]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - gl_backend.c
fix a pile of issues with calling conventions on GLES2 platforms by
[xonotic/darkplaces.git] / gl_backend.c
index 9f9cfad083b6eb7f614833c91608aaca65e8553f..a89ef857aced5b8dfb9aba1012d1c4d8545ffe2a 100644 (file)
@@ -8,6 +8,94 @@ extern LPDIRECT3DDEVICE9 vid_d3d9dev;
 extern D3DCAPS9 vid_d3d9caps;
 #endif
 
+// on GLES we have to use some proper #define's
+#ifndef GL_FRAMEBUFFER
+#define GL_FRAMEBUFFER                                   0x8D40
+#define GL_DEPTH_ATTACHMENT                              0x8D00
+#define GL_COLOR_ATTACHMENT0                             0x8CE0
+#define GL_INVALID_FRAMEBUFFER_OPERATION                 0x0506
+#endif
+#ifndef GL_COLOR_ATTACHMENT1
+#define GL_COLOR_ATTACHMENT1                             0x8CE1
+#define GL_COLOR_ATTACHMENT2                             0x8CE2
+#define GL_COLOR_ATTACHMENT3                             0x8CE3
+#define GL_COLOR_ATTACHMENT4                             0x8CE4
+#define GL_COLOR_ATTACHMENT5                             0x8CE5
+#define GL_COLOR_ATTACHMENT6                             0x8CE6
+#define GL_COLOR_ATTACHMENT7                             0x8CE7
+#define GL_COLOR_ATTACHMENT8                             0x8CE8
+#define GL_COLOR_ATTACHMENT9                             0x8CE9
+#define GL_COLOR_ATTACHMENT10                            0x8CEA
+#define GL_COLOR_ATTACHMENT11                            0x8CEB
+#define GL_COLOR_ATTACHMENT12                            0x8CEC
+#define GL_COLOR_ATTACHMENT13                            0x8CED
+#define GL_COLOR_ATTACHMENT14                            0x8CEE
+#define GL_COLOR_ATTACHMENT15                            0x8CEF
+#endif
+#ifndef GL_ARRAY_BUFFER
+#define GL_ARRAY_BUFFER               0x8892
+#define GL_ELEMENT_ARRAY_BUFFER       0x8893
+#endif
+//#ifndef GL_VERTEX_ARRAY
+//#define GL_VERTEX_ARRAY                              0x8074
+//#define GL_COLOR_ARRAY                               0x8076
+//#define GL_TEXTURE_COORD_ARRAY                       0x8078
+//#endif
+#ifndef GL_TEXTURE0
+#define GL_TEXTURE0                                    0x84C0
+#define GL_TEXTURE1                                    0x84C1
+#define GL_TEXTURE2                                    0x84C2
+#define GL_TEXTURE3                                    0x84C3
+#define GL_TEXTURE4                                    0x84C4
+#define GL_TEXTURE5                                    0x84C5
+#define GL_TEXTURE6                                    0x84C6
+#define GL_TEXTURE7                                    0x84C7
+#define GL_TEXTURE8                                    0x84C8
+#define GL_TEXTURE9                                    0x84C9
+#define GL_TEXTURE10                           0x84CA
+#define GL_TEXTURE11                           0x84CB
+#define GL_TEXTURE12                           0x84CC
+#define GL_TEXTURE13                           0x84CD
+#define GL_TEXTURE14                           0x84CE
+#define GL_TEXTURE15                           0x84CF
+#define GL_TEXTURE16                           0x84D0
+#define GL_TEXTURE17                           0x84D1
+#define GL_TEXTURE18                           0x84D2
+#define GL_TEXTURE19                           0x84D3
+#define GL_TEXTURE20                           0x84D4
+#define GL_TEXTURE21                           0x84D5
+#define GL_TEXTURE22                           0x84D6
+#define GL_TEXTURE23                           0x84D7
+#define GL_TEXTURE24                           0x84D8
+#define GL_TEXTURE25                           0x84D9
+#define GL_TEXTURE26                           0x84DA
+#define GL_TEXTURE27                           0x84DB
+#define GL_TEXTURE28                           0x84DC
+#define GL_TEXTURE29                           0x84DD
+#define GL_TEXTURE30                           0x84DE
+#define GL_TEXTURE31                           0x84DF
+#endif
+
+#ifndef GL_TEXTURE_3D
+#define GL_TEXTURE_3D                          0x806F
+#endif
+#ifndef GL_TEXTURE_CUBE_MAP
+#define GL_TEXTURE_CUBE_MAP                0x8513
+#endif
+//#ifndef GL_MODELVIEW
+//#define GL_MODELVIEW                         0x1700
+//#endif
+//#ifndef GL_PROJECTION
+//#define GL_PROJECTION                                0x1701
+//#endif
+//#ifndef GL_DECAL
+//#define GL_DECAL                             0x2101
+//#endif
+//#ifndef GL_INTERPOLATE
+//#define GL_INTERPOLATE                               0x8575
+//#endif
+
+
 #define MAX_RENDERTARGETS 4
 
 cvar_t gl_mesh_drawrangeelements = {0, "gl_mesh_drawrangeelements", "1", "use glDrawRangeElements function if available instead of glDrawElements (for performance comparisons or bug testing)"};
@@ -84,8 +172,8 @@ void GL_PrintError(int errornumber, const char *filename, int linenumber)
                Con_Printf("GL_TABLE_TOO_LARGE at %s:%i\n", filename, linenumber);
                break;
 #endif
-#ifdef GL_INVALID_FRAMEBUFFER_OPERATION_EXT
-       case GL_INVALID_FRAMEBUFFER_OPERATION_EXT:
+#ifdef GL_INVALID_FRAMEBUFFER_OPERATION
+       case GL_INVALID_FRAMEBUFFER_OPERATION:
