Merge branch '7.8' into master
[mesa.git] / src / mesa / state_tracker / st_cb_texture.c
index f01053cdacc0b344c32c56e237ee32c406f7f4dd..84b78181a972d4bbed104f23c2fba449985eed5e 100644 (file)
 #include "main/convolve.h"
 #endif
 #include "main/enums.h"
+#include "main/fbobject.h"
 #include "main/formats.h"
 #include "main/image.h"
 #include "main/imports.h"
 #include "main/macros.h"
 #include "main/mipmap.h"
-#include "main/pixel.h"
 #include "main/texcompress.h"
 #include "main/texfetch.h"
-#include "main/texformat.h"
 #include "main/texgetimage.h"
 #include "main/teximage.h"
 #include "main/texobj.h"
 
 #include "pipe/p_context.h"
 #include "pipe/p_defines.h"
-#include "pipe/p_inlines.h"
+#include "util/u_inlines.h"
 #include "pipe/p_shader_tokens.h"
 #include "util/u_tile.h"
 #include "util/u_blit.h"
 #include "util/u_format.h"
 #include "util/u_surface.h"
+#include "util/u_sampler.h"
 #include "util/u_math.h"
 
 
@@ -124,6 +124,8 @@ st_DeleteTextureObject(GLcontext *ctx,
    struct st_texture_object *stObj = st_texture_object(texObj);
    if (stObj->pt)
       pipe_texture_reference(&stObj->pt, NULL);
+   if (stObj->sampler_view)
+      pipe_sampler_view_reference(&stObj->sampler_view, NULL);
 
    _mesa_delete_texture_object(ctx, texObj);
 }
@@ -313,6 +315,8 @@ guess_and_alloc_texture(struct st_context *st,
                                  depth,
                                  usage);
 
+   stObj->pipe = st->pipe;
+
    DBG("%s - success\n", __FUNCTION__);
 }
 
@@ -372,10 +376,13 @@ compress_with_blit(GLcontext * ctx,
 {
    const GLuint dstImageOffsets[1] = {0};
    struct st_texture_image *stImage = st_texture_image(texImage);
-   struct pipe_screen *screen = ctx->st->pipe->screen;
+   struct pipe_context *pipe = ctx->st->pipe;
+   struct pipe_screen *screen = pipe->screen;
    gl_format mesa_format;
    struct pipe_texture templ;
    struct pipe_texture *src_tex;
+   struct pipe_sampler_view view_templ;
+   struct pipe_sampler_view *src_view;
    struct pipe_surface *dst_surface;
    struct pipe_transfer *tex_xfer;
    void *map;
@@ -422,7 +429,7 @@ compress_with_blit(GLcontext * ctx,
                                             0, 0, 0, /* face, level are zero */
                                             PIPE_TRANSFER_WRITE,
                                             0, 0, width, height); /* x, y, w, h */
-   map = screen->transfer_map(screen, tex_xfer);
+   map = pipe->transfer_map(pipe, tex_xfer);
 
    _mesa_texstore(ctx, 2, GL_RGBA, mesa_format,
                   map,              /* dest ptr */
@@ -434,12 +441,19 @@ compress_with_blit(GLcontext * ctx,
                   pixels,           /* source data */
                   unpack);          /* source data packing */
 
-   screen->transfer_unmap(screen, tex_xfer);
-   screen->tex_transfer_destroy(tex_xfer);
+   pipe->transfer_unmap(pipe, tex_xfer);
+   pipe->tex_transfer_destroy(pipe, tex_xfer);
+
+   /* Create temporary sampler view */
+   u_sampler_view_default_template(&view_templ,
+                                   src_tex,
+                                   src_tex->format);
+   src_view = pipe->create_sampler_view(pipe, src_tex, &view_templ);
+
 
    /* copy / compress image */
    util_blit_pixels_tex(ctx->st->blit,
-                        src_tex,          /* pipe_texture (src) */
+                        src_view,         /* sampler view (src) */
                         0, 0,             /* src x0, y0 */
                         width, height,    /* src x1, y1 */
                         dst_surface,      /* pipe_surface (dst) */
@@ -451,6 +465,7 @@ compress_with_blit(GLcontext * ctx,
 
    pipe_surface_reference(&dst_surface, NULL);
    pipe_texture_reference(&src_tex, NULL);
+   pipe_sampler_view_reference(&src_view, NULL);
 
    return GL_TRUE;
 }
@@ -544,29 +559,28 @@ st_TexImage(GLcontext * ctx,
       _mesa_align_free(texImage->Data);
    }
 
