diff options
Diffstat (limited to 'src/gallium/state_trackers/egl/common/egl_g3d.c')
| -rw-r--r-- | src/gallium/state_trackers/egl/common/egl_g3d.c | 1344 |
1 files changed, 1344 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/egl/common/egl_g3d.c b/src/gallium/state_trackers/egl/common/egl_g3d.c new file mode 100644 index 0000000000..6c8f3b9f79 --- /dev/null +++ b/src/gallium/state_trackers/egl/common/egl_g3d.c @@ -0,0 +1,1344 @@ +/* + * Mesa 3-D graphics library + * Version: 7.8 + * + * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org> + * + * 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 + * BRIAN PAUL 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 <assert.h> +#include <string.h> +#include "pipe/p_screen.h" +#include "util/u_memory.h" +#include "util/u_rect.h" +#include "egldriver.h" +#include "eglcurrent.h" +#include "eglconfigutil.h" +#include "egllog.h" + +#include "native.h" +#include "egl_g3d.h" +#include "egl_st.h" + +/** + * Validate the draw/read surfaces of the context. + */ +static void +egl_g3d_validate_context(_EGLDisplay *dpy, _EGLContext *ctx) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + struct pipe_screen *screen = gdpy->native->screen; + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + const uint st_att_map[NUM_NATIVE_ATTACHMENTS] = { + ST_SURFACE_FRONT_LEFT, + ST_SURFACE_BACK_LEFT, + ST_SURFACE_FRONT_RIGHT, + ST_SURFACE_BACK_RIGHT, + }; + EGLint num_surfaces, s; + + /* validate draw and/or read buffers */ + num_surfaces = (gctx->base.ReadSurface == gctx->base.DrawSurface) ? 1 : 2; + for (s = 0; s < num_surfaces; s++) { + struct pipe_texture *textures[NUM_NATIVE_ATTACHMENTS]; + struct egl_g3d_surface *gsurf; + struct egl_g3d_buffer *gbuf; + EGLint att; + + if (s == 0) { + gsurf = egl_g3d_surface(gctx->base.DrawSurface); + gbuf = &gctx->draw; + } + else { + gsurf = egl_g3d_surface(gctx->base.ReadSurface); + gbuf = &gctx->read; + } + + if (!gctx->force_validate) { + unsigned int seq_num; + + gsurf->native->validate(gsurf->native, gbuf->attachment_mask, + &seq_num, NULL, NULL, NULL); + /* skip validation */ + if (gsurf->sequence_number == seq_num) + continue; + } + + pipe_surface_reference(&gsurf->render_surface, NULL); + memset(textures, 0, sizeof(textures)); + + gsurf->native->validate(gsurf->native, gbuf->attachment_mask, + &gsurf->sequence_number, textures, + &gsurf->base.Width, &gsurf->base.Height); + for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) { + struct pipe_texture *pt = textures[att]; + struct pipe_surface *ps; + + if (native_attachment_mask_test(gbuf->attachment_mask, att) && pt) { + ps = screen->get_tex_surface(screen, pt, 0, 0, 0, + PIPE_BUFFER_USAGE_GPU_READ | + PIPE_BUFFER_USAGE_GPU_WRITE); + gctx->stapi->st_set_framebuffer_surface(gbuf->st_fb, + st_att_map[att], ps); + + if (gsurf->render_att == att) + pipe_surface_reference(&gsurf->render_surface, ps); + + pipe_surface_reference(&ps, NULL); + pipe_texture_reference(&pt, NULL); + } + } + + gctx->stapi->st_resize_framebuffer(gbuf->st_fb, + gsurf->base.Width, gsurf->base.Height); + } + + gctx->force_validate = EGL_FALSE; + +} + +/** + * Create a st_framebuffer. + */ +static struct st_framebuffer * +create_framebuffer(_EGLContext *ctx, _EGLSurface *surf) +{ + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + struct egl_g3d_surface *gsurf = egl_g3d_surface(surf); + struct egl_g3d_config *gconf = egl_g3d_config(gsurf->base.Config); + + return gctx->stapi->st_create_framebuffer(&gconf->native->mode, + gconf->native->color_format, gconf->native->depth_format, + gconf->native->stencil_format, + gsurf->base.Width, gsurf->base.Height, &gsurf->base); +} + +/** + * Update the attachments of draw/read surfaces. + */ +static void +egl_g3d_route_context(_EGLDisplay *dpy, _EGLContext *ctx) +{ + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + EGLint s; + + /* route draw and read buffers' attachments */ + for (s = 0; s < 2; s++) { + struct egl_g3d_surface *gsurf; + struct egl_g3d_buffer *gbuf; + + if (s == 0) { + gsurf = egl_g3d_surface(gctx->base.DrawSurface); + gbuf = &gctx->draw; + } + else { + gsurf = egl_g3d_surface(gctx->base.ReadSurface); + gbuf = &gctx->read; + } + + gbuf->attachment_mask = (1 << gsurf->render_att); + + /* FIXME OpenGL defaults to draw the front or back buffer when the + * context is single-buffered or double-buffered respectively. In EGL, + * however, the buffer to be drawn is determined by the