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-rw-r--r--libraries/irrlicht-1.8.1/source/Irrlicht/COpenGLExtensionHandler.cpp804
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diff --git a/libraries/irrlicht-1.8.1/source/Irrlicht/COpenGLExtensionHandler.cpp b/libraries/irrlicht-1.8.1/source/Irrlicht/COpenGLExtensionHandler.cpp
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1// Copyright (C) 2002-2012 Nikolaus Gebhardt
2// This file is part of the "Irrlicht Engine".
3// For conditions of distribution and use, see copyright notice in irrlicht.h
4
5#include "IrrCompileConfig.h"
6
7#ifdef _IRR_COMPILE_WITH_OPENGL_
8
9#include "COpenGLExtensionHandler.h"
10#include "irrString.h"
11#include "SMaterial.h" // for MATERIAL_MAX_TEXTURES
12#include "fast_atof.h"
13
14namespace irr
15{
16namespace video
17{
18
19COpenGLExtensionHandler::COpenGLExtensionHandler() :
20 StencilBuffer(false), MultiTextureExtension(false),
21 TextureCompressionExtension(false),
22 MaxSupportedTextures(1), MaxTextureUnits(1), MaxLights(1),
23 MaxAnisotropy(1), MaxUserClipPlanes(0), MaxAuxBuffers(0),
24 MaxMultipleRenderTargets(1), MaxIndices(65535),
25 MaxTextureSize(1), MaxGeometryVerticesOut(0),
26 MaxTextureLODBias(0.f), Version(0), ShaderLanguageVersion(0),
27 OcclusionQuerySupport(false)
28#ifdef _IRR_OPENGL_USE_EXTPOINTER_
29 ,pGlActiveTextureARB(0), pGlClientActiveTextureARB(0),
30 pGlGenProgramsARB(0), pGlGenProgramsNV(0),
31 pGlBindProgramARB(0), pGlBindProgramNV(0),
32 pGlDeleteProgramsARB(0), pGlDeleteProgramsNV(0),
33 pGlProgramStringARB(0), pGlLoadProgramNV(0),
34 pGlProgramLocalParameter4fvARB(0),
35 pGlCreateShaderObjectARB(0), pGlShaderSourceARB(0),
36 pGlCompileShaderARB(0), pGlCreateProgramObjectARB(0), pGlAttachObjectARB(0),
37 pGlLinkProgramARB(0), pGlUseProgramObjectARB(0), pGlDeleteObjectARB(0),
38 pGlCreateProgram(0), pGlUseProgram(0),
39 pGlDeleteProgram(0), pGlDeleteShader(0),
40 pGlGetAttachedObjectsARB(0), pGlGetAttachedShaders(0),
41 pGlCreateShader(0), pGlShaderSource(0), pGlCompileShader(0),
42 pGlAttachShader(0), pGlLinkProgram(0),
43 pGlGetInfoLogARB(0), pGlGetShaderInfoLog(0), pGlGetProgramInfoLog(0),
44 pGlGetObjectParameterivARB(0), pGlGetShaderiv(0), pGlGetProgramiv(0),
45 pGlGetUniformLocationARB(0), pGlGetUniformLocation(0),
46 pGlUniform1fvARB(0), pGlUniform2fvARB(0), pGlUniform3fvARB(0), pGlUniform4fvARB(0),
47 pGlUniform1ivARB(0), pGlUniform2ivARB(0), pGlUniform3ivARB(0), pGlUniform4ivARB(0),
48 pGlUniformMatrix2fvARB(0), pGlUniformMatrix3fvARB(0), pGlUniformMatrix4fvARB(0),
49 pGlGetActiveUniformARB(0), pGlGetActiveUniform(0),
50 pGlPointParameterfARB(0), pGlPointParameterfvARB(0),
51 pGlStencilFuncSeparate(0), pGlStencilOpSeparate(0),
52 pGlStencilFuncSeparateATI(0), pGlStencilOpSeparateATI(0),
53 pGlCompressedTexImage2D(0),
54 // ARB framebuffer object
55 pGlBindFramebuffer(0), pGlDeleteFramebuffers(0), pGlGenFramebuffers(0),
56 pGlCheckFramebufferStatus(0), pGlFramebufferTexture2D(0),
57 pGlBindRenderbuffer(0), pGlDeleteRenderbuffers(0), pGlGenRenderbuffers(0),
58 pGlRenderbufferStorage(0), pGlFramebufferRenderbuffer(0), pGlGenerateMipmap(0),
59 // EXT framebuffer object
60 pGlBindFramebufferEXT(0), pGlDeleteFramebuffersEXT(0), pGlGenFramebuffersEXT(0),
61 pGlCheckFramebufferStatusEXT(0), pGlFramebufferTexture2DEXT(0),
62 pGlBindRenderbufferEXT(0), pGlDeleteRenderbuffersEXT(0), pGlGenRenderbuffersEXT(0),
63 pGlRenderbufferStorageEXT(0), pGlFramebufferRenderbufferEXT(0), pGlGenerateMipmapEXT(0),
64 // MRTs
65 pGlDrawBuffersARB(0), pGlDrawBuffersATI(0),
66 pGlGenBuffersARB(0), pGlBindBufferARB(0), pGlBufferDataARB(0), pGlDeleteBuffersARB(0),
67 pGlBufferSubDataARB(0), pGlGetBufferSubDataARB(0), pGlMapBufferARB(0), pGlUnmapBufferARB(0),
68 pGlIsBufferARB(0), pGlGetBufferParameterivARB(0), pGlGetBufferPointervARB(0),
69 pGlProvokingVertexARB(0), pGlProvokingVertexEXT(0),
70 pGlColorMaskIndexedEXT(0), pGlEnableIndexedEXT(0), pGlDisableIndexedEXT(0),
71 pGlBlendFuncIndexedAMD(0), pGlBlendFunciARB(0),
72 pGlBlendEquationIndexedAMD(0), pGlBlendEquationiARB(0),
73 pGlProgramParameteriARB(0), pGlProgramParameteriEXT(0),
74 pGlGenQueriesARB(0), pGlDeleteQueriesARB(0), pGlIsQueryARB(0),
75 pGlBeginQueryARB(0), pGlEndQueryARB(0), pGlGetQueryivARB(0),
76 pGlGetQueryObjectivARB(0), pGlGetQueryObjectuivARB(0),
77 pGlGenOcclusionQueriesNV(0), pGlDeleteOcclusionQueriesNV(0),
78 pGlIsOcclusionQueryNV(0), pGlBeginOcclusionQueryNV(0),
79 pGlEndOcclusionQueryNV(0), pGlGetOcclusionQueryivNV(0),
80 pGlGetOcclusionQueryuivNV(0),
81 pGlBlendEquationEXT(0), pGlBlendEquation(0)
82#if defined(GLX_SGI_swap_control)
83 ,pGlxSwapIntervalSGI(0)
84#endif
85#if defined(GLX_EXT_swap_control)
86 ,pGlxSwapIntervalEXT(0)
87#endif
88#if defined(WGL_EXT_swap_control)
89 ,pWglSwapIntervalEXT(0)
90#endif
91#if defined(GLX_MESA_swap_control)
