Attachment 123124 Details for Bug 95035 – patch for Mesa-11.1.2, v3

patch for Mesa-11.1.2, v3

gallium-osmesa-threadsafe.patch (text/plain), 9.37 KB, created by Frederic Devernay on 2016-04-21 15:45:53 UTC

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Creator: Frederic Devernay

Created: 2016-04-21 15:45:53 UTC

Size: 9.37 KB

patch

obsolete

>--- mesa-11.1.2/src/gallium/state_trackers/osmesa/osmesa.c.orig	2016-04-20 21:34:50.000000000 +0200
>+++ mesa-11.1.2/src/gallium/state_trackers/osmesa/osmesa.c	2016-04-21 17:43:11.000000000 +0200
>@@ -52,6 +52,7 @@
> #include <stdio.h>
> #include "GL/osmesa.h"
> 
>+#include "main/context.h"
> #include "glapi/glapi.h"  /* for OSMesaGetProcAddress below */
> 
> #include "pipe/p_context.h"
>@@ -69,6 +70,7 @@
> 
> #include "state_tracker/st_api.h"
> #include "state_tracker/st_gl_api.h"
>+#include "state_tracker/st_context.h"
> 
> 
> 
>@@ -86,13 +88,13 @@
>    struct pipe_resource *textures[ST_ATTACHMENT_COUNT];
> 
>    void *map;
>-
>-   struct osmesa_buffer *next;  /**< next in linked list */
> };
> 
> 
> struct osmesa_context
> {
>+   struct st_api* api;
>+   struct st_manager* manager;
>    struct st_context_iface *stctx;
> 
>    boolean ever_used;     /*< Has this context ever been current? */
>@@ -114,17 +116,6 @@
> 
> 
> /**
>- * Linked list of all osmesa_buffers.
>- * We can re-use an osmesa_buffer from one OSMesaMakeCurrent() call to
>- * the next unless the color/depth/stencil/accum formats change.
>- * We have to do this to be compatible with the original OSMesa implementation
>- * because some apps call OSMesaMakeCurrent() several times during rendering
>- * a frame.
>- */
>-static struct osmesa_buffer *BufferList = NULL;
>-
>-
>-/**
>  * Called from the ST manager.
>  */
> static int
>@@ -135,39 +126,6 @@
> }
> 
> 
>-/**
>- * Create/return singleton st_api object.
>- */
>-static struct st_api *
>-get_st_api(void)
>-{
>-   static struct st_api *stapi = NULL;
>-   if (!stapi) {
>-      stapi = st_gl_api_create();
>-   }
>-   return stapi;
>-}
>-
>-
>-/**
>- * Create/return a singleton st_manager object.
>- */
>-static struct st_manager *
>-get_st_manager(void)
>-{
>-   static struct st_manager *stmgr = NULL;
>-   if (!stmgr) {
>-      stmgr = CALLOC_STRUCT(st_manager);
>-      if (stmgr) {
>-         stmgr->screen = osmesa_create_screen();
>-         stmgr->get_param = osmesa_st_get_param;
>-         stmgr->get_egl_image = NULL;
>-      }         
>-   }
>-   return stmgr;
>-}
>-
>-
> static inline boolean
> little_endian(void)
> {
>@@ -319,6 +277,11 @@
>    unsigned y, bytes, bpp;
>    int dst_stride;
> 
>+   assert(res);
>+   if (!res) {
>+      return FALSE;
>+   }
>+
>    if (osmesa->pp) {
>       struct pipe_resource *zsbuf = NULL;
>       unsigned i;
>@@ -387,7 +350,8 @@
>                                unsigned count,
>                                struct pipe_resource **out)
> {
>-   struct pipe_screen *screen = get_st_manager()->screen;
>+   OSMesaContext osmesa = stctx->st_manager_private;
>+   struct pipe_screen *screen = osmesa->manager->screen;
>    enum st_attachment_type i;
>    struct osmesa_buffer *osbuffer = stfbi_to_osbuffer(stfbi);
>    struct pipe_resource templat;
>@@ -470,45 +434,18 @@
> 
>       osmesa_init_st_visual(&osbuffer->visual, color_format,
>                             ds_format, accum_format);
>-
>-      /* insert into linked list */
>-      osbuffer->next = BufferList;
>-      BufferList = osbuffer;
>    }
> 
>    return osbuffer;