                Con_Printf("GL_INVALID_FRAMEBUFFER_OPERATION at %s:%i\n", filename, linenumber);
                break;
 #endif
@@ -331,7 +419,7 @@ static void gl_backend_start(void)
        case RENDERPATH_GLES2:
                // fetch current fbo here (default fbo is not 0 on some GLES devices)
                if (vid.support.ext_framebuffer_object)
-                       qglGetIntegerv(GL_FRAMEBUFFER_BINDING_EXT, &gl_state.defaultframebufferobject);
+                       qglGetIntegerv(GL_FRAMEBUFFER_BINDING, &gl_state.defaultframebufferobject);
                break;
        case RENDERPATH_D3D9:
 #ifdef SUPPORTD3D
@@ -1091,6 +1179,7 @@ void R_SetViewport(const r_viewport_t *v)
        case RENDERPATH_GL13:
        case RENDERPATH_GL11:
        case RENDERPATH_GLES1:
+#ifdef GL_PROJECTION
                CHECKGLERROR
                qglViewport(v->x, v->y, v->width, v->height);CHECKGLERROR
                // Load the projection matrix into OpenGL
@@ -1098,6 +1187,7 @@ void R_SetViewport(const r_viewport_t *v)
                Matrix4x4_ToArrayFloatGL(&gl_projectionmatrix, m);
                qglLoadMatrixf(m);CHECKGLERROR
                qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
+#endif
                break;
        case RENDERPATH_D3D9:
 #ifdef SUPPORTD3D
@@ -1145,7 +1235,7 @@ static void GL_BindVBO(int bufferobject)
        {
                gl_state.vertexbufferobject = bufferobject;
                CHECKGLERROR
-               qglBindBufferARB(GL_ARRAY_BUFFER_ARB, bufferobject);CHECKGLERROR
+               qglBindBufferARB(GL_ARRAY_BUFFER, bufferobject);CHECKGLERROR
        }
 }
 
@@ -1155,7 +1245,7 @@ static void GL_BindEBO(int bufferobject)
        {
                gl_state.elementbufferobject = bufferobject;
                CHECKGLERROR
-               qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, bufferobject);CHECKGLERROR
+               qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, bufferobject);CHECKGLERROR
        }
 }
 
@@ -1173,11 +1263,11 @@ int R_Mesh_CreateFramebufferObject(rtexture_t *depthtexture, rtexture_t *colorte
                        return 0;
                qglGenFramebuffersEXT(1, (GLuint*)&temp);CHECKGLERROR
                R_Mesh_SetRenderTargets(temp, NULL, NULL, NULL, NULL, NULL);
-               if (depthtexture) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, depthtexture->gltexturetypeenum, R_GetTexture(depthtexture), 0);CHECKGLERROR
-               if (colortexture) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, colortexture->gltexturetypeenum, R_GetTexture(colortexture), 0);CHECKGLERROR
-               if (colortexture2) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT1_EXT, colortexture2->gltexturetypeenum, R_GetTexture(colortexture2), 0);CHECKGLERROR
-               if (colortexture3) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT2_EXT, colortexture3->gltexturetypeenum, R_GetTexture(colortexture3), 0);CHECKGLERROR
-               if (colortexture4) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT3_EXT, colortexture4->gltexturetypeenum, R_GetTexture(colortexture4), 0);CHECKGLERROR
+               if (depthtexture) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, depthtexture->gltexturetypeenum, R_GetTexture(depthtexture), 0);CHECKGLERROR
+               if (colortexture) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, colortexture->gltexturetypeenum, R_GetTexture(colortexture), 0);CHECKGLERROR
+               if (colortexture2) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT1, colortexture2->gltexturetypeenum, R_GetTexture(colortexture2), 0);CHECKGLERROR
+               if (colortexture3) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, colortexture3->gltexturetypeenum, R_GetTexture(colortexture3), 0);CHECKGLERROR
+               if (colortexture4) qglFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT3, colortexture4->gltexturetypeenum, R_GetTexture(colortexture4), 0);CHECKGLERROR
                return temp;
        case RENDERPATH_D3D9:
        case RENDERPATH_D3D10:
@@ -1258,7 +1348,7 @@ void R_Mesh_ResetRenderTargets(void)
                if (gl_state.framebufferobject)
                {
                        gl_state.framebufferobject = 0;
-                       qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, gl_state.defaultframebufferobject);
+                       qglBindFramebufferEXT(GL_FRAMEBUFFER, gl_state.defaultframebufferobject);
                }
                break;
        case RENDERPATH_D3D9:
@@ -1302,7 +1392,7 @@ void R_Mesh_SetRenderTargets(int fbo, rtexture_t *depthtexture, rtexture_t *colo
                if (gl_state.framebufferobject != fbo)
                {
                        gl_state.framebufferobject = fbo;
-                       qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, gl_state.framebufferobject ? gl_state.framebufferobject : gl_state.defaultframebufferobject);
+                       qglBindFramebufferEXT(GL_FRAMEBUFFER, gl_state.framebufferobject ? gl_state.framebufferobject : gl_state.defaultframebufferobject);
                }
