
+* it should call glGetError().
+*****************************************************************************/
+
+INT MakeDisplayListFromGlyph(DWORD listName, UCHAR* glyphBuf, DWORD glyphSize,
LPGLYPHMETRICSFLOAT glyphMetricsFloat,
+ FLOAT chordalDeviation, FLOAT extrusion, INT format)
+{
+ INT status;
+
+ glNewList(listName, GL_COMPILE);
+ status = DrawGlyph(glyphBuf, glyphSize, chordalDeviation, extrusion, format);
+ glTranslatef(glyphMetricsFloat->gmfCellIncX,
glyphMetricsFloat->gmfCellIncY, 0.0F);
+ glEndList();
+
+ return status;
+}
+
+// ***********************************************************************
+
+/*****************************************************************************
+* IntUseFontBitmaps
+*
+* Converts a subrange of the glyphs in a GDI font to OpenGL display
+* lists.
+*
+* Extended to support any GDI font, not just TrueType fonts. (DaveM)
+*
+*****************************************************************************/
+
+BOOL APIENTRY IntUseFontBitmapsW(HDC hDC, DWORD first, DWORD count, DWORD listBase)
+{
+ INT i, ox, oy, ix, iy;
+ INT w = 0, h = 0;
+ INT iBufSize, iCurBufSize = 0;
+ DWORD *bitmapBuffer = NULL;
+ DWORD *invertedBitmapBuffer = NULL;
+ BOOL bSuccessOrFail = TRUE;
+ BOOL bTrueType = FALSE;
+ TEXTMETRIC tm;
+ GLYPHMETRICS gm;
+ RASTERIZER_STATUS rs;
+ MAT2 mat;
+ SIZE size;
+ RECT rect;
+ HDC hDCMem;
+ HBITMAP hBitmap;
+ BITMAPINFO bmi;
+ HFONT hFont;
+
+ // Set up a unity matrix.
+ ZeroMemory(&mat, sizeof(mat));
+ mat.eM11.value = 1;
+ mat.eM22.value = 1;
+
+ // Test to see if selected font is TrueType or not
+ ZeroMemory(&tm, sizeof(tm));
+ if (!GetTextMetrics(hDC, &tm))
+ {
+ DBGPRINT("Font metrics error\n");
+ return FALSE;
+ }
+ bTrueType = (tm.tmPitchAndFamily & TMPF_TRUETYPE) ? TRUE : FALSE;
+
+ // Test to see if TRUE-TYPE capabilities are installed
+ // (only necessary if TrueType font selected)
+ ZeroMemory(&rs, sizeof(rs));
+
+ if (bTrueType)
+ {
+ if (!GetRasterizerCaps (&rs, sizeof (RASTERIZER_STATUS)) || !(rs.wFlags &
TT_ENABLED))
+ {
+ DBGPRINT("No TrueType caps\n");
+ bTrueType = FALSE;
+ }
+ }
+
+ // Trick to get the current font handle
+ hFont = SelectObject(hDC, GetStockObject(SYSTEM_FONT));
+ SelectObject(hDC, hFont);
+
+ // Have memory device context available for holding bitmaps of font glyphs
+ hDCMem = CreateCompatibleDC(hDC);
+ SelectObject(hDCMem, hFont);
+ SetTextColor(hDCMem, RGB(0xFF, 0xFF, 0xFF));
+ SetBkColor(hDCMem, 0);
+
+ for (i = first; (DWORD) i < (first + count); i++)
+ {
+ // Find out how much space is needed for the bitmap so we can
+ // Set the buffer size correctly.
