mirror of
https://github.com/nzp-team/fteqw.git
synced 2024-11-14 00:10:46 +00:00
ec3169941f
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@607 fc73d0e0-1445-4013-8a0c-d673dee63da5
428 lines
17 KiB
C
428 lines
17 KiB
C
#include "quakedef.h"
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#include "glquake.h"
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//standard 1.1 opengl calls
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void (APIENTRY *qglAlphaFunc) (GLenum func, GLclampf ref);
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void (APIENTRY *qglBegin) (GLenum mode);
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void (APIENTRY *qglBlendFunc) (GLenum sfactor, GLenum dfactor);
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void (APIENTRY *qglClear) (GLbitfield mask);
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void (APIENTRY *qglClearColor) (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
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void (APIENTRY *qglClearDepth) (GLclampd depth);
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void (APIENTRY *qglClearStencil) (GLint s);
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void (APIENTRY *qglColor3f) (GLfloat red, GLfloat green, GLfloat blue);
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void (APIENTRY *qglColor3ub) (GLubyte red, GLubyte green, GLubyte blue);
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void (APIENTRY *qglColor4f) (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
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void (APIENTRY *qglColor4fv) (const GLfloat *v);
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void (APIENTRY *qglColor4ub) (GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha);
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void (APIENTRY *qglColor4ubv) (const GLubyte *v);
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void (APIENTRY *qglColorMask) (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
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void (APIENTRY *qglCullFace) (GLenum mode);
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void (APIENTRY *qglDepthFunc) (GLenum func);
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void (APIENTRY *qglDepthMask) (GLboolean flag);
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void (APIENTRY *qglDepthRange) (GLclampd zNear, GLclampd zFar);
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void (APIENTRY *qglDisable) (GLenum cap);
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void (APIENTRY *qglDrawBuffer) (GLenum mode);
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void (APIENTRY *qglDrawPixels) (GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
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void (APIENTRY *qglEnable) (GLenum cap);
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void (APIENTRY *qglEnd) (void);
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void (APIENTRY *qglFinish) (void);
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void (APIENTRY *qglFlush) (void);
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void (APIENTRY *qglFrustum) (GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble zNear, GLdouble zFar);
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GLenum (APIENTRY *qglGetError) (void);
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void (APIENTRY *qglGetFloatv) (GLenum pname, GLfloat *params);
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void (APIENTRY *qglGetIntegerv) (GLenum pname, GLint *params);
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const GLubyte * (APIENTRY *qglGetString) (GLenum name);
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void (APIENTRY *qglHint) (GLenum target, GLenum mode);
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void (APIENTRY *qglLoadIdentity) (void);
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void (APIENTRY *qglLoadMatrixf) (const GLfloat *m);
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void (APIENTRY *qglNormal3f) (GLfloat nx, GLfloat ny, GLfloat nz);
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void (APIENTRY *qglNormal3fv) (const GLfloat *v);
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void (APIENTRY *qglMatrixMode) (GLenum mode);
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void (APIENTRY *qglMultMatrixf) (const GLfloat *m);
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void (APIENTRY *qglOrtho) (GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble zNear, GLdouble zFar);
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void (APIENTRY *qglPolygonMode) (GLenum face, GLenum mode);
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void (APIENTRY *qglPopMatrix) (void);
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void (APIENTRY *qglPushMatrix) (void);
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void (APIENTRY *qglReadBuffer) (GLenum mode);
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void (APIENTRY *qglReadPixels) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
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void (APIENTRY *qglRotatef) (GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
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void (APIENTRY *qglScalef) (GLfloat x, GLfloat y, GLfloat z);
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void (APIENTRY *qglShadeModel) (GLenum mode);
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void (APIENTRY *qglTexCoord1f) (GLfloat s);
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void (APIENTRY *qglTexCoord2f) (GLfloat s, GLfloat t);
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void (APIENTRY *qglTexCoord2fv) (const GLfloat *v);
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void (APIENTRY *qglTexEnvf) (GLenum target, GLenum pname, GLfloat param);
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void (APIENTRY *qglTexEnvfv) (GLenum target, GLenum pname, const GLfloat *param);
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void (APIENTRY *qglTexEnvi) (GLenum target, GLenum pname, GLint param);
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void (APIENTRY *qglTexGeni) (GLenum coord, GLenum pname, GLint param);
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void (APIENTRY *qglTexImage2D) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
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void (APIENTRY *qglTexParameteri) (GLenum target, GLenum pname, GLint param);
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void (APIENTRY *qglTexParameterf) (GLenum target, GLenum pname, GLfloat param);
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void (APIENTRY *qglTexSubImage2D) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
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void (APIENTRY *qglTranslatef) (GLfloat x, GLfloat y, GLfloat z);
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void (APIENTRY *qglVertex2f) (GLfloat x, GLfloat y);
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void (APIENTRY *qglVertex3f) (GLfloat x, GLfloat y, GLfloat z);
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void (APIENTRY *qglVertex3fv) (const GLfloat *v);