                break;
        case RENDERPATH_D3D9:
@@ -1432,6 +1522,7 @@ static void GL_Backend_ResetState(void)
        case RENDERPATH_GL11:
        case RENDERPATH_GL13:
        case RENDERPATH_GLES1:
+#ifdef GL_ALPHA_TEST
                CHECKGLERROR
 
                qglColorMask(1, 1, 1, 1);CHECKGLERROR
@@ -1448,14 +1539,14 @@ static void GL_Backend_ResetState(void)
 
                if (vid.support.arb_vertex_buffer_object)
                {
-                       qglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
-                       qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
+                       qglBindBufferARB(GL_ARRAY_BUFFER, 0);
+                       qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);
                }
 
                if (vid.support.ext_framebuffer_object)
                {
-                       //qglBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
-                       qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
+                       //qglBindRenderbufferEXT(GL_RENDERBUFFER, 0);
+                       qglBindFramebufferEXT(GL_FRAMEBUFFER, 0);
                }
 
                qglVertexPointer(3, GL_FLOAT, sizeof(float[3]), NULL);CHECKGLERROR
@@ -1466,7 +1557,7 @@ static void GL_Backend_ResetState(void)
                qglColor4f(1, 1, 1, 1);CHECKGLERROR
 
                if (vid.support.ext_framebuffer_object)
-                       qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, gl_state.framebufferobject);
+                       qglBindFramebufferEXT(GL_FRAMEBUFFER, gl_state.framebufferobject);
 
                gl_state.unit = MAX_TEXTUREUNITS;
                gl_state.clientunit = MAX_TEXTUREUNITS;
@@ -1483,8 +1574,8 @@ static void GL_Backend_ResetState(void)
                        }
                        if (vid.support.arb_texture_cube_map)
                        {
-                               qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
-                               qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
+                               qglDisable(GL_TEXTURE_CUBE_MAP);CHECKGLERROR
+                               qglBindTexture(GL_TEXTURE_CUBE_MAP, 0);CHECKGLERROR
                        }
                        GL_BindVBO(0);
                        qglTexCoordPointer(2, GL_FLOAT, sizeof(float[2]), NULL);CHECKGLERROR
@@ -1495,6 +1586,7 @@ static void GL_Backend_ResetState(void)
                        qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);CHECKGLERROR
                }
                CHECKGLERROR
+#endif
                break;
        case RENDERPATH_SOFT:
                DPSOFTRAST_ColorMask(1,1,1,1);
@@ -1520,11 +1612,11 @@ static void GL_Backend_ResetState(void)
                qglPolygonOffset(gl_state.polygonoffset[0], gl_state.polygonoffset[1]);
                if (vid.support.arb_vertex_buffer_object)
                {
-                       qglBindBufferARB(GL_ARRAY_BUFFER_ARB, 0);
-                       qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, 0);
+                       qglBindBufferARB(GL_ARRAY_BUFFER, 0);
+                       qglBindBufferARB(GL_ELEMENT_ARRAY_BUFFER, 0);
                }
                if (vid.support.ext_framebuffer_object)
-                       qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, gl_state.defaultframebufferobject);
+                       qglBindFramebufferEXT(GL_FRAMEBUFFER, gl_state.defaultframebufferobject);
                qglEnableVertexAttribArray(GLSLATTRIB_POSITION);
                qglVertexAttribPointer(GLSLATTRIB_POSITION, 3, GL_FLOAT, false, sizeof(float[3]), NULL);CHECKGLERROR
                qglDisableVertexAttribArray(GLSLATTRIB_COLOR);
@@ -1542,7 +1634,7 @@ static void GL_Backend_ResetState(void)
                        }
                        if (vid.support.arb_texture_cube_map)
                        {
-                               qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, 0);CHECKGLERROR
+                               qglBindTexture(GL_TEXTURE_CUBE_MAP, 0);CHECKGLERROR
                        }
                }
                for (i = 0;i < vid.texarrayunits;i++)
@@ -1571,7 +1663,7 @@ void GL_ActiveTexture(unsigned int num)
                        if (qglActiveTexture)
                        {
                                CHECKGLERROR
-                               qglActiveTexture(GL_TEXTURE0_ARB + gl_state.unit);
+                               qglActiveTexture(GL_TEXTURE0 + gl_state.unit);
                                CHECKGLERROR
                        }
                        break;
@@ -1598,7 +1690,7 @@ void GL_ClientActiveTexture(unsigned int num)
                        if (qglActiveTexture)
                        {
                                CHECKGLERROR
-                               qglClientActiveTexture(GL_TEXTURE0_ARB + gl_state.clientunit);
+                               qglClientActiveTexture(GL_TEXTURE0 + gl_state.clientunit);
                                CHECKGLERROR
                        }