92 ,pGlxSwapIntervalMESA(0)
93#endif
94#endif // _IRR_OPENGL_USE_EXTPOINTER_
95{
96 for (u32 i=0; i<IRR_OpenGL_Feature_Count; ++i)
97 FeatureAvailable[i]=false;
98 DimAliasedLine[0]=1.f;
99 DimAliasedLine[1]=1.f;
100 DimAliasedPoint[0]=1.f;
101 DimAliasedPoint[1]=1.f;
102 DimSmoothedLine[0]=1.f;
103 DimSmoothedLine[1]=1.f;
104 DimSmoothedPoint[0]=1.f;
105 DimSmoothedPoint[1]=1.f;
106}
107
108
109void COpenGLExtensionHandler::dump() const
110{
111 for (u32 i=0; i<IRR_OpenGL_Feature_Count; ++i)
112 os::Printer::log(OpenGLFeatureStrings[i], FeatureAvailable[i]?" true":" false");
113}
114
115
116void COpenGLExtensionHandler::dumpFramebufferFormats() const
117{
118#ifdef _IRR_WINDOWS_API_
119 HDC hdc=wglGetCurrentDC();
120 core::stringc wglExtensions;
121#ifdef WGL_ARB_extensions_string
122 PFNWGLGETEXTENSIONSSTRINGARBPROC irrGetExtensionsString = (PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
123 if (irrGetExtensionsString)
124 wglExtensions = irrGetExtensionsString(hdc);
125#elif defined(WGL_EXT_extensions_string)
126 PFNWGLGETEXTENSIONSSTRINGEXTPROC irrGetExtensionsString = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)wglGetProcAddress("wglGetExtensionsStringEXT");
127 if (irrGetExtensionsString)
128 wglExtensions = irrGetExtensionsString(hdc);
129#endif
130 const bool pixel_format_supported = (wglExtensions.find("WGL_ARB_pixel_format") != -1);
131 const bool multi_sample_supported = ((wglExtensions.find("WGL_ARB_multisample") != -1) ||
132 (wglExtensions.find("WGL_EXT_multisample") != -1) || (wglExtensions.find("WGL_3DFX_multisample") != -1) );
133#ifdef _DEBUG
134 os::Printer::log("WGL_extensions", wglExtensions);
135#endif
136
137#ifdef WGL_ARB_pixel_format
138 PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormat_ARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
139 if (pixel_format_supported && wglChoosePixelFormat_ARB)
140 {
141 // This value determines the number of samples used for antialiasing
142 // My experience is that 8 does not show a big
143 // improvement over 4, but 4 shows a big improvement
144 // over 2.
145
146 PFNWGLGETPIXELFORMATATTRIBIVARBPROC wglGetPixelFormatAttribiv_ARB = (PFNWGLGETPIXELFORMATATTRIBIVARBPROC)wglGetProcAddress("wglGetPixelFormatAttribivARB");
147 if (wglGetPixelFormatAttribiv_ARB)
148 {
149 int vals[128];
150 int atts[] = {
151 WGL_NUMBER_PIXEL_FORMATS_ARB,
152 WGL_DRAW_TO_BITMAP_ARB,
153 WGL_ACCELERATION_ARB,
154 WGL_NEED_PALETTE_ARB,
155 WGL_NEED_SYSTEM_PALETTE_ARB,
156 WGL_SWAP_LAYER_BUFFERS_ARB,
157 WGL_SWAP_METHOD_ARB,
158 WGL_NUMBER_OVERLAYS_ARB,
159 WGL_NUMBER_UNDERLAYS_ARB,
160 WGL_TRANSPARENT_ARB,
161 WGL_TRANSPARENT_RED_VALUE_ARB,
162 WGL_TRANSPARENT_GREEN_VALUE_ARB,
163 WGL_TRANSPARENT_BLUE_VALUE_ARB,
164 WGL_TRANSPARENT_ALPHA_VALUE_ARB,
165 WGL_TRANSPARENT_INDEX_VALUE_ARB,
166 WGL_SHARE_DEPTH_ARB,
167 WGL_SHARE_STENCIL_ARB,
168 WGL_SHARE_ACCUM_ARB,
169 WGL_SUPPORT_GDI_ARB,
170 WGL_SUPPORT_OPENGL_ARB,
171 WGL_DOUBLE_BUFFER_ARB,
172 WGL_STEREO_ARB,
173 WGL_PIXEL_TYPE_ARB,
174 WGL_COLOR_BITS_ARB,
175 WGL_RED_BITS_ARB,
176 WGL_RED_SHIFT_ARB,
177 WGL_GREEN_BITS_ARB,
178 WGL_GREEN_SHIFT_ARB,
179 WGL_BLUE_BITS_ARB,
180 WGL_BLUE_SHIFT_ARB,
181 WGL_ALPHA_BITS_ARB,
182 WGL_ALPHA_SHIFT_ARB,
183 WGL_ACCUM_BITS_ARB,
184 WGL_ACCUM_RED_BITS_ARB,
185 WGL_ACCUM_GREEN_BITS_ARB,
186 WGL_ACCUM_BLUE_BITS_ARB,
187 WGL_ACCUM_ALPHA_BITS_ARB,
188 WGL_DEPTH_BITS_ARB,
189 WGL_STENCIL_BITS_ARB,
190 WGL_AUX_BUFFERS_ARB
191#ifdef WGL_ARB_render_texture
192 ,WGL_BIND_TO_TEXTURE_RGB_ARB //40
193 ,WGL_BIND_TO_TEXTURE_RGBA_ARB
194#endif
195#ifdef WGL_ARB_pbuffer
196 ,WGL_DRAW_TO_PBUFFER_ARB //42
197 ,WGL_MAX_PBUFFER_PIXELS_ARB
198 ,WGL_MAX_PBUFFER_WIDTH_ARB
199 ,WGL_MAX_PBUFFER_HEIGHT_ARB
200#endif
201#ifdef WGL_ARB_framebuffer_sRGB
202 ,WGL_FRAMEBUFFER_SRGB_CAPABLE_ARB //46
203#endif
204#ifdef WGL_ARB_multisample
205 ,WGL_SAMPLES_ARB //47
206 ,WGL_SAMPLE_BUFFERS_ARB
207#endif
208#ifdef WGL_EXT_depth_float
209 ,WGL_DEPTH_FLOAT_EXT //49
210#endif
211 ,0,0,0,0
212 };
213 size_t nums = sizeof(atts)/sizeof(int);
214 const bool depth_float_supported= (wglExtensions.find("WGL_EXT_depth_float") != -1);
215 if (!depth_float_supported)
216 {
217 memmove(&atts[49], &atts[50], (nums-50)*sizeof(int));
218 nums -= 1;
219 }
220 if (!multi_sample_supported)
221 {
222 memmove(&atts[47], &atts[49], (nums-49)*sizeof(int));
223 nums -= 2;
224 }
225 const bool framebuffer_sRGB_supported= (wglExtensions.find("WGL_ARB_framebuffer_sRGB") != -1);
226 if (!framebuffer_sRGB_supported)
227 {
228 memmove(&atts[46], &atts[47], (nums-47)*sizeof(int));
229 nums -= 1;
230 }
231 const bool pbuffer_supported = (wglExtensions.find("WGL_ARB_pbuffer") != -1);
232 if (!pbuffer_supported)
233 {
234 memmove(&atts[42], &atts[46], (nums-46)*sizeof(int));
235 nums -= 4;
236 }
