i965/blorp: Add an is_render_target parameter to surface_info::set.
[mesa.git] / src / mesa / drivers / dri / i965 / intel_pixel_copy.c
index 7583906dd09aa9c790bfe2f317cccc7e10858820..9dc5c152650149414e77b481b19bdf5e5fefba19 100644 (file)
  * 
  **************************************************************************/
 
-#include "glheader.h"
-#include "enums.h"
-#include "image.h"
-#include "mtypes.h"
-#include "macros.h"
-#include "state.h"
-#include "swrast/swrast.h"
-
-#include "intel_screen.h"
-#include "intel_context.h"
-#include "intel_ioctl.h"
-#include "intel_batchbuffer.h"
-#include "intel_blit.h"
+#include "main/glheader.h"
+#include "main/image.h"
+#include "main/state.h"
+#include "main/mtypes.h"
+#include "main/condrender.h"
+#include "main/fbobject.h"
+#include "drivers/common/meta.h"
+
+#include "brw_context.h"
+#include "intel_buffers.h"
+#include "intel_mipmap_tree.h"
 #include "intel_regions.h"
+#include "intel_pixel.h"
+#include "intel_fbo.h"
+#include "intel_blit.h"
+#include "intel_batchbuffer.h"
 
 #define FILE_DEBUG_FLAG DEBUG_PIXEL
 
-static struct intel_region *
-copypix_src_region(struct intel_context *intel, GLenum type)
+/**
+ * CopyPixels with the blitter.  Don't support zooming, pixel transfer, etc.
+ */
+static bool
+do_blit_copypixels(struct gl_context * ctx,
+                   GLint srcx, GLint srcy,
+                   GLsizei width, GLsizei height,
+                   GLint dstx, GLint dsty, GLenum type)
 {
+   struct brw_context *brw = brw_context(ctx);
+   struct gl_framebuffer *fb = ctx->DrawBuffer;
+   struct gl_framebuffer *read_fb = ctx->ReadBuffer;
+   GLint orig_dstx;
+   GLint orig_dsty;
+   GLint orig_srcx;
+   GLint orig_srcy;
+   struct intel_renderbuffer *draw_irb = NULL;
+   struct intel_renderbuffer *read_irb = NULL;
+
+   /* Update draw buffer bounds */
+   _mesa_update_state(ctx);
+
    switch (type) {
    case GL_COLOR:
-      return intel_readbuf_region(intel);
-   case GL_DEPTH:
-      /* Don't think this is really possible execpt at 16bpp, when we have no stencil.
-       */
-      if (intel->depth_region && intel->depth_region->cpp == 2)
-         return intel->depth_region;
-   case GL_STENCIL:
-      /* Don't think this is really possible. 
-       */
+      if (fb->_NumColorDrawBuffers != 1) {
+        perf_debug("glCopyPixels() fallback: MRT\n");
+        return false;
+      }
+
+      draw_irb = intel_renderbuffer(fb->_ColorDrawBuffers[0]);
+      read_irb = intel_renderbuffer(read_fb->_ColorReadBuffer);
       break;
    case GL_DEPTH_STENCIL_EXT:
-      /* Does it matter whether it is stencil/depth or depth/stencil?
-       */
-      return intel->depth_region;
-   default:
+      draw_irb = intel_renderbuffer(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
+      read_irb =
+        intel_renderbuffer(read_fb->Attachment[BUFFER_DEPTH].Renderbuffer);
       break;
+   case GL_DEPTH:
+      perf_debug("glCopyPixels() fallback: GL_DEPTH\n");
+      return false;
+   case GL_STENCIL:
+      perf_debug("glCopyPixels() fallback: GL_STENCIL\n");
+      return false;
+   default:
+      perf_debug("glCopyPixels(): Unknown type\n");
+      return false;
    }
 
-   return NULL;
-}
-
-
-
+   if (!draw_irb) {
+      perf_debug("glCopyPixels() fallback: missing draw buffer\n");
+      return false;
+   }
 
-/**
- * Check if any fragment operations are in effect which might effect
- * glDraw/CopyPixels.
- */
-GLboolean
-intel_check_blit_fragment_ops(GLcontext * ctx)
-{
-   if (ctx->NewState)
-      _mesa_update_state(ctx);
+   if (!read_irb) {
+      perf_debug("glCopyPixels() fallback: missing read buffer\n");
+      return false;
+   }
 