surface, instead + * of the context. As a result, rendering to a pixmap surface with a + * double-buffered context does not work as expected. + * + * gctx->stapi->st_draw_front_buffer(gctx->st_ctx, natt == + * NATIVE_ATTACHMENT_FRONT_LEFT); + */ + + /* + * FIXME If the back buffer is asked for here, and the front buffer is + * later needed by the client API (e.g. glDrawBuffer is called to draw + * the front buffer), it will create a new pipe texture and draw there. + * One fix is to ask for both buffers here, but it would be a waste if + * the front buffer is never used. A better fix is to add a callback to + * the pipe screen with context private (just like flush_frontbuffer). + */ + } +} + +/** + * Reallocate the context's framebuffers after draw/read surfaces change. + */ +static EGLBoolean +egl_g3d_realloc_context(_EGLDisplay *dpy, _EGLContext *ctx) +{ + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + struct egl_g3d_surface *gdraw = egl_g3d_surface(gctx->base.DrawSurface); + struct egl_g3d_surface *gread = egl_g3d_surface(gctx->base.ReadSurface); + + /* unreference the old framebuffers */ + if (gctx->draw.st_fb) { + EGLBoolean is_equal = (gctx->draw.st_fb == gctx->read.st_fb); + void *priv; + + priv = gctx->stapi->st_framebuffer_private(gctx->draw.st_fb); + if (!gdraw || priv != (void *) &gdraw->base) { + gctx->stapi->st_unreference_framebuffer(gctx->draw.st_fb); + gctx->draw.st_fb = NULL; + gctx->draw.attachment_mask = 0x0; + } + + if (is_equal) { + gctx->read.st_fb = NULL; + gctx->draw.attachment_mask = 0x0; + } + else { + priv = gctx->stapi->st_framebuffer_private(gctx->read.st_fb); + if (!gread || priv != (void *) &gread->base) { + gctx->stapi->st_unreference_framebuffer(gctx->read.st_fb); + gctx->read.st_fb = NULL; + gctx->draw.attachment_mask = 0x0; + } + } + } + + if (!gdraw) + return EGL_TRUE; + + /* create the draw fb */ + if (!gctx->draw.st_fb) { + gctx->draw.st_fb = create_framebuffer(&gctx->base, &gdraw->base); + if (!gctx->draw.st_fb) + return EGL_FALSE; + } + + /* create the read fb */ + if (!gctx->read.st_fb) { + if (gread != gdraw) { + gctx->read.st_fb = create_framebuffer(&gctx->base, &gread->base); + if (!gctx->read.st_fb) { + gctx->stapi->st_unreference_framebuffer(gctx->draw.st_fb); + gctx->draw.st_fb = NULL; + return EGL_FALSE; + } + } + else { + /* there is no st_reference_framebuffer... */ + gctx->read.st_fb = gctx->draw.st_fb; + } + } + + egl_g3d_route_context(dpy, &gctx->base); + gctx->force_validate = EGL_TRUE; + + return EGL_TRUE; +} + +/** + * Return the state tracker for the given context. + */ +static const struct egl_g3d_st * +egl_g3d_choose_st(_EGLDriver *drv, _EGLContext *ctx) +{ + struct egl_g3d_driver *gdrv = egl_g3d_driver(drv); + const struct egl_g3d_st *stapi; + EGLint idx = -1; + + switch (ctx->ClientAPI) { + case EGL_OPENGL_ES_API: + switch (ctx->ClientVersion) { + case 1: + idx = EGL_G3D_ST_OPENGL_ES; + break; + case 2: + idx = EGL_G3D_ST_OPENGL_ES2; + break; + default: + _eglLog(_EGL_WARNING, "unknown client version %d", + ctx->ClientVersion); + break; + } + break; + case EGL_OPENVG_API: + idx = EGL_G3D_ST_OPENVG; + break; + case EGL_OPENGL_API: + idx = EGL_G3D_ST_OPENGL; + break; + default: + _eglLog(_EGL_WARNING, "unknown client API 0x%04x", ctx->ClientAPI); + break; + } + + stapi = (idx >= 0) ? gdrv->stapis[idx] : NULL; + return stapi; +} + +/** + * Initialize the state trackers. + */ +static void +egl_g3d_init_st(_EGLDriver *drv) +{ + struct egl_g3d_driver *gdrv = egl_g3d_driver(drv); + EGLint i; + + /* already initialized */ + if (gdrv->api_mask) + return; + + for (i = 0; i < NUM_EGL_G3D_STS; i++) { + gdrv->stapis[i] = egl_g3d_get_st(i); + if (gdrv->stapis[i]) + gdrv->api_mask |= gdrv->stapis[i]->api_bit; + } + + if (gdrv->api_mask) + _eglLog(_EGL_DEBUG, "Driver API mask: 0x%x", gdrv->api_mask); + else + _eglLog(_EGL_WARNING, "No supported client API"); +} + +/** + * Get the probe object of the display. + * + * Note that this function may be called before the display is initialized. + */ +static struct native_probe * +egl_g3d_get_probe(_EGLDriver *drv, _EGLDisplay *dpy) +{ + struct egl_g3d_driver *gdrv = egl_g3d_driver(drv); + struct native_probe *nprobe; + + nprobe = (struct native_probe *) _eglGetProbeCache(gdrv->probe_key); + if (!nprobe || nprobe->display != dpy->NativeDisplay) { + if (nprobe) + nprobe->destroy(nprobe); + nprobe = native_create_probe(dpy->NativeDisplay); + _eglSetProbeCache(gdrv->probe_key, (void *) nprobe); + } + + return nprobe; +} + +/** + * Destroy the probe object of the display. The display may be NULL. + * + * Note that this function may be called before the display is initialized. + */ +static void +egl_g3d_destroy_probe(_EGLDriver *drv, _EGLDisplay *dpy) +{ + struct egl_g3d_driver *gdrv = egl_g3d_driver(drv); + struct native_probe *nprobe; + + nprobe = (struct native_probe *) _eglGetProbeCache(gdrv->probe_key); + if (nprobe && (!dpy || nprobe->display == dpy->NativeDisplay)) { + nprobe->destroy(nprobe); + _eglSetProbeCache(gdrv->probe_key, NULL); + } +} + +/** + * Return an API mask that consists of the state trackers that supports the + * given mode. + * + * FIXME add st_is_mode_supported()? + */ +static EGLint +get_mode_api_mask(const __GLcontextModes *mode, EGLint api_mask) +{ + EGLint check; + + /* OpenGL ES 1.x and 2.x are checked together */ + check = EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT; + if (api_mask & check) { + /* this is required by EGL, not by OpenGL ES */ + if (mode->drawableType & GLX_WINDOW_BIT && !mode->doubleBufferMode) + api_mask &= ~check; + } + + check = EGL_OPENVG_BIT; + if (api_mask & check) { + /* vega st needs the depth/stencil rb */ + if (!mode->depthBits && !mode->stencilBits) + api_mask &= ~check; + } + + return api_mask; +} + +#ifdef EGL_MESA_screen_surface + +static void +egl_g3d_add_screens(_EGLDriver *drv, _EGLDisplay *dpy) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + const struct native_connector **native_connectors; + EGLint num_connectors, i; + + native_connectors = + gdpy->native->modeset->get_connectors(gdpy->native, &num_connectors, NULL); + if (!num_connectors) { + if (native_connectors) + free(native_connectors); + return; + } + + for (i = 0; i < num_connectors; i++) { + const struct native_connector *nconn = native_connectors[i]; + struct egl_g3d_screen *gscr; + const struct native_mode **native_modes; + EGLint num_modes, j; + + /* TODO support for hotplug */ + native_modes = + gdpy->native->modeset->get_modes(gdpy->native, nconn, &num_modes); + if (!num_modes) { + if (native_modes) + free(native_modes); + continue; + } + + gscr = CALLOC_STRUCT(egl_g3d_screen); + if (!gscr) { + free(native_modes); + continue; + } + + _eglInitScreen(&gscr->base); + + for (j = 0; j < num_modes; j++) { + const struct native_mode *nmode = native_modes[j]; + _EGLMode *mode; + + mode = _eglAddNewMode(&gscr->base, nmode->width, nmode->height, + nmode->refresh_rate, nmode->desc); + if (!mode) + break; + /* gscr->native_modes and gscr->base.Modes should be consistent */ + assert(mode == &gscr->base.Modes[j]); + } + + gscr->native = nconn; + gscr->native_modes = native_modes; + + _eglAddScreen(dpy, &gscr->base); + } + + free(native_connectors); +} + +#endif /* EGL_MESA_screen_surface */ + +/** + * Add configs to display and return the next config ID. + */ +static EGLint +egl_g3d_add_configs(_EGLDriver *drv, _EGLDisplay *dpy, EGLint id) +{ + struct egl_g3d_driver *gdrv = egl_g3d_driver(drv); + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + const struct native_config **native_configs; + int num_configs, i; + + native_configs = gdpy->native->get_configs(gdpy->native, + &num_configs); + if (!num_configs) { + if (native_configs) + free(native_configs); + return id; + } + + for (i = 0; i < num_configs; i++) { + EGLint api_mask; + struct egl_g3d_config *gconf; + EGLBoolean valid; + + gconf = CALLOC_STRUCT(egl_g3d_config); + if (!gconf) + continue; + + _eglInitConfig(&gconf->base, id); + + api_mask = get_mode_api_mask(&native_configs[i]->mode, gdrv->api_mask); + if (!api_mask) { + _eglLog(_EGL_DEBUG, "no state tracker supports config 0x%x", + native_configs[i]->mode.visualID); + } + + valid = _eglConfigFromContextModesRec(&gconf->base, + &native_configs[i]->mode, api_mask, api_mask); + if (valid) { +#ifdef EGL_MESA_screen_surface + /* check if scanout surface bit is set */ + if (native_configs[i]->scanout_bit) { + EGLint val = GET_CONFIG_ATTRIB(&gconf->base, EGL_SURFACE_TYPE); + val |= EGL_SCREEN_BIT_MESA; + SET_CONFIG_ATTRIB(&gconf->base, EGL_SURFACE_TYPE, val); + } +#endif + valid = _eglValidateConfig(&gconf->base, EGL_FALSE); + } + if (!valid) { + _eglLog(_EGL_DEBUG, "skip invalid config 0x%x", + native_configs[i]->mode.visualID); + free(gconf); + continue; + } + + gconf->native = native_configs[i]; + _eglAddConfig(dpy, &gconf->base); + id++; + } + + free(native_configs); + return