+ if (bTrueType)
+ {
+ // Use TrueType support to get bitmap size of glyph
+ iBufSize = GetGlyphOutline(hDC, i, GGO_BITMAP, &gm, 0, NULL, &mat);
+ if (iBufSize == GDI_ERROR)
+ {
+ bSuccessOrFail = FALSE;
+ break;
+ }
+ }
+ else
+ {
+ // Use generic GDI support to compute bitmap size of glyph
+ w = tm.tmMaxCharWidth;
+ h = tm.tmHeight;
+ if (GetTextExtentPoint32(hDC, (LPCTSTR)&i, 1, &size))
+ {
+ w = size.cx;
+ h = size.cy;
+ }
+ iBufSize = w * h;
+ // Use DWORD multiple for compatibility
+ iBufSize += 3;
+ iBufSize /= 4;
+ iBufSize *= 4;
+ }
+
+ // If we need to allocate Larger Buffers, then do so - but allocate
+ // An extra 50 % so that we don't do too many mallocs !
+ if (iBufSize > iCurBufSize)
+ {
+ if (bitmapBuffer)
+ {
+ HeapFree(GetProcessHeap(), 0, bitmapBuffer);
+ }
+ if (invertedBitmapBuffer)
+ {
+ HeapFree(GetProcessHeap(), 0, invertedBitmapBuffer);
+ }
+
+ iCurBufSize = iBufSize * 2;
+ bitmapBuffer = (DWORD *) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
iCurBufSize);
+ invertedBitmapBuffer = (DWORD *) HeapAlloc(GetProcessHeap(),
HEAP_ZERO_MEMORY, iCurBufSize);
+
+ if (bitmapBuffer == NULL || invertedBitmapBuffer == NULL)
+ {
+ bSuccessOrFail = FALSE;
+ break;
+ }
+ }
+
+ // If we fail to get the Glyph data, delete the display lists
+ // Created so far and return FALSE.
+ if (bTrueType)
+ {
+ // Use TrueType support to get bitmap of glyph
+ if (GetGlyphOutline(hDC, i, GGO_BITMAP, &gm, iBufSize, bitmapBuffer,
&mat) == GDI_ERROR)
+ {
+ bSuccessOrFail = FALSE;
+ break;
+ }
+
+ // Setup glBitmap parameters for current font glyph
+ w = gm.gmBlackBoxX;
+ h = gm.gmBlackBoxY;
+ ox = gm.gmptGlyphOrigin.x;
+ oy = gm.gmptGlyphOrigin.y;
+ ix = gm.gmCellIncX;
+ iy = gm.gmCellIncY;
+ }
+ else
+ {
+ // Use generic GDI support to create bitmap of glyph
+ ZeroMemory(bitmapBuffer, iBufSize);
+
+ if (i >= tm.tmFirstChar && i <= tm.tmLastChar)
+ {
+ // Only create bitmaps for actual font glyphs
+ hBitmap = CreateBitmap(w, h, 1, 1, NULL);
+ SelectObject(hDCMem, hBitmap);
+ // Make bitmap of current font glyph
+ SetRect(&rect, 0, 0, w, h);
+ DrawText(hDCMem, (LPCTSTR)&i, 1, &rect,
+ DT_LEFT | DT_BOTTOM | DT_SINGLELINE | DT_NOCLIP);
+ // Make copy of bitmap in our local buffer
+ ZeroMemory(&bmi, sizeof(bmi));
+ bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+ bmi.bmiHeader.biWidth = w;
+ bmi.bmiHeader.biHeight = -h;
+ bmi.bmiHeader.biPlanes = 1;
+ bmi.bmiHeader.biBitCount = 1;
+ bmi.bmiHeader.biCompression = BI_RGB;
+ GetDIBits(hDCMem, hBitmap, 0, h, bitmapBuffer, &bmi, 0);
+ DeleteObject(hBitmap);
+ }
+ else
+ {
+ // Otherwise use empty display list for non-existing glyph
+ iBufSize = 0;
+ }
+
+ // Setup glBitmap parameters for current font glyph
+ ox = 0;
+ oy = tm.tmDescent;
+ ix = w;
+ iy = 0;
+ }
+
+ // Create an OpenGL display list.
+ glNewList((listBase + i), GL_COMPILE);
+
+ // Some fonts have no data for the space character, yet advertise
+ // a non-zero size.
