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570 lines
20 KiB
C
570 lines
20 KiB
C
/* Window-specific OpenGL functions implementation.
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*
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* Copyright (c) 1999 Lionel Ulmer
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* Copyright (c) 2005 Raphael Junqueira
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "opengl32.h"
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#include <math.h>
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WINE_DEFAULT_DEBUG_CHANNEL(wgl);
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/***********************************************************************
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* wglUseFontBitmaps_common
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*/
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static BOOL wglUseFontBitmaps_common( HDC hdc, DWORD first, DWORD count, DWORD listBase, BOOL unicode )
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{
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const GLDISPATCHTABLE * funcs = IntGetCurrentDispatchTable();
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GLYPHMETRICS gm;
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unsigned int glyph, size = 0;
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void *bitmap = NULL, *gl_bitmap = NULL;
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int org_alignment;
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BOOL ret = TRUE;
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funcs->GetIntegerv(GL_UNPACK_ALIGNMENT, &org_alignment);
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funcs->PixelStorei(GL_UNPACK_ALIGNMENT, 4);
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for (glyph = first; glyph < first + count; glyph++) {
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static const MAT2 identity = { {0,1},{0,0},{0,0},{0,1} };
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unsigned int needed_size, height, width, width_int;
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if (unicode)
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needed_size = GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity);
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else
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needed_size = GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm, 0, NULL, &identity);
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TRACE("Glyph: %3d / List: %d size %d\n", glyph, listBase, needed_size);
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if (needed_size == GDI_ERROR) {
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ret = FALSE;
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break;
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}
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if (needed_size > size) {
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size = needed_size;
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HeapFree(GetProcessHeap(), 0, bitmap);
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HeapFree(GetProcessHeap(), 0, gl_bitmap);
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bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
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gl_bitmap = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
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}
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if (unicode)
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ret = (GetGlyphOutlineW(hdc, glyph, GGO_BITMAP, &gm, size, bitmap, &identity) != GDI_ERROR);
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else
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ret = (GetGlyphOutlineA(hdc, glyph, GGO_BITMAP, &gm, size, bitmap, &identity) != GDI_ERROR);
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if (!ret) break;
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if (TRACE_ON(wgl)) {
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unsigned int bitmask;
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unsigned char *bitmap_ = bitmap;
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TRACE(" - bbox: %d x %d\n", gm.gmBlackBoxX, gm.gmBlackBoxY);
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TRACE(" - origin: (%d, %d)\n", gm.gmptGlyphOrigin.x, gm.gmptGlyphOrigin.y);
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TRACE(" - increment: %d - %d\n", gm.gmCellIncX, gm.gmCellIncY);
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if (needed_size != 0) {
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TRACE(" - bitmap:\n");
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for (height = 0; height < gm.gmBlackBoxY; height++) {
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TRACE(" ");
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for (width = 0, bitmask = 0x80; width < gm.gmBlackBoxX; width++, bitmask >>= 1) {
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if (bitmask == 0) {
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bitmap_ += 1;
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bitmask = 0x80;
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}
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if (*bitmap_ & bitmask)
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TRACE("*");
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else
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TRACE(" ");
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}
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bitmap_ += (4 - ((UINT_PTR)bitmap_ & 0x03));
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TRACE("\n");
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}
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}
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}
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/* In OpenGL, the bitmap is drawn from the bottom to the top... So we need to invert the
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* glyph for it to be drawn properly.
