| /************************************************************************** |
| * |
| * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * TUNGSTEN GRAPHICS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| **************************************************************************/ |
| |
| |
| #include "main/mtypes.h" |
| #include "main/context.h" |
| #include "main/imports.h" |
| #include "main/get.h" |
| |
| |
| const GLubyte * GLAPIENTRY _es_GetString(GLenum name); |
| |
| |
| static const GLubyte * |
| compute_es_version(void) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| static const char es_2_0[] = "OpenGL ES 2.0"; |
| /* OpenGL ES 2.0 is derived from OpenGL 2.0 */ |
| const GLboolean ver_2_0 = (ctx->Extensions.ARB_multisample && |
| ctx->Extensions.ARB_multitexture && |
| ctx->Extensions.ARB_texture_compression && |
| ctx->Extensions.ARB_texture_cube_map && |
| ctx->Extensions.ARB_texture_mirrored_repeat && |
| ctx->Extensions.EXT_blend_color && |
| ctx->Extensions.EXT_blend_func_separate && |
| ctx->Extensions.EXT_blend_minmax && |
| ctx->Extensions.EXT_blend_subtract && |
| ctx->Extensions.EXT_stencil_wrap && |
| ctx->Extensions.ARB_vertex_buffer_object && |
| ctx->Extensions.ARB_shader_objects && |
| ctx->Extensions.ARB_vertex_shader && |
| ctx->Extensions.ARB_fragment_shader && |
| ctx->Extensions.ARB_texture_non_power_of_two && |
| ctx->Extensions.EXT_blend_equation_separate); |
| if (!ver_2_0) |
| _mesa_problem(ctx, "Incomplete OpenGL ES 2.0 support."); |
| return (const GLubyte *) es_2_0; |
| } |
| |
| |
| static size_t |
| append_extension(char **str, const char *ext) |
| { |
| char *s = *str; |
| size_t len = strlen(ext); |
| |
| if (s) { |
| memcpy(s, ext, len); |
| s[len++] = ' '; |
| s[len] = '\0'; |
| |
| *str += len; |
| } |
| else { |
| len++; |
| } |
| |
| return len; |
| } |
| |
| |
| static size_t |
| make_extension_string(const GLcontext *ctx, char *str) |
| { |
| size_t len = 0; |
| |
| len += append_extension(&str, "GL_OES_compressed_paletted_texture"); |
| |
| if (ctx->Extensions.ARB_framebuffer_object) { |
| len += append_extension(&str, "GL_OES_depth24"); |
| len += append_extension(&str, "GL_OES_depth32"); |
| len += append_extension(&str, "GL_OES_fbo_render_mipmap"); |
| len += append_extension(&str, "GL_OES_rgb8_rgba8"); |
| len += append_extension(&str, "GL_OES_stencil1"); |
| len += append_extension(&str, "GL_OES_stencil4"); |
| } |
| |
| if (ctx->Extensions.EXT_vertex_array) |
| len += append_extension(&str, "GL_OES_element_index_uint"); |
| if (ctx->Extensions.ARB_vertex_buffer_object) |
| len += append_extension(&str, "GL_OES_mapbuffer"); |
| |
| if (ctx->Extensions.EXT_texture3D) |
| len += append_extension(&str, "GL_OES_texture_3D"); |
| if (ctx->Extensions.ARB_texture_non_power_of_two) |
| len += append_extension(&str, "GL_OES_texture_npot"); |
| if (ctx->Extensions.EXT_texture_filter_anisotropic) |
| len += append_extension(&str, "GL_EXT_texture_filter_anisotropic"); |
| |
| len += append_extension(&str, "GL_EXT_texture_type_2_10_10_10_REV"); |
| if (ctx->Extensions.ARB_depth_texture) |
| len += append_extension(&str, "GL_OES_depth_texture"); |
| if (ctx->Extensions.EXT_packed_depth_stencil) |
| len += append_extension(&str, "GL_OES_packed_depth_stencil"); |
| if (ctx->Extensions.ARB_fragment_shader) |
| len += append_extension(&str, "GL_OES_standard_derivatives"); |
| |
| if (ctx->Extensions.EXT_texture_compression_s3tc) |
| len += append_extension(&str, "GL_EXT_texture_compression_dxt1"); |
| if (ctx->Extensions.EXT_blend_minmax) |
| len += append_extension(&str, "GL_EXT_blend_minmax"); |
| if (ctx->Extensions.EXT_multi_draw_arrays) |
| len += append_extension(&str, "GL_EXT_multi_draw_arrays"); |
| |
| return len; |
| } |
| |
| |
| static const GLubyte * |
| compute_es_extensions(void) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| |
| if (!ctx->Extensions.String) { |
| char *s; |
| unsigned int len; |
| |
| len = make_extension_string(ctx, NULL); |
| s = (char *) _mesa_malloc(len + 1); |
| if (!s) |
| return NULL; |
| make_extension_string(ctx, s); |
| ctx->Extensions.String = (const GLubyte *) s; |
| } |
| |
| return ctx->Extensions.String; |
| } |
| |
| const GLubyte * GLAPIENTRY |
| _es_GetString(GLenum name) |
| { |
| switch (name) { |
| case GL_VERSION: |
| return compute_es_version(); |
| case GL_SHADING_LANGUAGE_VERSION: |
| return (const GLubyte *) "OpenGL ES GLSL ES 1.0.16"; |
| case GL_EXTENSIONS: |
| return compute_es_extensions(); |
| default: |
| return _mesa_GetString(name); |
| } |
| } |
| |
| |
| void |
| _mesa_initialize_context_extra(GLcontext *ctx) |
| { |
| ctx->FragmentProgram._MaintainTexEnvProgram = GL_TRUE; |
| ctx->VertexProgram._MaintainTnlProgram = GL_TRUE; |
| |
| ctx->Point.PointSprite = GL_TRUE; /* always on for ES 2.x */ |
| } |