diff options
Diffstat (limited to 'src/gallium/state_trackers/dri/dri_st_api.c')
| -rw-r--r-- | src/gallium/state_trackers/dri/dri_st_api.c | 442 |
1 files changed, 442 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/dri/dri_st_api.c b/src/gallium/state_trackers/dri/dri_st_api.c new file mode 100644 index 00000000000..379515152e8 --- /dev/null +++ b/src/gallium/state_trackers/dri/dri_st_api.c @@ -0,0 +1,442 @@ +/* + * Mesa 3-D graphics library + * Version: 7.9 + * + * Copyright (C) 2010 LunarG Inc. + * + * 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. + * + * Authors: + * Chia-I Wu <[email protected]> + */ + +#include "util/u_memory.h" +#include "util/u_inlines.h" +#include "util/u_format.h" +#include "util/u_debug.h" +#include "state_tracker/drm_api.h" +#include "state_tracker/st_manager.h" /* for st_manager_create_api */ + +#include "dri_screen.h" +#include "dri_context.h" +#include "dri_drawable.h" +#include "dri_st_api.h" +#include "dri1.h" + +static struct { + int32_t refcnt; + struct st_api *stapi; +} dri_st_api; + +/** + * Get the format of an attachment. + */ +static INLINE enum pipe_format +dri_drawable_get_format(struct dri_drawable *drawable, + enum st_attachment_type statt) +{ + enum pipe_format format; + + switch (statt) { + case ST_ATTACHMENT_FRONT_LEFT: + case ST_ATTACHMENT_BACK_LEFT: + case ST_ATTACHMENT_FRONT_RIGHT: + case ST_ATTACHMENT_BACK_RIGHT: + format = drawable->stvis.color_format; + break; + case ST_ATTACHMENT_DEPTH_STENCIL: + format = drawable->stvis.depth_stencil_format; + break; + default: + format = PIPE_FORMAT_NONE; + break; + } + + return format; +} + +/** + * Process __DRIbuffer and convert them into pipe_textures. + */ +static void +dri_drawable_process_buffers(struct dri_drawable *drawable, + __DRIbuffer *buffers, unsigned count) +{ + struct dri_screen *screen = dri_screen(drawable->sPriv); + __DRIdrawable *dri_drawable = drawable->dPriv; + struct pipe_texture templ; + struct winsys_handle whandle; + boolean have_depth = FALSE; + unsigned i; + + if (drawable->old_num == count && + drawable->old_w == dri_drawable->w && + drawable->old_h == dri_drawable->h && + memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0) + return; + + for (i = 0; i < ST_ATTACHMENT_COUNT; i++) + pipe_texture_reference(&drawable->textures[i], NULL); + + memset(&templ, 0, sizeof(templ)); + templ.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET; + templ.target = PIPE_TEXTURE_2D; + templ.last_level = 0; + templ.width0 = dri_drawable->w; + templ.height0 = dri_drawable->h; + templ.depth0 = 1; + + memset(&whandle, 0, sizeof(whandle)); + + for (i = 0; i < count; i++) { + __DRIbuffer *buf = &buffers[i]; + enum st_attachment_type statt; + enum pipe_format format; + + switch (buf->attachment) { + case __DRI_BUFFER_FRONT_LEFT: + if (!screen->auto_fake_front) { + statt = ST_ATTACHMENT_INVALID; + break; + } + /* fallthrough */ + case __DRI_BUFFER_FAKE_FRONT_LEFT: + statt = ST_ATTACHMENT_FRONT_LEFT; + break; + case __DRI_BUFFER_BACK_LEFT: + statt = ST_ATTACHMENT_BACK_LEFT; + break; + case __DRI_BUFFER_DEPTH: + case __DRI_BUFFER_DEPTH_STENCIL: + case __DRI_BUFFER_STENCIL: + statt = ST_ATTACHMENT_DEPTH_STENCIL; + /* use only the first depth/stencil buffer */ + if (have_depth) + statt = ST_ATTACHMENT_INVALID; + else + have_depth = TRUE; + break; + default: + statt = ST_ATTACHMENT_INVALID; + break; + } + + format = dri_drawable_get_format(drawable, statt); + if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE) + continue; + + templ.format = format; + whandle.handle = buf->name; + whandle.stride = buf->pitch; + + drawable->textures[statt] = + screen->pipe_screen->texture_from_handle(screen->pipe_screen, + &templ, &whandle); + } + + drawable->old_num = count; + drawable->old_w = dri_drawable->w; + drawable->old_h = dri_drawable->h; + memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count); +} + +/** + * Retrieve __DRIbuffer from the DRI loader. + */ +static __DRIbuffer * +dri_drawable_get_buffers(struct dri_drawable *drawable, + const enum st_attachment_type *statts, + unsigned *count) +{ + __DRIdrawable *dri_drawable = drawable->dPriv; + struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader; + boolean with_format; + __DRIbuffer *buffers; + int num_buffers; + unsigned attachments[8]; + unsigned num_attachments, i; + + assert(loader); + with_format = (loader->base.version > 2 && loader->getBuffersWithFormat); + + num_attachments = 0; + for (i = 0; i < *count; i++) { + enum pipe_format format; + int att; + + format = dri_drawable_get_format(drawable, statts[i]); + if (format == PIPE_FORMAT_NONE) + continue; + + switch (statts[i]) { + case ST_ATTACHMENT_FRONT_LEFT: + att = __DRI_BUFFER_FRONT_LEFT; + break; + case ST_ATTACHMENT_BACK_LEFT: + att = __DRI_BUFFER_BACK_LEFT; + break; + case ST_ATTACHMENT_FRONT_RIGHT: + att = __DRI_BUFFER_FRONT_RIGHT; + break; + case ST_ATTACHMENT_BACK_RIGHT: + att = __DRI_BUFFER_BACK_RIGHT; + break; + case ST_ATTACHMENT_DEPTH_STENCIL: + att = __DRI_BUFFER_DEPTH_STENCIL; + break; + default: + att = -1; + break; + } + + if (att >= 0) { + attachments[num_attachments++] = att; + if (with_format) { + attachments[num_attachments++] = + util_format_get_blocksizebits(format); + } + } + } + + if (with_format) { + num_attachments /= 2; + buffers = loader->getBuffersWithFormat(dri_drawable, + &dri_drawable->w, &dri_drawable->h, + attachments, num_attachments, + &num_buffers, dri_drawable->loaderPrivate); + } + else { + buffers = loader->getBuffers(dri_drawable, + &dri_drawable->w, &dri_drawable->h, + attachments, num_attachments, + &num_buffers, dri_drawable->loaderPrivate); + } + + if (buffers) { + /* set one cliprect to cover the whole dri_drawable */ + dri_drawable->x = 0; + dri_drawable->y = 0; + dri_drawable->backX = 0; + dri_drawable->backY = 0; + dri_drawable->numClipRects = 1; + dri_drawable->pClipRects[0].x1 = 0; + dri_drawable->pClipRects[0].y1 = 0; + dri_drawable->pClipRects[0].x2 = dri_drawable->w; + dri_drawable->pClipRects[0].y2 = dri_drawable->h; + dri_drawable->numBackClipRects = 1; + dri_drawable->pBackClipRects[0].x1 = 0; + dri_drawable->pBackClipRects[0].y1 = 0; + dri_drawable->pBackClipRects[0].x2 = dri_drawable->w; + dri_drawable->pBackClipRects[0].y2 = dri_drawable->h; + + *count = num_buffers; + } + + return buffers; +} + +static boolean +dri_st_framebuffer_validate(struct st_framebuffer_iface *stfbi, + const enum st_attachment_type *statts, + unsigned count, + struct pipe_texture **out) +{ + struct dri_drawable *drawable = + (struct dri_drawable *) stfbi->st_manager_private; + unsigned statt_mask, i; + + statt_mask = 0x0; + for (i = 0; i < count; i++) + statt_mask |= (1 << statts[i]); + + /* + * dPriv->pStamp is the server stamp. It should be accessed with a lock, at + * least for DRI1. dPriv->lastStamp is the client stamp. It has the value + * of the server stamp when last checked. + * + * This function updates the textures and records the stamp of the textures. + */ + if (drawable->texture_stamp != drawable->dPriv->lastStamp || + (statt_mask & ~drawable->texture_mask)) { + if (__dri1_api_hooks) { + /* TODO */ + return FALSE; + } + else { + __DRIbuffer *buffers; + unsigned num_buffers = count; + + buffers = dri_drawable_get_buffers(drawable, statts, &num_buffers); + dri_drawable_process_buffers(drawable, buffers, num_buffers); + } + + drawable->texture_stamp = drawable->dPriv->lastStamp; + drawable->texture_mask = statt_mask; + } + + if (!out) + return TRUE; + + for (i = 0; i < count; i++) { + out[i] = NULL; + pipe_texture_reference(&out[i], drawable->textures[statts[i]]); + } + + return TRUE; +} + +static boolean +dri_st_framebuffer_flush_front(struct st_framebuffer_iface *stfbi, + enum st_attachment_type statt) +{ + struct dri_drawable *drawable = + (struct dri_drawable *) stfbi->st_manager_private; + struct __DRIdri2LoaderExtensionRec *loader = + drawable->sPriv->dri2.loader; + + /* TODO */ + if (__dri1_api_hooks) + return FALSE; + + if (statt == ST_ATTACHMENT_FRONT_LEFT && loader->flushFrontBuffer) { + loader->flushFrontBuffer(drawable->dPriv, + drawable->dPriv->loaderPrivate); + } + + return TRUE; +} + +/** + * Create a framebuffer from the given drawable. + */ +struct st_framebuffer_iface * +dri_create_st_framebuffer(struct dri_drawable *drawable) +{ + struct st_framebuffer_iface *stfbi; + + stfbi = CALLOC_STRUCT(st_framebuffer_iface); + if (stfbi) { + stfbi->visual = &drawable->stvis; + stfbi->flush_front = dri_st_framebuffer_flush_front; + stfbi->validate = dri_st_framebuffer_validate; + stfbi->st_manager_private = (void *) drawable; + } + + return stfbi; +} + +/** + * Destroy a framebuffer. + */ +void +dri_destroy_st_framebuffer(struct st_framebuffer_iface *stfbi) +{ + FREE(stfbi); +} + +/** + * Return the texture at an attachment. Allocate the texture if it does not + * exist. + */ +struct pipe_texture * +dri_get_st_framebuffer_texture(struct st_framebuffer_iface *stfbi, + enum st_attachment_type statt) +{ + struct dri_drawable *drawable = + (struct dri_drawable *) stfbi->st_manager_private; + + if (!(drawable->texture_mask & (1 << statt))) { + enum st_attachment_type statts[ST_ATTACHMENT_COUNT]; + unsigned i, count = 0; + + /* make sure DRI2 does not destroy existing buffers */ + for (i = 0; i < ST_ATTACHMENT_COUNT; i++) { + if (drawable->texture_mask & (1 << i)) { + statts[count++] = i; + } + } + statts[count++] = statt; + + drawable->texture_stamp = drawable->dPriv->lastStamp - 1; + dri_st_framebuffer_validate(stfbi, statts, count, NULL); + } + + return drawable->textures[statt]; +} + +/** + * Add a reference to the st_api of the state tracker. + */ +static void +_dri_get_st_api(void) +{ + p_atomic_inc(&dri_st_api.refcnt); + if (p_atomic_read(&dri_st_api.refcnt) == 1) + dri_st_api.stapi = st_manager_create_api(); +} + +/** + * Remove a reference to the st_api of the state tracker. + */ +static void +_dri_put_st_api(void) +{ + struct st_api *stapi = dri_st_api.stapi; + + if (p_atomic_dec_zero(&dri_st_api.refcnt)) { + stapi->destroy(dri_st_api.stapi); + dri_st_api.stapi = NULL; + } +} + +/** + * Create a state tracker manager from the given screen. + */ +struct st_manager * +dri_create_st_manager(struct dri_screen *screen) +{ + struct st_manager *smapi; + + smapi = CALLOC_STRUCT(st_manager); + if (smapi) { + smapi->screen = screen->pipe_screen; + _dri_get_st_api(); + } + + return smapi; +} + +/** + * Destroy a state tracker manager. + */ +void +dri_destroy_st_manager(struct st_manager *smapi) +{ + _dri_put_st_api(); + FREE(smapi); +} + +/** + * Return the st_api of OpenGL state tracker. + */ +struct st_api * +dri_get_st_api(void) +{ + assert(dri_st_api.stapi); + return dri_st_api.stapi; +} |