-   if (width == 0 || height == 0 || depth == 0) {
-      /* stop after freeing old image */
-      return;
-   }
-
-   /* If this is the only mipmap level in the texture, could call
-    * bmBufferData with NULL data to free the old block and avoid
-    * waiting on any outstanding fences.
+   /*
+    * See if the new image is somehow incompatible with the existing
+    * mipmap.  If so, free the old mipmap.
     */
    if (stObj->pt) {
       if (stObj->teximage_realloc ||
           level > (GLint) stObj->pt->last_level ||
-          (stObj->pt->last_level == level &&
-           stObj->pt->target != PIPE_TEXTURE_CUBE &&
-           !st_texture_match_image(stObj->pt, &stImage->base,
-                                   stImage->face, stImage->level))) {
+          !st_texture_match_image(stObj->pt, &stImage->base,
+                                  stImage->face, stImage->level)) {
          DBG("release it\n");
          pipe_texture_reference(&stObj->pt, NULL);
          assert(!stObj->pt);
+         pipe_sampler_view_reference(&stObj->sampler_view, NULL);
          stObj->teximage_realloc = FALSE;
       }
    }
 
+   if (width == 0 || height == 0 || depth == 0) {
+      /* stop after freeing old image */
+      return;
+   }
+
    if (!stObj->pt) {
       guess_and_alloc_texture(ctx->st, stObj, stImage);
       if (!stObj->pt) {
@@ -687,9 +701,11 @@ st_TexImage(GLcontext * ctx,
       {
          char *dst = texImage->Data;
          const char *src = pixels;
-         int i;
+         GLuint i, bw, bh, lines;
+         _mesa_get_format_block_size(texImage->TexFormat, &bw, &bh);
+         lines = (height + bh - 1) / bh;
 
-         for(i = 0; i < height; ++i)
+         for(i = 0; i < lines; ++i)
          {
             memcpy(dst, src, srcImageStride);
             dst += dstRowStride;
@@ -810,8 +826,11 @@ decompress_with_blit(GLcontext * ctx, GLenum target, GLint level,
                      struct gl_texture_object *texObj,
                      struct gl_texture_image *texImage)
 {
-   struct pipe_screen *screen = ctx->st->pipe->screen;
+   struct pipe_context *pipe = ctx->st->pipe;
+   struct pipe_screen *screen = pipe->screen;
    struct st_texture_image *stImage = st_texture_image(texImage);
+   struct st_texture_object *stObj = st_texture_object(texObj);
+   struct pipe_sampler_view *src_view = st_get_stobj_sampler_view(stObj);
    const GLuint width = texImage->Width;
    const GLuint height = texImage->Height;
    struct pipe_surface *dst_surface;
@@ -828,7 +847,7 @@ decompress_with_blit(GLcontext * ctx, GLenum target, GLint level,
 
    /* blit/render/decompress */
    util_blit_pixels_tex(ctx->st->blit,
-                        stImage->pt,      /* pipe_texture (src) */
+                        src_view,      /* pipe_texture (src) */
                         0, 0,             /* src x0, y0 */
                         width, height,    /* src x1, y1 */
                         dst_surface,      /* pipe_surface (dst) */
@@ -849,7 +868,7 @@ decompress_with_blit(GLcontext * ctx, GLenum target, GLint level,
    if (st_equal_formats(stImage->pt->format, format, type)) {
       /* memcpy */
       const uint bytesPerRow = width * util_format_get_blocksize(stImage->pt->format);
-      ubyte *map = screen->transfer_map(screen, tex_xfer);
+      ubyte *map = pipe->transfer_map(pipe, tex_xfer);
       GLuint row;
       for (row = 0; row < height; row++) {
          GLvoid *dest = _mesa_image_address2d(&ctx->Pack, pixels, width,
@@ -857,7 +876,7 @@ decompress_with_blit(GLcontext * ctx, GLenum target, GLint level,
          memcpy(dest, map, bytesPerRow);
          map += tex_xfer->stride;
       }
-      screen->transfer_unmap(screen, tex_xfer);
+      pipe->transfer_unmap(pipe, tex_xfer);
    }
    else {
       /* format translation via floats */
@@ -872,7 +891,7 @@ decompress_with_blit(GLcontext * ctx, GLenum target, GLint level,
             debug_printf("%s: fallback format translation\n", __FUNCTION__);
 
