/* * (C) Copyright IBM Corporation 2002, 2004 * 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 * on the rights to use, copy, modify, merge, publish, distribute, sub * license, 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 (including the next * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS AND/OR THEIR SUPPLIERS 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. */ /** * \file dri_util.c * DRI utility functions. * * This module acts as glue between GLX and the actual hardware driver. A DRI * driver doesn't really \e have to use any of this - it's optional. But, some * useful stuff is done here that otherwise would have to be duplicated in most * drivers. * * Basically, these utility functions take care of some of the dirty details of * screen initialization, context creation, context binding, DRM setup, etc. * * These functions are compiled into each DRI driver so libGL.so knows nothing * about them. */ #include #include "dri_util.h" #include "dri_context.h" #include "dri_screen.h" #include "dri_drawable.h" #include "util/u_endian.h" #include "util/u_memory.h" #include "util/driconf.h" #include "main/framebuffer.h" #include "main/version.h" #include "main/debug_output.h" #include "main/errors.h" #include "loader/loader.h" #include "mesa_interface.h" #include "loader_dri_helper.h" #include "pipe-loader/pipe_loader.h" #include "pipe/p_screen.h" driOptionDescription __dri2ConfigOptions[] = { DRI_CONF_SECTION_DEBUG DRI_CONF_GLX_EXTENSION_OVERRIDE() DRI_CONF_INDIRECT_GL_EXTENSION_OVERRIDE() DRI_CONF_SECTION_END DRI_CONF_SECTION_PERFORMANCE DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_1) DRI_CONF_BLOCK_ON_DEPLETED_BUFFERS(false) DRI_CONF_SECTION_END }; /*****************************************************************/ /** \name Screen handling functions */ /*****************************************************************/ /*@{*/ static void setupLoaderExtensions(struct dri_screen *screen, const __DRIextension **extensions) { static const struct dri_extension_match matches[] = { {__DRI_DRI2_LOADER, 1, offsetof(struct dri_screen, dri2.loader), true}, {__DRI_IMAGE_LOOKUP, 1, offsetof(struct dri_screen, dri2.image), true}, {__DRI_USE_INVALIDATE, 1, offsetof(struct dri_screen, dri2.useInvalidate), true}, {__DRI_BACKGROUND_CALLABLE, 1, offsetof(struct dri_screen, dri2.backgroundCallable), true}, {__DRI_SWRAST_LOADER, 1, offsetof(struct dri_screen, swrast_loader), true}, {__DRI_IMAGE_LOADER, 1, offsetof(struct dri_screen, image.loader), true}, {__DRI_MUTABLE_RENDER_BUFFER_LOADER, 1, offsetof(struct dri_screen, mutableRenderBuffer.loader), true}, {__DRI_KOPPER_LOADER, 1, offsetof(struct dri_screen, kopper_loader), true}, }; loader_bind_extensions(screen, matches, ARRAY_SIZE(matches), extensions); } /** * This is the first entrypoint in the driver called by the DRI driver loader * after dlopen()ing it. * * It's used to create global state for the driver across contexts on the same * Display. */ __DRIscreen * driCreateNewScreen3(int scrn, int fd, const __DRIextension **loader_extensions, enum dri_screen_type type, const __DRIconfig ***driver_configs, bool driver_name_is_inferred, bool has_multibuffer, void *data) { struct dri_screen *screen; screen = CALLOC_STRUCT(dri_screen); if (!screen) return NULL; setupLoaderExtensions(screen, loader_extensions); // dri2 drivers require working invalidate if (fd != -1 && !screen->dri2.useInvalidate) { free(screen); return NULL; } screen->loaderPrivate = data; screen->fd = fd; screen->myNum = scrn; screen->type = type; /* Option parsing before ->InitScreen(), as some options apply there. */ driParseOptionInfo(&screen->optionInfo, __dri2ConfigOptions, ARRAY_SIZE(__dri2ConfigOptions)); driParseConfigFiles(&screen->optionCache, &screen->optionInfo, screen->myNum, "dri2", NULL, NULL, NULL, 0, NULL, 0); (void) mtx_init(&screen->opencl_func_mutex, mtx_plain); struct pipe_screen *pscreen = NULL; switch (type) { case DRI_SCREEN_DRI3: pscreen = dri2_init_screen(screen, driver_name_is_inferred); break; case DRI_SCREEN_KOPPER: pscreen = kopper_init_screen(screen, driver_name_is_inferred); break; case DRI_SCREEN_SWRAST: pscreen = drisw_init_screen(screen, driver_name_is_inferred); break; case DRI_SCREEN_KMS_SWRAST: pscreen = dri_swrast_kms_init_screen(screen, driver_name_is_inferred); break; default: unreachable("unknown dri screen type"); } if (pscreen == NULL) { dri_destroy_screen(screen); return NULL; } *driver_configs = dri_init_screen(screen, pscreen, has_multibuffer); if (*driver_configs == NULL) { dri_destroy_screen(screen); return NULL; } struct gl_constants consts = { 0 }; gl_api api; unsigned version; api = API_OPENGLES2; if (_mesa_override_gl_version_contextless(&consts, &api, &version)) screen->max_gl_es2_version = version; api = API_OPENGL_COMPAT; if (_mesa_override_gl_version_contextless(&consts, &api, &version)) { screen->max_gl_core_version = version; if (api == API_OPENGL_COMPAT) screen->max_gl_compat_version = version; } screen->api_mask = 0; if (screen->max_gl_compat_version > 0) screen->api_mask |= (1 << __DRI_API_OPENGL); if (screen->max_gl_core_version > 0) screen->api_mask |= (1 << __DRI_API_OPENGL_CORE); if (screen->max_gl_es1_version > 0) screen->api_mask |= (1 << __DRI_API_GLES); if (screen->max_gl_es2_version > 0) screen->api_mask |= (1 << __DRI_API_GLES2); if (screen->max_gl_es2_version >= 30) screen->api_mask |= (1 << __DRI_API_GLES3); return opaque_dri_screen(screen); } /** * Destroy the per-screen private information. * * \internal * This function calls __DriverAPIRec::DestroyScreen on \p screenPrivate, calls * drmClose(), and finally frees \p screenPrivate. */ void driDestroyScreen(__DRIscreen *psp) { if (psp) { /* No interaction with the X-server is possible at this point. This * routine is called after XCloseDisplay, so there is no protocol * stream open to the X-server anymore. */ dri_destroy_screen(dri_screen(psp)); } } /*@}*/ /* WARNING: HACK: Local defines to avoid pulling glx.h. */ #define GLX_NONE 0x8000 #define GLX_DONT_CARE 0xFFFFFFFF #define SIMPLE_CASE(attrib, field) case attrib: *value = config->modes.field; break /** * Return the value of a configuration attribute. The attribute is * indicated by the index. */ static int driGetConfigAttribIndex(const __DRIconfig *config, unsigned int index, unsigned int *value) { switch (index + 1) { SIMPLE_CASE(__DRI_ATTRIB_BUFFER_SIZE, rgbBits); SIMPLE_CASE(__DRI_ATTRIB_RED_SIZE, redBits); SIMPLE_CASE(__DRI_ATTRIB_GREEN_SIZE, greenBits); SIMPLE_CASE(__DRI_ATTRIB_BLUE_SIZE, blueBits); case __DRI_ATTRIB_LEVEL: case __DRI_ATTRIB_LUMINANCE_SIZE: case __DRI_ATTRIB_AUX_BUFFERS: *value = 0; break; SIMPLE_CASE(__DRI_ATTRIB_ALPHA_SIZE, alphaBits); case __DRI_ATTRIB_ALPHA_MASK_SIZE: /* I have no idea what this value was ever meant to mean, it's * never been set to anything, just say 0. */ *value = 