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void (APIENTRY *qglViewport) (GLint x, GLint y, GLsizei width, GLsizei height);
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void (APIENTRY *qglGetTexLevelParameteriv) (GLenum target, GLint level, GLenum pname, GLint *params);
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void (APIENTRY *qglDrawElements) (GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
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void (APIENTRY *qglArrayElement) (GLint i);
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void (APIENTRY *qglVertexPointer) (GLint size, GLenum type, GLsizei stride, const GLvoid *pointer);
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void (APIENTRY *qglNormalPointer) (GLenum type, GLsizei stride, const GLvoid *pointer);
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void (APIENTRY *qglTexCoordPointer) (GLint size, GLenum type, GLsizei stride, const GLvoid *pointer);
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void (APIENTRY *qglColorPointer) (GLint size, GLenum type, GLsizei stride, const GLvoid *pointer);
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void (APIENTRY *qglDrawArrays) (GLenum mode, GLint first, GLsizei count);
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void (APIENTRY *qglDisableClientState) (GLenum array);
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void (APIENTRY *qglEnableClientState) (GLenum array);
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void (APIENTRY *qglScissor) (GLint x, GLint y, GLsizei width, GLsizei height);
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void (APIENTRY *qglStencilOp) (GLenum fail, GLenum zfail, GLenum zpass);
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void (APIENTRY *qglStencilFunc) (GLenum func, GLint ref, GLuint mask);
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void (APIENTRY *qglPushAttrib) (GLbitfield mask);
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void (APIENTRY *qglPopAttrib) (void);
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PFNGLPROGRAMSTRINGARBPROC qglProgramStringARB;
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PFNGLGETPROGRAMIVARBPROC qglGetProgramivARB;
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PFNGLBINDPROGRAMARBPROC qglBindProgramARB;
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PFNGLGENPROGRAMSARBPROC qglGenProgramsARB;
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PFNGLLOCKARRAYSEXTPROC qglLockArraysEXT;
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PFNGLUNLOCKARRAYSEXTPROC qglUnlockArraysEXT;
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//extensions
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//arb multitexture
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qlpSelTexFUNC qglActiveTextureARB;
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qlpSelTexFUNC qglClientActiveTextureARB;
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qlpMTex3FUNC qglMultiTexCoord3fARB;
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qlpMTex2FUNC qglMultiTexCoord2fARB;
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//generic multitexture
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lpMTexFUNC qglMTexCoord2fSGIS;
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lpSelTexFUNC qglSelectTextureSGIS;
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int mtexid0;
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int mtexid1;
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//ati_truform
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PFNGLPNTRIANGLESIATIPROC qglPNTrianglesiATI;
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PFNGLPNTRIANGLESFATIPROC qglPNTrianglesfATI;
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//stencil shadowing
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void (APIENTRY *qglStencilOpSeparateATI) (GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
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PFNGLACTIVESTENCILFACEEXTPROC qglActiveStencilFaceEXT;
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//quick hack that made quake work on both 1 and 1.1 gl implementations.
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BINDTEXFUNCPTR bindTexFunc;
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int gl_mtexarbable=0; //max texture units
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qboolean gl_mtexable = false;
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int gl_bumpmappingpossible;
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qboolean gammaworks; //if the gl drivers can set proper gamma.
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gl_config_t gl_config;
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int gl_canstencil;
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float gldepthmin, gldepthmax;
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const char *gl_vendor;
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const char *gl_renderer;
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const char *gl_version;
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const char *gl_extensions;
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//int texture_mode = GL_NEAREST;
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//int texture_mode = GL_NEAREST_MIPMAP_NEAREST;
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//int texture_mode = GL_NEAREST_MIPMAP_LINEAR;
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int texture_mode = GL_LINEAR;
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//int texture_mode = GL_LINEAR_MIPMAP_NEAREST;
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//int texture_mode = GL_LINEAR_MIPMAP_LINEAR;
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int texture_extension_number = 1;
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#define getglcore getglfunction
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#define getglext(name) getglfunction(name)
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void GL_CheckExtensions (void *(*getglfunction) (char *name))
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{
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extern cvar_t gl_bump;
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memset(&gl_config, 0, sizeof(gl_config));
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//multitexture
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gl_mtexable = false;
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gl_mtexarbable = 0;
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qglActiveTextureARB = NULL;
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qglMultiTexCoord2fARB = NULL;
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qglMultiTexCoord3fARB = NULL;
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qglMTexCoord2fSGIS = NULL;
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qglSelectTextureSGIS = NULL;
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mtexid0 = 0;
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mtexid1 = 0;
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//none of them bumpmapping possabilities.