237 const bool render_texture_supported = (wglExtensions.find("WGL_ARB_render_texture") != -1);
238 if (!render_texture_supported)
239 {
240 memmove(&atts[40], &atts[42], (nums-42)*sizeof(int));
241 nums -= 2;
242 }
243 wglGetPixelFormatAttribiv_ARB(hdc,0,0,1,atts,vals);
244 const int count = vals[0];
245 atts[0]=WGL_DRAW_TO_WINDOW_ARB;
246 for (int i=1; i<count; ++i)
247 {
248 memset(vals,0,sizeof(vals));
249#define tmplog(x,y) os::Printer::log(x, core::stringc(y).c_str())
250 const BOOL res = wglGetPixelFormatAttribiv_ARB(hdc,i,0,nums,atts,vals);
251 if (FALSE==res)
252 continue;
253 tmplog("Pixel format ",i);
254 u32 j=0;
255 tmplog("Draw to window " , vals[j]);
256 tmplog("Draw to bitmap " , vals[++j]);
257 ++j;
258 tmplog("Acceleration " , (vals[j]==WGL_NO_ACCELERATION_ARB?"No":
259 vals[j]==WGL_GENERIC_ACCELERATION_ARB?"Generic":vals[j]==WGL_FULL_ACCELERATION_ARB?"Full":"ERROR"));
260 tmplog("Need palette " , vals[++j]);
261 tmplog("Need system palette " , vals[++j]);
262 tmplog("Swap layer buffers " , vals[++j]);
263 ++j;
264 tmplog("Swap method " , (vals[j]==WGL_SWAP_EXCHANGE_ARB?"Exchange":
265 vals[j]==WGL_SWAP_COPY_ARB?"Copy":vals[j]==WGL_SWAP_UNDEFINED_ARB?"Undefined":"ERROR"));
266 tmplog("Number of overlays " , vals[++j]);
267 tmplog("Number of underlays " , vals[++j]);
268 tmplog("Transparent " , vals[++j]);
269 tmplog("Transparent red value " , vals[++j]);
270 tmplog("Transparent green value " , vals[++j]);
271 tmplog("Transparent blue value " , vals[++j]);
272 tmplog("Transparent alpha value " , vals[++j]);
273 tmplog("Transparent index value " , vals[++j]);
274 tmplog("Share depth " , vals[++j]);
275 tmplog("Share stencil " , vals[++j]);
276 tmplog("Share accum " , vals[++j]);
277 tmplog("Support GDI " , vals[++j]);
278 tmplog("Support OpenGL " , vals[++j]);
279 tmplog("Double Buffer " , vals[++j]);
280 tmplog("Stereo Buffer " , vals[++j]);
281 tmplog("Pixel type " , vals[++j]);
282 tmplog("Color bits" , vals[++j]);
283 tmplog("Red bits " , vals[++j]);
284 tmplog("Red shift " , vals[++j]);
285 tmplog("Green bits " , vals[++j]);
286 tmplog("Green shift " , vals[++j]);
287 tmplog("Blue bits " , vals[++j]);
288 tmplog("Blue shift " , vals[++j]);
289 tmplog("Alpha bits " , vals[++j]);
290 tmplog("Alpha Shift " , vals[++j]);
291 tmplog("Accum bits " , vals[++j]);
292 tmplog("Accum red bits " , vals[++j]);
293 tmplog("Accum green bits " , vals[++j]);
294 tmplog("Accum blue bits " , vals[++j]);
295 tmplog("Accum alpha bits " , vals[++j]);
296 tmplog("Depth bits " , vals[++j]);
297 tmplog("Stencil bits " , vals[++j]);
298 tmplog("Aux buffers " , vals[++j]);
299 if (render_texture_supported)
300 {
301 tmplog("Bind to texture RGB" , vals[++j]);
302 tmplog("Bind to texture RGBA" , vals[++j]);
303 }
304 if (pbuffer_supported)
305 {
306 tmplog("Draw to pbuffer" , vals[++j]);
307 tmplog("Max pbuffer pixels " , vals[++j]);
308 tmplog("Max pbuffer width" , vals[++j]);
309 tmplog("Max pbuffer height" , vals[++j]);
310 }
311 if (framebuffer_sRGB_supported)
312 tmplog("Framebuffer sRBG capable" , vals[++j]);
313 if (multi_sample_supported)
314 {
315 tmplog("Samples " , vals[++j]);
316 tmplog("Sample buffers " , vals[++j]);
317 }
318 if (depth_float_supported)
319 tmplog("Depth float" , vals[++j]);
320#undef tmplog
321 }
322 }
323 }
324#endif
325#elif defined(IRR_LINUX_DEVICE)
326#endif
327}
328
329
330void COpenGLExtensionHandler::initExtensions(bool stencilBuffer)
331{
332 const f32 ogl_ver = core::fast_atof(reinterpret_cast<const c8*>(glGetString(GL_VERSION)));
333 Version = static_cast<u16>(core::floor32(ogl_ver)*100+core::round32(core::fract(ogl_ver)*10.0f));
334 if ( Version >= 102)
335 os::Printer::log("OpenGL driver version is 1.2 or better.", ELL_INFORMATION);
336 else
337 os::Printer::log("OpenGL driver version is not 1.2 or better.", ELL_WARNING);
338
339 {
340 const char* t = reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS));
341 size_t len = 0;
342 c8 *str = 0;
343 if (t)
344 {
345 len = strlen(t);
346 str = new c8[len+1];
347 }
348 c8* p = str;
349
350 for (size_t i=0; i<len; ++i)
351 {
352 str[i] = static_cast<char>(t[i]);
353
354 if (str[i] == ' ')
355 {
356 str[i] = 0;
357 for (u32 j=0; j<IRR_OpenGL_Feature_Count; ++j)
358 {
359 if (!strcmp(OpenGLFeatureStrings[j], p))
360 {
361 FeatureAvailable[j] = true;
362 break;
363 }
364 }
365
366 p = p + strlen(p) + 1;
367 }
368 }
369
370 delete [] str;
371 }
372
373 MultiTextureExtension = FeatureAvailable[IRR_ARB_multitexture];
374 TextureCompressionExtension = FeatureAvailable[IRR_ARB_texture_compression];
375 StencilBuffer=stencilBuffer;
376
377#ifdef _IRR_OPENGL_USE_EXTPOINTER_
378#ifdef _IRR_WINDOWS_API_
379 #define IRR_OGL_LOAD_EXTENSION(x) wglGetProcAddress(reinterpret_cast<const char*>(x))
380#elif defined(_IRR_COMPILE_WITH_SDL_DEVICE_) && !defined(_IRR_COMPILE_WITH_X11_DEVICE_)