> }
> 
> 
>-/**
>- * Search linked list for a buffer with matching pixel formats and size.
>- */
>-static struct osmesa_buffer *
>-osmesa_find_buffer(enum pipe_format color_format,
>-                   enum pipe_format ds_format,
>-                   enum pipe_format accum_format,
>-                   GLsizei width, GLsizei height)
>-{
>-   struct osmesa_buffer *b;
>-
>-   /* Check if we already have a suitable buffer for the given formats */
>-   for (b = BufferList; b; b = b->next) {
>-      if (b->visual.color_format == color_format &&
>-          b->visual.depth_stencil_format == ds_format &&
>-          b->visual.accum_format == accum_format &&
>-          b->width == width &&
>-          b->height == height) {
>-         return b;
>-      }
>-   }
>-   return NULL;
>-}
>-
>-
> static void
> osmesa_destroy_buffer(struct osmesa_buffer *osbuffer)
> {
>-   FREE(osbuffer->stfb);
>+   if (osbuffer) {
>+      FREE(osbuffer->stfb);
>+   }
>    FREE(osbuffer);
> }
> 
>@@ -548,7 +485,6 @@
>    struct st_context_iface *st_shared;
>    enum st_context_error st_error = 0;
>    struct st_context_attribs attribs;
>-   struct st_api *stapi = get_st_api();
> 
>    if (sharelist) {
>       st_shared = sharelist->stctx;
>@@ -597,9 +533,21 @@
>                          osmesa->depth_stencil_format,
>                          osmesa->accum_format);
> 
>-   osmesa->stctx = stapi->create_context(stapi, get_st_manager(),
>+   osmesa->api = st_gl_api_create();
>+   osmesa->manager = CALLOC_STRUCT(st_manager);
>+   assert(osmesa->manager);
>+   if (osmesa->manager) {
>+      osmesa->manager->screen = osmesa_create_screen();
>+      osmesa->manager->get_param = osmesa_st_get_param;
>+      osmesa->manager->get_egl_image = NULL;
>+   }
>+
>+   osmesa->stctx = osmesa->api->create_context(osmesa->api, osmesa->manager,
>                                          &attribs, &st_error, st_shared);
>    if (!osmesa->stctx) {
>+      FREE(osmesa->manager);
>+      osmesa->api->destroy(osmesa->api);
>+      osmesa->stctx->destroy(osmesa->stctx);
>       FREE(osmesa);
>       return NULL;
>    }
>@@ -623,7 +571,10 @@
> OSMesaDestroyContext(OSMesaContext osmesa)
> {
>    if (osmesa) {
>+      osmesa_destroy_buffer(osmesa->current_buffer);
>       pp_free(osmesa->pp);
>+      FREE(osmesa->manager);
>+      osmesa->api->destroy(osmesa->api);
>       osmesa->stctx->destroy(osmesa->stctx);
>       FREE(osmesa);
>    }
>@@ -656,14 +607,26 @@
> OSMesaMakeCurrent(OSMesaContext osmesa, void *buffer, GLenum type,
>                   GLsizei width, GLsizei height)
> {
>-   struct st_api *stapi = get_st_api();
>    struct osmesa_buffer *osbuffer;
>    enum pipe_format color_format;
> 
>-   if (!osmesa || !buffer || width < 1 || height < 1) {
>+   if (!osmesa) {
>+      /* make sure the active context is not referenced anymore */
>+      _mesa_make_current(NULL, NULL, NULL);
>       return GL_FALSE;
>    }
> 
>+   if (!buffer || width < 1 || height < 1) {
>+      osmesa->api->make_current(osmesa->api, osmesa->stctx, NULL, NULL);
>+      /* make sure the active buffer is not referenced anymore */
>+      if (osmesa->current_buffer) {
>+         osmesa_destroy_buffer(osmesa->current_buffer);
>+         osmesa->current_buffer = NULL;
>+      }
>+      osmesa->type = 0;
>+      return GL_TRUE;
>+   }
>+
>    if (osmesa->format == OSMESA_RGB_565 && type != GL_UNSIGNED_SHORT_5_6_5) {
>       return GL_FALSE;
>    }
>@@ -678,24 +641,43 @@
>    osbuffer = osmesa_find_buffer(color_format,
