/* * Cogl * * A Low Level GPU Graphics and Utilities API * * Copyright (C) 2007,2008,2009 Intel Corporation. * * 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 THE AUTHORS OR COPYRIGHT HOLDERS * 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. * * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "cogl-context-private.h" #include "cogl-util-gl-private.h" #include "cogl-feature-private.h" #include "cogl-renderer-private.h" #include "cogl-private.h" #include "cogl-framebuffer-gl-private.h" #include "cogl-texture-2d-gl-private.h" #include "cogl-attribute-gl-private.h" #include "cogl-clip-stack-gl-private.h" #include "cogl-buffer-gl-private.h" #ifndef GL_UNSIGNED_INT_24_8 #define GL_UNSIGNED_INT_24_8 0x84FA #endif #ifndef GL_DEPTH_STENCIL #define GL_DEPTH_STENCIL 0x84F9 #endif #ifndef GL_RG #define GL_RG 0x8227 #endif #ifndef GL_RG8 #define GL_RG8 0x822B #endif static CoglBool _cogl_driver_pixel_format_from_gl_internal (CoglContext *context, GLenum gl_int_format, CoglPixelFormat *out_format) { return TRUE; } static CoglPixelFormat _cogl_driver_pixel_format_to_gl (CoglContext *context, CoglPixelFormat format, GLenum *out_glintformat, GLenum *out_glformat, GLenum *out_gltype) { CoglPixelFormat required_format; GLenum glintformat; GLenum glformat = 0; GLenum gltype; required_format = format; /* Find GL equivalents */ switch (format) { case COGL_PIXEL_FORMAT_A_8: glintformat = GL_ALPHA; glformat = GL_ALPHA; gltype = GL_UNSIGNED_BYTE; break; case COGL_PIXEL_FORMAT_G_8: glintformat = GL_LUMINANCE; glformat = GL_LUMINANCE; gltype = GL_UNSIGNED_BYTE; break; case COGL_PIXEL_FORMAT_RG_88: if (cogl_has_feature (context, COGL_FEATURE_ID_TEXTURE_RG)) { glintformat = GL_RG8; glformat = GL_RG; } else { /* If red-green textures aren't supported then we'll use RGB * as an internal format. Note this should only end up * mattering for downloading the data because Cogl will * refuse to allocate a texture with RG components if RG * textures aren't supported */ glintformat = GL_RGB; glformat = GL_RGB; required_format = COGL_PIXEL_FORMAT_RGB_888; } gltype = GL_UNSIGNED_BYTE; break; case COGL_PIXEL_FORMAT_BGRA_8888: case COGL_PIXEL_FORMAT_BGRA_8888_PRE: /* There is an extension to support this format */ if (_cogl_has_private_feature (context, COGL_PRIVATE_FEATURE_TEXTURE_FORMAT_BGRA8888)) { /* For some reason the extension says you have to specify BGRA for the internal format too */ glintformat = GL_BGRA_EXT; glformat = GL_BGRA_EXT; gltype = GL_UNSIGNED_BYTE; required_format = format; break; } /* flow through */ /* Just one 24-bit ordering supported */ case COGL_PIXEL_FORMAT_RGB_888: case COGL_PIXEL_FORMAT_BGR_888: glintformat = GL_RGB; glformat = GL_RGB; gltype = GL_UNSIGNED_BYTE; required_format = COGL_PIXEL_FORMAT_RGB_888; break; /* Just one 32-bit ordering supported */ case COGL_PIXEL_FORMAT_RGBA_8888: case COGL_PIXEL_FORMAT_RGBA_8888_PRE: case COGL_PIXEL_FORMAT_ARGB_8888: case COGL_PIXEL_FORMAT_ARGB_8888_PRE: case COGL_PIXEL_FORMAT_ABGR_8888: case COGL_PIXEL_FORMAT_ABGR_8888_PRE: case COGL_PIXEL_FORMAT_RGBA_1010102: case COGL_PIXEL_FORMAT_RGBA_1010102_PRE: case COGL_PIXEL_FORMAT_BGRA_1010102: case COGL_PIXEL_FORMAT_BGRA_1010102_PRE: case COGL_PIXEL_FORMAT_ABGR_2101010: case COGL_PIXEL_FORMAT_ABGR_2101010_PRE: case COGL_PIXEL_FORMAT_ARGB_2101010: case COGL_PIXEL_FORMAT_ARGB_2101010_PRE: glintformat = GL_RGBA; glformat = GL_RGBA; gltype = GL_UNSIGNED_BYTE; required_format = COGL_PIXEL_FORMAT_RGBA_8888; required_format |= (format & COGL_PREMULT_BIT); break; /* The following three types of channel ordering * are always defined using system word byte * ordering (even according to GLES spec) */ case COGL_PIXEL_FORMAT_RGB_565: glintformat = GL_RGB; glformat = GL_RGB; gltype = GL_UNSIGNED_SHORT_5_6_5; break; case COGL_PIXEL_FORMAT_RGBA_4444: case COGL_PIXEL_FORMAT_RGBA_4444_PRE: glintformat = GL_RGBA; glformat = GL_RGBA; gltype = GL_UNSIGNED_SHORT_4_4_4_4; break; case COGL_PIXEL_FORMAT_RGBA_5551: case COGL_PIXEL_FORMAT_RGBA_5551_PRE: glintformat = GL_RGBA; glformat = GL_RGBA; gltype = GL_UNSIGNED_SHORT_5_5_5_1; break; case COGL_PIXEL_FORMAT_DEPTH_16: glintformat = GL_DEPTH_COMPONENT; glformat = GL_DEPTH_COMPONENT; gltype = GL_UNSIGNED_SHORT; break; case COGL_PIXEL_FORMAT_DEPTH_32: glintformat = GL_DEPTH_COMPONENT; glformat = GL_DEPTH_COMPONENT; gltype = GL_UNSIGNED_INT; break; case COGL_PIXEL_FORMAT_DEPTH_24_STENCIL_8: glintformat = GL_DEPTH_STENCIL; glformat = GL_DEPTH_STENCIL; gltype = GL_UNSIGNED_INT_24_8; break; case COGL_PIXEL_FORMAT_ANY: case COGL_PIXEL_FORMAT_YUV: g_assert_not_reached (); break; } /* All of the pixel formats are handled above so if this hits then we've been given an invalid pixel format */ g_assert (glformat != 0); if (out_glintformat != NULL) *out_glintformat = glintformat; if (out_glformat != NULL) *out_glformat = glformat; if (out_gltype != NULL) *out_gltype = gltype; return required_format; } static CoglBool _cogl_get_gl_version (CoglContext *ctx, int *major_out, int *minor_out) { const char *version_string; /* Get the OpenGL version number */ if ((version_string = _cogl_context_get_gl_version (ctx)) == NULL) return FALSE; if (!g_str_has_prefix (version_string, "OpenGL ES ")) return FALSE; return _cogl_gl_util_parse_gl_version (version_string + 10, major_out, minor_out); } static CoglBool _cogl_driver_update_features (CoglContext *context, CoglError **error) { unsigned long private_features [COGL_FLAGS_N_LONGS_FOR_SIZE (COGL_N_PRIVATE_FEATURES)] = { 0 }; CoglFeatureFlags flags = 0; char **gl_extensions; int gl_major, gl_minor; int i; /* We have to special case getting the pointer to the glGetString function because we need to use it to determine what functions we can expect */ context->glGetString = (void *) _cogl_renderer_get_proc_address (context->display->renderer, "glGetString", TRUE); gl_extensions = _cogl_context_get_gl_extensions (context); if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_WINSYS))) { char *all_extensions = g_strjoinv (" ", gl_extensions); COGL_NOTE (WINSYS, "Checking features\n" " GL_VENDOR: %s\n" " GL_RENDERER: %s\n" " GL_VERSION: %s\n" " GL_EXTENSIONS: %s", context->glGetString (GL_VENDOR), context->glGetString (GL_RENDERER), _cogl_context_get_gl_version (context), all_extensions); g_free (all_extensions); } context->glsl_major = 1; context->glsl_minor = 0; context->glsl_version_to_use = 100; _cogl_gpu_info_init (context, &context->gpu); if (!_cogl_get_gl_version (context, &gl_major, &gl_minor)) { gl_major = 1; gl_minor = 1; } _cogl_feature_check_ext_functions (context, gl_major, gl_minor, gl_extensions); #ifdef HAVE_COGL_GLES if (context->driver == COGL_DRIVER_GLES1) { int max_clip_planes; GE( context, glGetIntegerv (GL_MAX_CLIP_PLANES, &max_clip_planes) ); if (max_clip_planes >= 4) COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_FOUR_CLIP_PLANES, TRUE); } #endif if (context->driver == COGL_DRIVER_GLES2) { flags |= COGL_FEATURE_SHADERS_GLSL | COGL_FEATURE_OFFSCREEN; /* Note GLES 2 core doesn't support mipmaps for npot textures or * repeat modes other than CLAMP_TO_EDGE. */ flags |= COGL_FEATURE_TEXTURE_NPOT_BASIC; flags |= COGL_FEATURE_DEPTH_RANGE; COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_GLSL, TRUE); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_OFFSCREEN, TRUE); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_DEPTH_RANGE, TRUE); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_MIRRORED_REPEAT, TRUE); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_PER_VERTEX_POINT_SIZE, TRUE); COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_BLEND_CONSTANT, TRUE); } else if (context->driver == COGL_DRIVER_GLES1) { COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_GL_FIXED, TRUE); COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_ALPHA_TEST, TRUE); COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_BUILTIN_POINT_SIZE_UNIFORM, TRUE); } COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_VBOS, TRUE); COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_ANY_GL, TRUE); COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_ALPHA_TEXTURES, TRUE); /* Both