381 #define IRR_OGL_LOAD_EXTENSION(x) SDL_GL_GetProcAddress(reinterpret_cast<const char*>(x))
382#else
383 // Accessing the correct function is quite complex
384 // All libraries should support the ARB version, however
385 // since GLX 1.4 the non-ARB version is the official one
386 // So we have to check the runtime environment and
387 // choose the proper symbol
388 // In case you still have problems please enable the
389 // next line by uncommenting it
390 // #define _IRR_GETPROCADDRESS_WORKAROUND_
391
392 #ifndef _IRR_GETPROCADDRESS_WORKAROUND_
393 __GLXextFuncPtr (*IRR_OGL_LOAD_EXTENSION_FUNCP)(const GLubyte*)=0;
394 #ifdef GLX_VERSION_1_4
395 int major=0,minor=0;
396 if (glXGetCurrentDisplay())
397 glXQueryVersion(glXGetCurrentDisplay(), &major, &minor);
398 if ((major>1) || (minor>3))
399 IRR_OGL_LOAD_EXTENSION_FUNCP=glXGetProcAddress;
400 else
401 #endif
402 IRR_OGL_LOAD_EXTENSION_FUNCP=glXGetProcAddressARB;
403 #define IRR_OGL_LOAD_EXTENSION(X) IRR_OGL_LOAD_EXTENSION_FUNCP(reinterpret_cast<const GLubyte*>(X))
404 #else
405 #define IRR_OGL_LOAD_EXTENSION(X) glXGetProcAddressARB(reinterpret_cast<const GLubyte*>(X))
406 #endif // workaround
407#endif // Windows, SDL, or Linux
408
409 // get multitexturing function pointers
410 pGlActiveTextureARB = (PFNGLACTIVETEXTUREARBPROC) IRR_OGL_LOAD_EXTENSION("glActiveTextureARB");
411 pGlClientActiveTextureARB = (PFNGLCLIENTACTIVETEXTUREARBPROC) IRR_OGL_LOAD_EXTENSION("glClientActiveTextureARB");
412
413 // get fragment and vertex program function pointers
414 pGlGenProgramsARB = (PFNGLGENPROGRAMSARBPROC) IRR_OGL_LOAD_EXTENSION("glGenProgramsARB");
415 pGlGenProgramsNV = (PFNGLGENPROGRAMSNVPROC) IRR_OGL_LOAD_EXTENSION("glGenProgramsNV");
416 pGlBindProgramARB = (PFNGLBINDPROGRAMARBPROC) IRR_OGL_LOAD_EXTENSION("glBindProgramARB");
417 pGlBindProgramNV = (PFNGLBINDPROGRAMNVPROC) IRR_OGL_LOAD_EXTENSION("glBindProgramNV");
418 pGlProgramStringARB = (PFNGLPROGRAMSTRINGARBPROC) IRR_OGL_LOAD_EXTENSION("glProgramStringARB");
419 pGlLoadProgramNV = (PFNGLLOADPROGRAMNVPROC) IRR_OGL_LOAD_EXTENSION("glLoadProgramNV");
420 pGlDeleteProgramsARB = (PFNGLDELETEPROGRAMSARBPROC) IRR_OGL_LOAD_EXTENSION("glDeleteProgramsARB");
421 pGlDeleteProgramsNV = (PFNGLDELETEPROGRAMSNVPROC) IRR_OGL_LOAD_EXTENSION("glDeleteProgramsNV");
422 pGlProgramLocalParameter4fvARB = (PFNGLPROGRAMLOCALPARAMETER4FVARBPROC) IRR_OGL_LOAD_EXTENSION("glProgramLocalParameter4fvARB");
423 pGlCreateShaderObjectARB = (PFNGLCREATESHADEROBJECTARBPROC) IRR_OGL_LOAD_EXTENSION("glCreateShaderObjectARB");
424 pGlCreateShader = (PFNGLCREATESHADERPROC) IRR_OGL_LOAD_EXTENSION("glCreateShader");
425 pGlShaderSourceARB = (PFNGLSHADERSOURCEARBPROC) IRR_OGL_LOAD_EXTENSION("glShaderSourceARB");
426 pGlShaderSource = (PFNGLSHADERSOURCEPROC) IRR_OGL_LOAD_EXTENSION("glShaderSource");
427 pGlCompileShaderARB = (PFNGLCOMPILESHADERARBPROC) IRR_OGL_LOAD_EXTENSION("glCompileShaderARB");
428 pGlCompileShader = (PFNGLCOMPILESHADERPROC) IRR_OGL_LOAD_EXTENSION("glCompileShader");
429 pGlCreateProgramObjectARB = (PFNGLCREATEPROGRAMOBJECTARBPROC) IRR_OGL_LOAD_EXTENSION("glCreateProgramObjectARB");
430 pGlCreateProgram = (PFNGLCREATEPROGRAMPROC) IRR_OGL_LOAD_EXTENSION("glCreateProgram");
431 pGlAttachObjectARB = (PFNGLATTACHOBJECTARBPROC) IRR_OGL_LOAD_EXTENSION("glAttachObjectARB");
432 pGlAttachShader = (PFNGLATTACHSHADERPROC) IRR_OGL_LOAD_EXTENSION("glAttachShader");
433 pGlLinkProgramARB = (PFNGLLINKPROGRAMARBPROC) IRR_OGL_LOAD_EXTENSION("glLinkProgramARB");
434 pGlLinkProgram = (PFNGLLINKPROGRAMPROC) IRR_OGL_LOAD_EXTENSION("glLinkProgram");
435 pGlUseProgramObjectARB = (PFNGLUSEPROGRAMOBJECTARBPROC) IRR_OGL_LOAD_EXTENSION("glUseProgramObjectARB");
436 pGlUseProgram = (PFNGLUSEPROGRAMPROC) IRR_OGL_LOAD_EXTENSION("glUseProgram");
437 pGlDeleteObjectARB = (PFNGLDELETEOBJECTARBPROC) IRR_OGL_LOAD_EXTENSION("glDeleteObjectARB");
438 pGlDeleteProgram = (PFNGLDELETEPROGRAMPROC) IRR_OGL_LOAD_EXTENSION("glDeleteProgram");
439 pGlDeleteShader = (PFNGLDELETESHADERPROC) IRR_OGL_LOAD_EXTENSION("glDeleteShader");
440 pGlGetAttachedShaders = (PFNGLGETATTACHEDSHADERSPROC) IRR_OGL_LOAD_EXTENSION("glGetAttachedShaders");
441 pGlGetAttachedObjectsARB = (PFNGLGETATTACHEDOBJECTSARBPROC) IRR_OGL_LOAD_EXTENSION("glGetAttachedObjectsARB");
442 pGlGetInfoLogARB = (PFNGLGETINFOLOGARBPROC) IRR_OGL_LOAD_EXTENSION("glGetInfoLogARB");
443 pGlGetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC) IRR_OGL_LOAD_EXTENSION("glGetShaderInfoLog");
444 pGlGetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC) IRR_OGL_LOAD_EXTENSION("glGetProgramInfoLog");
445 pGlGetObjectParameterivARB = (PFNGLGETOBJECTPARAMETERIVARBPROC) IRR_OGL_LOAD_EXTENSION("glGetObjectParameterivARB");
446 pGlGetShaderiv = (PFNGLGETSHADERIVPROC) IRR_OGL_LOAD_EXTENSION("glGetShaderiv");
