intel / DRI2: When available, use DRI2GetBuffersWithFormat
[mesa.git] / src / mesa / state_tracker / st_texture.c
index 9553b34e317b178980691d1da27dd79931cfaba2..10faa633ea81002c532a088c514f4ba0d6aea0c7 100644 (file)
 
 #include "st_context.h"
 #include "st_format.h"
+#include "st_public.h"
 #include "st_texture.h"
-#include "enums.h"
+#include "st_cb_fbo.h"
+#include "st_inlines.h"
+#include "main/enums.h"
+#include "main/teximage.h"
+#include "main/texstore.h"
 
 #undef Elements  /* fix re-defined macro warning */
 
@@ -36,8 +41,7 @@
 #include "pipe/p_context.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_inlines.h"
-#include "pipe/p_util.h"
-#include "pipe/p_inlines.h"
+#include "util/u_rect.h"
 
 
 #define DBG if(0) printf
@@ -75,7 +79,6 @@ st_texture_create(struct st_context *st,
                  GLuint width0,
                  GLuint height0,
                  GLuint depth0,
-                 GLuint compress_byte,
                   GLuint usage )
 {
    struct pipe_texture pt, *newtex;
@@ -88,7 +91,8 @@ st_texture_create(struct st_context *st,
        _mesa_lookup_enum_by_nr(format), last_level);
 
    assert(format);
-   assert(screen->is_format_supported(screen, format, PIPE_TEXTURE));
+   assert(screen->is_format_supported(screen, format, target, 
+                                      PIPE_TEXTURE_USAGE_SAMPLER, 0));
 
    memset(&pt, 0, sizeof(pt));
    pt.target = target;
@@ -97,23 +101,19 @@ st_texture_create(struct st_context *st,
    pt.width[0] = width0;
    pt.height[0] = height0;
    pt.depth[0] = depth0;
-   pt.compressed = compress_byte ? 1 : 0;
-   pt.cpp = pt.compressed ? compress_byte : st_sizeof_format(format);
+   pf_get_block(format, &pt.block);
    pt.tex_usage = usage;
 
    newtex = screen->texture_create(screen, &pt);
 
-   assert(!newtex || newtex->refcount == 1);
+   assert(!newtex || pipe_is_referenced(&newtex->reference));
 
    return newtex;
 }
 
 
 /**
- * Check if a texture image be pulled into a unified mipmap texture.
- * This mirrors the completeness test in a lot of ways.
- *
- * Not sure whether I want to pass gl_texture_image here.
+ * Check if a texture image can be pulled into a unified mipmap texture.
  */
 GLboolean
 st_texture_match_image(const struct pipe_texture *pt,
@@ -125,13 +125,13 @@ st_texture_match_image(const struct pipe_texture *pt,
    if (image->Border) 
       return GL_FALSE;
 
-   if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format ||
-       image->IsCompressed != pt->compressed)
+   /* Check if this image's format matches the established texture's format.
+    */
+   if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format)
       return GL_FALSE;
 
-   /* Test image dimensions against the base level image adjusted for
-    * minification.  This will also catch images not present in the
-    * texture, changed targets, etc.
+   /* Test if this image's size matches what's expected in the
+    * established texture.
     */
    if (image->Width != pt->width[level] ||
        image->Height != pt->height[level] ||
@@ -186,19 +186,21 @@ st_texture_image_offset(const struct pipe_texture * pt,
  */
 GLubyte *
 st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
-                    GLuint zoffset,
-                     GLuint flags )
+                    GLuint zoffset, enum pipe_transfer_usage usage,
+                     GLuint x, GLuint y, GLuint w, GLuint h)
 {
-   struct pipe_screen *screen = st->pipe->screen;
+   struct pipe_context *pipe = st->pipe;
+   struct pipe_screen *screen = pipe->screen;
    struct pipe_texture *pt = stImage->pt;
+
    DBG("%s \n", __FUNCTION__);
 
-   stImage->surface = screen->get_tex_surface(screen, pt, stImage->face,
-                                              stImage->level, zoffset, 
-                                              flags);
+   stImage->transfer = st_no_flush_get_tex_transfer(st, pt, stImage->face,
+                                                   stImage->level, zoffset,
+                                                   usage, x, y, w, h);
 
-   if (stImage->surface)
-      return screen->surface_map(screen, stImage->surface, flags);
+   if (stImage->transfer)
+      return screen->transfer_map(screen, stImage->transfer);
    else
       return NULL;
 }
@@ -212,9 +214,9 @@ st_texture_image_unmap(struct st_context *st,
 
    DBG("%s\n", __FUNCTION__);
 
-   screen->surface_unmap(screen, stImage->surface);
+   screen->transfer_unmap(screen, stImage->transfer);
 