                        break;
@@ -1811,7 +1903,11 @@ void GL_DepthRange(float nearfrac, float farfrac)
                case RENDERPATH_GL20:
                case RENDERPATH_GLES1:
                case RENDERPATH_GLES2:
+#ifdef USE_GLES2
+                       qglDepthRangef(gl_state.depthrange[0], gl_state.depthrange[1]);
+#else
                        qglDepthRange(gl_state.depthrange[0], gl_state.depthrange[1]);
+#endif
                        break;
                case RENDERPATH_D3D9:
 #ifdef SUPPORTD3D
@@ -1867,6 +1963,7 @@ void R_SetStencilSeparate(qboolean enable, int writemask, int frontfail, int fro
                }
                else if (vid.support.ext_stencil_two_side)
                {
+#ifdef GL_STENCIL_TEST_TWO_SIDE_EXT
                        qglEnable(GL_STENCIL_TEST_TWO_SIDE_EXT);CHECKGLERROR
                        qglActiveStencilFaceEXT(GL_FRONT);CHECKGLERROR
                        qglStencilMask(writemask);CHECKGLERROR
@@ -1876,6 +1973,7 @@ void R_SetStencilSeparate(qboolean enable, int writemask, int frontfail, int fro
                        qglStencilMask(writemask);CHECKGLERROR
                        qglStencilOp(backfail, backzfail, backzpass);CHECKGLERROR
                        qglStencilFunc(backcompare, comparereference, comparemask);CHECKGLERROR
+#endif
                }
                break;
        case RENDERPATH_D3D9:
@@ -1927,7 +2025,9 @@ void R_SetStencil(qboolean enable, int writemask, int fail, int zfail, int zpass
                }
                if (vid.support.ext_stencil_two_side)
                {
+#ifdef GL_STENCIL_TEST_TWO_SIDE_EXT
                        qglDisable(GL_STENCIL_TEST_TWO_SIDE_EXT);CHECKGLERROR
+#endif
                }
                qglStencilMask(writemask);CHECKGLERROR
                qglStencilOp(fail, zfail, zpass);CHECKGLERROR
@@ -2123,6 +2223,7 @@ void GL_AlphaTest(int state)
                case RENDERPATH_GL11:
                case RENDERPATH_GL13:
                case RENDERPATH_GLES1:
+#ifdef GL_ALPHA_TEST
                        // only fixed function uses alpha test, other paths use pixel kill capability in shaders
                        CHECKGLERROR
                        if (gl_state.alphatest)
@@ -2133,6 +2234,7 @@ void GL_AlphaTest(int state)
                        {
                                qglDisable(GL_ALPHA_TEST);CHECKGLERROR
                        }
+#endif
                        break;
                case RENDERPATH_D3D9:
                case RENDERPATH_D3D10:
@@ -2162,6 +2264,7 @@ void GL_AlphaToCoverage(qboolean state)
                case RENDERPATH_SOFT:
                        break;
                case RENDERPATH_GL20:
+#ifdef GL_SAMPLE_ALPHA_TO_COVERAGE_ARB
                        // alpha to coverage turns the alpha value of the pixel into 0%, 25%, 50%, 75% or 100% by masking the multisample fragments accordingly
                        CHECKGLERROR
                        if (gl_state.alphatocoverage)
@@ -2174,6 +2277,7 @@ void GL_AlphaToCoverage(qboolean state)
                                qglDisable(GL_SAMPLE_ALPHA_TO_COVERAGE_ARB);CHECKGLERROR
 //                             qglDisable(GL_MULTISAMPLE_ARB);CHECKGLERROR
                        }
+#endif
                        break;
                }
        }
@@ -2346,7 +2450,11 @@ void GL_Clear(int mask, const float *colorvalue, float depthvalue, int stencilva
                }
                if (mask & GL_DEPTH_BUFFER_BIT)
                {
+#ifdef USE_GLES2
+                       qglClearDepthf(depthvalue);CHECKGLERROR
+#else
                        qglClearDepth(depthvalue);CHECKGLERROR
+#endif
                }
                if (mask & GL_STENCIL_BUFFER_BIT)
                {
@@ -2499,8 +2607,10 @@ unsigned int GL_Backend_CompileProgram(int vertexstrings_count, const char **ver
        qglBindAttribLocation(programobject, GLSLATTRIB_TEXCOORD5, "Attrib_TexCoord5");
        qglBindAttribLocation(programobject, GLSLATTRIB_TEXCOORD6, "Attrib_TexCoord6");
        qglBindAttribLocation(programobject, GLSLATTRIB_TEXCOORD7, "Attrib_TexCoord7");
+#ifndef USE_GLES2
        if(vid.support.gl20shaders130)
                qglBindFragDataLocation(programobject, 0, "dp_FragColor");
+#endif
 
        if (vertexstrings_count && !GL_Backend_CompileShader(programobject, GL_VERTEX_SHADER, "vertex", vertexstrings_count, vertexstrings_list))
                goto cleanup;
@@ -2714,6 +2824,7 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
                        CHECKGLERROR
                        if (gl_mesh_testmanualfeeding.integer)
                        {
+#ifndef USE_GLES2
                                unsigned int i, j, element;
                                const GLfloat *p;
                                qglBegin(GL_TRIANGLES);
@@ -2814,13 +2925,13 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
                                                                        if (vid.texarrayunits > 1)
                                                                        {
                                                                                if (gl_state.units[j].pointer_texcoord_components == 4)