id; +} + +/** + * Flush the front buffer of the context's draw surface. + */ +static void +egl_g3d_flush_frontbuffer(struct pipe_screen *screen, + struct pipe_surface *surf, void *context_private) +{ + struct egl_g3d_context *gctx = egl_g3d_context(context_private); + struct egl_g3d_surface *gsurf = egl_g3d_surface(gctx->base.DrawSurface); + + if (gsurf) + gsurf->native->flush_frontbuffer(gsurf->native); +} + +/** + * Re-validate the context. + */ +static void +egl_g3d_update_buffer(struct pipe_screen *screen, void *context_private) +{ + struct egl_g3d_context *gctx = egl_g3d_context(context_private); + + /** + * It is likely that the surface has changed when this function is called. + * Set force_validate to skip an unnecessary check. + */ + gctx->force_validate = EGL_TRUE; + egl_g3d_validate_context(gctx->base.Resource.Display, &gctx->base); +} + +static EGLBoolean +egl_g3d_terminate(_EGLDriver *drv, _EGLDisplay *dpy) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + EGLint i; + + _eglReleaseDisplayResources(drv, dpy); + _eglCleanupDisplay(dpy); + + if (dpy->Screens) { + for (i = 0; i < dpy->NumScreens; i++) { + struct egl_g3d_screen *gscr = egl_g3d_screen(dpy->Screens[i]); + free(gscr->native_modes); + free(gscr); + } + free(dpy->Screens); + } + + if (gdpy->native) + gdpy->native->destroy(gdpy->native); + + free(gdpy); + dpy->DriverData = NULL; + + return EGL_TRUE; +} + +static EGLBoolean +egl_g3d_initialize(_EGLDriver *drv, _EGLDisplay *dpy, + EGLint *major, EGLint *minor) +{ + struct egl_g3d_driver *gdrv = egl_g3d_driver(drv); + struct egl_g3d_display *gdpy; + + /* the probe object is unlikely to be needed again */ + egl_g3d_destroy_probe(drv, dpy); + + gdpy = CALLOC_STRUCT(egl_g3d_display); + if (!gdpy) { + _eglError(EGL_BAD_ALLOC, "eglInitialize"); + goto fail; + } + dpy->DriverData = gdpy; + + gdpy->native = native_create_display(dpy->NativeDisplay); + if (!gdpy->native) { + _eglError(EGL_NOT_INITIALIZED, "eglInitialize(no usable display)"); + goto fail; + } + + gdpy->native->screen->flush_frontbuffer = egl_g3d_flush_frontbuffer; + gdpy->native->screen->update_buffer = egl_g3d_update_buffer; + + egl_g3d_init_st(&gdrv->base); + dpy->ClientAPIsMask = gdrv->api_mask; + + if (egl_g3d_add_configs(drv, dpy, 1) == 1) { + _eglError(EGL_NOT_INITIALIZED, "eglInitialize(unable to add configs)"); + goto fail; + } + +#ifdef EGL_MESA_screen_surface + /* enable MESA_screen_surface */ + if (gdpy->native->modeset) { + dpy->Extensions.MESA_screen_surface = EGL_TRUE; + egl_g3d_add_screens(drv, dpy); + } +#endif + + *major = 1; + *minor = 4; + + return EGL_TRUE; + +fail: + if (gdpy) + egl_g3d_terminate(drv, dpy); + return EGL_FALSE; +} + +static _EGLContext * +egl_g3d_create_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf, + _EGLContext *share, const EGLint *attribs) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + struct egl_g3d_context *gshare = egl_g3d_context(share); + struct egl_g3d_config *gconf = egl_g3d_config(conf); + struct egl_g3d_context *gctx; + const __GLcontextModes *mode; + + gctx = CALLOC_STRUCT(egl_g3d_context); + if (!gctx) { + _eglError(EGL_BAD_ALLOC, "eglCreateContext"); + return NULL; + } + + if (!_eglInitContext(drv, &gctx->base, conf, attribs)) { + free(gctx); + return NULL; + } + + gctx->stapi = egl_g3d_choose_st(drv, &gctx->base); + if (!gctx->stapi) { + free(gctx); + return NULL; + } + + mode = &gconf->native->mode; + gctx->pipe = + gdpy->native->create_context(gdpy->native, (void *) &gctx->base); + if (!gctx->pipe) { + free(gctx); + return NULL; + } + + gctx->st_ctx = gctx->stapi->st_create_context(gctx->pipe, mode, + (gshare) ? gshare->st_ctx : NULL); + if (!gctx->st_ctx) { + gctx->pipe->destroy(gctx->pipe); + free(gctx); + return NULL; + } + + return &gctx->base; +} + +/** + * Destroy a context. + */ +static void +destroy_context(_EGLDisplay *dpy, _EGLContext *ctx) +{ + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + + /* FIXME a context might live longer than its display */ + if (!dpy->Initialized) + _eglLog(_EGL_FATAL, "destroy a context with an unitialized display"); + + egl_g3d_realloc_context(dpy, &gctx->base); + /* it will destroy the associated pipe context */ + gctx->stapi->st_destroy_context(gctx->st_ctx); + + free(gctx); +} + +static EGLBoolean +egl_g3d_destroy_context(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx) +{ + if (!