447 pGlGetProgramiv = (PFNGLGETPROGRAMIVPROC) IRR_OGL_LOAD_EXTENSION("glGetProgramiv");
448 pGlGetUniformLocationARB = (PFNGLGETUNIFORMLOCATIONARBPROC) IRR_OGL_LOAD_EXTENSION("glGetUniformLocationARB");
449 pGlGetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) IRR_OGL_LOAD_EXTENSION("glGetUniformLocation");
450 pGlUniform1fvARB = (PFNGLUNIFORM1FVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniform1fvARB");
451 pGlUniform2fvARB = (PFNGLUNIFORM2FVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniform2fvARB");
452 pGlUniform3fvARB = (PFNGLUNIFORM3FVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniform3fvARB");
453 pGlUniform4fvARB = (PFNGLUNIFORM4FVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniform4fvARB");
454 pGlUniform1ivARB = (PFNGLUNIFORM1IVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniform1ivARB");
455 pGlUniform2ivARB = (PFNGLUNIFORM2IVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniform2ivARB");
456 pGlUniform3ivARB = (PFNGLUNIFORM3IVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniform3ivARB");
457 pGlUniform4ivARB = (PFNGLUNIFORM4IVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniform4ivARB");
458 pGlUniformMatrix2fvARB = (PFNGLUNIFORMMATRIX2FVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniformMatrix2fvARB");
459 pGlUniformMatrix3fvARB = (PFNGLUNIFORMMATRIX3FVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniformMatrix3fvARB");
460 pGlUniformMatrix4fvARB = (PFNGLUNIFORMMATRIX4FVARBPROC) IRR_OGL_LOAD_EXTENSION("glUniformMatrix4fvARB");
461 pGlGetActiveUniformARB = (PFNGLGETACTIVEUNIFORMARBPROC) IRR_OGL_LOAD_EXTENSION("glGetActiveUniformARB");
462 pGlGetActiveUniform = (PFNGLGETACTIVEUNIFORMPROC) IRR_OGL_LOAD_EXTENSION("glGetActiveUniform");
463
464 // get point parameter extension
465 pGlPointParameterfARB = (PFNGLPOINTPARAMETERFARBPROC) IRR_OGL_LOAD_EXTENSION("glPointParameterfARB");
466 pGlPointParameterfvARB = (PFNGLPOINTPARAMETERFVARBPROC) IRR_OGL_LOAD_EXTENSION("glPointParameterfvARB");
467
468 // get stencil extension
469 pGlStencilFuncSeparate = (PFNGLSTENCILFUNCSEPARATEPROC) IRR_OGL_LOAD_EXTENSION("glStencilFuncSeparate");
470 pGlStencilOpSeparate = (PFNGLSTENCILOPSEPARATEPROC) IRR_OGL_LOAD_EXTENSION("glStencilOpSeparate");
471 pGlStencilFuncSeparateATI = (PFNGLSTENCILFUNCSEPARATEATIPROC) IRR_OGL_LOAD_EXTENSION("glStencilFuncSeparateATI");
472 pGlStencilOpSeparateATI = (PFNGLSTENCILOPSEPARATEATIPROC) IRR_OGL_LOAD_EXTENSION("glStencilOpSeparateATI");
473
474 // compressed textures
475 pGlCompressedTexImage2D = (PFNGLCOMPRESSEDTEXIMAGE2DPROC) IRR_OGL_LOAD_EXTENSION("glCompressedTexImage2D");
476
477 // ARB FrameBufferObjects
478 pGlBindFramebuffer = (PFNGLBINDFRAMEBUFFERPROC) IRR_OGL_LOAD_EXTENSION("glBindFramebuffer");
479 pGlDeleteFramebuffers = (PFNGLDELETEFRAMEBUFFERSPROC) IRR_OGL_LOAD_EXTENSION("glDeleteFramebuffers");
480 pGlGenFramebuffers = (PFNGLGENFRAMEBUFFERSPROC) IRR_OGL_LOAD_EXTENSION("glGenFramebuffers");
481 pGlCheckFramebufferStatus = (PFNGLCHECKFRAMEBUFFERSTATUSPROC) IRR_OGL_LOAD_EXTENSION("glCheckFramebufferStatus");
482 pGlFramebufferTexture2D = (PFNGLFRAMEBUFFERTEXTURE2DPROC) IRR_OGL_LOAD_EXTENSION("glFramebufferTexture2D");
483 pGlBindRenderbuffer = (PFNGLBINDRENDERBUFFERPROC) IRR_OGL_LOAD_EXTENSION("glBindRenderbuffer");
484 pGlDeleteRenderbuffers = (PFNGLDELETERENDERBUFFERSPROC) IRR_OGL_LOAD_EXTENSION("glDeleteRenderbuffers");
485 pGlGenRenderbuffers = (PFNGLGENRENDERBUFFERSPROC) IRR_OGL_LOAD_EXTENSION("glGenRenderbuffers");
486 pGlRenderbufferStorage = (PFNGLRENDERBUFFERSTORAGEPROC) IRR_OGL_LOAD_EXTENSION("glRenderbufferStorage");
487 pGlFramebufferRenderbuffer = (PFNGLFRAMEBUFFERRENDERBUFFERPROC) IRR_OGL_LOAD_EXTENSION("glFramebufferRenderbuffer");
488 pGlGenerateMipmap = (PFNGLGENERATEMIPMAPPROC) IRR_OGL_LOAD_EXTENSION("glGenerateMipmap");
489
490 // EXT FrameBufferObjects
491 pGlBindFramebufferEXT = (PFNGLBINDFRAMEBUFFEREXTPROC) IRR_OGL_LOAD_EXTENSION("glBindFramebufferEXT");
492 pGlDeleteFramebuffersEXT = (PFNGLDELETEFRAMEBUFFERSEXTPROC) IRR_OGL_LOAD_EXTENSION("glDeleteFramebuffersEXT");
493 pGlGenFramebuffersEXT = (PFNGLGENFRAMEBUFFERSEXTPROC) IRR_OGL_LOAD_EXTENSION("glGenFramebuffersEXT");
494 pGlCheckFramebufferStatusEXT = (PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC) IRR_OGL_LOAD_EXTENSION("glCheckFramebufferStatusEXT");
495 pGlFramebufferTexture2DEXT = (PFNGLFRAMEBUFFERTEXTURE2DEXTPROC) IRR_OGL_LOAD_EXTENSION("glFramebufferTexture2DEXT");
496 pGlBindRenderbufferEXT = (PFNGLBINDRENDERBUFFEREXTPROC) IRR_OGL_LOAD_EXTENSION("glBindRenderbufferEXT");
497 pGlDeleteRenderbuffersEXT = (PFNGLDELETERENDERBUFFERSEXTPROC) IRR_OGL_LOAD_EXTENSION("glDeleteRenderbuffersEXT");
498 pGlGenRenderbuffersEXT = (PFNGLGENRENDERBUFFERSEXTPROC) IRR_OGL_LOAD_EXTENSION("glGenRenderbuffersEXT");
499 pGlRenderbufferStorageEXT = (PFNGLRENDERBUFFERSTORAGEEXTPROC) IRR_OGL_LOAD_EXTENSION("glRenderbufferStorageEXT");