-                                                                                       qglMultiTexCoord4f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2], p[3]);
+                                                                                       qglMultiTexCoord4f(GL_TEXTURE0 + j, p[0], p[1], p[2], p[3]);
                                                                                else if (gl_state.units[j].pointer_texcoord_components == 3)
-                                                                                       qglMultiTexCoord3f(GL_TEXTURE0_ARB + j, p[0], p[1], p[2]);
+                                                                                       qglMultiTexCoord3f(GL_TEXTURE0 + j, p[0], p[1], p[2]);
                                                                                else if (gl_state.units[j].pointer_texcoord_components == 2)
-                                                                                       qglMultiTexCoord2f(GL_TEXTURE0_ARB + j, p[0], p[1]);
+                                                                                       qglMultiTexCoord2f(GL_TEXTURE0 + j, p[0], p[1]);
                                                                                else
-                                                                                       qglMultiTexCoord1f(GL_TEXTURE0_ARB + j, p[0]);
+                                                                                       qglMultiTexCoord1f(GL_TEXTURE0 + j, p[0]);
                                                                        }
                                                                        else
                                                                        {
@@ -2840,13 +2951,13 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
                                                                        if (vid.texarrayunits > 1)
                                                                        {
                                                                                if (gl_state.units[j].pointer_texcoord_components == 4)
-                                                                                       qglMultiTexCoord4f(GL_TEXTURE0_ARB + j, s[0], s[1], s[2], s[3]);
+                                                                                       qglMultiTexCoord4f(GL_TEXTURE0 + j, s[0], s[1], s[2], s[3]);
                                                                                else if (gl_state.units[j].pointer_texcoord_components == 3)
-                                                                                       qglMultiTexCoord3f(GL_TEXTURE0_ARB + j, s[0], s[1], s[2]);
+                                                                                       qglMultiTexCoord3f(GL_TEXTURE0 + j, s[0], s[1], s[2]);
                                                                                else if (gl_state.units[j].pointer_texcoord_components == 2)
-                                                                                       qglMultiTexCoord2f(GL_TEXTURE0_ARB + j, s[0], s[1]);
+                                                                                       qglMultiTexCoord2f(GL_TEXTURE0 + j, s[0], s[1]);
                                                                                else if (gl_state.units[j].pointer_texcoord_components == 1)
-                                                                                       qglMultiTexCoord1f(GL_TEXTURE0_ARB + j, s[0]);
+                                                                                       qglMultiTexCoord1f(GL_TEXTURE0 + j, s[0]);
                                                                        }
                                                                        else
                                                                        {
@@ -2866,13 +2977,13 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
                                                                        if (vid.texarrayunits > 1)
                                                                        {
                                                                                if (gl_state.units[j].pointer_texcoord_components == 4)
-                                                                                       qglMultiTexCoord4f(GL_TEXTURE0_ARB + j, sb[0], sb[1], sb[2], sb[3]);
+                                                                                       qglMultiTexCoord4f(GL_TEXTURE0 + j, sb[0], sb[1], sb[2], sb[3]);
                                                                                else if (gl_state.units[j].pointer_texcoord_components == 3)
-                                                                                       qglMultiTexCoord3f(GL_TEXTURE0_ARB + j, sb[0], sb[1], sb[2]);
+                                                                                       qglMultiTexCoord3f(GL_TEXTURE0 + j, sb[0], sb[1], sb[2]);