_eglIsContextBound(ctx)) + destroy_context(dpy, ctx); + return EGL_TRUE; +} + +static EGLBoolean +init_surface_geometry(_EGLSurface *surf) +{ + struct egl_g3d_surface *gsurf = egl_g3d_surface(surf); + + return gsurf->native->validate(gsurf->native, 0x0, + &gsurf->sequence_number, NULL, + &gsurf->base.Width, &gsurf->base.Height); +} + +static _EGLSurface * +egl_g3d_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy, + _EGLConfig *conf, EGLNativeWindowType win, + const EGLint *attribs) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + struct egl_g3d_config *gconf = egl_g3d_config(conf); + struct egl_g3d_surface *gsurf; + + gsurf = CALLOC_STRUCT(egl_g3d_surface); + if (!gsurf) { + _eglError(EGL_BAD_ALLOC, "eglCreateWindowSurface"); + return NULL; + } + + if (!_eglInitSurface(drv, &gsurf->base, EGL_WINDOW_BIT, conf, attribs)) { + free(gsurf); + return NULL; + } + + gsurf->native = + gdpy->native->create_window_surface(gdpy->native, win, gconf->native); + if (!gsurf->native) { + free(gsurf); + return NULL; + } + + if (!init_surface_geometry(&gsurf->base)) { + gsurf->native->destroy(gsurf->native); + free(gsurf); + return NULL; + } + + gsurf->render_att = (gsurf->base.RenderBuffer == EGL_SINGLE_BUFFER || + !gconf->native->mode.doubleBufferMode) ? + NATIVE_ATTACHMENT_FRONT_LEFT : NATIVE_ATTACHMENT_BACK_LEFT; + + return &gsurf->base; +} + +static _EGLSurface * +egl_g3d_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy, + _EGLConfig *conf, EGLNativePixmapType pix, + const EGLint *attribs) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + struct egl_g3d_config *gconf = egl_g3d_config(conf); + struct egl_g3d_surface *gsurf; + + gsurf = CALLOC_STRUCT(egl_g3d_surface); + if (!gsurf) { + _eglError(EGL_BAD_ALLOC, "eglCreatePixmapSurface"); + return NULL; + } + + if (!_eglInitSurface(drv, &gsurf->base, EGL_PIXMAP_BIT, conf, attribs)) { + free(gsurf); + return NULL; + } + + gsurf->native = + gdpy->native->create_pixmap_surface(gdpy->native, pix, gconf->native); + if (!gsurf->native) { + free(gsurf); + return NULL; + } + + if (!init_surface_geometry(&gsurf->base)) { + gsurf->native->destroy(gsurf->native); + free(gsurf); + return NULL; + } + + gsurf->render_att = NATIVE_ATTACHMENT_FRONT_LEFT; + + return &gsurf->base; +} + +static _EGLSurface * +egl_g3d_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy, + _EGLConfig *conf, const EGLint *attribs) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + struct egl_g3d_config *gconf = egl_g3d_config(conf); + struct egl_g3d_surface *gsurf; + + gsurf = CALLOC_STRUCT(egl_g3d_surface); + if (!gsurf) { + _eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface"); + return NULL; + } + + if (!_eglInitSurface(drv, &gsurf->base, EGL_PBUFFER_BIT, conf, attribs)) { + free(gsurf); + return NULL; + } + + gsurf->native = + gdpy->native->create_pbuffer_surface(gdpy->native, gconf->native, + gsurf->base.Width, gsurf->base.Height); + if (!gsurf->native) { + free(gsurf); + return NULL; + } + + if (!init_surface_geometry(&gsurf->base)) { + gsurf->native->destroy(gsurf->native); + free(gsurf); + return NULL; + } + + gsurf->render_att = (!gconf->native->mode.doubleBufferMode) ? + NATIVE_ATTACHMENT_FRONT_LEFT : NATIVE_ATTACHMENT_BACK_LEFT; + + return &gsurf->base; +} + +/** + * Destroy a surface. + */ +static void +destroy_surface(_EGLDisplay *dpy, _EGLSurface *surf) +{ + struct egl_g3d_surface *gsurf = egl_g3d_surface(surf); + + /* FIXME a surface might live longer than its display */ + if (!dpy->Initialized) + _eglLog(_EGL_FATAL, "destroy a surface with an unitialized display"); + + pipe_surface_reference(&gsurf->render_surface, NULL); + gsurf->native->destroy(gsurf->native); + free(gsurf); +} + +static EGLBoolean +egl_g3d_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf) +{ + if (!_eglIsSurfaceBound(surf)) + destroy_surface(dpy, surf); + return EGL_TRUE; +} + +static EGLBoolean +egl_g3d_make_current(_EGLDriver *drv, _EGLDisplay *dpy, + _EGLSurface *draw, _EGLSurface *read, _EGLContext *ctx) +{ + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + struct egl_g3d_surface *gdraw = egl_g3d_surface(draw); + struct egl_g3d_context *old_gctx; + EGLBoolean ok = EGL_TRUE; + + /* bind the new context and return the "orphaned" one */ + if (!