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      1 /*
      2 * Copyright (C) 2011 The Android Open Source Project
      3 *
      4 * Licensed under the Apache License, Version 2.0 (the "License");
      5 * you may not use this file except in compliance with the License.
      6 * You may obtain a copy of the License at
      7 *
      8 * http://www.apache.org/licenses/LICENSE-2.0
      9 *
     10 * Unless required by applicable law or agreed to in writing, software
     11 * distributed under the License is distributed on an "AS IS" BASIS,
     12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 * See the License for the specific language governing permissions and
     14 * limitations under the License.
     15 */
     16 #include "GLEScmUtils.h"
     17 
     18 
     19 size_t glParamSize(GLenum param)
     20 {
     21     size_t s = 0;
     22 
     23     switch(param)
     24     {
     25     case GL_MAX_TEXTURE_SIZE:
     26     //case GL_TEXTURE_GEN_MODE_OES:
     27     case GL_TEXTURE_ENV_MODE:
     28     case GL_FOG_MODE:
     29     case GL_FOG_DENSITY:
     30     case GL_FOG_START:
     31     case GL_FOG_END:
     32     case GL_SPOT_EXPONENT:
     33     case GL_CONSTANT_ATTENUATION:
     34     case GL_LINEAR_ATTENUATION:
     35     case GL_QUADRATIC_ATTENUATION:
     36     case GL_SHININESS:
     37     case GL_LIGHT_MODEL_TWO_SIDE:
     38     case GL_POINT_SIZE:
     39     case GL_POINT_SIZE_MIN:
     40     case GL_POINT_SIZE_MAX:
     41     case GL_POINT_FADE_THRESHOLD_SIZE:
     42     case GL_CULL_FACE_MODE:
     43     case GL_FRONT_FACE:
     44     case GL_SHADE_MODEL:
     45     case GL_DEPTH_WRITEMASK:
     46     case GL_DEPTH_CLEAR_VALUE:
     47     case GL_STENCIL_FAIL:
     48     case GL_STENCIL_PASS_DEPTH_FAIL:
     49     case GL_STENCIL_PASS_DEPTH_PASS:
     50     case GL_STENCIL_REF:
     51     case GL_STENCIL_WRITEMASK:
     52     case GL_MATRIX_MODE:
     53     case GL_MODELVIEW_STACK_DEPTH:
     54     case GL_PROJECTION_STACK_DEPTH:
     55     case GL_TEXTURE_STACK_DEPTH:
     56     case GL_ALPHA_TEST_FUNC:
     57     case GL_ALPHA_TEST_REF:
     58     case GL_BLEND_DST:
     59     case GL_BLEND_SRC:
     60     case GL_LOGIC_OP_MODE:
     61     case GL_SCISSOR_TEST:
     62     case GL_MAX_TEXTURE_UNITS:
     63         s = 1;
     64         break;
     65     case GL_ALIASED_LINE_WIDTH_RANGE:
     66     case GL_ALIASED_POINT_SIZE_RANGE:
     67     case GL_DEPTH_RANGE:
     68     case GL_MAX_VIEWPORT_DIMS:
     69     case GL_SMOOTH_POINT_SIZE_RANGE:
     70     case GL_SMOOTH_LINE_WIDTH_RANGE:
     71         s= 2;
     72         break;
     73     case GL_SPOT_DIRECTION:
     74     case GL_POINT_DISTANCE_ATTENUATION:
     75     case GL_CURRENT_NORMAL:
     76         s =  3;
     77         break;
     78     case GL_CURRENT_TEXTURE_COORDS:
     79     case GL_CURRENT_COLOR:
     80     case GL_FOG_COLOR:
     81     case GL_AMBIENT:
     82     case GL_DIFFUSE:
     83     case GL_SPECULAR:
     84     case GL_EMISSION:
     85     case GL_POSITION:
     86     case GL_LIGHT_MODEL_AMBIENT:
     87     case GL_TEXTURE_ENV_COLOR:
     88     case GL_SCISSOR_BOX:
     89     case GL_VIEWPORT:
     90     //case GL_TEXTURE_CROP_RECT_OES:
     91         s =  4;
     92         break;
     93     case GL_MODELVIEW_MATRIX:
     94     case GL_PROJECTION_MATRIX:
     95     case GL_TEXTURE_MATRIX:
     96         s = 16;
     97     default:
     98         s = 1; // assume 1
     99     }
    100     return s;
    101 }
    102