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| 2 | Here are listed the functions that TinyGL understands with the known |
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| 3 | limitations. The non mentionned functions are *not* implemented and |
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| 4 | must not be used. |
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| 5 | |
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| 6 | |
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| 7 | ************ glEnable / glDisable |
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| 8 | |
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| 9 | - The following flags are handled: |
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| 10 | |
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| 11 | GL_CULL_FACE, GL_LIGHTING, GL_COLOR_MATERIAL, GL_TEXTURE_2D, GL_NORMALIZE, |
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| 12 | GL_LIGHTx, GL_POLYGON_OFFSET_FILL, GL_POLYGON_OFFSET_POINT, |
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| 13 | GL_POLYGON_OFFSET_LINE |
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| 14 | |
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| 15 | |
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| 16 | - GL_DEPTH_TEST is accepted, but it is only used for lines. For all |
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| 17 | other primitives, Z buffer use is assumed. The DepthMode is |
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| 18 | hardcoded as GL_LESS (OpenGL default). |
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| 19 | |
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| 20 | ************ glShadeModel |
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| 21 | |
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| 22 | OK. |
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| 23 | |
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| 24 | ************ glCullFace |
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| 25 | |
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| 26 | OK. |
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| 27 | |
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| 28 | ************ glPolygonMode |
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| 29 | |
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| 30 | OK. |
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| 31 | |
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| 32 | ************ glBegin |
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| 33 | |
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| 34 | No tests are performed to prevent some functions of being executed |
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| 35 | between glBegin/glEnd. |
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| 36 | |
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| 37 | ************ glEnd |
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| 38 | |
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| 39 | OK. |
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| 40 | |
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| 41 | ************ glVertex |
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| 42 | |
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| 43 | Some prototypes are not implemented. |
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| 44 | |
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| 45 | |
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| 46 | ************ glColor |
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| 47 | |
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| 48 | Some prototypes are not implemented. |
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| 49 | |
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| 50 | ************ glNormal |
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| 51 | |
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| 52 | Some prototypes are not implemented. |
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| 53 | |
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| 54 | ************ glTexCoord |
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| 55 | |
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| 56 | - Some prototypes are not implemented. |
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| 57 | |
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| 58 | - The Matrix transformation is not applied yet. |
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| 59 | |
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| 60 | ************ glEdgeFlag |
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| 61 | |
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| 62 | OK. The edge handling has to be tested, although it is not much useful |
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| 63 | in TinyGL. |
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| 64 | |
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| 65 | ************ glMatrixMode / glLoadMatrixf / glLoadIdentity / glMultMatrixf / |
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| 66 | glPushMatrix / glPopMatrix / glRotatef / glTranslatef / glScalef / |
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| 67 | glFrustum |
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| 68 | |
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| 69 | - The prototypes with doubles are not implemented. |
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| 70 | |
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| 71 | ************ glViewport |
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| 72 | |
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| 73 | GlViewport calls a function pointers to tell glx (or another display |
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| 74 | system) to resize the Z buffer and the ximage. Made optional in |
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| 75 | version 0.2. |
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| 76 | |
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| 77 | ************ glGenLists / glIsList / glNewList / glEndList / glCallList |
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| 78 | |
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| 79 | OK. |
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| 80 | |
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| 81 | ************ glClear / glClearColor / glClearDepth |
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| 82 | |
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| 83 | The whole zbuffer and the colors are cleared in any case. The clear color |
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| 84 | can be redefined, by *not* the initial z value. |
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| 85 | |
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| 86 | ************ glRenderMode |
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| 87 | |
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| 88 | Only the modes GL_RENDER and GL_SELECT are implemented. |
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| 89 | |
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| 90 | ************ glSelectBuffer / glInitNames / glPushName / glPopName / glLoadName |
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| 91 | |
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| 92 | OK. |
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| 93 | |
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| 94 | ************ glGenTextures / glDeleteTextures / glBindTexture |
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| 95 | |
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| 96 | OK. These functions should be used to get the maximum performance with |
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| 97 | TinyGL. |
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| 98 | |
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| 99 | ************ glTexImage2D |
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| 100 | |
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| 101 | The function accepts only RGB UNSIGNED_BYTES bitmaps. They are |
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| 102 | internally resized to 256x256 so you'd better use that size. No |
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| 103 | mipmapping is implemented although it will come if asked. No borders |
