1 files changed, 416 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/vega/vg_tracker.c b/src/gallium/state_trackers/vega/vg_tracker.c
new file mode 100644
index 0000000000..56cc60aebe
--- /dev/null
+++ b/src/gallium/state_trackers/vega/vg_tracker.c
@@ -0,0 +1,416 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.  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 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 VMWARE AND/OR ITS 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.
+ *
+ **************************************************************************/
+
+#include "vg_context.h"
+#include "vg_tracker.h"
+#include "mask.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_screen.h"
+#include "util/u_memory.h"
+#include "util/u_math.h"
+
+static struct pipe_texture *
+create_texture(struct pipe_context *pipe, enum pipe_format format,
+               VGint width, VGint height)
+{
+   struct pipe_texture templ;
+
+   memset(&templ, 0, sizeof(templ));
+
+   if (format != PIPE_FORMAT_NONE) {
+      templ.format = format;
+   }
+   else {
+      templ.format = PIPE_FORMAT_A8R8G8B8_UNORM;
+   }
+
+   templ.target = PIPE_TEXTURE_2D;
+   pf_get_block(templ.format, &templ.block);
+   templ.width[0] = width;
+   templ.height[0] = height;
+   templ.depth[0] = 1;
+   templ.last_level = 0;
+
+   if (pf_get_component_bits(format, PIPE_FORMAT_COMP_S)) {
+      templ.tex_usage = PIPE_TEXTURE_USAGE_DEPTH_STENCIL;
+   } else {
+      templ.tex_usage = (PIPE_TEXTURE_USAGE_DISPLAY_TARGET |
+                         PIPE_TEXTURE_USAGE_RENDER_TARGET |
+                         PIPE_TEXTURE_USAGE_SAMPLER);
+   }
+
+   return pipe->screen->texture_create(pipe->screen, &templ);
+}
+
+/**
+ * Allocate a renderbuffer for a an on-screen window (not a user-created
+ * renderbuffer).  The window system code determines the format.
+ */
+static struct st_renderbuffer *
+st_new_renderbuffer_fb(enum pipe_format format)
+{
+   struct st_renderbuffer *strb;
+
+   strb = CALLOC_STRUCT(st_renderbuffer);
+   if (!strb) {
+      /*_vega_error(NULL, VG_OUT_OF_MEMORY, "creating renderbuffer");*/
+      return NULL;
+   }
+
+   strb->format = format;
+
+   return strb;
+}
+
+
+/**
+ * This is called to allocate the original drawing surface, and
+ * during window resize.
+ */
+static VGboolean
+st_renderbuffer_alloc_storage(struct vg_context * ctx,
+                              struct st_renderbuffer *strb,
+                              VGuint width, VGuint height)
+{
+   struct pipe_context *pipe = ctx->pipe;
+   unsigned surface_usage;
+
+   /* Free the old surface and texture
+    */
+   pipe_surface_reference(&strb->surface, NULL);
+   pipe_texture_reference(&strb->texture, NULL);
+
+
+   /* Probably need dedicated flags for surface usage too:
+    */
+   surface_usage = (PIPE_BUFFER_USAGE_GPU_READ  |
+                    PIPE_BUFFER_USAGE_GPU_WRITE);
+
+   strb->texture = create_texture(pipe, strb->format,
+                                  width, height);
+
+   if (!strb->texture)
+      return FALSE;
+
+   strb->surface = pipe->screen->get_tex_surface(pipe->screen,
+                                                 strb->texture,
+                                                 0, 0, 0,
+                                                 surface_usage);
+   strb->width = width;
+   strb->height = height;
+
+   assert(strb->surface->width == width);
+   assert(strb->surface->height == height);
+
+   return strb->surface != NULL;
+}
+
+struct vg_context * st_create_context(struct pipe_context *pipe,
+                                      const void *visual,
+                                      struct vg_context *share)
+{
+   struct vg_context *ctx = vg_create_context(pipe, visual, share);
+   /*debug_printf("--------- CREATE CONTEXT %p\n", ctx);*/
+   return ctx;
+}
+
+void st_destroy_context(struct vg_context *st)
+{
+   /*debug_printf("--------- DESTROY CONTEXT %p\n", st);*/
