diff options
Diffstat (limited to 'src/mesa/es/main/specials_es2.c')
| -rw-r--r-- | src/mesa/es/main/specials_es2.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/mesa/es/main/specials_es2.c b/src/mesa/es/main/specials_es2.c new file mode 100644 index 0000000000..791f178361 --- /dev/null +++ b/src/mesa/es/main/specials_es2.c @@ -0,0 +1,173 @@ +/************************************************************************** + * + * 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; + + /* Core additions */ + len += append_extension(&str, "GL_OES_single_precision"); + + /* Required extensions */ + len += append_extension(&str, "GL_OES_compressed_paletted_texture"); + + if (ctx->Extensions.ARB_framebuffer_object) { + len += append_extension(&str, "GL_OES_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"); + len += append_extension(&str, "GL_OES_stencil8"); + } + + 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"); + + 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 */ +} |