GLES 1.1 and GLES 2.0 support point sprites in core */ flags |= COGL_FEATURE_POINT_SPRITE; COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_POINT_SPRITE, TRUE); if (context->glGenRenderbuffers) { flags |= COGL_FEATURE_OFFSCREEN; COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_OFFSCREEN, TRUE); } if (context->glBlitFramebuffer) COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_OFFSCREEN_BLIT, TRUE); if (_cogl_check_extension ("GL_OES_element_index_uint", gl_extensions)) { flags |= COGL_FEATURE_UNSIGNED_INT_INDICES; COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_UNSIGNED_INT_INDICES, TRUE); } if (_cogl_check_extension ("GL_OES_depth_texture", gl_extensions)) { flags |= COGL_FEATURE_DEPTH_TEXTURE; COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_DEPTH_TEXTURE, TRUE); } if (_cogl_check_extension ("GL_OES_texture_npot", gl_extensions)) { flags |= (COGL_FEATURE_TEXTURE_NPOT | COGL_FEATURE_TEXTURE_NPOT_BASIC | COGL_FEATURE_TEXTURE_NPOT_MIPMAP | COGL_FEATURE_TEXTURE_NPOT_REPEAT); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_NPOT, TRUE); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_NPOT_REPEAT, TRUE); } else if (_cogl_check_extension ("GL_IMG_texture_npot", gl_extensions)) { flags |= (COGL_FEATURE_TEXTURE_NPOT_BASIC | COGL_FEATURE_TEXTURE_NPOT_MIPMAP); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_NPOT_BASIC, TRUE); COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_NPOT_MIPMAP, TRUE); } if (context->glTexImage3D) { flags |= COGL_FEATURE_TEXTURE_3D; COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_3D, TRUE); } if (context->glMapBuffer) { /* The GL_OES_mapbuffer extension doesn't support mapping for read */ flags |= COGL_FEATURE_MAP_BUFFER_FOR_WRITE; COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_MAP_BUFFER_FOR_WRITE, TRUE); } if (context->glEGLImageTargetTexture2D) COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_TEXTURE_2D_FROM_EGL_IMAGE, TRUE); if (_cogl_check_extension ("GL_OES_packed_depth_stencil", gl_extensions)) COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_OES_PACKED_DEPTH_STENCIL, TRUE); if (_cogl_check_extension ("GL_EXT_texture_format_BGRA8888", gl_extensions)) COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_TEXTURE_FORMAT_BGRA8888, TRUE); if (_cogl_check_extension ("GL_EXT_unpack_subimage", gl_extensions)) COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_UNPACK_SUBIMAGE, TRUE); /* A nameless vendor implemented the extension, but got the case wrong * per the spec. */ if (_cogl_check_extension ("GL_OES_EGL_sync", gl_extensions) || _cogl_check_extension ("GL_OES_egl_sync", gl_extensions)) COGL_FLAGS_SET (private_features, COGL_PRIVATE_FEATURE_OES_EGL_SYNC, TRUE); if (_cogl_check_extension ("GL_EXT_texture_rg", gl_extensions)) COGL_FLAGS_SET (context->features, COGL_FEATURE_ID_TEXTURE_RG, TRUE); /* Cache features */ for (i = 0; i < G_N_ELEMENTS (private_features); i++) context->private_features[i] |= private_features[i]; context->feature_flags |= flags; g_strfreev (gl_extensions); return TRUE; } const CoglDriverVtable _cogl_driver_gles = { _cogl_driver_pixel_format_from_gl_internal, _cogl_driver_pixel_format_to_gl, _cogl_driver_update_features, _cogl_offscreen_gl_allocate, _cogl_offscreen_gl_free, _cogl_framebuffer_gl_flush_state, _cogl_framebuffer_gl_clear, _cogl_framebuffer_gl_query_bits, _cogl_framebuffer_gl_finish, _cogl_framebuffer_gl_discard_buffers, _cogl_framebuffer_gl_draw_attributes, _cogl_framebuffer_gl_draw_indexed_attributes, _cogl_framebuffer_gl_read_pixels_into_bitmap, _cogl_texture_2d_gl_free, _cogl_texture_2d_gl_can_create, _cogl_texture_2d_gl_init, _cogl_texture_2d_gl_allocate, _cogl_texture_2d_gl_copy_from_framebuffer, _cogl_texture_2d_gl_get_gl_handle, _cogl_texture_2d_gl_generate_mipmap, _cogl_texture_2d_gl_copy_from_bitmap, NULL, /* texture_2d_get_data */ _cogl_gl_flush_attributes_state, _cogl_clip_stack_gl_flush, _cogl_buffer_gl_create, _cogl_buffer_gl_destroy, _cogl_buffer_gl_map_range, _cogl_buffer_gl_unmap, _cogl_buffer_gl_set_data, };