          /* get float[4] rgba row from surface */
-         pipe_get_tile_rgba(tex_xfer, 0, row, width, 1, rgba);
+         pipe_get_tile_rgba(pipe, tex_xfer, 0, row, width, 1, rgba);
 
          _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, format,
                                     type, dest, &ctx->Pack, transferOps);
@@ -881,6 +900,8 @@ decompress_with_blit(GLcontext * ctx, GLenum target, GLint level,
 
    _mesa_unmap_pbo_dest(ctx, &ctx->Pack);
 
+   screen->tex_transfer_destroy(tex_xfer);
+
    /* destroy the temp / dest surface */
    util_destroy_rgba_surface(dst_texture, dst_surface);
 }
@@ -1257,7 +1278,6 @@ fallback_copy_texsubimage(GLcontext *ctx, GLenum target, GLint level,
                           GLsizei width, GLsizei height)
 {
    struct pipe_context *pipe = ctx->st->pipe;
-   struct pipe_screen *screen = pipe->screen;
    struct pipe_transfer *src_trans;
    GLvoid *texDest;
    enum pipe_transfer_usage transfer_usage;
@@ -1310,17 +1330,17 @@ fallback_copy_texsubimage(GLcontext *ctx, GLenum target, GLint level,
       /* To avoid a large temp memory allocation, do copy row by row */
       for (row = 0; row < height; row++, srcY += yStep) {
          uint data[MAX_WIDTH];
-         pipe_get_tile_z(src_trans, 0, srcY, width, 1, data);
+         pipe_get_tile_z(pipe, src_trans, 0, srcY, width, 1, data);
          if (scaleOrBias) {
             _mesa_scale_and_bias_depth_uint(ctx, width, data);
          }
-         pipe_put_tile_z(stImage->transfer, 0, row, width, 1, data);
+         pipe_put_tile_z(pipe, stImage->transfer, 0, row, width, 1, data);
       }
    }
    else {
       /* RGBA format */
       GLfloat *tempSrc =
-         (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
+         (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
 
       if (tempSrc && texDest) {
          const GLint dims = 2;
@@ -1336,7 +1356,7 @@ fallback_copy_texsubimage(GLcontext *ctx, GLenum target, GLint level,
          /* XXX this usually involves a lot of int/float conversion.
           * try to avoid that someday.
           */
-         pipe_get_tile_rgba(src_trans, 0, 0, width, height, tempSrc);
+         pipe_get_tile_rgba(pipe, src_trans, 0, 0, width, height, tempSrc);
 
          /* Store into texture memory.
           * Note that this does some special things such as pixel transfer
@@ -1360,41 +1380,72 @@ fallback_copy_texsubimage(GLcontext *ctx, GLenum target, GLint level,
       }
 
       if (tempSrc)
-         _mesa_free(tempSrc);
+         free(tempSrc);
    }
 
    st_texture_image_unmap(ctx->st, stImage);
-   screen->tex_transfer_destroy(src_trans);
+   pipe->tex_transfer_destroy(pipe, src_trans);
 }
 
 
+
+/**
+ * If the format of the src renderbuffer and the format of the dest
+ * texture are compatible (in terms of blitting), return a TGSI writemask
+ * to be used during the blit.
+ * If the src/dest are incompatible, return 0.
+ */
 static unsigned
-compatible_src_dst_formats(const struct gl_renderbuffer *src,
+compatible_src_dst_formats(GLcontext *ctx,
+                           const struct gl_renderbuffer *src,
                            const struct gl_texture_image *dst)
 {
-   const GLenum srcFormat = _mesa_get_format_base_format(src->Format);
-   const GLenum dstLogicalFormat = _mesa_get_format_base_format(dst->TexFormat);
+   /* Get logical base formats for the src and dest.
+    * That is, use the user-requested formats and not the actual, device-
+    * chosen formats.
+    * For example, the user may have requested an A8 texture but the
+    * driver may actually be using an RGBA texture format.  When we
+    * copy/blit to that texture, we only want to copy the Alpha channel
+    * and not the RGB channels.
+    *
+    * Similarly, when the src FBO was created an RGB format may have been
+    * requested but the driver actually chose an RGBA format.  In that case,
+    * we don't want to copy the undefined Alpha channel to the dest texture
+    * (it should be 1.0).
+    */
+   const GLenum srcFormat = _mesa_base_fbo_format(ctx, src->InternalFormat);
+   const GLenum dstFormat = _mesa_base_tex_format(ctx, dst->InternalFormat);
 