>                                  osmesa->depth_stencil_format,
>                                  osmesa->accum_format, width, height);
>-   if (!osbuffer) {
>-      /* Existing buffer found, create new buffer */
>+   osbuffer = osmesa->current_buffer;
>+   /* Try to reuse the osbuffer. */
>+   if (!(osbuffer &&
>+         osbuffer->visual.color_format == color_format &&
>+         osbuffer->visual.depth_stencil_format == osmesa->depth_stencil_format &&
>+         osbuffer->visual.accum_format == osmesa->accum_format &&
>+         osbuffer->width == width &&
>+         osbuffer->height == height)) {
>+      if (osbuffer) {
>+         osmesa_destroy_buffer(osbuffer);
>+      }
>+      /* create new buffer */
>       osbuffer = osmesa_create_buffer(color_format,
>                                       osmesa->depth_stencil_format,
>                                       osmesa->accum_format);
>+      osbuffer->width = width;
>+      osbuffer->height = height;
>+      osmesa->current_buffer = osbuffer;
>+      {
>+         /* st_framebuffer_reuse_or_create() uses pointer comparison to check
>+            if it can reuse the framebuffer!
>+            Since we are realocating the buffer (osmesa_create_buffer() calls
>+            osmesa_create_st_framebuffer()) just after freing it, we may be
>+            unlucky. We thus prefer invalidating the framebuffer manually. */
>+         struct st_context *st = (struct st_context *)osmesa->stctx;
>+         st->ctx->WinSysDrawBuffer = NULL;
>+         st->ctx->WinSysReadBuffer = NULL;
>+      }
>    }
> 
>-   osbuffer->width = width;
>-   osbuffer->height = height;
>    osbuffer->map = buffer;
> 
>-   /* XXX unused for now */
>-   (void) osmesa_destroy_buffer;
>-
>-   osmesa->current_buffer = osbuffer;
>    osmesa->type = type;
> 
>-   stapi->make_current(stapi, osmesa->stctx, osbuffer->stfb, osbuffer->stfb);
>+   osmesa->api->make_current(osmesa->api, osmesa->stctx, osbuffer->stfb, osbuffer->stfb);
>+   /* front-left buffer should have a valid texture at this point */
>+   assert(osbuffer->textures[0]);
> 
>    if (!osmesa->ever_used) {
>       /* one-time init, just postprocessing for now */
>@@ -728,9 +710,8 @@
> GLAPI OSMesaContext GLAPIENTRY
> OSMesaGetCurrentContext(void)
> {
>-   struct st_api *stapi = get_st_api();
>-   struct st_context_iface *st = stapi->get_current(stapi);
>-   return st ? (OSMesaContext) st->st_manager_private : NULL;
>+   struct gl_context *ctx = _mesa_get_current_context();
>+   return ctx ? (OSMesaContext) ctx->st->iface.st_manager_private : NULL;
> }
> 
> 
>@@ -784,7 +765,7 @@
>       /* fall-through */
>    case OSMESA_MAX_HEIGHT:
>       {
>-         struct pipe_screen *screen = get_st_manager()->screen;
>+         struct pipe_screen *screen = osmesa->manager->screen;
>          int maxLevels = screen->get_param(screen,
>                                            PIPE_CAP_MAX_TEXTURE_2D_LEVELS);
>          *value = 1 << (maxLevels - 1);
>@@ -816,6 +797,11 @@
>    struct pipe_transfer *transfer = NULL;
>    struct pipe_box box;
> 
>+   assert(res);
>+   if (!res) {
>+      return GL_FALSE;
>+   }
>+
>    /*
>     * Note: we can't really implement this function with gallium as
>     * we did for swrast.  We can't just map the resource and leave it

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Attachments on bug 95035: 123108 | 123109 | 123120 | 123121 | 123123 | 123124 | 123125

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