+   vg_destroy_context(st);
+}
+
+void st_copy_context_state(struct vg_context *dst, struct vg_context *src,
+                           uint mask)
+{
+   fprintf(stderr, "FIXME: %s\n", __FUNCTION__);
+}
+
+void st_get_framebuffer_dimensions(struct st_framebuffer *stfb,
+				   uint *width,
+				   uint *height)
+{
+   *width = stfb->strb->width;
+   *height = stfb->strb->height;
+}
+
+struct st_framebuffer * st_create_framebuffer(const void *visual,
+                                              enum pipe_format colorFormat,
+                                              enum pipe_format depthFormat,
+                                              enum pipe_format stencilFormat,
+                                              uint width, uint height,
+                                              void *privateData)
+{
+   struct st_framebuffer *stfb = CALLOC_STRUCT(st_framebuffer);
+   if (stfb) {
+      struct st_renderbuffer *rb =
+         st_new_renderbuffer_fb(colorFormat);
+      stfb->strb = rb;
+#if 0
+      if (doubleBuffer) {
+         struct st_renderbuffer *rb =
+            st_new_renderbuffer_fb(colorFormat);
+      }
+#endif
+
+      /* we want to combine the depth/stencil */
+      if (stencilFormat == depthFormat)
+         stfb->dsrb = st_new_renderbuffer_fb(stencilFormat);
+      else
+         stfb->dsrb = st_new_renderbuffer_fb(PIPE_FORMAT_S8Z24_UNORM);
+
+      /*### currently we always allocate it but it's possible it's
+        not necessary if EGL_ALPHA_MASK_SIZE was 0
+      */
+      stfb->alpha_mask = 0;
+
+      stfb->init_width = width;
+      stfb->init_height = height;
+      stfb->privateData = privateData;
+   }
+
+   return stfb;
+}
+
+static void setup_new_alpha_mask(struct vg_context *ctx,
+                                 struct st_framebuffer *stfb,
+                                 uint width, uint height)
+{
+   struct pipe_context *pipe = ctx->pipe;
+   struct pipe_texture *old_texture = stfb->alpha_mask;
+
+   /*
+     we use PIPE_FORMAT_A8R8G8B8_UNORM because we want to render to
+     this texture and use it as a sampler, so while this wastes some
+     space it makes both of those a lot simpler
+   */
+   stfb->alpha_mask =
+      create_texture(pipe, PIPE_FORMAT_A8R8G8B8_UNORM, width, height);
+
+   if (!stfb->alpha_mask) {
+      if (old_texture)
+         pipe_texture_reference(&old_texture, NULL);
+      return;
+   }
+
+   vg_validate_state(ctx);
+
+   /* alpha mask starts with 1.f alpha */
+   mask_fill(0, 0, width, height, 1.f);
+
+   /* if we had an old surface copy it over */
+   if (old_texture) {
+      struct pipe_surface *surface = pipe->screen->get_tex_surface(
+         pipe->screen,
+         stfb->alpha_mask,
+         0, 0, 0,
+         PIPE_BUFFER_USAGE_GPU_WRITE);
+      struct pipe_surface *old_surface = pipe->screen->get_tex_surface(
+         pipe->screen,
+         old_texture,
+         0, 0, 0,
+         PIPE_BUFFER_USAGE_GPU_READ);
+      pipe->surface_copy(pipe,
+                         surface,
+                         0, 0,
+                         old_surface,
+                         0, 0,
+                         MIN2(old_surface->width, width),
+                         MIN2(old_surface->height, height));
+      if (surface)
+         pipe_surface_reference(&surface, NULL);
+      if (old_surface)
+         pipe_surface_reference(&old_surface, NULL);
+   }
+
+   /* Free the old texture
+    */
+   if (old_texture)
+      pipe_texture_reference(&old_texture, NULL);
+}
+
+void st_resize_framebuffer(struct st_framebuffer *stfb,
+                           uint width, uint height)
+{
+   struct vg_context *ctx = vg_current_context();
+   struct st_renderbuffer *strb = stfb->strb;
+   struct pipe_framebuffer_state *state;
+
+   if (!ctx)
+      return;
+
+   state = &ctx->state.g3d.fb;
+
+   /* If this is a noop, exit early and don't do the clear, etc below.