                                                                                else if (gl_state.units[j].pointer_texcoord_components == 2)
-                                                                                       qglMultiTexCoord2f(GL_TEXTURE0_ARB + j, sb[0], sb[1]);
+                                                                                       qglMultiTexCoord2f(GL_TEXTURE0 + j, sb[0], sb[1]);
                                                                                else if (gl_state.units[j].pointer_texcoord_components == 1)
-                                                                                       qglMultiTexCoord1f(GL_TEXTURE0_ARB + j, sb[0]);
+                                                                                       qglMultiTexCoord1f(GL_TEXTURE0 + j, sb[0]);
                                                                        }
                                                                        else
                                                                        {
@@ -2915,16 +3026,19 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
                                }
                                qglEnd();
                                CHECKGLERROR
+#endif
                        }
                        else if (bufferobject3s)
                        {
                                GL_BindEBO(bufferobject3s);
+#ifndef USE_GLES2
                                if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
                                {
                                        qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices - 1, numelements, GL_UNSIGNED_SHORT, (void *)bufferoffset3s);
                                        CHECKGLERROR
                                }
                                else
+#endif
                                {
                                        qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_SHORT, (void *)(firsttriangle * sizeof(unsigned short[3])));
                                        CHECKGLERROR
@@ -2933,12 +3047,14 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
                        else if (bufferobject3i)
                        {
                                GL_BindEBO(bufferobject3i);
+#ifndef USE_GLES2
                                if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
                                {
                                        qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices - 1, numelements, GL_UNSIGNED_INT, (void *)bufferoffset3i);
                                        CHECKGLERROR
                                }
                                else
+#endif
                                {
                                        qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, (void *)(firsttriangle * sizeof(unsigned int[3])));
                                        CHECKGLERROR
@@ -2947,12 +3063,14 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
                        else if (element3s)
                        {
                                GL_BindEBO(0);
+#ifndef USE_GLES2
                                if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
                                {
                                        qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices - 1, numelements, GL_UNSIGNED_SHORT, element3s);
                                        CHECKGLERROR
                                }
                                else
+#endif
                                {
                                        qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_SHORT, element3s);
                                        CHECKGLERROR
@@ -2961,12 +3079,14 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
                        else if (element3i)
                        {
                                GL_BindEBO(0);
+#ifndef USE_GLES2
                                if (gl_mesh_drawrangeelements.integer && qglDrawRangeElements != NULL)
                                {
                                        qglDrawRangeElements(GL_TRIANGLES, firstvertex, firstvertex + numvertices - 1, numelements, GL_UNSIGNED_INT, element3i);
                                        CHECKGLERROR
                                }
                                else
+#endif
                                {
                                        qglDrawElements(GL_TRIANGLES, numelements, GL_UNSIGNED_INT, element3i);
                                        CHECKGLERROR
@@ -3028,8 +3148,8 @@ void R_Mesh_Draw(int firstvertex, int numvertices, int firsttriangle, int numtri
                                GLint           attribsize;
                                GLenum          attribtype;
                                GLchar          attribname[1024];
-                               r = qglCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);CHECKGLERROR
-                               if (r != GL_FRAMEBUFFER_COMPLETE_EXT)
+                               r = qglCheckFramebufferStatusEXT(GL_FRAMEBUFFER);CHECKGLERROR