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gl_bumpmappingpossible = false;
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//no GL_ATI_separate_stencil
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qglStencilOpSeparateATI = NULL;
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//no GL_EXT_stencil_two_side
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qglActiveStencilFaceEXT = NULL;
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//no truform. sorry.
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qglPNTrianglesfATI = NULL;
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qglPNTrianglesiATI = NULL;
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//fragment programs
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qglProgramStringARB = NULL;
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qglGetProgramivARB = NULL;
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qglBindProgramARB = NULL;
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qglGenProgramsARB = NULL;
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gl_config.arb_texture_non_power_of_two = false;
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gl_config.sgis_generate_mipmap = false;
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gl_config.tex_env_combine = false;
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gl_config.env_add = false;
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gl_config.nv_tex_env_combine4 = false;
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gl_config.arb_texture_env_combine = false;
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gl_config.arb_texture_env_dot3 = false;
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gl_config.arb_texture_cube_map = false;
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if (strstr(gl_extensions, "GL_ARB_texture_non_power_of_two"))
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gl_config.arb_texture_non_power_of_two = true;
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if (strstr(gl_extensions, "GL_SGIS_generate_mipmap"))
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gl_config.sgis_generate_mipmap = true;
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if (strstr(gl_extensions, "GL_ARB_multitexture") && !COM_CheckParm("-noamtex"))
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{ //ARB multitexture is the popular choice.
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Con_SafePrintf("ARB Multitexture extensions found. Use -noamtex to disable.\n");
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qglActiveTextureARB = (void *) getglext("glActiveTextureARB");
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qglClientActiveTextureARB = (void *) getglext("glClientActiveTextureARB");
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qglMultiTexCoord2fARB = (void *) getglext("glMultiTexCoord2fARB");
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qglMultiTexCoord3fARB = (void *) getglext("glMultiTexCoord3fARB");
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glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &gl_mtexarbable);
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gl_mtexable = true;
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qglMTexCoord2fSGIS = qglMultiTexCoord2fARB;
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qglSelectTextureSGIS = qglActiveTextureARB;
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mtexid0 = GL_TEXTURE0_ARB;
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mtexid1 = GL_TEXTURE1_ARB;
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if (!qglActiveTextureARB || !qglClientActiveTextureARB || !qglMultiTexCoord2fARB || !qglMultiTexCoord3fARB)
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{
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qglActiveTextureARB = NULL;
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qglMultiTexCoord2fARB = NULL;
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qglMultiTexCoord3fARB = NULL;
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qglMTexCoord2fSGIS = NULL;
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qglSelectTextureSGIS = NULL;
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gl_mtexable=false;
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gl_mtexarbable = false;
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}
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}
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else if (strstr(gl_extensions, "GL_SGIS_multitexture") && !COM_CheckParm("-nomtex"))
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{ //SGIS multitexture, limited in many ways but basic functionality is identical to ARB
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Con_SafePrintf("Multitexture extensions found.\n");
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qglMTexCoord2fSGIS = (void *) getglext("glMTexCoord2fSGIS");
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qglSelectTextureSGIS = (void *) getglext("glSelectTextureSGIS");
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gl_mtexable = true;
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mtexid0 = GL_TEXTURE0_SGIS;
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mtexid1 = GL_TEXTURE1_SGIS;
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}
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if (strstr(gl_extensions, "GL_EXT_stencil_wrap"))
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gl_config.ext_stencil_wrap = true;
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if (strstr(gl_extensions, "GL_ATI_separate_stencil"))
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qglStencilOpSeparateATI = (void *) getglext("glStencilOpSeparateATI");
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if (strstr(gl_extensions, "GL_EXT_stencil_two_side"))
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qglActiveStencilFaceEXT = (void *) getglext("glActiveStencilFaceEXT");
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if (strstr(gl_extensions, "GL_ARB_texture_compression"))
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{
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qglCompressedTexImage2DARB = (void *)getglext("glCompressedTexImage2DARB");
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qglGetCompressedTexImageARB = (void *)getglext("glGetCompressedTexImageARB");
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if (!qglCompressedTexImage2DARB || !qglGetCompressedTexImageARB)
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{
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qglCompressedTexImage2DARB = NULL;
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qglGetCompressedTexImageARB = NULL;
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}
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else
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gl_config.arb_texture_compression = true;