0; break; SIMPLE_CASE(__DRI_ATTRIB_DEPTH_SIZE, depthBits); SIMPLE_CASE(__DRI_ATTRIB_STENCIL_SIZE, stencilBits); SIMPLE_CASE(__DRI_ATTRIB_ACCUM_RED_SIZE, accumRedBits); SIMPLE_CASE(__DRI_ATTRIB_ACCUM_GREEN_SIZE, accumGreenBits); SIMPLE_CASE(__DRI_ATTRIB_ACCUM_BLUE_SIZE, accumBlueBits); SIMPLE_CASE(__DRI_ATTRIB_ACCUM_ALPHA_SIZE, accumAlphaBits); case __DRI_ATTRIB_SAMPLE_BUFFERS: *value = !!config->modes.samples; break; SIMPLE_CASE(__DRI_ATTRIB_SAMPLES, samples); case __DRI_ATTRIB_RENDER_TYPE: /* no support for color index mode */ *value = __DRI_ATTRIB_RGBA_BIT; if (config->modes.floatMode) *value |= __DRI_ATTRIB_FLOAT_BIT; break; case __DRI_ATTRIB_CONFIG_CAVEAT: if (config->modes.accumRedBits != 0) *value = __DRI_ATTRIB_SLOW_BIT; else *value = 0; break; case __DRI_ATTRIB_CONFORMANT: *value = GL_TRUE; break; SIMPLE_CASE(__DRI_ATTRIB_DOUBLE_BUFFER, doubleBufferMode); SIMPLE_CASE(__DRI_ATTRIB_STEREO, stereoMode); case __DRI_ATTRIB_TRANSPARENT_TYPE: case __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE: /* horrible bc hack */ *value = GLX_NONE; break; case __DRI_ATTRIB_TRANSPARENT_RED_VALUE: case __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE: case __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE: case __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE: *value = GLX_DONT_CARE; break; case __DRI_ATTRIB_FLOAT_MODE: *value = config->modes.floatMode; break; SIMPLE_CASE(__DRI_ATTRIB_RED_MASK, redMask); SIMPLE_CASE(__DRI_ATTRIB_GREEN_MASK, greenMask); SIMPLE_CASE(__DRI_ATTRIB_BLUE_MASK, blueMask); SIMPLE_CASE(__DRI_ATTRIB_ALPHA_MASK, alphaMask); case __DRI_ATTRIB_MAX_PBUFFER_WIDTH: case __DRI_ATTRIB_MAX_PBUFFER_HEIGHT: case __DRI_ATTRIB_MAX_PBUFFER_PIXELS: case __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH: case __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT: case __DRI_ATTRIB_VISUAL_SELECT_GROUP: *value = 0; break; case __DRI_ATTRIB_SWAP_METHOD: /* Not supported any more, but we have the __DRI_ATTRIB still defined * for the X server's sake, and EGL will expect us to handle it because * it iterates all __DRI_ATTRIBs. */ *value = __DRI_ATTRIB_SWAP_UNDEFINED; break; case __DRI_ATTRIB_MAX_SWAP_INTERVAL: *value = INT_MAX; break; case __DRI_ATTRIB_MIN_SWAP_INTERVAL: *value = 0; break; case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB: case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA: case __DRI_ATTRIB_YINVERTED: *value = GL_TRUE; break; case __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE: *value = GL_FALSE; break; case __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS: *value = __DRI_ATTRIB_TEXTURE_1D_BIT | __DRI_ATTRIB_TEXTURE_2D_BIT | __DRI_ATTRIB_TEXTURE_RECTANGLE_BIT; break; SIMPLE_CASE(__DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE, sRGBCapable); case __DRI_ATTRIB_MUTABLE_RENDER_BUFFER: *value = GL_FALSE; break; SIMPLE_CASE(__DRI_ATTRIB_RED_SHIFT, redShift); SIMPLE_CASE(__DRI_ATTRIB_GREEN_SHIFT, greenShift); SIMPLE_CASE(__DRI_ATTRIB_BLUE_SHIFT, blueShift); SIMPLE_CASE(__DRI_ATTRIB_ALPHA_SHIFT, alphaShift); default: /* XXX log an error or smth */ return GL_FALSE; } return GL_TRUE; } /** * Get the value of a configuration attribute. * \param attrib the attribute (one of the _DRI_ATTRIB_x tokens) * \param value returns the attribute's value * \return 1 for success, 0 for failure */ int driGetConfigAttrib(const __DRIconfig *config, unsigned int attrib, unsigned int *value) { return driGetConfigAttribIndex(config, attrib - 1, value); } /** * Get a configuration attribute name and value, given an index. * \param index which field of the __DRIconfig to query * \param attrib returns the attribute name (one of the _DRI_ATTRIB_x