+ if (0 == iBufSize)
+ {
+ glBitmap(0, 0, 0.0f, 0.0f, (GLfloat) ix, (GLfloat) iy, NULL);
+ }
+ else
+ {
+ // Invert the Glyph data.
+ InvertGlyphBitmap(w, h, bitmapBuffer, invertedBitmapBuffer);
+
+ // Render an OpenGL bitmap and invert the origin.
+ glBitmap(w, h,
+ (GLfloat) ox, (GLfloat) (h-oy),
+ (GLfloat) ix, (GLfloat) iy,
+ (GLubyte *) invertedBitmapBuffer);
+ }
+
+ // Close this display list.
+ glEndList();
+ }
+
+ if (bSuccessOrFail == FALSE)
+ {
+ DBGPRINT("DGL_UseFontBitmaps: Get glyph failed\n");
+ glDeleteLists((i+listBase), (i-first));
+ }
+
+ // Release resources used
+ DeleteObject(hFont);
+ DeleteDC(hDCMem);
+
+ if (bitmapBuffer)
+ HeapFree(GetProcessHeap(), 0, bitmapBuffer);
+
+ if (invertedBitmapBuffer)
+ HeapFree(GetProcessHeap(), 0, invertedBitmapBuffer);
+
+ return(bSuccessOrFail);
+}
+
+BOOL APIENTRY IntUseFontBitmapsA(HDC hDC, DWORD first, DWORD count, DWORD listBase)
+{
+ /* Just call IntUseFontBitmapsW for now */
+ return IntUseFontBitmapsW(hDC, first, count, listBase);
+}
+
+
+
+/*****************************************************************************
+* IntUseFontOutlines
+*
+* Converts a subrange of the glyphs in a TrueType font to OpenGL display
+* lists.
+*****************************************************************************/
+
+BOOL APIENTRY IntUseFontOutlinesW(HDC hDC, DWORD first, DWORD count, DWORD listBase,
FLOAT chordalDeviation,
+ FLOAT extrusion, INT format, GLYPHMETRICSFLOAT
*glyphMetricsFloatArray)
+{
+ DWORD glyphIndex;
+ UCHAR* glyphBuf;
+ DWORD glyphBufSize;
+
+ /*
+ * Flush any previous OpenGL errors. This allows us to check for
+ * new errors so they can be reported via the function return value.
+ */
+ while (glGetError() != GL_NO_ERROR);
+
+ /*
+ * Make sure that the current font can be sampled accurately.
+ */
+ hNewFont = CreateHighResolutionFont(hDC);
+
+ if (!hNewFont)
+ return FALSE;
+
+ hOldFont = SelectObject(hDC, hNewFont);
+ if (!hOldFont)
+ return FALSE;
+
+ /*
+ * Preallocate a buffer for the outline data, and track its size:
+ */
+ glyphBuf = (UCHAR*) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, glyphBufSize =
10240);
+
+ if (!glyphBuf)
+ return FALSE; /*WGL_STATUS_NOT_ENOUGH_MEMORY*/
+
+ /*
+ * Process each glyph in the given range:
+ */
+ for (glyphIndex = first; glyphIndex - first < count; ++glyphIndex)
+ {
+ GLYPHMETRICS glyphMetrics;
+ DWORD glyphSize;
+ static MAT2 matrix =
+ {
+ {0, 1}, {0, 0},
+ {0, 0}, {0, 1}
+ };
+ LPGLYPHMETRICSFLOAT glyphMetricsFloat = &glyphMetricsFloatArray[glyphIndex -
first];
+
+ /*
+ * Determine how much space is needed to store the glyph's
+ * outlines. If our glyph buffer isn't large enough,
+ * resize it.
