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Add common OpenGL version parsing + OpenGL 3 fixes

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- Parse OpenGL version in sdl_glimp.c to share with both renderers.
- Add GL_VERSION_ATLEAST(major, minor) macro.
- Get address of glGetStringi if using OpenGL 3.
- Fix glConfig.extensions_string when using GL3 core context in
opengl2 renderer.
- Make opengl1 renderer's gfxinfo support qglGetStringi too.
This commit is contained in:
Zack Middleton 2017-10-01 20:16:23 -05:00
parent 20573bce43
commit c9d12aa3f3
6 changed files with 89 additions and 25 deletions
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69
code/sdl/sdl_glimp.c
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@ -53,6 +53,8 @@ cvar_t *r_allowResize; // make window resizable
cvar_t *r_centerWindow;
cvar_t *r_sdlDriver;
int qglMajorVersion, qglMinorVersion;
void (APIENTRYP qglActiveTextureARB) (GLenum texture);
void (APIENTRYP qglClientActiveTextureARB) (GLenum texture);
void (APIENTRYP qglMultiTexCoord2fARB) (GLenum target, GLfloat s, GLfloat t);
@ -63,6 +65,7 @@ void (APIENTRYP qglUnlockArraysEXT) (void);
#define GLE(ret, name, ...) name##proc * qgl##name;
QGL_1_0_PROCS;
QGL_1_1_PROCS;
QGL_3_0_PROCS;
#undef GLE
/*
@ -224,6 +227,7 @@ Get addresses for OpenGL functions.
*/
static qboolean GLimp_GetProcAddresses( void ) {
qboolean success = qtrue;
const char *version;
#ifdef __SDL_NOGETPROCADDR__
#define GLE( ret, name, ... ) qgl##name = gl#name;
@ -235,8 +239,32 @@ static qboolean GLimp_GetProcAddresses( void ) {
}
#endif
QGL_1_0_PROCS;
QGL_1_1_PROCS;
// OpenGL 1.0
GLE(const GLubyte *, GetString, GLenum name)
if ( !qglGetString ) {
Com_Error( ERR_FATAL, "glGetString is NULL" );
}
version = (const char *)qglGetString( GL_VERSION );
if ( !version ) {
Com_Error( ERR_FATAL, "GL_VERSION is NULL\n" );
}
sscanf( version, "%d.%d", &qglMajorVersion, &qglMinorVersion );
// require OpenGL 1.1
if ( QGL_VERSION_ATLEAST( 1, 1 ) ) {
QGL_1_0_PROCS;
QGL_1_1_PROCS;
} else {
Com_Error( ERR_FATAL, "Unsupported OpenGL Version: %s\n", version );
}
if ( QGL_VERSION_ATLEAST( 3, 0 ) ) {
QGL_3_0_PROCS;
}
#undef GLE
@ -253,8 +281,12 @@ Clear addresses for OpenGL functions.
static void GLimp_ClearProcAddresses( void ) {
#define GLE( ret, name, ... ) qgl##name = NULL;
qglMajorVersion = 0;
qglMinorVersion = 0;
QGL_1_0_PROCS;
QGL_1_1_PROCS;
QGL_3_0_PROCS;
#undef GLE
}
@ -921,10 +953,37 @@ success:
if (*glConfig.renderer_string && glConfig.renderer_string[strlen(glConfig.renderer_string) - 1] == '\n')
glConfig.renderer_string[strlen(glConfig.renderer_string) - 1] = 0;
Q_strncpyz( glConfig.version_string, (char *) qglGetString (GL_VERSION), sizeof( glConfig.version_string ) );
if (qglGetString(GL_EXTENSIONS))
Q_strncpyz( glConfig.extensions_string, (char *) qglGetString (GL_EXTENSIONS), sizeof( glConfig.extensions_string ) );
// manually create extension list if using OpenGL 3
if ( qglGetStringi )
{
int i, numExtensions, extensionLength, listLength;
const char *extension;
qglGetIntegerv( GL_NUM_EXTENSIONS, &numExtensions );
listLength = 0;
for ( i = 0; i < numExtensions; i++ )
{
extension = (char *) qglGetStringi( GL_EXTENSIONS, i );
extensionLength = strlen( extension );
if ( ( listLength + extensionLength + 1 ) >= sizeof( glConfig.extensions_string ) )
break;
if ( i > 0 ) {
Q_strcat( glConfig.extensions_string, sizeof( glConfig.extensions_string ), " " );
listLength++;
}
Q_strcat( glConfig.extensions_string, sizeof( glConfig.extensions_string ), extension );
listLength += extensionLength;
}
}
else
Q_strncpyz( glConfig.extensions_string, "Not available (core context, fixme)", sizeof( glConfig.extensions_string ) );
{
Q_strncpyz( glConfig.extensions_string, (char *) qglGetString (GL_EXTENSIONS), sizeof( glConfig.extensions_string ) );
}
// initialize extensions
GLimp_InitExtensions( );