_eglBindContext(&ctx, &draw, &read)) + return EGL_FALSE; + old_gctx = egl_g3d_context(ctx); + + if (old_gctx) { + /* flush old context */ + old_gctx->stapi->st_flush(old_gctx->st_ctx, + PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL); + + /* + * The old context is no longer current, and egl_g3d_realloc_context() + * should be called to destroy the framebuffers. However, it is possible + * that it will be made current again with the same draw/read surfaces. + * It might be better to keep it around. + */ + } + + if (gctx) { + ok = egl_g3d_realloc_context(dpy, &gctx->base); + if (ok) { + ok = gctx->stapi->st_make_current(gctx->st_ctx, + gctx->draw.st_fb, gctx->read.st_fb); + if (ok) { + egl_g3d_validate_context(dpy, &gctx->base); + if (gdraw->base.Type == EGL_WINDOW_BIT) { + gctx->base.WindowRenderBuffer = + (gdraw->render_att == NATIVE_ATTACHMENT_FRONT_LEFT) ? + EGL_SINGLE_BUFFER : EGL_BACK_BUFFER; + } + } + } + } + else if (old_gctx) { + ok = old_gctx->stapi->st_make_current(NULL, NULL, NULL); + old_gctx->base.WindowRenderBuffer = EGL_NONE; + } + + if (ctx && !_eglIsContextLinked(ctx)) + destroy_context(dpy, ctx); + if (draw && !_eglIsSurfaceLinked(draw)) + destroy_surface(dpy, draw); + if (read && read != draw && !_eglIsSurfaceLinked(read)) + destroy_surface(dpy, read); + + return ok; +} + +static EGLBoolean +egl_g3d_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf) +{ + struct egl_g3d_surface *gsurf = egl_g3d_surface(surf); + _EGLContext *ctx = _eglGetCurrentContext(); + struct egl_g3d_context *gctx = NULL; + + /* no-op for pixmap or pbuffer surface */ + if (gsurf->base.Type == EGL_PIXMAP_BIT || + gsurf->base.Type == EGL_PBUFFER_BIT) + return EGL_TRUE; + + /* or when the surface is single-buffered */ + if (gsurf->render_att == NATIVE_ATTACHMENT_FRONT_LEFT) + return EGL_TRUE; + + if (ctx && ctx->DrawSurface == surf) + gctx = egl_g3d_context(ctx); + + /* flush if the surface is current */ + if (gctx) + gctx->stapi->st_notify_swapbuffers(gctx->draw.st_fb); + + /* + * We drew on the back buffer, unless there was no back buffer. + * In that case, we drew on the front buffer. Either case, we call + * swap_buffers. + */ + if (!gsurf->native->swap_buffers(gsurf->native)) + return EGL_FALSE; + + if (gctx) { + struct egl_g3d_config *gconf = egl_g3d_config(gsurf->base.Config); + + /* force validation if the swap method is not copy */ + if (gconf->native->mode.swapMethod != GLX_SWAP_COPY_OML) { + gctx->force_validate = EGL_TRUE; + egl_g3d_validate_context(dpy, &gctx->base); + } + } + + return EGL_TRUE; +} + +/** + * Find a config that supports the pixmap. + */ +static _EGLConfig * +find_pixmap_config(_EGLDisplay *dpy, EGLNativePixmapType pix) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + struct egl_g3d_config *gconf; + EGLint i; + + for (i = 0; i < dpy->NumConfigs; i++) { + gconf = egl_g3d_config(dpy->Configs[i]); + if (gdpy->native->is_pixmap_supported(gdpy->native, pix, gconf->native)) + break; + } + + return (i < dpy->NumConfigs) ? &gconf->base : NULL; +} + +/** + * Get the pipe surface of the given attachment of the native surface. + */ +static struct pipe_surface * +get_pipe_surface(struct native_display *ndpy, struct native_surface *nsurf, + enum native_attachment natt) +{ + struct pipe_texture *textures[NUM_NATIVE_ATTACHMENTS]; + struct pipe_surface *psurf; + + textures[natt] = NULL; + nsurf->validate(nsurf, 1 << natt, NULL, textures, NULL, NULL); + if (!textures[natt]) + return NULL; + + psurf = ndpy->screen->get_tex_surface(ndpy->screen, textures[natt], + 0, 0, 0, PIPE_BUFFER_USAGE_CPU_WRITE); + pipe_texture_reference(&textures[natt], NULL); + + return psurf; +} + +static EGLBoolean +egl_g3d_copy_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, + EGLNativePixmapType target) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + struct egl_g3d_surface *gsurf = egl_g3d_surface(surf); + _EGLContext *ctx = _eglGetCurrentContext(); + struct egl_g3d_config *gconf; + struct native_surface *nsurf; + struct pipe_screen *screen = gdpy->native->screen; + struct pipe_surface *psurf; + + if (!gsurf->render_surface) + return EGL_TRUE; + + gconf = egl_g3d_config(find_pixmap_config(dpy, target)); + if (!gconf) + return _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCopyBuffers"); + + nsurf = gdpy->native->create_pixmap_surface(gdpy->native, + target, gconf->native); + if (!nsurf) + return _eglError(EGL_BAD_NATIVE_PIXMAP, "eglCopyBuffers"); + + /* flush if the surface is current */ + if (ctx && ctx->DrawSurface == &gsurf->base) { + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + gctx->stapi->st_flush(gctx->st_ctx, + PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL); + } + + psurf = get_pipe_surface(gdpy->native, nsurf, NATIVE_ATTACHMENT_FRONT_LEFT); + if (psurf) { + struct pipe_context pipe; + + /** + * XXX This is hacky. If we might allow the EGLDisplay to create a pipe + * context of its own and use the blitter context for this. + */ + memset(&pipe, 0, sizeof(pipe)); + pipe.screen = screen; + + util_surface_copy(&pipe, FALSE, psurf, 0, 0, + gsurf->render_surface, 0, 0, psurf->width, psurf->height); + + pipe_surface_reference(&psurf, NULL); + nsurf->flush_frontbuffer(nsurf); + } + + nsurf->destroy(nsurf); + + return EGL_TRUE; +} + +static EGLBoolean +egl_g3d_wait_client(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx) +{ + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + gctx->stapi->st_finish(gctx->st_ctx); + return EGL_TRUE; +} + +static EGLBoolean +egl_g3d_wait_native(_EGLDriver *drv, _EGLDisplay *dpy, EGLint engine) +{ + _EGLContext *ctx = _eglGetCurrentContext(); + + if (engine != EGL_CORE_NATIVE_ENGINE) + return _eglError(EGL_BAD_PARAMETER, "eglWaitNative"); + + if (ctx && ctx->DrawSurface) { + struct egl_g3d_surface *gsurf = egl_g3d_surface(ctx->DrawSurface); + gsurf->native->wait(gsurf->native); + } + + return EGL_TRUE; +} + +static _EGLProc +egl_g3d_get_proc_address(_EGLDriver *drv, const char *procname) +{ + struct egl_g3d_driver *gdrv = egl_g3d_driver(drv); + _EGLProc proc; + EGLint i; + + /* in case this is called before a display is initialized */ + egl_g3d_init_st(&gdrv->base); + + for (i = 0; i < NUM_EGL_G3D_STS; i++) { + const struct egl_g3d_st *stapi = gdrv->stapis[i]; + if (stapi) { + proc = (_EGLProc) stapi->st_get_proc_address(procname); + if (proc) + return proc; + } + } + + return (_EGLProc) NULL; +} + +static EGLBoolean +egl_g3d_bind_tex_image(_EGLDriver *drv, _EGLDisplay *dpy, + _EGLSurface *surf, EGLint buffer) +{ + struct egl_g3d_surface *gsurf = egl_g3d_surface(surf); + _EGLContext *ctx = _eglGetAPIContext(EGL_OPENGL_ES_API); + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + enum pipe_format target_format; + int target; + + if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT) + return _eglError(EGL_BAD_SURFACE, "eglBindTexImage"); + if (buffer != EGL_BACK_BUFFER) + return _eglError(EGL_BAD_PARAMETER, "eglBindTexImage"); + if (gsurf->base.BoundToTexture) + return _eglError(EGL_BAD_ACCESS, "eglBindTexImage"); + + switch (gsurf->base.TextureFormat) { + case EGL_TEXTURE_RGB: + target_format = PIPE_FORMAT_R8G8B8_UNORM; + break; + case EGL_TEXTURE_RGBA: + target_format = PIPE_FORMAT_A8R8G8B8_UNORM; + break; + default: + return _eglError(EGL_BAD_MATCH, "eglBindTexImage"); + } + + switch (gsurf->base.TextureTarget) { + case EGL_TEXTURE_2D: + target = ST_TEXTURE_2D; + break; + default: + return _eglError(EGL_BAD_MATCH, "eglBindTexImage"); + } + + /* flush properly if the surface is bound */ + if (gsurf->base.CurrentContext) { + gctx = egl_g3d_context(gsurf->base.CurrentContext); + gctx->stapi->st_flush(gctx->st_ctx, + PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_FRAME, NULL); + } + + if (gctx) { + if (!gsurf->render_surface) + return EGL_FALSE; + + gctx->stapi->st_bind_texture_surface(gsurf->render_surface, + target, gsurf->base.MipmapLevel, target_format); + gsurf->base.BoundToTexture = EGL_TRUE; + } + + return EGL_TRUE; +} + +static EGLBoolean +egl_g3d_release_tex_image(_EGLDriver *drv, _EGLDisplay *dpy, + _EGLSurface *surf, EGLint buffer) +{ + struct egl_g3d_surface *gsurf = egl_g3d_surface(surf); + + if (!gsurf || gsurf->base.Type != EGL_PBUFFER_BIT || + !gsurf->base.BoundToTexture) + return _eglError(EGL_BAD_SURFACE, "eglReleaseTexImage"); + if (buffer != EGL_BACK_BUFFER) + return _eglError(EGL_BAD_PARAMETER, "eglReleaseTexImage"); + + if (gsurf->render_surface) { + _EGLContext *ctx = _eglGetAPIContext(EGL_OPENGL_ES_API); + struct egl_g3d_context *gctx = egl_g3d_context(ctx); + + /* what if the context the surface binds to is no longer current? */ + if (gctx) + gctx->stapi->st_unbind_texture_surface(gsurf->render_surface, + ST_TEXTURE_2D, gsurf->base.MipmapLevel); + } + + gsurf->base.BoundToTexture = EGL_FALSE; + + return EGL_TRUE; +} + +#ifdef EGL_MESA_screen_surface + +static _EGLSurface * +egl_g3d_create_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy, + _EGLConfig *conf, const EGLint *attribs) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + struct egl_g3d_config *gconf = egl_g3d_config(conf); + struct egl_g3d_surface *gsurf; + + gsurf = CALLOC_STRUCT(egl_g3d_surface); + if (!gsurf) { + _eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface"); + return NULL; + } + + if (!