+ */
+
+ glyphSize = GetGlyphOutline(hDC, glyphIndex, GGO_NATIVE, &glyphMetrics, 0,
NULL, &matrix);
+
+ if (glyphSize < 0)
+ return FALSE; /*WGL_STATUS_FAILURE*/
+
+ if (glyphSize > glyphBufSize)
+ {
+ HeapFree(GetProcessHeap(), 0, glyphBuf);
+ glyphBuf = (UCHAR*) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
glyphBufSize = glyphSize);
+ if (!glyphBuf)
+ return FALSE; /*WGL_STATUS_NOT_ENOUGH_MEMORY*/
+ }
+
+
+ /*
+ * Get the glyph's outlines.
+ */
+ if (GetGlyphOutline(hDC, glyphIndex, GGO_NATIVE, &glyphMetrics, glyphBufSize,
glyphBuf, &matrix) < 0)
+ {
+ HeapFree(GetProcessHeap(), 0, glyphBuf);
+ return FALSE; /*WGL_STATUS_FAILURE*/
+ }
+
+ glyphMetricsFloat->gmfBlackBoxX =
+ (FLOAT) glyphMetrics.gmBlackBoxX * ScaleFactor;
+ glyphMetricsFloat->gmfBlackBoxY =
+ (FLOAT) glyphMetrics.gmBlackBoxY * ScaleFactor;
+ glyphMetricsFloat->gmfptGlyphOrigin.x =
+ (FLOAT) glyphMetrics.gmptGlyphOrigin.x * ScaleFactor;
+ glyphMetricsFloat->gmfptGlyphOrigin.y =
+ (FLOAT) glyphMetrics.gmptGlyphOrigin.y * ScaleFactor;
+ glyphMetricsFloat->gmfCellIncX =
+ (FLOAT) glyphMetrics.gmCellIncX * ScaleFactor;
+ glyphMetricsFloat->gmfCellIncY =
+ (FLOAT) glyphMetrics.gmCellIncY * ScaleFactor;
+
+ /*
+ * Turn the glyph into a display list:
+ */
+ if (!MakeDisplayListFromGlyph((glyphIndex - first) + listBase, glyphBuf,
glyphSize, glyphMetricsFloat,
+ chordalDeviation + ScaleFactor, extrusion,
format))
+ {
+ HeapFree(GetProcessHeap(), 0, glyphBuf);
+ return FALSE; /*WGL_STATUS_FAILURE*/
+ }
+ }
+
+ /*
+ * Clean up temporary storage and return. If an error occurred,
+ * clear all OpenGL error flags and return FAILURE status;
+ * otherwise just return SUCCESS.
+ */
+ HeapFree(GetProcessHeap(), 0, glyphBuf);
+
+ DeleteObject(SelectObject(hDC, hOldFont));
+
+ if (glGetError() == GL_NO_ERROR)
+ {
+ return TRUE; /*WGL_STATUS_SUCCESS*/
+ }
+ else
+ {
+ while (glGetError() != GL_NO_ERROR);
+
+ return FALSE; /*WGL_STATUS_FAILURE*/
+ }
+}
+
+BOOL APIENTRY IntUseFontOutlinesA(HDC hDC, DWORD first, DWORD count, DWORD listBase,
FLOAT chordalDeviation,
+ FLOAT extrusion, INT format, GLYPHMETRICSFLOAT
*glyphMetricsFloatArray)
+{
+ /* Just call IntUseFontOutlinesW for now */
+ return IntUseFontOutlinesW(hDC, first, count, listBase, chordalDeviation, extrusion,
format, glyphMetricsFloatArray);
+}
Propchange: trunk/reactos/dll/win32/opengl32/font.c
------------------------------------------------------------------------------
svn:eol-style = native
Modified: trunk/reactos/dll/win32/opengl32/opengl32.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/opengl32/opengl3…
==============================================================================
--- trunk/reactos/dll/win32/opengl32/opengl32.h [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/opengl32/opengl32.h [iso-8859-1] Wed Sep 30 14:12:56 2009
@@ -40,6 +40,7 @@
#include <ndk/ntndk.h>
#include <GL/gl.h>
+#include <GL/glu.h>
/* gl function list */
#include "glfuncs.h"
@@ -190,6 +191,14 @@
GLDRIVERDATA *OPENGL32_LoadICD( LPCWSTR driver );
