/*
* Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
package com.sun.jsr239;
import javax.microedition.khronos.opengles.GL11;
import javax.microedition.khronos.opengles.GL11Ext;
import javax.microedition.khronos.opengles.GL11ExtensionPack;
import com.sun.midp.main.Configuration;
/**
* A class containing constants that describe the OpenGL ES version
* supported by the runtime platform and the set of supported
* extensions. This class also contains methods that return the
* number of values that will be returned by various 'getters' as well
* as tunable implementation parameters.
*/
public final class GLConfiguration {
/**
* If true, each GL command will be submitted to the native OpenGL
* ES engine immediately.
*/
public static boolean flushQueueAfterEachCommand = false;
/**
* If true, the underlying VM uses a single native thread for all
* Java threads, false if the VM uses a 1-1 mapping of Java
* threads to native thread. If the VM uses some other sort of
* mapping, this implementation is not guaranteed to work.
*
* The value should be 'true' for Sun's CLDC implementations,
* and 'false' for Sun's CDC implementation.
*/
public static final boolean singleThreaded = true;
/**
* True if the platform requires the bytes returned by
* <code>Float.floatToIntBits</code> to be swapped prior to
* placement on the command queue.
*/
public static final boolean SWAP_FLOAT_BYTES = false;
/**
* True on big-endian platforms.
*/
public static boolean IS_BIG_ENDIAN = false;
/**
* The maximum number of commands and arguments that will be
* enqueued prior to submittal to the native OpenGL ES engine.
*/
public static final int COMMAND_QUEUE_SIZE = 4096;
/**
* True if the native OpenGL ES engine supports EGL 1.1
*/
public static boolean supportsEGL11 = true;
/**
* True if the native OpenGL ES engine supports OpenGL ES 1.1
*/
public static boolean supportsGL11 = true;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_query_matrix</code> extension.
*/
public static boolean supports_OES_query_matrix = true;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_query_matrix</code> extension.
*/
public static boolean supports_OES_draw_texture = true;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_query_matrix</code> extension.
*/
public static boolean supports_OES_matrix_palette = true;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_texture_cube_map</code> extension.
*/
public static boolean supports_OES_texture_cube_map = false;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_texture_env_crossbar</code> extension.
*/
public static boolean supports_OES_texture_env_crossbar = false;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_texture_mirrored_repeate</code> extension.
*/
public static boolean supports_OES_texture_mirrored_repeat = false;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_blend_subtract</code> extension.
*/
public static boolean supports_OES_blend_subtract = false;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_blend_func_separate</code> extension.
*/
public static boolean supports_OES_blend_func_separate = false;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_blend_equation_separate</code> extension.
*/
public static boolean supports_OES_blend_equation_separate = false;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_stencil_wrap</code> extension.
*/
public static boolean supports_OES_stencil_wrap = false;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_extended_matrix_palette</code> extension.
*/
public static boolean supports_OES_extended_matrix_palette = false;
/**
* True if the native OpenGL ES engine supports
* the <code>OES_framebuffer_object</code> extension.
*/
public static boolean supports_OES_framebuffer_object = false;
/**
* The number of compressed texture formats, as returned by
* 'glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS)'
*/
public static final int NUM_COMPRESSED_TEXTURE_FORMATS = 10;
/**
* The value of GL_MAX_VERTEX_UNITS_OES.
*/
public static final int MAX_VERTEX_UNITS = 4;
private static boolean getBooleanProp(String p, boolean defaultVal) {
String propString = Configuration.getProperty(p);
boolean returnVal = defaultVal;
if (propString != null) {
if (propString.equals("true") ||
propString.equals("t") ||
propString.equals("True") ||
propString.equals("T") ||
propString.equals("1"))
{
returnVal = true;
} else if (propString.equals("false") ||
propString.equals("f") ||
propString.equals("False") ||
propString.equals("F") ||
propString.equals("0"))
{
returnVal = false;
}
}
return returnVal;
}
static {
flushQueueAfterEachCommand = getBooleanProp("jsr239.noqueue", false);
supportsEGL11 = getBooleanProp("jsr239.supportsEGL11", true);
supportsGL11 = getBooleanProp("jsr239.supportsGL11", true);
supports_OES_query_matrix =
getBooleanProp("jsr239.supports_OES_query_matrix", true);
supports_OES_draw_texture =
getBooleanProp("jsr239.supports_OES_draw_texture", true);
supports_OES_matrix_palette =
getBooleanProp("jsr239.supports_OES_matrix_palette", true);
supports_OES_texture_cube_map =
getBooleanProp("jsr239.supports_OES_texture_cube_map", false);
supports_OES_texture_env_crossbar =
getBooleanProp("jsr239.supports_OES_texture_env_crossbar", false);
supports_OES_texture_mirrored_repeat =
getBooleanProp("jsr239.supports_OES_texture_mirrored_repeat",
false);
supports_OES_blend_subtract =
getBooleanProp("jsr239.supports_OES_blend_subtract", false);
supports_OES_blend_func_separate =
getBooleanProp("jsr239.supports_OES_blend_func_separate", false);
supports_OES_blend_equation_separate =
getBooleanProp("jsr239.supports_OES_blend_equation_separate",
false);
supports_OES_stencil_wrap =
getBooleanProp("jsr239.supports_OES_stencil_wrap", false);
supports_OES_extended_matrix_palette =
getBooleanProp("jsr239.supports_OES_extended_matrix_palette",
false);
supports_OES_framebuffer_object =
getBooleanProp("jsr239.supports_OES_framebuffer_object", false);
}
/**
* Returns the number of values required by the given
* parameter <code>pname</code> by <code>glFog*v</code>.