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*/
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if (needed_size != 0) {
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width_int = (gm.gmBlackBoxX + 31) / 32;
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for (height = 0; height < gm.gmBlackBoxY; height++) {
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for (width = 0; width < width_int; width++) {
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((int *) gl_bitmap)[(gm.gmBlackBoxY - height - 1) * width_int + width] =
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((int *) bitmap)[height * width_int + width];
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}
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}
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}
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funcs->NewList(listBase++, GL_COMPILE);
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if (needed_size != 0) {
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funcs->Bitmap(gm.gmBlackBoxX, gm.gmBlackBoxY,
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0 - gm.gmptGlyphOrigin.x, (int) gm.gmBlackBoxY - gm.gmptGlyphOrigin.y,
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gm.gmCellIncX, gm.gmCellIncY,
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gl_bitmap);
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} else {
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/* This is the case of 'empty' glyphs like the space character */
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funcs->Bitmap(0, 0, 0, 0, gm.gmCellIncX, gm.gmCellIncY, NULL);
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}
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funcs->EndList();
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}
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funcs->PixelStorei(GL_UNPACK_ALIGNMENT, org_alignment);
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HeapFree(GetProcessHeap(), 0, bitmap);
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HeapFree(GetProcessHeap(), 0, gl_bitmap);
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return ret;
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}
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/***********************************************************************
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* wglUseFontBitmapsA (OPENGL32.@)
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*/
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BOOL WINAPI wglUseFontBitmapsA(HDC hdc, DWORD first, DWORD count, DWORD listBase)
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{
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return wglUseFontBitmaps_common( hdc, first, count, listBase, FALSE );
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}
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/***********************************************************************
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* wglUseFontBitmapsW (OPENGL32.@)
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*/
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BOOL WINAPI wglUseFontBitmapsW(HDC hdc, DWORD first, DWORD count, DWORD listBase)
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{
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return wglUseFontBitmaps_common( hdc, first, count, listBase, TRUE );
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}
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/* FIXME: should probably have a glu.h header */
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typedef struct GLUtesselator GLUtesselator;
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typedef void (WINAPI *_GLUfuncptr)(void);
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#define GLU_TESS_BEGIN 100100
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#define GLU_TESS_VERTEX 100101
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#define GLU_TESS_END 100102
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static GLUtesselator * (WINAPI *pgluNewTess)(void);
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static void (WINAPI *pgluDeleteTess)(GLUtesselator *tess);
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static void (WINAPI *pgluTessNormal)(GLUtesselator *tess, GLdouble x, GLdouble y, GLdouble z);
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static void (WINAPI *pgluTessBeginPolygon)(GLUtesselator *tess, void *polygon_data);
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static void (WINAPI *pgluTessEndPolygon)(GLUtesselator *tess);
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static void (WINAPI *pgluTessCallback)(GLUtesselator *tess, GLenum which, _GLUfuncptr fn);
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static void (WINAPI *pgluTessBeginContour)(GLUtesselator *tess);
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static void (WINAPI *pgluTessEndContour)(GLUtesselator *tess);
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static void (WINAPI *pgluTessVertex)(GLUtesselator *tess, GLdouble *location, GLvoid* data);
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static HMODULE load_libglu(void)
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{
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static const WCHAR glu32W[] = {'g','l','u','3','2','.','d','l','l',0};
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static int already_loaded;
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static HMODULE module;
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if (already_loaded) return module;
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already_loaded = 1;
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TRACE("Trying to load GLU library\n");
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module = LoadLibraryW( glu32W );
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if (!module)
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{
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WARN("Failed to load glu32\n");
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return NULL;
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}
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#define LOAD_FUNCPTR(f) p##f = (void *)GetProcAddress( module, #f )
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LOAD_FUNCPTR(gluNewTess);
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LOAD_FUNCPTR(gluDeleteTess);
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LOAD_FUNCPTR(gluTessBeginContour);
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LOAD_FUNCPTR(gluTessNormal);
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LOAD_FUNCPTR(gluTessBeginPolygon);
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LOAD_FUNCPTR(gluTessCallback);
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LOAD_FUNCPTR(gluTessEndContour);
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LOAD_FUNCPTR(gluTessEndPolygon);
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LOAD_FUNCPTR(gluTessVertex);
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#undef LOAD_FUNCPTR