+                               if (r != GL_FRAMEBUFFER_COMPLETE)
                                        Con_DPrintf("fbo %i not complete (default %i)\n", gl_state.framebufferobject, gl_state.defaultframebufferobject);
 #ifndef GL_CURRENT_PROGRAM
 #define GL_CURRENT_PROGRAM 0x8B8D
@@ -3119,7 +3239,7 @@ void R_Mesh_UpdateMeshBuffer(r_meshbuffer_t *buffer, const void *data, size_t si
                        GL_BindEBO(buffer->bufferobject);
                else
                        GL_BindVBO(buffer->bufferobject);
-               qglBufferDataARB(buffer->isindexbuffer ? GL_ELEMENT_ARRAY_BUFFER_ARB : GL_ARRAY_BUFFER_ARB, size, data, buffer->isdynamic ? GL_STREAM_DRAW_ARB : GL_STATIC_DRAW_ARB);
+               qglBufferDataARB(buffer->isindexbuffer ? GL_ELEMENT_ARRAY_BUFFER : GL_ARRAY_BUFFER, size, data, buffer->isdynamic ? GL_STREAM_DRAW : GL_STATIC_DRAW);
                break;
        case RENDERPATH_D3D9:
 #ifdef SUPPORTD3D
@@ -3297,6 +3417,7 @@ void R_Mesh_ColorPointer(int components, int gltype, size_t stride, const void *
        case RENDERPATH_GL11:
        case RENDERPATH_GL13:
        case RENDERPATH_GLES1:
+#ifdef GL_MODELVIEW
                CHECKGLERROR
                if (pointer)
                {
@@ -3333,6 +3454,7 @@ void R_Mesh_ColorPointer(int components, int gltype, size_t stride, const void *
                                qglColor4f(gl_state.color4f[0], gl_state.color4f[1], gl_state.color4f[2], gl_state.color4f[3]);CHECKGLERROR
                        }
                }
+#endif
                break;
        case RENDERPATH_GL20:
        case RENDERPATH_GLES2:
@@ -3392,6 +3514,7 @@ void R_Mesh_TexCoordPointer(unsigned int unitnum, int components, int gltype, si
        case RENDERPATH_GL11:
        case RENDERPATH_GL13:
        case RENDERPATH_GLES1:
+#ifdef GL_MODELVIEW
                CHECKGLERROR
                if (pointer)
                {
@@ -3427,6 +3550,7 @@ void R_Mesh_TexCoordPointer(unsigned int unitnum, int components, int gltype, si
                                qglDisableClientState(GL_TEXTURE_COORD_ARRAY);CHECKGLERROR
                        }
                }
+#endif
                break;
        case RENDERPATH_GL20:
        case RENDERPATH_GLES2:
@@ -3480,7 +3604,7 @@ int R_Mesh_TexBound(unsigned int unitnum, int id)
                return unit->t2d;
        if (id == GL_TEXTURE_3D)
                return unit->t3d;
-       if (id == GL_TEXTURE_CUBE_MAP_ARB)
+       if (id == GL_TEXTURE_CUBE_MAP)
                return unit->tcubemap;
        return 0;
 }
@@ -3583,7 +3707,7 @@ void R_Mesh_TexBind(unsigned int unitnum, rtexture_t *tex)
                {
                case GL_TEXTURE_2D: if (unit->t2d != texnum) {GL_ActiveTexture(unitnum);unit->t2d = texnum;qglBindTexture(GL_TEXTURE_2D, unit->t2d);CHECKGLERROR}break;
                case GL_TEXTURE_3D: if (unit->t3d != texnum) {GL_ActiveTexture(unitnum);unit->t3d = texnum;qglBindTexture(GL_TEXTURE_3D, unit->t3d);CHECKGLERROR}break;
-               case GL_TEXTURE_CUBE_MAP_ARB: if (unit->tcubemap != texnum) {GL_ActiveTexture(unitnum);unit->tcubemap = texnum;qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR}break;
+               case GL_TEXTURE_CUBE_MAP: if (unit->tcubemap != texnum) {GL_ActiveTexture(unitnum);unit->tcubemap = texnum;qglBindTexture(GL_TEXTURE_CUBE_MAP, unit->tcubemap);CHECKGLERROR}break;
                }
                break;
        case RENDERPATH_GL11:
@@ -3604,7 +3728,7 @@ void R_Mesh_TexBind(unsigned int unitnum, rtexture_t *tex)
                        case GL_TEXTURE_3D:
                                tex3d = texnum;
                                break;
-                       case GL_TEXTURE_CUBE_MAP_ARB:
+                       case GL_TEXTURE_CUBE_MAP:
                                texcubemap = texnum;
                                break;
                        }
@@ -3659,18 +3783,18 @@ void R_Mesh_TexBind(unsigned int unitnum, rtexture_t *tex)
                        {
                                if (unit->tcubemap == 0)
                                {
-                                       qglEnable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
+                                       qglEnable(GL_TEXTURE_CUBE_MAP);CHECKGLERROR
                                }
                        }
                        else
                        {
                                if (unit->tcubemap)
                                {
-                                       qglDisable(GL_TEXTURE_CUBE_MAP_ARB);CHECKGLERROR
+                                       qglDisable(GL_TEXTURE_CUBE_MAP);CHECKGLERROR
                                }
                        }
                        unit->tcubemap = texcubemap;
-                       qglBindTexture(GL_TEXTURE_CUBE_MAP_ARB, unit->tcubemap);CHECKGLERROR
+                       qglBindTexture(GL_TEXTURE_CUBE_MAP, unit->tcubemap);CHECKGLERROR
                }
                break;
        case RENDERPATH_D3D9:
@@ -3737,6 +3861,7 @@ void R_Mesh_TexMatrix(unsigned int unitnum, const matrix4x4_t *matrix)