500 pGlFramebufferRenderbufferEXT = (PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC) IRR_OGL_LOAD_EXTENSION("glFramebufferRenderbufferEXT");
501 pGlGenerateMipmapEXT = (PFNGLGENERATEMIPMAPEXTPROC) IRR_OGL_LOAD_EXTENSION("glGenerateMipmapEXT");
502 pGlDrawBuffersARB = (PFNGLDRAWBUFFERSARBPROC) IRR_OGL_LOAD_EXTENSION("glDrawBuffersARB");
503 pGlDrawBuffersATI = (PFNGLDRAWBUFFERSATIPROC) IRR_OGL_LOAD_EXTENSION("glDrawBuffersATI");
504
505 // get vertex buffer extension
506 pGlGenBuffersARB = (PFNGLGENBUFFERSARBPROC) IRR_OGL_LOAD_EXTENSION("glGenBuffersARB");
507 pGlBindBufferARB = (PFNGLBINDBUFFERARBPROC) IRR_OGL_LOAD_EXTENSION("glBindBufferARB");
508 pGlBufferDataARB = (PFNGLBUFFERDATAARBPROC) IRR_OGL_LOAD_EXTENSION("glBufferDataARB");
509 pGlDeleteBuffersARB = (PFNGLDELETEBUFFERSARBPROC) IRR_OGL_LOAD_EXTENSION("glDeleteBuffersARB");
510 pGlBufferSubDataARB= (PFNGLBUFFERSUBDATAARBPROC) IRR_OGL_LOAD_EXTENSION("glBufferSubDataARB");
511 pGlGetBufferSubDataARB= (PFNGLGETBUFFERSUBDATAARBPROC)IRR_OGL_LOAD_EXTENSION("glGetBufferSubDataARB");
512 pGlMapBufferARB= (PFNGLMAPBUFFERARBPROC) IRR_OGL_LOAD_EXTENSION("glMapBufferARB");
513 pGlUnmapBufferARB= (PFNGLUNMAPBUFFERARBPROC) IRR_OGL_LOAD_EXTENSION("glUnmapBufferARB");
514 pGlIsBufferARB= (PFNGLISBUFFERARBPROC) IRR_OGL_LOAD_EXTENSION("glIsBufferARB");
515 pGlGetBufferParameterivARB= (PFNGLGETBUFFERPARAMETERIVARBPROC) IRR_OGL_LOAD_EXTENSION("glGetBufferParameterivARB");
516 pGlGetBufferPointervARB= (PFNGLGETBUFFERPOINTERVARBPROC) IRR_OGL_LOAD_EXTENSION("glGetBufferPointervARB");
517 pGlProvokingVertexARB= (PFNGLPROVOKINGVERTEXPROC) IRR_OGL_LOAD_EXTENSION("glProvokingVertex");
518 pGlProvokingVertexEXT= (PFNGLPROVOKINGVERTEXEXTPROC) IRR_OGL_LOAD_EXTENSION("glProvokingVertexEXT");
519 pGlColorMaskIndexedEXT= (PFNGLCOLORMASKINDEXEDEXTPROC) IRR_OGL_LOAD_EXTENSION("glColorMaskIndexedEXT");
520 pGlEnableIndexedEXT= (PFNGLENABLEINDEXEDEXTPROC) IRR_OGL_LOAD_EXTENSION("glEnableIndexedEXT");
521 pGlDisableIndexedEXT= (PFNGLDISABLEINDEXEDEXTPROC) IRR_OGL_LOAD_EXTENSION("glDisableIndexedEXT");
522 pGlBlendFuncIndexedAMD= (PFNGLBLENDFUNCINDEXEDAMDPROC) IRR_OGL_LOAD_EXTENSION("glBlendFuncIndexedAMD");
523 pGlBlendFunciARB= (PFNGLBLENDFUNCIPROC) IRR_OGL_LOAD_EXTENSION("glBlendFunciARB");
524 pGlBlendEquationIndexedAMD= (PFNGLBLENDEQUATIONINDEXEDAMDPROC) IRR_OGL_LOAD_EXTENSION("glBlendEquationIndexedAMD");
525 pGlBlendEquationiARB= (PFNGLBLENDEQUATIONIPROC) IRR_OGL_LOAD_EXTENSION("glBlendEquationiARB");
526 pGlProgramParameteriARB= (PFNGLPROGRAMPARAMETERIARBPROC) IRR_OGL_LOAD_EXTENSION("glProgramParameteriARB");
527 pGlProgramParameteriEXT= (PFNGLPROGRAMPARAMETERIEXTPROC) IRR_OGL_LOAD_EXTENSION("glProgramParameteriEXT");
528
529 // occlusion query
530 pGlGenQueriesARB = (PFNGLGENQUERIESARBPROC) IRR_OGL_LOAD_EXTENSION("glGenQueriesARB");
531 pGlDeleteQueriesARB = (PFNGLDELETEQUERIESARBPROC) IRR_OGL_LOAD_EXTENSION("glDeleteQueriesARB");
532 pGlIsQueryARB = (PFNGLISQUERYARBPROC) IRR_OGL_LOAD_EXTENSION("glIsQueryARB");
533 pGlBeginQueryARB = (PFNGLBEGINQUERYARBPROC) IRR_OGL_LOAD_EXTENSION("glBeginQueryARB");
534 pGlEndQueryARB = (PFNGLENDQUERYARBPROC) IRR_OGL_LOAD_EXTENSION("glEndQueryARB");
535 pGlGetQueryivARB = (PFNGLGETQUERYIVARBPROC) IRR_OGL_LOAD_EXTENSION("glGetQueryivARB");
536 pGlGetQueryObjectivARB = (PFNGLGETQUERYOBJECTIVARBPROC) IRR_OGL_LOAD_EXTENSION("glGetQueryObjectivARB");
537 pGlGetQueryObjectuivARB = (PFNGLGETQUERYOBJECTUIVARBPROC) IRR_OGL_LOAD_EXTENSION("glGetQueryObjectuivARB");
538 pGlGenOcclusionQueriesNV = (PFNGLGENOCCLUSIONQUERIESNVPROC) IRR_OGL_LOAD_EXTENSION("glGenOcclusionQueriesNV");
539 pGlDeleteOcclusionQueriesNV = (PFNGLDELETEOCCLUSIONQUERIESNVPROC) IRR_OGL_LOAD_EXTENSION("glDeleteOcclusionQueriesNV");
540 pGlIsOcclusionQueryNV = (PFNGLISOCCLUSIONQUERYNVPROC) IRR_OGL_LOAD_EXTENSION("glIsOcclusionQueryNV");
541 pGlBeginOcclusionQueryNV = (PFNGLBEGINOCCLUSIONQUERYNVPROC) IRR_OGL_LOAD_EXTENSION("glBeginOcclusionQueryNV");
542 pGlEndOcclusionQueryNV = (PFNGLENDOCCLUSIONQUERYNVPROC) IRR_OGL_LOAD_EXTENSION("glEndOcclusionQueryNV");
543 pGlGetOcclusionQueryivNV = (PFNGLGETOCCLUSIONQUERYIVNVPROC) IRR_OGL_LOAD_EXTENSION("glGetOcclusionQueryivNV");
544 pGlGetOcclusionQueryuivNV = (PFNGLGETOCCLUSIONQUERYUIVNVPROC) IRR_OGL_LOAD_EXTENSION("glGetOcclusionQueryuivNV");
545
546 // blend equation
547 pGlBlendEquationEXT = (PFNGLBLENDEQUATIONEXTPROC) IRR_OGL_LOAD_EXTENSION("glBlendEquationEXT");
548 pGlBlendEquation = (PFNGLBLENDEQUATIONPROC) IRR_OGL_LOAD_EXTENSION("glBlendEquation");
549
550 // get vsync extension
551 #if defined(WGL_EXT_swap_control) && !defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
552 pWglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC) IRR_OGL_LOAD_EXTENSION("wglSwapIntervalEXT");
553 #endif