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| 104 | are implemented. |
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| 105 | |
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| 106 | ************ glTexEnvi |
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| 107 | |
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| 108 | The only supported mode is GL_DECAL, although others are planned if |
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| 109 | asked. |
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| 110 | |
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| 111 | |
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| 112 | ************ glTexParameteri |
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| 113 | |
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| 114 | The other prototypes are not implemented. Only the follwing mode are |
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| 115 | implemented: |
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| 116 | |
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| 117 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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| 118 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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| 119 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); |
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| 120 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); |
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| 121 | |
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| 122 | ************ glPixelStorei |
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| 123 | |
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| 124 | The pixels are alware byte aligned. |
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| 125 | |
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| 126 | ************ glMaterialfv / glMaterialf / glColorMaterial |
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| 127 | |
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| 128 | OK. |
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| 129 | |
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| 130 | |
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| 131 | ************ glLightfv / glLightf / glLightModeli / glLightModelfv |
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| 132 | |
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| 133 | OK. The OpenGL lightening is implemented but not optimized. |
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| 134 | |
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| 135 | |
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| 136 | ************ glFlush |
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| 137 | |
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| 138 | Ignored. |
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| 139 | |
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| 140 | ************ glHint |
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| 141 | |
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| 142 | Ignored. |
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| 143 | |
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| 144 | ************ glGetIntegerv |
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| 145 | |
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| 146 | - only GL_VIEWPORT, GL_MAX_MODELVIEW_STACK_DEPTH, |
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| 147 | GL_MAX_PROJECTION_STACK_DEPTH, GL_MAX_LIGHTS, GL_MAX_TEXTURE_SIZE, |
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| 148 | GL_MAX_TEXTURE_STACK_DEPTH |
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| 149 | |
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| 150 | ************ glGetIntegerv |
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| 151 | |
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| 152 | - only GL_TEXTURE_MATRIX, GL_PROJECTION_MATRIX, GL_MODELVIEW_MATRIX, |
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| 153 | GL_LINE_WIDTH, GL_LINE_WIDTH_RANGE, GL_POINT_SIZE, GL_POINT_SIZE_RANGE |
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| 154 | |
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| 155 | ************ glPolygonOffset |
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| 156 | |
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| 157 | - only API implemented. |
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| 158 | |
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| 159 | ************ glEnableClientState, glDisableClientState, |
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| 160 | |
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| 161 | - No support for GL_INDEX_ARRAY_POINTER or GL_EDGE_FLAG_ARRAY_POINTER |
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| 162 | |
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| 163 | ************ glVertexPointer, glNormalPointer, |
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| 164 | glColorPointer, glTexureCoordPointer |
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| 165 | |
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| 166 | - OK |
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| 167 | |
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| 168 | ------------------------------------------------------------------------------ |
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| 169 | |
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| 170 | TinyGL GLX emulation: |
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| 171 | |
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| 172 | |
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| 173 | ************ glXQueryExtension |
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| 174 | |
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| 175 | Returns always True |
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| 176 | |
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| 177 | ************ glXChooseVisual |
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| 178 | |
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| 179 | Only 8 bit Pseudocolor or 16 bit Truecolor Visual are accepted. The |
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| 180 | attribute list is ignored. |
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| 181 | |
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| 182 | ************ glXCreateContext |
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| 183 | |
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| 184 | The sharing is not implemented although the code could handle it. |
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| 185 | |
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| 186 | ************ glXDestroyContext |
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| 187 | |
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| 188 | OK. |
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| 189 | |
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| 190 | ************ glXMakeCurrent |
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| 191 | |
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| 192 | Not all the syntax is supported yet, in particular with the 'NULL' or |
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| 193 | 'None' parameters. |
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| 194 | |
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| 195 | |
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| 196 | ************ glXSwapBuffers |
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| 197 | |
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| 198 | OK. |
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| 199 | |
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| 200 | ************ glXWaitGL / glXWaitX |
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| 201 | |
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| 202 | Ignored. |
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| 203 | |
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| 204 | |
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| 205 | See README.BEOS for BeOS limitations. |
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| 206 | |
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