-   return !(ctx->_ImageTransferState ||
-           ctx->RenderMode != GL_RENDER ||
-            ctx->Color.AlphaEnabled ||
-            ctx->Depth.Test ||
-            ctx->Fog.Enabled ||
-            ctx->Stencil.Enabled ||
-            !ctx->Color.ColorMask[0] ||
-            !ctx->Color.ColorMask[1] ||
-            !ctx->Color.ColorMask[2] ||
-            !ctx->Color.ColorMask[3] ||        /* can do this! */
-            ctx->Texture._EnabledUnits ||
-           ctx->FragmentProgram._Enabled ||
-           ctx->Color.BlendEnabled);
-}
+   if (ctx->_ImageTransferState) {
+      perf_debug("glCopyPixels(): Unsupported image transfer state\n");
+      return false;
+   }
 
-/* Doesn't work for overlapping regions.  Could do a double copy or
- * just fallback.
- */
-static GLboolean
-do_texture_copypixels(GLcontext * ctx,
-                      GLint srcx, GLint srcy,
-                      GLsizei width, GLsizei height,
-                      GLint dstx, GLint dsty, GLenum type)
-{
-   struct intel_context *intel = intel_context(ctx);
-   struct intel_region *dst = intel_drawbuf_region(intel);
-   struct intel_region *src = copypix_src_region(intel, type);
-   GLenum src_format;
-   GLenum src_type;
+   if (ctx->Depth.Test) {
+      perf_debug("glCopyPixels(): Unsupported depth test state\n");
+      return false;
+   }
 
-   DBG("%s %d,%d %dx%d --> %d,%d\n", __FUNCTION__, 
-       srcx, srcy, width, height, dstx, dsty);
+   if (ctx->Stencil._Enabled) {
+      perf_debug("glCopyPixels(): Unsupported stencil test state\n");
+      return false;
+   }
 
-   if (!src || !dst || type != GL_COLOR ||
-       ctx->_ImageTransferState ||
-       ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F ||
-       ctx->RenderMode != GL_RENDER ||
+   if (ctx->Fog.Enabled ||
        ctx->Texture._EnabledUnits ||
-       ctx->FragmentProgram._Enabled ||
-       src != dst )
-       return GL_FALSE;
-   
-   /* Can't handle overlapping regions.  Don't have sufficient control
-    * over rasterization to pull it off in-place.  Punt on these for
-    * now.
-    * 
-    * XXX: do a copy to a temporary. 
-    */
-   if (src->buffer == dst->buffer) {
-      drm_clip_rect_t srcbox;
-      drm_clip_rect_t dstbox;
-      drm_clip_rect_t tmp;
-
-      srcbox.x1 = srcx;
-      srcbox.y1 = srcy;
-      srcbox.x2 = srcx + width - 1;
-      srcbox.y2 = srcy + height - 1;
-
-      dstbox.x1 = dstx;
-      dstbox.y1 = dsty;
-      dstbox.x2 = dstx + width - 1;
-      dstbox.y2 = dsty + height - 1;
-
-      DBG("src %d,%d %d,%d\n", srcbox.x1, srcbox.y1, srcbox.x2, srcbox.y2);
-      DBG("dst %d,%d %d,%d (%dx%d) (%f,%f)\n", dstbox.x1, dstbox.y1, dstbox.x2, dstbox.y2,
-         width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY);
-
-      if (intel_intersect_cliprects(&tmp, &srcbox, &dstbox)) {
-         DBG("%s: regions overlap\n", __FUNCTION__);
-         return GL_FALSE;
-      }
+       ctx->FragmentProgram._Enabled) {
+      perf_debug("glCopyPixels(): Unsupported fragment shader state\n");
+      return false;
    }
 
-   intelFlush(&intel->ctx);
-
-   intel->vtbl.install_meta_state(intel);
-
-   /* Is this true?  Also will need to turn depth testing on according
-    * to state:
-    */
-   intel->vtbl.meta_no_stencil_write(intel);
-   intel->vtbl.meta_no_depth_write(intel);
-
-   /* Set the 3d engine to draw into the destination region:
-    */
-   intel->vtbl.meta_draw_region(intel, dst, intel->depth_region);
+   if (ctx->Color.AlphaEnabled ||
+       ctx->Color.BlendEnabled) {
+      perf_debug("glCopyPixels(): Unsupported blend state\n");
+      return false;
+   }
 