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return module;
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}
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static void fixed_to_double(POINTFX fixed, UINT em_size, GLdouble vertex[3])
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{
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vertex[0] = (fixed.x.value + (GLdouble)fixed.x.fract / (1 << 16)) / em_size;
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vertex[1] = (fixed.y.value + (GLdouble)fixed.y.fract / (1 << 16)) / em_size;
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vertex[2] = 0.0;
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}
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static void WINAPI tess_callback_vertex(GLvoid *vertex)
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{
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const GLDISPATCHTABLE * funcs = IntGetCurrentDispatchTable();
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GLdouble *dbl = vertex;
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TRACE("%f, %f, %f\n", dbl[0], dbl[1], dbl[2]);
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funcs->Vertex3dv(vertex);
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}
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static void WINAPI tess_callback_begin(GLenum which)
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{
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const GLDISPATCHTABLE * funcs = IntGetCurrentDispatchTable();
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TRACE("%d\n", which);
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funcs->Begin(which);
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}
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static void WINAPI tess_callback_end(void)
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{
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const GLDISPATCHTABLE * funcs = IntGetCurrentDispatchTable();
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TRACE("\n");
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funcs->End();
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}
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typedef struct _bezier_vector {
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GLdouble x;
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GLdouble y;
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} bezier_vector;
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static double bezier_deviation_squared(const bezier_vector *p)
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{
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bezier_vector deviation;
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bezier_vector vertex;
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bezier_vector base;
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double base_length;
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double dot;
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vertex.x = (p[0].x + p[1].x*2 + p[2].x)/4 - p[0].x;
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vertex.y = (p[0].y + p[1].y*2 + p[2].y)/4 - p[0].y;
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base.x = p[2].x - p[0].x;
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base.y = p[2].y - p[0].y;
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base_length = sqrt(base.x*base.x + base.y*base.y);
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base.x /= base_length;
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base.y /= base_length;
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dot = base.x*vertex.x + base.y*vertex.y;
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dot = min(max(dot, 0.0), base_length);
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base.x *= dot;
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base.y *= dot;
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deviation.x = vertex.x-base.x;
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deviation.y = vertex.y-base.y;
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return deviation.x*deviation.x + deviation.y*deviation.y;
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}
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static int bezier_approximate(const bezier_vector *p, bezier_vector *points, FLOAT deviation)
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{
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bezier_vector first_curve[3];
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bezier_vector second_curve[3];
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bezier_vector vertex;
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int total_vertices;
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if(bezier_deviation_squared(p) <= deviation*deviation)
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{
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if(points)
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*points = p[2];
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return 1;
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}
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vertex.x = (p[0].x + p[1].x*2 + p[2].x)/4;
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vertex.y = (p[0].y + p[1].y*2 + p[2].y)/4;
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first_curve[0] = p[0];
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first_curve[1].x = (p[0].x + p[1].x)/2;
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first_curve[1].y = (p[0].y + p[1].y)/2;
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first_curve[2] = vertex;
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second_curve[0] = vertex;
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second_curve[1].x = (p[2].x + p[1].x)/2;
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second_curve[1].y = (p[2].y + p[1].y)/2;
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second_curve[2] = p[2];
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total_vertices = bezier_approximate(first_curve, points, deviation);
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if(points)
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points += total_vertices;
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total_vertices += bezier_approximate(second_curve, points, deviation);
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return total_vertices;
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}
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/***********************************************************************
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* wglUseFontOutlines_common
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*/
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static BOOL wglUseFontOutlines_common(HDC hdc,
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DWORD first,
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DWORD count,
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DWORD listBase,
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FLOAT deviation,