-   if (srcFormat == dstLogicalFormat) {
+   /**
+    * XXX when we have red-only and red/green renderbuffers we'll need
+    * to add more cases here (or implement a general-purpose routine that
+    * queries the existance of the R,G,B,A channels in the src and dest).
+    */
+   if (srcFormat == dstFormat) {
       /* This is the same as matching_base_formats, which should
        * always pass, as it did previously.
        */
       return TGSI_WRITEMASK_XYZW;
    }
-   else if (srcFormat == GL_RGBA &&
-            dstLogicalFormat == GL_RGB) {
-      /* Add a single special case to cope with RGBA->RGB transfers,
-       * setting A to 1.0 to cope with situations where the RGB
-       * destination is actually stored as RGBA.
+   else if (srcFormat == GL_RGB && dstFormat == GL_RGBA) {
+      /* Make sure that A in the dest is 1.  The actual src format
+       * may be RGBA and have undefined A values.
        */
-      return TGSI_WRITEMASK_XYZ; /* A ==> 1.0 */
+      return TGSI_WRITEMASK_XYZ;
+   }
+   else if (srcFormat == GL_RGBA && dstFormat == GL_RGB) {
+      /* Make sure that A in the dest is 1.  The actual dst format
+       * may be RGBA and will need A=1 to provide proper alpha values
+       * when sampled later.
+       */
+      return TGSI_WRITEMASK_XYZ;
    }
    else {
       if (ST_DEBUG & DEBUG_FALLBACK)
          debug_printf("%s failed for src %s, dst %s\n",
                       __FUNCTION__, 
                       _mesa_lookup_enum_by_nr(srcFormat),
-                      _mesa_lookup_enum_by_nr(dstLogicalFormat));
+                      _mesa_lookup_enum_by_nr(dstFormat));
 
       /* Otherwise fail.
        */
@@ -1505,7 +1556,7 @@ st_copy_texsubimage(GLcontext *ctx,
    matching_base_formats =
       (_mesa_get_format_base_format(strb->Base.Format) ==
        _mesa_get_format_base_format(texImage->TexFormat));
-   format_writemask = compatible_src_dst_formats(&strb->Base, texImage);
+   format_writemask = compatible_src_dst_formats(ctx, &strb->Base, texImage);
 
    if (ctx->_ImageTransferState == 0x0) {
 
@@ -1562,6 +1613,7 @@ st_copy_texsubimage(GLcontext *ctx,
          }
          util_blit_pixels_writemask(ctx->st->blit,
                                     strb->surface,
+                                    st_renderbuffer_get_sampler_view(strb, pipe),
                                     srcX, srcY0,
                                     srcX + width, srcY1,
                                     dest_surface,
@@ -1687,19 +1739,16 @@ copy_image_data_to_texture(struct st_context *st,
       st_texture_image_copy(st->pipe,
                             stObj->pt, dstLevel,  /* dest texture, level */
                             stImage->pt, /* src texture */
-                            stImage->face
-                            );
+                            stImage->face);
 
       pipe_texture_reference(&stImage->pt, NULL);
    }
    else if (stImage->base.Data) {
       /* More straightforward upload.  
        */
-
       st_teximage_flush_before_map(st, stObj->pt, stImage->face, dstLevel,
                                   PIPE_TRANSFER_WRITE);
 
-
       st_texture_image_data(st,
                             stObj->pt,
                             stImage->face,
@@ -1761,6 +1810,7 @@ st_finalize_texture(GLcontext *ctx,
        firstImage->pt != stObj->pt &&
        firstImage->pt->last_level >= stObj->lastLevel) {
       pipe_texture_reference(&stObj->pt, firstImage->pt);
+      pipe_sampler_view_reference(&stObj->sampler_view, NULL);
    }
 
    /* bytes per pixel block (blocks are usually 1x1) */
@@ -1780,6 +1830,7 @@ st_finalize_texture(GLcontext *ctx,
           stObj->pt->depth0 != firstImage->base.Depth2)
       {
          pipe_texture_reference(&stObj->pt, NULL);
+         pipe_sampler_view_reference(&stObj->sampler_view, NULL);
          ctx->st->dirty.st |= ST_NEW_FRAMEBUFFER;
       }
    }