*/
public static int glFogNumParams(int pname) {
return (pname == GL11.GL_FOG_COLOR) ? 4 : 1;
}
/**
* Returns the number of values required by the given
* parameter <code>pname</code> by <code>glGetFixedv</code>,
* <code>glGetFloatv</code>, and <code>glGetIntegerv</code>.
*/
public static int glGetNumParams(int pname) {
switch (pname) {
case GL11.GL_ALPHA_BITS:
case GL11.GL_ALPHA_TEST_FUNC:
case GL11.GL_ALPHA_TEST_REF:
case GL11.GL_BLEND_DST:
case GL11ExtensionPack.GL_BLEND_DST_ALPHA:
case GL11ExtensionPack.GL_BLEND_DST_RGB:
case GL11ExtensionPack.GL_BLEND_EQUATION:
/* synonym: GL11ExtensionPack.GL_BLEND_EQUATION_RGB */
case GL11ExtensionPack.GL_BLEND_EQUATION_ALPHA:
case GL11.GL_BLEND_SRC:
case GL11ExtensionPack.GL_BLEND_SRC_ALPHA:
case GL11ExtensionPack.GL_BLEND_SRC_RGB:
case GL11.GL_BLUE_BITS:
case GL11.GL_COLOR_ARRAY_BUFFER_BINDING:
case GL11.GL_COLOR_ARRAY_SIZE:
case GL11.GL_COLOR_ARRAY_STRIDE:
case GL11.GL_COLOR_ARRAY_TYPE:
case GL11ExtensionPack.GL_MAX_CUBE_MAP_TEXTURE_SIZE:
case GL11.GL_CULL_FACE:
case GL11.GL_DEPTH_BITS:
case GL11.GL_DEPTH_CLEAR_VALUE:
case GL11.GL_DEPTH_FUNC:
case GL11.GL_DEPTH_WRITEMASK:
case GL11.GL_FOG_DENSITY:
case GL11.GL_FOG_END:
case GL11.GL_FOG_HINT:
case GL11.GL_FOG_MODE:
case GL11.GL_FOG_START:
case GL11.GL_FRONT_FACE:
case GL11.GL_GREEN_BITS:
case GL11.GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
case GL11.GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
case GL11.GL_LIGHT_MODEL_TWO_SIDE:
case GL11.GL_LINE_SMOOTH_HINT:
case GL11.GL_LINE_WIDTH:
case GL11.GL_LOGIC_OP_MODE:
case GL11Ext.GL_MATRIX_INDEX_ARRAY_BUFFER_BINDING_OES:
case GL11Ext.GL_MATRIX_INDEX_ARRAY_SIZE_OES:
case GL11Ext.GL_MATRIX_INDEX_ARRAY_STRIDE_OES:
case GL11.GL_MATRIX_MODE:
case GL11.GL_MAX_CLIP_PLANES:
case GL11.GL_MAX_ELEMENTS_INDICES:
case GL11.GL_MAX_ELEMENTS_VERTICES:
case GL11.GL_MAX_LIGHTS:
case GL11.GL_MAX_MODELVIEW_STACK_DEPTH:
case GL11Ext.GL_MAX_PALETTE_MATRICES_OES:
case GL11.GL_MAX_PROJECTION_STACK_DEPTH:
case GL11.GL_MAX_TEXTURE_SIZE:
case GL11.GL_MAX_TEXTURE_STACK_DEPTH:
case GL11.GL_MAX_TEXTURE_UNITS:
case GL11Ext.GL_MAX_VERTEX_UNITS_OES:
case GL11.GL_MODELVIEW_STACK_DEPTH:
case GL11.GL_NORMAL_ARRAY_BUFFER_BINDING:
case GL11.GL_NORMAL_ARRAY_STRIDE:
case GL11.GL_NORMAL_ARRAY_TYPE:
case GL11.GL_NUM_COMPRESSED_TEXTURE_FORMATS:
case GL11.GL_PACK_ALIGNMENT:
case GL11.GL_PERSPECTIVE_CORRECTION_HINT:
case GL11.GL_POINT_SIZE:
case GL11.GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
case GL11.GL_POINT_SIZE_ARRAY_STRIDE_OES:
case GL11.GL_POINT_SIZE_ARRAY_TYPE_OES:
case GL11.GL_POINT_SMOOTH_HINT:
case GL11.GL_POLYGON_OFFSET_FACTOR:
case GL11.GL_POLYGON_OFFSET_UNITS:
case GL11.GL_PROJECTION_STACK_DEPTH:
case GL11.GL_RED_BITS:
case GL11.GL_SHADE_MODEL:
case GL11.GL_STENCIL_BITS:
case GL11.GL_STENCIL_CLEAR_VALUE:
case GL11.GL_STENCIL_FAIL:
case GL11.GL_STENCIL_FUNC:
case GL11.GL_STENCIL_PASS_DEPTH_FAIL:
case GL11.GL_STENCIL_PASS_DEPTH_PASS:
case GL11.GL_STENCIL_REF:
case GL11.GL_STENCIL_VALUE_MASK:
case GL11.GL_STENCIL_WRITEMASK:
case GL11.GL_SUBPIXEL_BITS:
case GL11.GL_TEXTURE_BINDING_2D:
case GL11.GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING:
case GL11.GL_TEXTURE_COORD_ARRAY_SIZE:
case GL11.GL_TEXTURE_COORD_ARRAY_STRIDE:
case GL11.GL_TEXTURE_COORD_ARRAY_TYPE:
case GL11.GL_TEXTURE_STACK_DEPTH:
case GL11.GL_UNPACK_ALIGNMENT:
case GL11.GL_VERTEX_ARRAY_BUFFER_BINDING:
case GL11.GL_VERTEX_ARRAY_SIZE:
case GL11.GL_VERTEX_ARRAY_STRIDE:
case GL11.GL_VERTEX_ARRAY_TYPE:
case GL11Ext.GL_WEIGHT_ARRAY_BUFFER_BINDING_OES:
case GL11Ext.GL_WEIGHT_ARRAY_SIZE_OES:
case GL11Ext.GL_WEIGHT_ARRAY_STRIDE_OES:
case GL11Ext.GL_WEIGHT_ARRAY_TYPE_OES:
return 1;
case GL11.GL_ALIASED_POINT_SIZE_RANGE:
case GL11.GL_ALIASED_LINE_WIDTH_RANGE:
case GL11.GL_DEPTH_RANGE:
case GL11.GL_MAX_VIEWPORT_DIMS:
case GL11.GL_SMOOTH_LINE_WIDTH_RANGE:
case GL11.GL_SMOOTH_POINT_SIZE_RANGE:
return 2;
case GL11.GL_COLOR_CLEAR_VALUE:
case GL11.GL_COLOR_WRITEMASK:
case GL11.GL_FOG_COLOR:
case GL11.GL_LIGHT_MODEL_AMBIENT:
case GL11.GL_SCISSOR_BOX:
case GL11.GL_VIEWPORT:
return 4;
case GL11.GL_COMPRESSED_TEXTURE_FORMATS:
return NUM_COMPRESSED_TEXTURE_FORMATS;
case GL11.GL_MODELVIEW_MATRIX:
case GL11.GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES:
case GL11.GL_PROJECTION_MATRIX:
case GL11.GL_PROJECTION_MATRIX_FLOAT_AS_INT_BITS_OES:
case GL11.GL_TEXTURE_MATRIX:
case GL11.GL_TEXTURE_MATRIX_FLOAT_AS_INT_BITS_OES:
return 16;
default:
System.out.println("GLConfiguration: glGetNumParams called " +
"with pname=" + pname);
return 0;
}
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by <code>glGetBufferParameteriv</code>.
*/
public static int glGetBufferParametervNumParams(int pname) {
return 1;
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by <code>glLight*v</code>.