-   pipe_surface_reference(&stImage->surface, NULL);
+   screen->tex_transfer_destroy(stImage->transfer);
 }
 
 
@@ -229,59 +231,61 @@ st_texture_image_unmap(struct st_context *st,
  */
 static void
 st_surface_data(struct pipe_context *pipe,
-               struct pipe_surface *dst,
+               struct pipe_transfer *dst,
                unsigned dstx, unsigned dsty,
-               const void *src, unsigned src_pitch,
+               const void *src, unsigned src_stride,
                unsigned srcx, unsigned srcy, unsigned width, unsigned height)
 {
    struct pipe_screen *screen = pipe->screen;
-   void *map = screen->surface_map(screen, dst, PIPE_BUFFER_USAGE_CPU_WRITE);
+   void *map = screen->transfer_map(screen, dst);
 
    pipe_copy_rect(map,
-                  dst->cpp,
-                  dst->pitch,
-                  dstx, dsty, width, height, src, src_pitch, srcx, srcy);
-
-   screen->surface_unmap(screen, dst);
+                  &dst->block,
+                  dst->stride,
+                  dstx, dsty, 
+                  width, height, 
+                  src, src_stride, 
+                  srcx, srcy);
+
+   screen->transfer_unmap(screen, dst);
 }
 
 
 /* Upload data for a particular image.
  */
 void
-st_texture_image_data(struct pipe_context *pipe,
+st_texture_image_data(struct st_context *st,
                       struct pipe_texture *dst,
                       GLuint face,
                       GLuint level,
                       void *src,
-                      GLuint src_row_pitch, GLuint src_image_pitch)
+                      GLuint src_row_stride, GLuint src_image_stride)
 {
+   struct pipe_context *pipe = st->pipe;
    struct pipe_screen *screen = pipe->screen;
    GLuint depth = dst->depth[level];
    GLuint i;
-   GLuint height = 0;
    const GLubyte *srcUB = src;
-   struct pipe_surface *dst_surface;
+   struct pipe_transfer *dst_transfer;
 
    DBG("%s\n", __FUNCTION__);
-   for (i = 0; i < depth; i++) {
-      height = dst->height[level];
-      if(dst->compressed)
-        height /= 4;
 
-      dst_surface = screen->get_tex_surface(screen, dst, face, level, i,
-                                            PIPE_BUFFER_USAGE_CPU_WRITE);
+   for (i = 0; i < depth; i++) {
+      dst_transfer = st_no_flush_get_tex_transfer(st, dst, face, level, i,
+                                                 PIPE_TRANSFER_WRITE, 0, 0,
+                                                 dst->width[level],
+                                                 dst->height[level]);
 
-      st_surface_data(pipe, dst_surface,
+      st_surface_data(pipe, dst_transfer,
                      0, 0,                             /* dstx, dsty */
                      srcUB,
-                     src_row_pitch,
+                     src_row_stride,
                      0, 0,                             /* source x, y */
-                     dst->width[level], height);       /* width, height */
+                     dst->width[level], dst->height[level]);       /* width, height */
 
-      screen->tex_surface_release(screen, &dst_surface);
+      screen->tex_transfer_destroy(dst_transfer);
 
-      srcUB += src_image_pitch * dst->cpp;
+      srcUB += src_image_stride;
    }
 }
 
@@ -302,9 +306,6 @@ st_texture_image_copy(struct pipe_context *pipe,
    struct pipe_surface *dst_surface;
    GLuint i;
 
-   /* XXX this is a hack */
-   const GLuint copyHeight = dst->compressed ? height / 4 : height;
-
    for (i = 0; i < depth; i++) {
       GLuint srcLevel;
 
@@ -341,14 +342,164 @@ st_texture_image_copy(struct pipe_context *pipe,
                                             PIPE_BUFFER_USAGE_GPU_READ);
 
