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OglMisc.c File Reference

#include <windows.h>
#include <gl/gl.h>
#include "DCommon.h"
#include "OglMisc.h"

Go to the source code of this file.

Functions

void InitMatrices (int width, int height)
geBoolean ExtensionExists (const char *extension)
void CkBlit24_32 (GLubyte *dstPtr, GLint dstWidth, GLint dstHeight, GLubyte *srcPtr, GLint srcWidth, GLint srcHeight)
void Blit32 (GLubyte *dstPtr, GLint dstPitch, GLubyte *srcPtr, GLint srcWidth, GLint srcHeight, GLint srcPitch)

Function Documentation

void Blit32 (  GLubyte *  dstPtr,
GLint  dstPitch,
GLubyte *  srcPtr,
GLint  srcWidth,
GLint  srcHeight,
GLint  srcPitch
) 
 

Definition at line 122 of file OglMisc.c.

References count. 

00124 {
00125         GLint count;
00126 
00127         for(count = 0; count < srcHeight; count++)
00128         {
00129                 memcpy(dstPtr, srcPtr, srcWidth * 4);
00130                 srcPtr += srcPitch * 4;
00131                 dstPtr += dstPitch * 4;
00132         }
00133 }

void CkBlit24_32 (  GLubyte *  dstPtr,
GLint  dstWidth,
GLint  dstHeight,
GLubyte *  srcPtr,
GLint  srcWidth,
GLint  srcHeight
) 
 

Definition at line 90 of file OglMisc.c.

References height, and width.

Referenced by THandle_Update(). 

00092 {
00093         GLint width, height;
00094         GLubyte *nextLine;
00095 
00096         memset(dstPtr, 0x00, dstWidth * dstHeight * 4);
00097 
00098 
00099         for(height = 0; height < srcHeight; height++)
00100         {
00101                 nextLine = (dstPtr + (dstWidth * 4));
00102 
00103                 for(width = 0; width < srcWidth; width++)
00104                 {
00105                         if(!(*srcPtr == 0x00 && *(srcPtr + 1) == 0x00 && *(srcPtr + 2) == 0x01))
00106                         {
00107                                 *dstPtr = *srcPtr;
00108                                 *(dstPtr + 1) = *(srcPtr + 1);
00109                                 *(dstPtr + 2) = *(srcPtr + 2);
00110                                 *(dstPtr + 3) = 0xFF;
00111                         }
00112 
00113                         srcPtr += 3;
00114                         dstPtr += 4;
00115                 }
00116 
00117                 dstPtr = nextLine;
00118         }
00119 }

geBoolean ExtensionExists (  const char *  extension  ) 
 

Definition at line 45 of file OglMisc.c.

References GE_FALSE, GE_TRUE, geBoolean, and NULL.

Referenced by DrvInit(). 

00046 {
00047         const GLubyte *extensions = NULL;
00048         const GLubyte *begin;
00049         GLubyte *cursor, *end;
00050 
00051         cursor = (GLubyte *) strchr(extension, ' ');
00052 
00053         if(cursor || *extension == '\0')
00054         {
00055                 return GE_FALSE;
00056         }
00057 
00058         extensions = glGetString(GL_EXTENSIONS);
00059 
00060         begin = extensions;
00061         
00062         while(GE_TRUE) 
00063         {
00064                 cursor = (GLubyte *) strstr((const char *) begin, extension);
00065 
00066                 if(!cursor)
00067                 {
00068                         break;
00069                 }
00070 
00071                 end = cursor + strlen(extension);
00072 
00073                 if(cursor == begin || *(cursor - 1) == ' ')
00074                 {
00075                         if (*end == ' ' || *end == '\0')
00076                         {
00077                                 return GE_TRUE;
00078                         }
00079                 }
00080                 
00081                 begin = end;
00082         }
00083 
00084         return GE_FALSE;
00085 }

void InitMatrices (  int  width,
int  height
) 
 

Definition at line 29 of file OglMisc.c.

References height, and width.

Referenced by DrvInit(). 

00030 {
00031         glMatrixMode(GL_PROJECTION);
00032         glLoadIdentity();
00033         glOrtho(0.0f, (GLfloat)width, 0.0f, (GLfloat)height, 0.0f, 1.0f);
00034         glMatrixMode(GL_MODELVIEW);
00035         glLoadIdentity();
00036         glViewport(0, 0, width, height);
00037 
00038         glScalef(1.0f, -1.0f, 1.0f);
00039         glTranslatef(0, 0 - (GLfloat)height, 0.0);
00040 }

Generated on Tue Sep 30 12:37:49 2003 for GTestAndEngine by doxygen 1.3.2