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FLOAT extrusion,
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int format,
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LPGLYPHMETRICSFLOAT lpgmf,
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BOOL unicode)
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{
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const GLDISPATCHTABLE * funcs = IntGetCurrentDispatchTable();
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UINT glyph;
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const MAT2 identity = {{0,1},{0,0},{0,0},{0,1}};
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GLUtesselator *tess = NULL;
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LOGFONTW lf;
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HFONT old_font, unscaled_font;
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UINT em_size = 1024;
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RECT rc;
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TRACE("(%p, %d, %d, %d, %f, %f, %d, %p, %s)\n", hdc, first, count,
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listBase, deviation, extrusion, format, lpgmf, unicode ? "W" : "A");
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if(deviation <= 0.0)
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deviation = 1.0/em_size;
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if(format == WGL_FONT_POLYGONS)
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{
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if (!load_libglu())
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{
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ERR("glu32 is required for this function but isn't available\n");
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return FALSE;
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}
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tess = pgluNewTess();
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if(!tess) return FALSE;
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pgluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)tess_callback_vertex);
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pgluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)tess_callback_begin);
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pgluTessCallback(tess, GLU_TESS_END, tess_callback_end);
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}
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GetObjectW(GetCurrentObject(hdc, OBJ_FONT), sizeof(lf), &lf);
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rc.left = rc.right = rc.bottom = 0;
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rc.top = em_size;
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DPtoLP(hdc, (POINT*)&rc, 2);
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lf.lfHeight = -abs(rc.top - rc.bottom);
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lf.lfOrientation = lf.lfEscapement = 0;
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unscaled_font = CreateFontIndirectW(&lf);
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old_font = SelectObject(hdc, unscaled_font);
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for (glyph = first; glyph < first + count; glyph++)
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{
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DWORD needed;
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GLYPHMETRICS gm;
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BYTE *buf;
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TTPOLYGONHEADER *pph;
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TTPOLYCURVE *ppc;
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GLdouble *vertices = NULL, *vertices_temp = NULL;
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int vertex_total = -1;
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if(unicode)
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needed = GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
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else
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needed = GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, 0, NULL, &identity);
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if(needed == GDI_ERROR)
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goto error;
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buf = HeapAlloc(GetProcessHeap(), 0, needed);
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if(!buf)
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goto error;
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if(unicode)
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GetGlyphOutlineW(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
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else
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GetGlyphOutlineA(hdc, glyph, GGO_NATIVE, &gm, needed, buf, &identity);
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TRACE("glyph %d\n", glyph);
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if(lpgmf)
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{
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lpgmf->gmfBlackBoxX = (float)gm.gmBlackBoxX / em_size;
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lpgmf->gmfBlackBoxY = (float)gm.gmBlackBoxY / em_size;
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lpgmf->gmfptGlyphOrigin.x = (float)gm.gmptGlyphOrigin.x / em_size;
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lpgmf->gmfptGlyphOrigin.y = (float)gm.gmptGlyphOrigin.y / em_size;
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lpgmf->gmfCellIncX = (float)gm.gmCellIncX / em_size;
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lpgmf->gmfCellIncY = (float)gm.gmCellIncY / em_size;
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TRACE("%fx%f at %f,%f inc %f,%f\n", lpgmf->gmfBlackBoxX, lpgmf->gmfBlackBoxY,
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lpgmf->gmfptGlyphOrigin.x, lpgmf->gmfptGlyphOrigin.y, lpgmf->gmfCellIncX, lpgmf->gmfCellIncY);
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lpgmf++;
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}
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funcs->NewList(listBase++, GL_COMPILE);
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funcs->FrontFace(GL_CCW);
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if(format == WGL_FONT_POLYGONS)
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{
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funcs->Normal3d(0.0, 0.0, 1.0);
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pgluTessNormal(tess, 0, 0, 1);
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pgluTessBeginPolygon(tess, NULL);
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}
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while(!vertices)
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{
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if(vertex_total != -1)
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vertices_temp = vertices = HeapAlloc(GetProcessHeap(), 0, vertex_total * 3 * sizeof(GLdouble));