tokens) * \param value returns the attribute's value * \return 1 for success, 0 for failure */ int driIndexConfigAttrib(const __DRIconfig *config, int index, unsigned int *attrib, unsigned int *value) { if (driGetConfigAttribIndex(config, index, value)) { *attrib = index + 1; return GL_TRUE; } return GL_FALSE; } static int validate_context_version(struct dri_screen *screen, int mesa_api, unsigned major_version, unsigned minor_version) { unsigned req_version = 10 * major_version + minor_version; unsigned max_version = 0; if (major_version == 0 || major_version > 4) return __DRI_CTX_ERROR_BAD_API; if (mesa_api == API_OPENGL_COMPAT) { if ((major_version == 4 && minor_version > 6) || (major_version == 3 && minor_version > 3) || (major_version == 2 && minor_version > 1) || (major_version == 1 && minor_version > 5)) return __DRI_CTX_ERROR_BAD_API; max_version = screen->max_gl_compat_version; } else if (mesa_api == API_OPENGLES) { if (major_version > 1 || minor_version > 1) return __DRI_CTX_ERROR_BAD_API; max_version = screen->max_gl_es1_version; } else if (mesa_api == API_OPENGLES2) { if ((major_version > 3) || (major_version == 3 && minor_version > 2) || (major_version == 2 && minor_version > 0) || (major_version < 2)) return __DRI_CTX_ERROR_BAD_API; max_version = screen->max_gl_es2_version; } else if (mesa_api == API_OPENGL_CORE) { if ((major_version == 4 && minor_version > 6) || (major_version == 3 && minor_version > 3) || (major_version < 3)) return __DRI_CTX_ERROR_BAD_API; max_version = screen->max_gl_core_version; } else { return __DRI_CTX_ERROR_BAD_API; } if (max_version == 0) return __DRI_CTX_ERROR_BAD_VERSION; if (req_version > max_version) return __DRI_CTX_ERROR_BAD_VERSION; return __DRI_CTX_ERROR_SUCCESS; } /*****************************************************************/ /** \name Context handling functions */ /*****************************************************************/ /*@{*/ __DRIcontext * driCreateContextAttribs(__DRIscreen *psp, int api, const __DRIconfig *config, __DRIcontext *shared, unsigned num_attribs, const uint32_t *attribs, unsigned *error, void *data) { struct dri_screen *screen = dri_screen(psp); const struct gl_config *modes = (config != NULL) ? &config->modes : NULL; gl_api mesa_api; struct __DriverContextConfig ctx_config; ctx_config.major_version = 1; ctx_config.minor_version = 0; ctx_config.flags = 0; ctx_config.attribute_mask = 0; ctx_config.priority = __DRI_CTX_PRIORITY_MEDIUM; assert((num_attribs == 0) || (attribs != NULL)); switch (api) { case __DRI_API_OPENGL: mesa_api = API_OPENGL_COMPAT; break; case __DRI_API_GLES: mesa_api = API_OPENGLES; break; case __DRI_API_GLES2: case __DRI_API_GLES3: mesa_api = API_OPENGLES2; break; case __DRI_API_OPENGL_CORE: mesa_api = API_OPENGL_CORE; break; default: *error = __DRI_CTX_ERROR_BAD_API; return NULL; } for (unsigned i = 0; i < num_attribs; i++) { switch (attribs[i * 2]) { case __DRI_CTX_ATTRIB_MAJOR_VERSION: ctx_config.major_version = attribs[i * 2 + 1]; break; case __DRI_CTX_ATTRIB_MINOR_VERSION: ctx_config.minor_version = attribs[i * 2 + 1]; break; case __DRI_CTX_ATTRIB_FLAGS: ctx_config.flags = attribs[i * 2 + 1]; break; case __DRI_CTX_ATTRIB_RESET_STRATEGY: if (attribs[i * 2 + 1] != __DRI_CTX_RESET_NO_NOTIFICATION) { ctx_config.attribute_mask |= __DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY; ctx_config.reset_strategy = attribs[i * 2 + 1]; } else { ctx_config.attribute_mask &= ~__DRIVER_CONTEXT_ATTRIB_RESET_STRATEGY; } break; case __DRI_CTX_ATTRIB_PRIORITY: ctx_config.attribute_mask |= __DRIVER_CONTEXT_ATTRIB_PRIORITY; ctx_config.priority = attribs[i * 2 + 1]; break; case __DRI_CTX_ATTRIB_RELEASE_BEHAVIOR: if (attribs[i * 2 + 1] != __DRI_CTX_RELEASE_BEHAVIOR_FLUSH) { ctx_config.attribute_mask |= __DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR; ctx_config.release_behavior = attribs[i * 2 + 1]; } else { ctx_config.attribute_mask &= ~__DRIVER_CONTEXT_ATTRIB_RELEASE_BEHAVIOR; } break; case __DRI_CTX_ATTRIB_NO_ERROR: if (attribs[i * 2 + 1] != 0) { ctx_config.attribute_mask |= __DRIVER_CONTEXT_ATTRIB_NO_ERROR; ctx_config.no_error = attribs[i * 2 + 1]; } else { ctx_config.attribute_mask &= ~__DRIVER_CONTEXT_ATTRIB_NO_ERROR; } break; case __DRI_CTX_ATTRIB_PROTECTED: if (attribs[i * 2 + 1]) { ctx_config.attribute_mask |= __DRIVER_CONTEXT_ATTRIB_PROTECTED; } else { ctx_config.attribute_mask &= ~__DRIVER_CONTEXT_ATTRIB_PROTECTED; } break; default: /* We can't create a context that satisfies the requirements of an * attribute that we don't understand. Return failure. */ assert(!"Should not get here."); *error = __DRI_CTX_ERROR_UNKNOWN_ATTRIBUTE; return NULL; } } /* The specific Mesa driver may not support the GL_ARB_compatibilty * extension or the compatibility profile. In that case, we treat an * API_OPENGL_COMPAT 3.1 as API_OPENGL_CORE. We reject API_OPENGL_COMPAT * 3.2+ in any case. */ if (mesa_api == API_OPENGL_COMPAT && ctx_config.major_version == 3 && ctx_config.minor_version == 1 && screen->max_gl_compat_version < 31) mesa_api = API_OPENGL_CORE; /* The latest version of EGL_KHR_create_context spec says: * * "If the EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR flag bit is set in * EGL_CONTEXT_FLAGS_KHR, then a will be created. * [...] This bit is supported for OpenGL and OpenGL ES contexts. * * No other EGL_CONTEXT_OPENGL_*_BIT is legal for an ES context. * * However, Mesa's EGL layer translates the context attribute * EGL_CONTEXT_OPENGL_ROBUST_ACCESS into the context flag * __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS. That attribute is legal for ES * (with EGL 1.5 or EGL_EXT_create_context_robustness) and GL (only with * EGL 1.5). * * From the EGL_EXT_create_context_robustness spec: * * This extension is written against the OpenGL ES 2.0 Specification * but can apply to OpenGL ES 1.1 and up. * * From the EGL 1.5 (2014.08.27) spec, p55: * * If the EGL_CONTEXT_OPENGL_ROBUST_ACCESS attribute is set to * EGL_TRUE, a context supporting robust buffer access will be created. * OpenGL contexts must support the GL_ARB_robustness extension, or * equivalent core API functional- ity. OpenGL ES contexts must support * the GL_EXT_robustness extension, or equivalent core API * functionality. */ if (mesa_api != API_OPENGL_COMPAT && mesa_api != API_OPENGL_CORE && (ctx_config.flags & ~(__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS))) { *error = __DRI_CTX_ERROR_BAD_FLAG; return NULL; } /* There are no forward-compatible contexts before OpenGL 3.0. The * GLX_ARB_create_context spec says: * * "Forward-compatible contexts are defined only for OpenGL versions * 3.0 and later." * * Forward-looking contexts are supported by silently converting the * requested API to API_OPENGL_CORE. * * In Mesa, a debug context is the same as a regular context. */ if ((ctx_config.flags & __DRI_CTX_FLAG_FORWARD_COMPATIBLE) != 0) { mesa_api = API_OPENGL_CORE; } const uint32_t allowed_flags = (__DRI_CTX_FLAG_DEBUG | __DRI_CTX_FLAG_FORWARD_COMPATIBLE | __DRI_CTX_FLAG_ROBUST_BUFFER_ACCESS | __DRI_CTX_FLAG_RESET_ISOLATION); if (ctx_config.flags & ~allowed_flags) { *error = __DRI_CTX_ERROR_UNKNOWN_FLAG; return NULL; } *error = validate_context_version(screen, mesa_api, ctx_config.major_version, ctx_config.minor_version); if (*error != __DRI_CTX_ERROR_SUCCESS) return NULL; struct dri_context *ctx = dri_create_context(screen, mesa_api, modes, &ctx_config, error, dri_context(shared), data); return opaque_dri_context(ctx); } static __DRIcontext * driCreateNewContextForAPI(__DRIscreen *screen, int api, const __DRIconfig *config, __DRIcontext *shared, void *data) { unsigned error; return driCreateContextAttribs(screen, api, config, shared, 0, NULL, &error, data); } __DRIcontext * driCreateNewContext(__DRIscreen *screen, const __DRIconfig *config, __DRIcontext *shared, void *data) { return driCreateNewContextForAPI(screen, __DRI_API_OPENGL, config, shared, data); } /** * Destroy the per-context private information. * * \internal * This function calls __DriverAPIRec::DestroyContext on \p contextPrivate, calls * drmDestroyContext(), and finally frees \p contextPrivate. */ void driDestroyContext(__DRIcontext *pcp) { if (pcp) dri_destroy_context(dri_context(pcp)); } int driCopyContext(__DRIcontext *dest, __DRIcontext *src, unsigned long mask) { (void) dest; (void) src; (void) mask; return GL_FALSE; } /*@}*/ /*****************************************************************/ /** \name Context (un)binding functions */ /*****************************************************************/ /*@{*/ /** * This function takes both a read buffer and a draw buffer. This is needed * for \c glXMakeCurrentReadSGI or GLX 1.3's \c glXMakeContextCurrent * function. */ int driBindContext(__DRIcontext *pcp, __DRIdrawable *pdp, __DRIdrawable *prp) { /* ** Assume error checking is done properly in glXMakeCurrent before ** calling driBindContext. */ if (!pcp) return GL_FALSE; return dri_make_current(dri_context(pcp), dri_drawable(pdp), dri_drawable(prp)); } /** * Unbind context. * * \param scrn the screen. * \param gc context. * * \return \c GL_TRUE on success, or \c GL_FALSE on failure. * * \internal * This function calls __DriverAPIRec::UnbindContext, and then decrements * dri_drawable::refcount which must be non-zero for a successful * return. * * While casting the opaque private pointers associated with the parameters * into their respective real types it also assures they are not \c NULL. */ int driUnbindContext(__DRIcontext *pcp) { /* ** Assume error checking is done properly in glXMakeCurrent before ** calling driUnbindContext. */ if (pcp == NULL) return GL_FALSE; /* ** Call dri_unbind_context before checking for valid drawables ** to handle surfaceless contexts properly. */ return dri_unbind_context(dri_context(pcp)); } /*@}*/ void driDestroyDrawable(__DRIdrawable *pdp) { dri_put_drawable(dri_drawable(pdp)); } static int dri2ConfigQueryb(__DRIscreen *psp, const char *var, unsigned char *val) { struct dri_screen *screen = dri_screen(psp); if (!driCheckOption(&screen->optionCache, var, DRI_BOOL)) return -1; *val = driQueryOptionb(&screen->optionCache, var); return 0; } static int dri2ConfigQueryi(__DRIscreen *psp, const char *var, int *val) { struct dri_screen *screen = dri_screen(psp); if (!driCheckOption(&screen->optionCache, var, DRI_INT) && !driCheckOption(&screen->optionCache, var, DRI_ENUM)) return -1; *val = driQueryOptioni(&screen->optionCache, var); return 0; } static int dri2ConfigQueryf(__DRIscreen *psp, const char *var, float *val) { struct