_eglInitSurface(drv, &gsurf->base, + EGL_SCREEN_BIT_MESA, conf, attribs)) { + free(gsurf); + return NULL; + } + + gsurf->native = + gdpy->native->modeset->create_scanout_surface(gdpy->native, + gconf->native, gsurf->base.Width, gsurf->base.Height); + if (!gsurf->native) { + free(gsurf); + return NULL; + } + + gsurf->render_att = (!gconf->native->mode.doubleBufferMode) ? + NATIVE_ATTACHMENT_FRONT_LEFT : NATIVE_ATTACHMENT_BACK_LEFT; + + return &gsurf->base; +} + +static EGLBoolean +egl_g3d_show_screen_surface(_EGLDriver *drv, _EGLDisplay *dpy, + _EGLScreen *scr, _EGLSurface *surf, + _EGLMode *mode) +{ + struct egl_g3d_display *gdpy = egl_g3d_display(dpy); + struct egl_g3d_screen *gscr = egl_g3d_screen(scr); + struct egl_g3d_surface *gsurf = egl_g3d_surface(surf); + struct native_surface *nsurf; + const struct native_mode *nmode; + EGLBoolean changed; + + if (gsurf) { + EGLint idx; + + if (!mode) + return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA"); + if (gsurf->base.Type != EGL_SCREEN_BIT_MESA) + return _eglError(EGL_BAD_SURFACE, "eglShowScreenSurfaceMESA"); + if (gsurf->base.Width < mode->Width || gsurf->base.Height < mode->Height) + return _eglError(EGL_BAD_MATCH, + "eglShowSurfaceMESA(surface smaller than mode size)"); + + /* find the index of the mode */ + for (idx = 0; idx < gscr->base.NumModes; idx++) + if (mode == &gscr->base.Modes[idx]) + break; + if (idx >= gscr->base.NumModes) { + return _eglError(EGL_BAD_MODE_MESA, + "eglShowSurfaceMESA(unknown mode)"); + } + + nsurf = gsurf->native; + nmode = gscr->native_modes[idx]; + } + else { + if (mode) + return _eglError(EGL_BAD_MATCH, "eglShowSurfaceMESA"); + + /* disable the screen */ + nsurf = NULL; + nmode = NULL; + } + + /* TODO surface panning by CRTC choosing */ + changed = gdpy->native->modeset->program(gdpy->native, 0, nsurf, + gscr->base.OriginX, gscr->base.OriginY, &gscr->native, 1, nmode); + if (changed) { + gscr->base.CurrentSurface = &gsurf->base; + gscr->base.CurrentMode = mode; + } + + return changed; +} + +#endif /* EGL_MESA_screen_surface */ + +static EGLint +egl_g3d_probe(_EGLDriver *drv, _EGLDisplay *dpy) +{ + struct native_probe *nprobe; + enum native_probe_result res; + EGLint score; + + nprobe = egl_g3d_get_probe(drv, dpy); + res = native_get_probe_result(nprobe); + + switch (res) { + case NATIVE_PROBE_UNKNOWN: + default: + score = 0; + break; + case NATIVE_PROBE_FALLBACK: + score = 40; + break; + case NATIVE_PROBE_SUPPORTED: + score = 50; + break; + case NATIVE_PROBE_EXACT: + score = 100; + break; + } + + return score; +} + +static void +egl_g3d_unload(_EGLDriver *drv) +{ + struct egl_g3d_driver *gdrv = egl_g3d_driver(drv); + + egl_g3d_destroy_probe(drv, NULL); + free(gdrv); +} + +_EGLDriver * +_eglMain(const char *args) +{ + static char driver_name[64]; + struct egl_g3d_driver *gdrv; + + snprintf(driver_name, sizeof(driver_name), + "Gallium/%s", native_get_name()); + + gdrv = CALLOC_STRUCT(egl_g3d_driver); + if (!gdrv) + return NULL; + + _eglInitDriverFallbacks(&gdrv->base); + + gdrv->base.API.Initialize = egl_g3d_initialize; + gdrv->base.API.Terminate = egl_g3d_terminate; + gdrv->base.API.CreateContext = egl_g3d_create_context; + gdrv->base.API.DestroyContext = egl_g3d_destroy_context; + gdrv->base.API.CreateWindowSurface = egl_g3d_create_window_surface; + gdrv->base.API.CreatePixmapSurface = egl_g3d_create_pixmap_surface; + gdrv->base.API.CreatePbufferSurface = egl_g3d_create_pbuffer_surface; + gdrv->base.API.DestroySurface = egl_g3d_destroy_surface; + gdrv->base.API.MakeCurrent = egl_g3d_make_current; + gdrv->base.API.SwapBuffers = egl_g3d_swap_buffers; + gdrv->base.API.CopyBuffers = egl_g3d_copy_buffers; + gdrv->base.API.WaitClient = egl_g3d_wait_client; + gdrv->base.API.WaitNative = egl_g3d_wait_native; + gdrv->base.API.GetProcAddress = egl_g3d_get_proc_address; + + gdrv->base.API.BindTexImage = egl_g3d_bind_tex_image; + gdrv->base.API.ReleaseTexImage = egl_g3d_release_tex_image; + +#ifdef EGL_MESA_screen_surface + gdrv->base.API.CreateScreenSurfaceMESA = egl_g3d_create_screen_surface; + gdrv->base.API.ShowScreenSurfaceMESA = egl_g3d_show_screen_surface; +#endif + + gdrv->base.Name = driver_name; + gdrv->base.Probe = egl_g3d_probe; + gdrv->base.Unload = egl_g3d_unload; + + /* the key is " EGL G3D" */ + gdrv->probe_key = 0x0E61063D; + + return &gdrv->base; +} |