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vertex_total = 0;
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pph = (TTPOLYGONHEADER*)buf;
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while((BYTE*)pph < buf + needed)
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{
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GLdouble previous[3];
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fixed_to_double(pph->pfxStart, em_size, previous);
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if(vertices)
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TRACE("\tstart %d, %d\n", pph->pfxStart.x.value, pph->pfxStart.y.value);
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if(format == WGL_FONT_POLYGONS)
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pgluTessBeginContour(tess);
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else
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funcs->Begin(GL_LINE_LOOP);
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if(vertices)
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{
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fixed_to_double(pph->pfxStart, em_size, vertices);
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if(format == WGL_FONT_POLYGONS)
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pgluTessVertex(tess, vertices, vertices);
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else
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funcs->Vertex3d(vertices[0], vertices[1], vertices[2]);
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vertices += 3;
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}
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vertex_total++;
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ppc = (TTPOLYCURVE*)((char*)pph + sizeof(*pph));
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while((char*)ppc < (char*)pph + pph->cb)
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{
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int i, j;
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int num;
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switch(ppc->wType) {
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case TT_PRIM_LINE:
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for(i = 0; i < ppc->cpfx; i++)
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{
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if(vertices)
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{
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TRACE("\t\tline to %d, %d\n",
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ppc->apfx[i].x.value, ppc->apfx[i].y.value);
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fixed_to_double(ppc->apfx[i], em_size, vertices);
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if(format == WGL_FONT_POLYGONS)
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pgluTessVertex(tess, vertices, vertices);
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else
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funcs->Vertex3d(vertices[0], vertices[1], vertices[2]);
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vertices += 3;
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}
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fixed_to_double(ppc->apfx[i], em_size, previous);
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vertex_total++;
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}
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break;
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case TT_PRIM_QSPLINE:
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for(i = 0; i < ppc->cpfx-1; i++)
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{
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bezier_vector curve[3];
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bezier_vector *points;
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GLdouble curve_vertex[3];
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if(vertices)
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TRACE("\t\tcurve %d,%d %d,%d\n",
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|
ppc->apfx[i].x.value, ppc->apfx[i].y.value,
|
|
ppc->apfx[i + 1].x.value, ppc->apfx[i + 1].y.value);
|
|
|
|
curve[0].x = previous[0];
|
|
curve[0].y = previous[1];
|
|
fixed_to_double(ppc->apfx[i], em_size, curve_vertex);
|
|
curve[1].x = curve_vertex[0];
|
|
curve[1].y = curve_vertex[1];
|
|
fixed_to_double(ppc->apfx[i + 1], em_size, curve_vertex);
|
|
curve[2].x = curve_vertex[0];
|
|
curve[2].y = curve_vertex[1];
|
|
if(i < ppc->cpfx-2)
|
|
{
|
|
curve[2].x = (curve[1].x + curve[2].x)/2;
|
|
curve[2].y = (curve[1].y + curve[2].y)/2;
|
|
}
|
|
num = bezier_approximate(curve, NULL, deviation);
|
|
points = HeapAlloc(GetProcessHeap(), 0, num*sizeof(bezier_vector));
|
|
num = bezier_approximate(curve, points, deviation);
|
|
vertex_total += num;
|
|
if(vertices)
|
|
{
|
|
for(j=0; j<num; j++)
|
|
{
|
|
TRACE("\t\t\tvertex at %f,%f\n", points[j].x, points[j].y);
|
|
vertices[0] = points[j].x;
|
|
vertices[1] = points[j].y;
|
|
vertices[2] = 0.0;
|
|
if(format == WGL_FONT_POLYGONS)
|
|
pgluTessVertex(tess, vertices, vertices);
|
|
else
|
|
funcs->Vertex3d(vertices[0], vertices[1], vertices[2]);
|
|
vertices += 3;
|
|
}
|
|
}
|
|
HeapFree(GetProcessHeap(), 0, points);
|
|
previous[0] = curve[2].x;
|
|
previous[1] = curve[2].y;
|
|
}
|
|
break;
|
|
default:
|
|
ERR("\t\tcurve type = %d\n", ppc->wType);
|
|
if(format == WGL_FONT_POLYGONS)
|
|
pgluTessEndContour(tess);
|
|
else
|
|
funcs->End();
|
|
goto error_in_list;
|
|
}
|
|
|
|
ppc = (TTPOLYCURVE*)((char*)ppc + sizeof(*ppc) +
|
|
(ppc->cpfx - 1) * sizeof(POINTFX));
|
|
}
|
|
if(format == WGL_FONT_POLYGONS)
|
|
pgluTessEndContour(tess);
|
|
else
|
|
funcs->End();
|
|
pph = (TTPOLYGONHEADER*)((char*)pph + pph->cb);
|
|
}
|
|
}
|
|
|
|
error_in_list:
|
|
if(format == WGL_FONT_POLYGONS)
|
|
pgluTessEndPolygon(tess);
|
|
funcs->Translated((GLdouble)gm.gmCellIncX / em_size, (GLdouble)gm.gmCellIncY / em_size, 0.0);
|
|
funcs->EndList();
|
|
|
|
HeapFree(GetProcessHeap(), 0, buf);
|
|
|
|
if(vertices_temp)
|
|
HeapFree(GetProcessHeap(), 0, vertices_temp);
|
|
}
|
|
|
|
error:
|
|
DeleteObject(SelectObject(hdc, old_font));
|
|
if(format == WGL_FONT_POLYGONS)
|
|
pgluDeleteTess(tess);
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
/***********************************************************************
|
|
* wglUseFontOutlinesA (OPENGL32.@)
|
|
*/
|
|
BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
|
|
DWORD first,
|
|
DWORD count,
|
|
DWORD listBase,
|
|
FLOAT deviation,
|
|
FLOAT extrusion,
|
|
int format,
|
|
LPGLYPHMETRICSFLOAT lpgmf)
|
|
{
|
|
return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, FALSE);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* wglUseFontOutlinesW (OPENGL32.@)
|
|
*/
|
|
BOOL WINAPI wglUseFontOutlinesW(HDC hdc,
|
|
DWORD first,
|
|
DWORD count,
|
|
DWORD listBase,
|
|
FLOAT deviation,
|
|
FLOAT extrusion,
|
|
int format,
|
|
LPGLYPHMETRICSFLOAT lpgmf)
|
|
{
|
|
return wglUseFontOutlines_common(hdc, first, count, listBase, deviation, extrusion, format, lpgmf, TRUE);
|
|
} |