dri_screen *screen = dri_screen(psp); if (!driCheckOption(&screen->optionCache, var, DRI_FLOAT)) return -1; *val = driQueryOptionf(&screen->optionCache, var); return 0; } static int dri2ConfigQuerys(__DRIscreen *psp, const char *var, char **val) { struct dri_screen *screen = dri_screen(psp); if (!driCheckOption(&screen->optionCache, var, DRI_STRING)) return -1; *val = driQueryOptionstr(&screen->optionCache, var); return 0; } /** * \brief the DRI2ConfigQueryExtension configQueryb method */ int dri2GalliumConfigQueryb(__DRIscreen *sPriv, const char *var, unsigned char *val) { struct dri_screen *screen = dri_screen(sPriv); if (!driCheckOption(&screen->dev->option_cache, var, DRI_BOOL)) return dri2ConfigQueryb(sPriv, var, val); *val = driQueryOptionb(&screen->dev->option_cache, var); return 0; } /** * \brief the DRI2ConfigQueryExtension configQueryi method */ int dri2GalliumConfigQueryi(__DRIscreen *sPriv, const char *var, int *val) { struct dri_screen *screen = dri_screen(sPriv); if (!driCheckOption(&screen->dev->option_cache, var, DRI_INT) && !driCheckOption(&screen->dev->option_cache, var, DRI_ENUM)) return dri2ConfigQueryi(sPriv, var, val); *val = driQueryOptioni(&screen->dev->option_cache, var); return 0; } /** * \brief the DRI2ConfigQueryExtension configQueryf method */ int dri2GalliumConfigQueryf(__DRIscreen *sPriv, const char *var, float *val) { struct dri_screen *screen = dri_screen(sPriv); if (!driCheckOption(&screen->dev->option_cache, var, DRI_FLOAT)) return dri2ConfigQueryf(sPriv, var, val); *val = driQueryOptionf(&screen->dev->option_cache, var); return 0; } /** * \brief the DRI2ConfigQueryExtension configQuerys method */ int dri2GalliumConfigQuerys(__DRIscreen *sPriv, const char *var, char **val) { struct dri_screen *screen = dri_screen(sPriv); if (!driCheckOption(&screen->dev->option_cache, var, DRI_STRING)) return dri2ConfigQuerys(sPriv, var, val); *val = driQueryOptionstr(&screen->dev->option_cache, var); return 0; } /** * \brief the DRI2ConfigQueryExtension struct. * * We first query the driver option cache. Then the dri2 option cache. */ const __DRI2configQueryExtension dri2GalliumConfigQueryExtension = { .base = { __DRI2_CONFIG_QUERY, 2 }, .configQueryb = dri2GalliumConfigQueryb, .configQueryi = dri2GalliumConfigQueryi, .configQueryf = dri2GalliumConfigQueryf, .configQuerys = dri2GalliumConfigQuerys, }; unsigned int driGetAPIMask(__DRIscreen *screen) { return dri_screen(screen)->api_mask; } /** * swrast swapbuffers entrypoint. * * DRI2 implements this inside the loader with only flushes handled by the * driver. */ void driSwapBuffersWithDamage(__DRIdrawable *pdp, int nrects, const int *rects) { struct dri_drawable *drawable = dri_drawable(pdp); assert(drawable->screen->swrast_loader); drawable->swap_buffers_with_damage(drawable, nrects, rects); } void driSwapBuffers(__DRIdrawable *pdp) { struct dri_drawable *drawable = dri_drawable(pdp); assert(drawable->screen->swrast_loader); drawable->swap_buffers(drawable); } int driSWRastQueryBufferAge(__DRIdrawable *pdp) { struct dri_drawable *drawable = dri_drawable(pdp); return drawable->buffer_age; } /* * Note: the first match is returned, which is important for formats like * __DRI_IMAGE_FORMAT_R8 which maps to both MESA_FORMAT_{R,L}_UNORM8 */ static const struct { uint32_t image_format; GLenum internal_format; } format_mapping[] = { { .image_format = __DRI_IMAGE_FORMAT_RGB565, .internal_format = GL_RGB565, }, { .image_format = __DRI_IMAGE_FORMAT_ARGB1555, .internal_format = GL_RGB5_A1, }, { .image_format = __DRI_IMAGE_FORMAT_ABGR1555, .internal_format = GL_RGB5_A1, }, { .image_format = __DRI_IMAGE_FORMAT_XRGB8888, .internal_format = GL_RGB8, }, { .image_format = __DRI_IMAGE_FORMAT_ABGR16161616F, .internal_format = GL_RGBA16F, }, { .image_format = __DRI_IMAGE_FORMAT_XBGR16161616F, .internal_format = GL_RGB16F, }, { .image_format = __DRI_IMAGE_FORMAT_ABGR16161616, .internal_format = GL_RGBA16, }, { .image_format = __DRI_IMAGE_FORMAT_XBGR16161616, .internal_format = GL_RGB16, }, { .image_format = __DRI_IMAGE_FORMAT_ARGB2101010, .internal_format = GL_RGB10_A2, }, { .image_format = __DRI_IMAGE_FORMAT_XRGB2101010, .internal_format = GL_RGB10, }, { .image_format = __DRI_IMAGE_FORMAT_ABGR2101010, .internal_format = GL_RGB10_A2, }, { .image_format = __DRI_IMAGE_FORMAT_XBGR2101010, .internal_format = GL_RGB10, }, { .image_format = __DRI_IMAGE_FORMAT_ARGB8888, .internal_format = GL_RGBA8, }, { .image_format = __DRI_IMAGE_FORMAT_ABGR8888, .internal_format = GL_RGBA8, }, { .image_format = __DRI_IMAGE_FORMAT_XBGR8888, .internal_format = GL_RGB8, }, { .image_format = __DRI_IMAGE_FORMAT_R8, .internal_format = GL_R8, }, { .image_format = __DRI_IMAGE_FORMAT_R8, .internal_format = GL_R8, }, #if UTIL_ARCH_LITTLE_ENDIAN { .image_format = __DRI_IMAGE_FORMAT_GR88, .internal_format = GL_RG8, }, { .image_format = __DRI_IMAGE_FORMAT_GR88, .internal_format = GL_RG8, }, #endif { .image_format = __DRI_IMAGE_FORMAT_SABGR8, .internal_format = GL_SRGB8_ALPHA8, }, { .image_format = __DRI_IMAGE_FORMAT_SARGB8, .internal_format = GL_SRGB8_ALPHA8, }, { .image_format = __DRI_IMAGE_FORMAT_SXRGB8, .internal_format = GL_SRGB8, }, { .image_format = __DRI_IMAGE_FORMAT_R16, .internal_format = GL_R16, }, { .image_format = __DRI_IMAGE_FORMAT_R16, .internal_format = GL_R16, }, #if UTIL_ARCH_LITTLE_ENDIAN { .image_format = __DRI_IMAGE_FORMAT_GR1616, .internal_format = GL_RG16, }, { .image_format = __DRI_IMAGE_FORMAT_GR1616, .internal_format = GL_RG16, }, #endif { .image_format = __DRI_IMAGE_FORMAT_ARGB4444, .internal_format = GL_RGBA4, }, { .image_format = __DRI_IMAGE_FORMAT_ABGR4444, .internal_format = GL_RGBA4, }, }; uint32_t driImageFormatToSizedInternalGLFormat(uint32_t image_format) { for (size_t i = 0; i < ARRAY_SIZE(format_mapping); i++) if (format_mapping[i].image_format == image_format) return format_mapping[i].internal_format; return GL_NONE; } static int dri_vblank_mode(__DRIscreen *driScreen) { GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1; dri2GalliumConfigQueryi(driScreen, "vblank_mode", &vblank_mode); return vblank_mode; } int dri_get_initial_swap_interval(__DRIscreen *driScreen) { int vblank_mode = dri_vblank_mode(driScreen); switch (vblank_mode) { case DRI_CONF_VBLANK_NEVER: case DRI_CONF_VBLANK_DEF_INTERVAL_0: return 0; case DRI_CONF_VBLANK_DEF_INTERVAL_1: case DRI_CONF_VBLANK_ALWAYS_SYNC: default: return 1; } } bool dri_valid_swap_interval(__DRIscreen *driScreen, int interval) { int vblank_mode = dri_vblank_mode(driScreen); switch (vblank_mode) { case DRI_CONF_VBLANK_NEVER: if (interval != 0) return false; break; case DRI_CONF_VBLANK_ALWAYS_SYNC: if (interval <= 0) return false; break; default: break; } return true; } struct pipe_screen * dri_get_pipe_screen(__DRIscreen *driScreen) { struct dri_screen *screen = dri_screen(driScreen); return screen->base.screen; } int dri_get_screen_param(__DRIscreen *driScreen, enum pipe_cap param) { struct pipe_screen *screen = dri_get_pipe_screen(driScreen); return screen->get_param(screen, param); }