554 #if defined(GLX_SGI_swap_control) && !defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
555 pGlxSwapIntervalSGI = (PFNGLXSWAPINTERVALSGIPROC)IRR_OGL_LOAD_EXTENSION("glXSwapIntervalSGI");
556 #endif
557 #if defined(GLX_EXT_swap_control) && !defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
558 pGlxSwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC)IRR_OGL_LOAD_EXTENSION("glXSwapIntervalEXT");
559 #endif
560 #if defined(GLX_MESA_swap_control) && !defined(_IRR_COMPILE_WITH_SDL_DEVICE_)
561 pGlxSwapIntervalMESA = (PFNGLXSWAPINTERVALMESAPROC)IRR_OGL_LOAD_EXTENSION("glXSwapIntervalMESA");
562 #endif
563#endif // use extension pointer
564
565 GLint num=0;
566 // set some properties
567#if defined(GL_ARB_multitexture) || defined(GL_VERSION_1_3)
568 if (Version>102 || FeatureAvailable[IRR_ARB_multitexture])
569 {
570#if defined(GL_MAX_TEXTURE_UNITS)
571 glGetIntegerv(GL_MAX_TEXTURE_UNITS, &num);
572#elif defined(GL_MAX_TEXTURE_UNITS_ARB)
573 glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &num);
574#endif
575 MaxSupportedTextures=static_cast<u8>(num);
576 }
577#endif
578#if defined(GL_ARB_vertex_shader) || defined(GL_VERSION_2_0)
579 if (Version>=200 || FeatureAvailable[IRR_ARB_vertex_shader])
580 {
581 num=0;
582#if defined(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS)
583 glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &num);
584#elif defined(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB)
585 glGetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB, &num);
586#endif
587 MaxSupportedTextures=core::max_(MaxSupportedTextures,static_cast<u8>(num));
588 }
589#endif
590 glGetIntegerv(GL_MAX_LIGHTS, &num);
591 MaxLights=static_cast<u8>(num);
592#ifdef GL_EXT_texture_filter_anisotropic
593 if (FeatureAvailable[IRR_EXT_texture_filter_anisotropic])
594 {
595 glGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &num);
596 MaxAnisotropy=static_cast<u8>(num);
597 }
598#endif
599#ifdef GL_VERSION_1_2
600 if (Version>101)
601 {
602 glGetIntegerv(GL_MAX_ELEMENTS_INDICES, &num);
603 MaxIndices=num;
604 }
605#endif
606 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &num);
607 MaxTextureSize=static_cast<u32>(num);
608 if (queryFeature(EVDF_GEOMETRY_SHADER))
609 {
610#if defined(GL_ARB_geometry_shader4) || defined(GL_EXT_geometry_shader4) || defined(GL_NV_geometry_shader4)
611 glGetIntegerv(GL_MAX_GEOMETRY_OUTPUT_VERTICES_EXT, &num);
612 MaxGeometryVerticesOut=static_cast<u32>(num);
613#elif defined(GL_NV_geometry_program4)
614 extGlGetProgramiv(GEOMETRY_PROGRAM_NV, GL_MAX_PROGRAM_OUTPUT_VERTICES_NV, &num);
615 MaxGeometryVerticesOut=static_cast<u32>(num);
616#endif
617 }
618#ifdef GL_EXT_texture_lod_bias
619 if (FeatureAvailable[IRR_EXT_texture_lod_bias])
620 glGetFloatv(GL_MAX_TEXTURE_LOD_BIAS_EXT, &MaxTextureLODBias);
621#endif
622 glGetIntegerv(GL_MAX_CLIP_PLANES, &num);
623 MaxUserClipPlanes=static_cast<u8>(num);
624 glGetIntegerv(GL_AUX_BUFFERS, &num);
625 MaxAuxBuffers=static_cast<u8>(num);
626#ifdef GL_ARB_draw_buffers
627 if (FeatureAvailable[IRR_ARB_draw_buffers])
628 {
629 glGetIntegerv(GL_MAX_DRAW_BUFFERS_ARB, &num);
630 MaxMultipleRenderTargets = static_cast<u8>(num);
631 }
632#endif
633#if defined(GL_ATI_draw_buffers)
634#ifdef GL_ARB_draw_buffers
635 else
636#endif
637 if (FeatureAvailable[IRR_ATI_draw_buffers])
638 {
639 glGetIntegerv(GL_MAX_DRAW_BUFFERS_ATI, &num);
640 MaxMultipleRenderTargets = static_cast<u8>(num);
641 }
642#endif
643 glGetFloatv(GL_ALIASED_LINE_WIDTH_RANGE, DimAliasedLine);
644 glGetFloatv(GL_ALIASED_POINT_SIZE_RANGE, DimAliasedPoint);
645 glGetFloatv(GL_SMOOTH_LINE_WIDTH_RANGE, DimSmoothedLine);
646 glGetFloatv(GL_SMOOTH_POINT_SIZE_RANGE, DimSmoothedPoint);
647#if defined(GL_ARB_shading_language_100) || defined (GL_VERSION_2_0)
648 if (FeatureAvailable[IRR_ARB_shading_language_100] || Version>=200)
649 {
650 glGetError(); // clean error buffer
651#ifdef GL_SHADING_LANGUAGE_VERSION
652 const GLubyte* shaderVersion = glGetString(GL_SHADING_LANGUAGE_VERSION);
653#else
654 const GLubyte* shaderVersion = glGetString(GL_SHADING_LANGUAGE_VERSION_ARB);
655#endif
656 if (glGetError() == GL_INVALID_ENUM)
657 ShaderLanguageVersion = 100;
658 else
659 {
660 const f32 sl_ver = core::fast_atof(reinterpret_cast<const c8*>(shaderVersion));
661 ShaderLanguageVersion = static_cast<u16>(core::floor32(sl_ver)*100+core::round32(core::fract(sl_ver)*10.0f));
662 }
663 }
664#endif
665
666#ifdef _IRR_OPENGL_USE_EXTPOINTER_
667 if (!pGlActiveTextureARB || !pGlClientActiveTextureARB)
668 {
669 MultiTextureExtension = false;
670 os::Printer::log("Failed to load OpenGL's multitexture extension, proceeding without.", ELL_WARNING);
671 }
672 else
673#endif
674 MaxTextureUnits = core::min_(MaxSupportedTextures, static_cast<u8>(MATERIAL_MAX_TEXTURES));
675 if (MaxTextureUnits < 2)