        case RENDERPATH_GL20:
        case RENDERPATH_GLES1:
        case RENDERPATH_GLES2:
+#ifdef GL_MODELVIEW
                if (matrix && matrix->m[3][3])
                {
                        // texmatrix specified, check if it is different
@@ -3767,6 +3892,7 @@ void R_Mesh_TexMatrix(unsigned int unitnum, const matrix4x4_t *matrix)
                                qglMatrixMode(GL_MODELVIEW);CHECKGLERROR
                        }
                }
+#endif
                break;
        case RENDERPATH_D3D9:
        case RENDERPATH_D3D10:
@@ -3789,6 +3915,7 @@ void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, i
                break;
        case RENDERPATH_GL13:
        case RENDERPATH_GLES1:
+#ifdef GL_TEXTURE_ENV
                // GL_ARB_texture_env_combine
                if (!combinergb)
                        combinergb = GL_MODULATE;
@@ -3801,31 +3928,31 @@ void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, i
                if (combinergb != combinealpha || rgbscale != 1 || alphascale != 1)
                {
                        if (combinergb == GL_DECAL)
-                               combinergb = GL_INTERPOLATE_ARB;
-                       if (unit->combine != GL_COMBINE_ARB)
+                               combinergb = GL_INTERPOLATE;
+                       if (unit->combine != GL_COMBINE)
                        {
-                               unit->combine = GL_COMBINE_ARB;
+                               unit->combine = GL_COMBINE;
                                GL_ActiveTexture(unitnum);
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_ARB);CHECKGLERROR
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB_ARB, GL_TEXTURE);CHECKGLERROR // for GL_INTERPOLATE_ARB mode
+                               qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);CHECKGLERROR
+                               qglTexEnvi(GL_TEXTURE_ENV, GL_SOURCE2_RGB, GL_TEXTURE);CHECKGLERROR // for GL_INTERPOLATE mode
                        }
                        if (unit->combinergb != combinergb)
                        {
                                unit->combinergb = combinergb;
                                GL_ActiveTexture(unitnum);
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB_ARB, unit->combinergb);CHECKGLERROR
+                               qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_RGB, unit->combinergb);CHECKGLERROR
                        }
                        if (unit->combinealpha != combinealpha)
                        {
                                unit->combinealpha = combinealpha;
                                GL_ActiveTexture(unitnum);
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA_ARB, unit->combinealpha);CHECKGLERROR
+                               qglTexEnvi(GL_TEXTURE_ENV, GL_COMBINE_ALPHA, unit->combinealpha);CHECKGLERROR
                        }
                        if (unit->rgbscale != rgbscale)
                        {
                                unit->rgbscale = rgbscale;
                                GL_ActiveTexture(unitnum);
-                               qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE_ARB, unit->rgbscale);CHECKGLERROR
+                               qglTexEnvi(GL_TEXTURE_ENV, GL_RGB_SCALE, unit->rgbscale);CHECKGLERROR
                        }
                        if (unit->alphascale != alphascale)
                        {
@@ -3843,9 +3970,11 @@ void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, i
                                qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combine);CHECKGLERROR
                        }
                }
+#endif
                break;
        case RENDERPATH_GL11:
                // normal GL texenv
+#ifdef GL_TEXTURE_ENV
                if (!combinergb)
                        combinergb = GL_MODULATE;
                if (unit->combine != combinergb)
@@ -3854,6 +3983,7 @@ void R_Mesh_TexCombine(unsigned int unitnum, int combinergb, int combinealpha, i
                        GL_ActiveTexture(unitnum);
                        qglTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, unit->combine);CHECKGLERROR
                }
+#endif
                break;
        case RENDERPATH_D3D9:
        case RENDERPATH_D3D10:
@@ -4488,7 +4618,7 @@ void GL_BlendEquationSubtract(qboolean negated)
                case RENDERPATH_GL20:
                case RENDERPATH_GLES1:
                case RENDERPATH_GLES2:
-                       qglBlendEquationEXT(GL_FUNC_REVERSE_SUBTRACT_EXT);
+                       qglBlendEquationEXT(GL_FUNC_REVERSE_SUBTRACT);
                        break;
                case RENDERPATH_D3D9:
 #ifdef SUPPORTD3D
@@ -4515,7 +4645,7 @@ void GL_BlendEquationSubtract(qboolean negated)
                case RENDERPATH_GL20:
                case RENDERPATH_GLES1:
                case RENDERPATH_GLES2:
-                       qglBlendEquationEXT(GL_FUNC_ADD_EXT);
+                       qglBlendEquationEXT(GL_FUNC_ADD);
                        break;
                case RENDERPATH_D3D9:
 #ifdef SUPPORTD3D