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}
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if (strstr(gl_extensions, "GL_ATI_pn_triangles"))
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{
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qglPNTrianglesfATI = (void *)getglext("glPNTrianglesfATI");
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qglPNTrianglesiATI = (void *)getglext("glPNTrianglesiATI");
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}
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if (strstr(gl_extensions, "GL_EXT_texture_object"))
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{
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bindTexFunc = (void *)getglext("glBindTextureEXT");
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if (!bindTexFunc) //grrr
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bindTexFunc = (void *)getglext("glBindTexture");
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}
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if (strstr(gl_extensions, "GL_EXT_compiled_vertex_array"))
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{
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qglLockArraysEXT = (void *)getglext("glLockArraysEXT");
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qglUnlockArraysEXT = (void *)getglext("glUnlockArraysEXT");
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}
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gl_config.tex_env_combine = !!strstr(gl_extensions, "GL_EXT_texture_env_combine");
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gl_config.env_add = !!strstr(gl_extensions, "GL_EXT_texture_env_add");
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gl_config.nv_tex_env_combine4 = !!strstr(gl_extensions, "GL_NV_texture_env_combine4");
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gl_config.arb_texture_env_combine = !!strstr(gl_extensions, "GL_ARB_texture_env_combine");
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gl_config.arb_texture_env_dot3 = !!strstr(gl_extensions, "GL_ARB_texture_env_dot3");
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gl_config.arb_texture_cube_map = !!strstr(gl_extensions, "GL_ARB_texture_cube_map");
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if (gl_mtexarbable && gl_config.arb_texture_cube_map && gl_config.arb_texture_env_combine && gl_config.arb_texture_env_dot3 && !COM_CheckParm("-nobump") && gl_bump.value)
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gl_bumpmappingpossible = true;
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if (!!strstr(gl_extensions, "GL_ARB_fragment_program"))
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{
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gl_config.arb_fragment_program = true;
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qglProgramStringARB = (void *)getglext("glProgramStringARB");
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qglGetProgramivARB = (void *)getglext("glGetProgramivARB");
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qglBindProgramARB = (void *)getglext("glBindProgramARB");
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qglGenProgramsARB = (void *)getglext("glGenProgramsARB");
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}
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}
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//the vid routines have initialised a window, and now they are giving us a reference to some of of GetProcAddress to get pointers to the funcs.
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void GL_Init(void *(*getglfunction) (char *name))
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{
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qglAlphaFunc = (void *)getglcore("glAlphaFunc");
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qglBegin = (void *)getglcore("glBegin");
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qglBlendFunc = (void *)getglcore("glBlendFunc");
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bindTexFunc = (void *)getglcore("glBindTexture"); //for compleateness
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qglClear = (void *)getglcore("glClear");
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qglClearColor = (void *)getglcore("glClearColor");
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qglClearDepth = (void *)getglcore("glClearDepth");
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qglClearStencil = (void *)getglcore("glClearStencil");
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qglColor3f = (void *)getglcore("glColor3f");
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qglColor3ub = (void *)getglcore("glColor3ub");
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qglColor4f = (void *)getglcore("glColor4f");
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qglColor4fv = (void *)getglcore("glColor4fv");
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qglColor4ub = (void *)getglcore("glColor4ub");
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qglColor4ubv = (void *)getglcore("glColor4ubv");
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qglColorMask = (void *)getglcore("glColorMask");
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qglCullFace = (void *)getglcore("glCullFace");
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qglDepthFunc = (void *)getglcore("glDepthFunc");
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qglDepthMask = (void *)getglcore("glDepthMask");
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qglDepthRange = (void *)getglcore("glDepthRange");
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qglDisable = (void *)getglcore("glDisable");
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qglDrawBuffer = (void *)getglcore("glDrawBuffer");
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qglDrawPixels = (void *)getglcore("glDrawPixels");
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qglEnable = (void *)getglcore("glEnable");
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qglEnd = (void *)getglcore("glEnd");
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qglFinish = (void *)getglcore("glFinish");
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qglFlush = (void *)getglcore("glFlush");
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qglFrustum = (void *)getglcore("glFrustum");
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qglGetFloatv = (void *)getglcore("glGetFloatv");
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qglGetIntegerv = (void *)getglcore("glGetIntegerv");
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qglGetString = (void *)getglcore("glGetString");
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qglGetTexLevelParameteriv = (void *)getglcore("glGetTexLevelParameteriv");