676 {
677 MultiTextureExtension = false;
678 os::Printer::log("Warning: OpenGL device only has one texture unit. Disabling multitexturing.", ELL_WARNING);
679 }
680
681#ifdef GL_ARB_occlusion_query
682 if (FeatureAvailable[IRR_ARB_occlusion_query])
683 {
684 extGlGetQueryiv(GL_SAMPLES_PASSED_ARB,GL_QUERY_COUNTER_BITS_ARB,
685 &num);
686 OcclusionQuerySupport=(num>0);
687 }
688 else
689#endif
690#ifdef GL_NV_occlusion_query
691 if (FeatureAvailable[IRR_NV_occlusion_query])
692 {
693 glGetIntegerv(GL_PIXEL_COUNTER_BITS_NV, &num);
694 OcclusionQuerySupport=(num>0);
695 }
696 else
697#endif
698 OcclusionQuerySupport=false;
699
700#ifdef _DEBUG
701 if (FeatureAvailable[IRR_NVX_gpu_memory_info])
702 {
703 // undocumented flags, so use the RAW values
704 GLint val;
705 glGetIntegerv(0x9047, &val);
706 os::Printer::log("Dedicated video memory (kB)", core::stringc(val));
707 glGetIntegerv(0x9048, &val);
708 os::Printer::log("Total video memory (kB)", core::stringc(val));
709 glGetIntegerv(0x9049, &val);
710 os::Printer::log("Available video memory (kB)", core::stringc(val));
711 }
712#ifdef GL_ATI_meminfo
713 if (FeatureAvailable[IRR_ATI_meminfo])
714 {
715 GLint val[4];
716 glGetIntegerv(GL_TEXTURE_FREE_MEMORY_ATI, val);
717 os::Printer::log("Free texture memory (kB)", core::stringc(val[0]));
718 glGetIntegerv(GL_VBO_FREE_MEMORY_ATI, val);
719 os::Printer::log("Free VBO memory (kB)", core::stringc(val[0]));
720 glGetIntegerv(GL_RENDERBUFFER_FREE_MEMORY_ATI, val);
721 os::Printer::log("Free render buffer memory (kB)", core::stringc(val[0]));
722 }
723#endif
724#endif
725}
726
727bool COpenGLExtensionHandler::queryFeature(E_VIDEO_DRIVER_FEATURE feature) const
728{
729 switch (feature)
730 {
731 case EVDF_RENDER_TO_TARGET:
732 return true;
733 case EVDF_HARDWARE_TL:
734 return true; // we cannot tell other things
735 case EVDF_MULTITEXTURE:
736 return MultiTextureExtension;
737 case EVDF_BILINEAR_FILTER:
738 return true;
739 case EVDF_MIP_MAP:
740 return true;
741 case EVDF_MIP_MAP_AUTO_UPDATE:
742 return FeatureAvailable[IRR_SGIS_generate_mipmap] || FeatureAvailable[IRR_EXT_framebuffer_object] || FeatureAvailable[IRR_ARB_framebuffer_object];
743 case EVDF_STENCIL_BUFFER:
744 return StencilBuffer;
745 case EVDF_VERTEX_SHADER_1_1:
746 case EVDF_ARB_VERTEX_PROGRAM_1:
747 return FeatureAvailable[IRR_ARB_vertex_program] || FeatureAvailable[IRR_NV_vertex_program1_1];
748 case EVDF_PIXEL_SHADER_1_1:
749 case EVDF_PIXEL_SHADER_1_2:
750 case EVDF_ARB_FRAGMENT_PROGRAM_1:
751 return FeatureAvailable[IRR_ARB_fragment_program] || FeatureAvailable[IRR_NV_fragment_program];
752 case EVDF_PIXEL_SHADER_2_0:
753 case EVDF_VERTEX_SHADER_2_0:
754 case EVDF_ARB_GLSL:
755 return (FeatureAvailable[IRR_ARB_shading_language_100]||Version>=200);
756 case EVDF_TEXTURE_NSQUARE:
757 return true; // non-square is always supported
758 case EVDF_TEXTURE_NPOT:
759 // Some ATI cards seem to have only SW support in OpenGL 2.0
760 // drivers if the extension is not exposed, so we skip this
761 // extra test for now!
762 // return (FeatureAvailable[IRR_ARB_texture_non_power_of_two]||Version>=200);
763 return (FeatureAvailable[IRR_ARB_texture_non_power_of_two]);
764 case EVDF_FRAMEBUFFER_OBJECT:
765 return FeatureAvailable[IRR_EXT_framebuffer_object] || FeatureAvailable[IRR_ARB_framebuffer_object];
766 case EVDF_VERTEX_BUFFER_OBJECT:
767 return FeatureAvailable[IRR_ARB_vertex_buffer_object];
768 case EVDF_COLOR_MASK:
769 return true;
770 case EVDF_ALPHA_TO_COVERAGE:
771 return FeatureAvailable[IRR_ARB_multisample];
772 case EVDF_GEOMETRY_SHADER:
773 return FeatureAvailable[IRR_ARB_geometry_shader4] || FeatureAvailable[IRR_EXT_geometry_shader4] || FeatureAvailable[IRR_NV_geometry_program4] || FeatureAvailable[IRR_NV_geometry_shader4];
774 case EVDF_MULTIPLE_RENDER_TARGETS:
775 return FeatureAvailable[IRR_ARB_draw_buffers] || FeatureAvailable[IRR_ATI_draw_buffers];
776 case EVDF_MRT_BLEND:
777 case EVDF_MRT_COLOR_MASK:
778 return FeatureAvailable[IRR_EXT_draw_buffers2];
779 case EVDF_MRT_BLEND_FUNC:
780 return FeatureAvailable[IRR_ARB_draw_buffers_blend] || FeatureAvailable[IRR_AMD_draw_buffers_blend];
781 case EVDF_OCCLUSION_QUERY:
782 return FeatureAvailable[IRR_ARB_occlusion_query] && OcclusionQuerySupport;
783 case EVDF_POLYGON_OFFSET:
784 // both features supported with OpenGL 1.1
785 return Version>=110;
786 case EVDF_BLEND_OPERATIONS:
787 return (Version>=120) || FeatureAvailable[IRR_EXT_blend_minmax] ||
788 FeatureAvailable[IRR_EXT_blend_subtract] || FeatureAvailable[IRR_EXT_blend_logic_op];
789 case EVDF_TEXTURE_MATRIX:
790#ifdef _IRR_COMPILE_WITH_CG_
791 // available iff. define is present
792 case EVDF_CG:
793#endif
794 return true;
795 default:
796 return false;
797 };
798}
799
800
801}
802}
803
804#endif
generated by cgit v1.1 at 2024-11-20 11:05:53 +0000