BOOL OPENGL32_UnloadICD( GLDRIVERDATA *icd );
BOOL APIENTRY rosglMakeCurrent( HDC hdc, HGLRC hglrc );
+BOOL APIENTRY IntUseFontBitmapsA( HDC hDC, DWORD first, DWORD count, DWORD listBase );
+BOOL APIENTRY IntUseFontBitmapsW( HDC hDC, DWORD first, DWORD count, DWORD listBase );
+BOOL APIENTRY IntUseFontOutlinesA( HDC hDC, DWORD first, DWORD count, DWORD listBase,
+ FLOAT chordalDeviation, FLOAT extrusion, INT format,
+ GLYPHMETRICSFLOAT *glyphMetricsFloatArray );
+BOOL APIENTRY IntUseFontOutlinesW( HDC hDC, DWORD first, DWORD count, DWORD listBase,
+ FLOAT chordalDeviation, FLOAT extrusion, INT format,
+ GLYPHMETRICSFLOAT *glyphMetricsFloatArray );
/* empty gl functions from gl.c */
int WINAPI glEmptyFunc0( void );
Modified: trunk/reactos/dll/win32/opengl32/opengl32.rbuild
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/opengl32/opengl3…
==============================================================================
--- trunk/reactos/dll/win32/opengl32/opengl32.rbuild [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/opengl32/opengl32.rbuild [iso-8859-1] Wed Sep 30 14:12:56
2009
@@ -5,7 +5,9 @@
<library>gdi32</library>
<library>user32</library>
<library>advapi32</library>
+ <library>glu32</library>
<pch>opengl32.h</pch>
+ <file>font.c</file>
<file>gl.c</file>
<file>opengl32.c</file>
<file>wgl.c</file>
Modified: trunk/reactos/dll/win32/opengl32/wgl.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/opengl32/wgl.c?r…
==============================================================================
--- trunk/reactos/dll/win32/opengl32/wgl.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/opengl32/wgl.c [iso-8859-1] Wed Sep 30 14:12:56 2009
@@ -1209,23 +1209,18 @@
BOOL
APIENTRY
-rosglUseFontBitmapsA( HDC hdc, DWORD first, DWORD count, DWORD listBase )
-{
- UNIMPLEMENTED;
- SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
- return FALSE;
-}
-
-
-BOOL
-APIENTRY
-rosglUseFontBitmapsW( HDC hdc, DWORD first, DWORD count, DWORD listBase )
-{
- UNIMPLEMENTED;
- SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
- return FALSE;
-}
-
+rosglUseFontBitmapsA( HDC hdc, DWORD first, DWORD count, DWORD listBase )
+{
+ return IntUseFontBitmapsA(hdc, first, count, listBase);
+}
+
+
+BOOL
+APIENTRY
+rosglUseFontBitmapsW( HDC hdc, DWORD first, DWORD count, DWORD listBase )
+{
+ return IntUseFontBitmapsW(hdc, first, count, listBase);
+}
BOOL
APIENTRY
@@ -1233,9 +1228,7 @@
FLOAT deviation, FLOAT extrusion, int format,
GLYPHMETRICSFLOAT *pgmf )
{
- UNIMPLEMENTED;
- SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
- return FALSE;
+ return IntUseFontOutlinesA(hdc, first, count, listBase, deviation, extrusion, format,
pgmf);
}
@@ -1245,9 +1238,7 @@
FLOAT deviation, FLOAT extrusion, int format,
GLYPHMETRICSFLOAT *pgmf )
{
- UNIMPLEMENTED;
- SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
- return FALSE;
+ return IntUseFontOutlinesW(hdc, first, count, listBase, deviation, extrusion, format,
pgmf);
}
#ifdef __cplusplus
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