+    */
+   if (strb->width == width &&
+       strb->height == height &&
+       state->zsbuf)
+      return;
+
+   if (strb->width != width || strb->height != height)
+      st_renderbuffer_alloc_storage(ctx, strb,
+                                 width, height);
+
+   if (stfb->dsrb->width != width || stfb->dsrb->height != height)
+      st_renderbuffer_alloc_storage(ctx, stfb->dsrb,
+                                 width, height);
+
+   {
+      VGuint i;
+
+      memset(state, 0, sizeof(struct pipe_framebuffer_state));
+
+      state->width  = width;
+      state->height = height;
+
+      state->nr_cbufs = 1;
+      state->cbufs[0] = strb->surface;
+      for (i = 1; i < PIPE_MAX_COLOR_BUFS; ++i)
+         state->cbufs[i] = 0;
+
+      state->zsbuf = stfb->dsrb->surface;
+
+      cso_set_framebuffer(ctx->cso_context, state);
+   }
+
+   ctx->state.dirty |= VIEWPORT_DIRTY;
+   ctx->state.dirty |= DEPTH_STENCIL_DIRTY;/*to reset the scissors*/
+
+   ctx->pipe->clear(ctx->pipe, PIPE_CLEAR_DEPTHSTENCIL,
+                    NULL, 0.0, 0);
+
+   /* we need all the other state already set */
+
+   setup_new_alpha_mask(ctx, stfb, width, height);
+
+   pipe_texture_reference( &stfb->blend_texture, NULL );
+   stfb->blend_texture = create_texture(ctx->pipe, PIPE_FORMAT_A8R8G8B8_UNORM,
+                                        width, height);
+}
+
+void st_set_framebuffer_surface(struct st_framebuffer *stfb,
+                                uint surfIndex, struct pipe_surface *surf)
+{
+   struct st_renderbuffer *rb = stfb->strb;
+
+   /* unreference existing surfaces */
+   pipe_surface_reference( &rb->surface, NULL );
+   pipe_texture_reference( &rb->texture, NULL );
+
+   /* reference new ones */
+   pipe_surface_reference( &rb->surface, surf );
+   pipe_texture_reference( &rb->texture, surf->texture );
+
+   rb->width  = surf->width;
+   rb->height = surf->height;
+}
+
+int st_get_framebuffer_surface(struct st_framebuffer *stfb,
+                               uint surfIndex, struct pipe_surface **surf)
+{
+   struct st_renderbuffer *rb = stfb->strb;
+   *surf = rb->surface;
+   return VG_TRUE;
+}
+
+int st_get_framebuffer_texture(struct st_framebuffer *stfb,
+                               uint surfIndex, struct pipe_texture **tex)
+{
+   struct st_renderbuffer *rb = stfb->strb;
+   *tex = rb->texture;
+   return VG_TRUE;
+}
+
+void * st_framebuffer_private(struct st_framebuffer *stfb)
+{
+   return stfb->privateData;
+}
+
+void st_unreference_framebuffer(struct st_framebuffer *stfb)
+{
+   /* FIXME */
+}
+
+void st_make_current(struct vg_context *st,
+                     struct st_framebuffer *draw,
+                     struct st_framebuffer *read)
+{
+   vg_set_current_context(st);
+   if (st) {
+      st->draw_buffer = draw;
+   }
+}
+
+struct vg_context *st_get_current(void)
+{
+   return vg_current_context();
+}
+
+void st_flush(struct vg_context *st, uint pipeFlushFlags,
+              struct pipe_fence_handle **fence)
+{
+   st->pipe->flush(st->pipe, pipeFlushFlags, fence);
+}
+
+void st_finish(struct vg_context *st)
+{
+   struct pipe_fence_handle *fence = NULL;
+
+   st_flush(st, PIPE_FLUSH_RENDER_CACHE, &fence);
+
+   st->pipe->screen->fence_finish(st->pipe->screen, fence, 0);
+   st->pipe->screen->fence_reference(st->pipe->screen, &fence, NULL);
+}
+
+void st_notify_swapbuffers(struct st_framebuffer *stfb)
+{
+   struct vg_context *ctx = vg_current_context();
+   if (ctx && ctx->draw_buffer == stfb) {
+      st_flush(ctx,
+	       PIPE_FLUSH_RENDER_CACHE | 
+	       PIPE_FLUSH_SWAPBUFFERS |
+	       PIPE_FLUSH_FRAME,
+               NULL);
+   }
+}
+
+void st_notify_swapbuffers_complete(struct st_framebuffer *stfb)
+{
+}
+
+int st_bind_texture_surface(struct pipe_surface *ps, int target, int level,
+                            enum pipe_format format)
+{
+   return 0;
+}
+
+int st_unbind_texture_surface(struct pipe_surface *ps, int target, int level)
+{
+   return 0;
+}