*/
public static int glLightNumParams(int pname) {
switch (pname) {
case GL11.GL_SPOT_EXPONENT:
case GL11.GL_SPOT_CUTOFF:
case GL11.GL_CONSTANT_ATTENUATION:
case GL11.GL_LINEAR_ATTENUATION:
case GL11.GL_QUADRATIC_ATTENUATION:
return 1;
case GL11.GL_SPOT_DIRECTION:
return 3;
case GL11.GL_POSITION:
case GL11.GL_AMBIENT:
case GL11.GL_DIFFUSE:
case GL11.GL_SPECULAR:
case GL11.GL_EMISSION:
return 4;
default:
System.out.println("GLConfiguration: glLightNumParams called " +
"with pname=" + pname);
return 0;
}
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by <code>glLightModel*v</code>.
*/
public static int glLightModelNumParams(int pname) {
switch (pname) {
case GL11.GL_LIGHT_MODEL_AMBIENT:
return 4;
case GL11.GL_LIGHT_MODEL_TWO_SIDE:
return 1;
default:
System.out.println("GLConfiguration: glLightModelNumParams " +
"called with pname=" + pname);
return 0;
}
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by <code>glMaterial*v</code>.
*/
public static int glMaterialNumParams(int pname) {
switch (pname) {
case GL11.GL_AMBIENT:
case GL11.GL_DIFFUSE:
case GL11.GL_SPECULAR:
case GL11.GL_EMISSION:
return 4;
case GL11.GL_SHININESS:
return 1;
default:
System.out.println("GLConfiguration: glMaterialNumParams " +
"called with pname=" + pname);
return 0;
}
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by <code>glPointParameter*v</code>.
*/
public static int glPointParameterNumParams(int pname) {
return (pname == GL11.GL_POINT_DISTANCE_ATTENUATION) ? 3 : 1;
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by <code>glTexEnv*v</code>.
*/
public static int glTexEnvNumParams(int pname) {
switch (pname) {
case GL11.GL_TEXTURE_ENV_MODE:
case GL11.GL_COMBINE_RGB:
case GL11.GL_COMBINE_ALPHA:
case GL11.GL_COORD_REPLACE_OES:
return 1;
case GL11.GL_TEXTURE_ENV_COLOR:
return 4;
default:
System.out.println("GLConfiguration: glTexEnvNumParams called " +
"with pname=" + pname);
return 0;
}
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by <code>glTexGen*v</code>.
*/
public static int glTexGenNumParams(int pname) {
return 1;
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by <code>glTexParameter*v</code>.
*/
public static int glTexParameterNumParams(int pname) {
switch (pname) {
case GL11.GL_TEXTURE_MIN_FILTER:
case GL11.GL_TEXTURE_MAG_FILTER:
case GL11.GL_TEXTURE_WRAP_S:
case GL11.GL_TEXTURE_WRAP_T:
case GL11.GL_GENERATE_MIPMAP:
return 1;
case GL11Ext.GL_TEXTURE_CROP_RECT_OES:
return 4;
default:
System.out.println("GLConfiguration: glTexParameterNumParams " +
"called with pname=" + pname);
return 0;
}
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by <code>glRenderbufferParameterivOES</code>
* and <code>glGetRenderbufferParameterivOES</code>.
*/
public static int glRenderbufferParameterNumParams(int pname) {
return 1;
}
/**
* Returns the number of values required by the given parameter
* <code>pname</code> by
* <code>glFramebufferAttachmentParameterivOES</code> and
* <code>glGetFramebufferAttachmentParameterivOES</code>.
*/
public static int glFramebufferAttachmentParameterNumParams(int pname) {
return 1;
}
/**
* Returns the number of bytes associated with a given GL data type.
*/
public static int sizeOfType(int type) {
switch (type) {
case GL11.GL_BYTE: case GL11.GL_UNSIGNED_BYTE:
return 1;
case GL11.GL_SHORT:
case GL11.GL_UNSIGNED_SHORT_4_4_4_4:
case GL11.GL_UNSIGNED_SHORT_5_5_5_1:
case GL11.GL_UNSIGNED_SHORT_5_6_5:
return 2;
case GL11.GL_FIXED:
case GL11.GL_FLOAT:
return 4;
}
throw new IllegalArgumentException("Unknown type: " + type);
}
/**
* Returns the number of channels associated with a given
* GL pixel format.
*/
public static int formatChannels(int format) {
switch (format) {
case GL11.GL_LUMINANCE:
case GL11.GL_ALPHA:
return 1;
case GL11.GL_LUMINANCE_ALPHA:
return 2;
case GL11.GL_RGB:
return 3;
case GL11.GL_RGBA:
return 4;
}
throw new IllegalArgumentException("Unknown format: " + format);
}
}
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