       pipe->surface_copy(pipe,
-                         FALSE,
                         dst_surface,
                         0, 0, /* destX, Y */
                         src_surface,
                         0, 0, /* srcX, Y */
-                        width, copyHeight);
+                        width, height);
+
+      pipe_surface_reference(&src_surface, NULL);
+      pipe_surface_reference(&dst_surface, NULL);
+   }
+}
+
+/** Bind a pipe surface for use as a texture image */
+int
+st_set_teximage(struct pipe_texture *pt, int target)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   const GLuint unit = ctx->Texture.CurrentUnit;
+   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   struct st_texture_image *stImage;
+   int internalFormat;
+
+   switch (pt->format) {
+   case PIPE_FORMAT_A8R8G8B8_UNORM:
+      internalFormat = GL_RGBA8;
+      break;
+   default:
+      return 0;
+   };
+
+   switch (target) {
+   case ST_TEXTURE_2D:
+      target = GL_TEXTURE_2D;
+      break;
+   case ST_TEXTURE_RECT:
+      target = GL_TEXTURE_RECTANGLE_ARB;
+      break;
+   default:
+      return 0;
+   }
+
+   texObj = _mesa_select_tex_object(ctx, texUnit, target);
+   texImage = _mesa_get_tex_image(ctx, texObj, target, 0);
+   stImage = st_texture_image(texImage);
+   
+   _mesa_init_teximage_fields(ctx, GL_TEXTURE_2D, texImage, pt->width[0],
+                              pt->height[0], 1, 0, internalFormat);
+
+   texImage->TexFormat = st_ChooseTextureFormat(ctx, internalFormat, GL_RGBA,
+                                                GL_UNSIGNED_BYTE);
+   _mesa_set_fetch_functions(texImage, 2);
+
+   pipe_texture_reference(&stImage->pt, pt);
+
+   return 1;
+}
+
+/** Redirect rendering into stfb's surface to a texture image */
+int
+st_bind_teximage(struct st_framebuffer *stfb, uint surfIndex,
+                 int target, int format, int level)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct st_context *st = ctx->st;
+   struct pipe_context *pipe = st->pipe;
+   struct pipe_screen *screen = pipe->screen;
+   const GLuint unit = ctx->Texture.CurrentUnit;
+   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+   struct gl_texture_object *texObj;
+   struct gl_texture_image *texImage;
+   struct st_texture_image *stImage;
+   struct st_renderbuffer *strb;
+   GLint face = 0, slice = 0;
+
+   assert(surfIndex <= ST_SURFACE_DEPTH);
+
+   strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
+
+   if (strb->texture_save || strb->surface_save) {
+      /* Error! */
+      return 0;
+   }
+
+   if (target == ST_TEXTURE_2D) {
+      texObj = texUnit->CurrentTex[TEXTURE_2D_INDEX];
+      texImage = _mesa_get_tex_image(ctx, texObj, GL_TEXTURE_2D, level);
+      stImage = st_texture_image(texImage);
+   }
+   else {
+      /* unsupported target */
+      return 0;
+   }
+
+   st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+
+   /* save the renderbuffer's surface/texture info */
+   pipe_texture_reference(&strb->texture_save, strb->texture);
+   pipe_surface_reference(&strb->surface_save, strb->surface);
+
+   /* plug in new surface/texture info */
+   pipe_texture_reference(&strb->texture, stImage->pt);
+   strb->surface = screen->get_tex_surface(screen, strb->texture,
+                                           face, level, slice,
+                                           (PIPE_BUFFER_USAGE_GPU_READ |
+                                            PIPE_BUFFER_USAGE_GPU_WRITE));
+
+   st->dirty.st |= ST_NEW_FRAMEBUFFER;
+
+   return 1;
+}
 
-      screen->tex_surface_release(screen, &src_surface);
-      screen->tex_surface_release(screen, &dst_surface);
+
+/** Undo surface-to-texture binding */
+int
+st_release_teximage(struct st_framebuffer *stfb, uint surfIndex,
+                    int target, int format, int level)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct st_context *st = ctx->st;
+   struct st_renderbuffer *strb;
+
+   assert(surfIndex <= ST_SURFACE_DEPTH);
+
+   strb = st_renderbuffer(stfb->Base.Attachment[surfIndex].Renderbuffer);
+
+   if (!strb->texture_save || !strb->surface_save) {
+      /* Error! */
+      return 0;
    }
+
+   st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
+
+   /* free tex surface, restore original */
+   pipe_surface_reference(&strb->surface, strb->surface_save);
+   pipe_texture_reference(&strb->texture, strb->texture_save);
+
+   pipe_surface_reference(&strb->surface_save, NULL);
+   pipe_texture_reference(&strb->texture_save, NULL);
+
+   st->dirty.st |= ST_NEW_FRAMEBUFFER;
+
+   return 1;
+}
+
+void
+st_teximage_flush_before_map(struct st_context *st,
+                            struct pipe_texture *pt,
+                            unsigned int face,
+                            unsigned int level,
+                            enum pipe_transfer_usage usage)
+{
+   struct pipe_context *pipe = st->pipe;
+   unsigned referenced =
+      pipe->is_texture_referenced(pipe, pt, face, level);
+
+   if (referenced && ((referenced & PIPE_REFERENCED_FOR_WRITE) ||
+                     usage == PIPE_TRANSFER_WRITE ||
+                     usage == PIPE_TRANSFER_READ_WRITE))
+      st_flush(st, PIPE_FLUSH_RENDER_CACHE, NULL);
 }