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qglHint = (void *)getglcore("glHint");
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qglLoadIdentity = (void *)getglcore("glLoadIdentity");
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qglLoadMatrixf = (void *)getglcore("glLoadMatrixf");
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qglNormal3f = (void *)getglcore("glNormal3f");
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qglNormal3fv = (void *)getglcore("glNormal3fv");
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qglMatrixMode = (void *)getglcore("glMatrixMode");
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qglMultMatrixf = (void *)getglcore("glMultMatrixf");
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qglOrtho = (void *)getglcore("glOrtho");
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qglPolygonMode = (void *)getglcore("glPolygonMode");
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qglPopMatrix = (void *)getglcore("glPopMatrix");
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qglPushMatrix = (void *)getglcore("glPushMatrix");
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qglReadBuffer = (void *)getglcore("glReadBuffer");
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qglReadPixels = (void *)getglcore("glReadPixels");
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qglRotatef = (void *)getglcore("glRotatef");
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qglScalef = (void *)getglcore("glScalef");
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qglShadeModel = (void *)getglcore("glShadeModel");
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qglTexCoord1f = (void *)getglcore("glTexCoord1f");
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qglTexCoord2f = (void *)getglcore("glTexCoord2f");
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qglTexCoord2fv = (void *)getglcore("glTexCoord2fv");
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qglTexEnvf = (void *)getglcore("glTexEnvf");
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qglTexEnvfv = (void *)getglcore("glTexEnvfv");
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qglTexEnvi = (void *)getglcore("glTexEnvi");
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qglTexGeni = (void *)getglcore("glTexGeni");
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qglTexImage2D = (void *)getglcore("glTexImage2D");
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qglTexParameteri = (void *)getglcore("glTexParameteri");
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qglTexParameterf = (void *)getglcore("glTexParameterf");
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qglTexSubImage2D = (void *)getglcore("glTexSubImage2D");
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qglTranslatef = (void *)getglcore("glTranslatef");
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qglVertex2f = (void *)getglcore("glVertex2f");
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qglVertex3f = (void *)getglcore("glVertex3f");
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qglVertex3fv = (void *)getglcore("glVertex3fv");
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qglViewport = (void *)getglcore("glViewport");
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qglGetError = (void *)getglcore("glGetError");
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//various vertex array stuff.
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qglDrawElements = (void *)getglcore("glDrawElements");
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qglArrayElement = (void *)getglcore("glArrayElement");
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qglVertexPointer = (void *)getglcore("glVertexPointer");
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qglNormalPointer = (void *)getglcore("glNormalPointer");
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qglTexCoordPointer = (void *)getglcore("glTexCoordPointer");
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qglColorPointer = (void *)getglcore("glColorPointer");
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qglDrawArrays = (void *)getglcore("glDrawArrays");
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qglEnableClientState = (void *)getglcore("glEnableClientState");
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qglDisableClientState = (void *)getglcore("glDisableClientState");
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//fixme: definatly make non-core
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qglStencilOp = (void *)getglcore("glStencilOp");
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qglStencilFunc = (void *)getglcore("glStencilFunc");
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qglPushAttrib = (void *)getglcore("glPushAttrib");
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qglPopAttrib = (void *)getglcore("glPopAttrib");
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qglScissor = (void *)getglcore("glScissor");
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gl_vendor = glGetString (GL_VENDOR);
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Con_SafePrintf ("GL_VENDOR: %s\n", gl_vendor);
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gl_renderer = glGetString (GL_RENDERER);
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Con_SafePrintf ("GL_RENDERER: %s\n", gl_renderer);
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gl_version = glGetString (GL_VERSION);
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Con_SafePrintf ("GL_VERSION: %s\n", gl_version);
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gl_extensions = glGetString (GL_EXTENSIONS);
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Con_DPrintf ("GL_EXTENSIONS: %s\n", gl_extensions);
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GL_CheckExtensions (getglfunction);
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glClearColor (0,0,0,0); //clear to black so that it looks a little nicer on start.
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glClear(GL_COLOR_BUFFER_BIT);
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glCullFace(GL_FRONT);
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glEnable(GL_TEXTURE_2D);
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glEnable(GL_ALPHA_TEST);
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glAlphaFunc(GL_GREATER, 0.666);
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glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
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glShadeModel (GL_FLAT);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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// glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
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}
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unsigned int d_8to24rgbtable[256];
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