-   intel->vtbl.meta_import_pixel_state(intel);
+   if (!ctx->Color.ColorMask[0][0] ||
+       !ctx->Color.ColorMask[0][1] ||
+       !ctx->Color.ColorMask[0][2] ||
+       !ctx->Color.ColorMask[0][3]) {
+      perf_debug("glCopyPixels(): Unsupported color mask state\n");
+      return false;
+   }
 
-   if (src->cpp == 2) {
-      src_format = GL_RGB;
-      src_type = GL_UNSIGNED_SHORT_5_6_5;
+   if (ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F) {
+      perf_debug("glCopyPixles(): Unsupported pixel zoom\n");
+      return false;
    }
-   else {
-      src_format = GL_BGRA;
-      src_type = GL_UNSIGNED_BYTE;
+
+   intel_prepare_render(brw);
+
+   intel_batchbuffer_flush(brw);
+
+   /* Clip to destination buffer. */
+   orig_dstx = dstx;
+   orig_dsty = dsty;
+   if (!_mesa_clip_to_region(fb->_Xmin, fb->_Ymin,
+                            fb->_Xmax, fb->_Ymax,
+                            &dstx, &dsty, &width, &height))
+      goto out;
+   /* Adjust src coords for our post-clipped destination origin */
+   srcx += dstx - orig_dstx;
+   srcy += dsty - orig_dsty;
+
+   /* Clip to source buffer. */
+   orig_srcx = srcx;
+   orig_srcy = srcy;
+   if (!_mesa_clip_to_region(0, 0,
+                            read_fb->Width, read_fb->Height,
+                            &srcx, &srcy, &width, &height))
+      goto out;
+   /* Adjust dst coords for our post-clipped source origin */
+   dstx += srcx - orig_srcx;
+   dsty += srcy - orig_srcy;
+
+   if (!intel_miptree_blit(brw,
+                           read_irb->mt, read_irb->mt_level, read_irb->mt_layer,
+                           srcx, srcy, _mesa_is_winsys_fbo(read_fb),
+                           draw_irb->mt, draw_irb->mt_level, draw_irb->mt_layer,
+                           dstx, dsty, _mesa_is_winsys_fbo(fb),
+                           width, height,
+                           (ctx->Color.ColorLogicOpEnabled ?
+                            ctx->Color.LogicOp : GL_COPY))) {
+      DBG("%s: blit failure\n", __FUNCTION__);
+      return false;
    }
 
-   /* Set the frontbuffer up as a large rectangular texture.
-    */
-   intel->vtbl.meta_frame_buffer_texture( intel, srcx - dstx, srcy - dsty );
+   if (ctx->Query.CurrentOcclusionObject)
+      ctx->Query.CurrentOcclusionObject->Result += width * height;
+
+out:
+   intel_check_front_buffer_rendering(brw);
 
-   intel->vtbl.meta_texture_blend_replace(intel);
-   
-   if (intel->driDrawable->numClipRects)
-      intel->vtbl.meta_draw_quad( intel,
-                                 dstx, dstx + width,
-                                 dsty, dsty + height,
-                                 ctx->Current.RasterPos[ 2 ],
-                                 0, 0.0, 0.0, 0.0, 0.0 );
-   
-   intel->vtbl.leave_meta_state( intel );
-   
    DBG("%s: success\n", __FUNCTION__);
-   return GL_TRUE;
+   return true;
 }
 
-/**
- * CopyPixels with the blitter.  Don't support zooming, pixel transfer, etc.
- */
-static GLboolean
-do_blit_copypixels(GLcontext * ctx,
-                   GLint srcx, GLint srcy,
-                   GLsizei width, GLsizei height,
-                   GLint dstx, GLint dsty, GLenum type)
-{
-   struct intel_context *intel = intel_context(ctx);
-   struct intel_region *dst = intel_drawbuf_region(intel);
-   struct intel_region *src = copypix_src_region(intel, type);
-
-   /* Copypixels can be more than a straight copy.  Ensure all the
-    * extra operations are disabled:
-    */
-   if (!intel_check_blit_fragment_ops(ctx) ||
-       ctx->Pixel.ZoomX != 1.0F || ctx->Pixel.ZoomY != 1.0F)
-      return GL_FALSE;
-
-   if (!src || !dst)
-      return GL_FALSE;
-
-
-
-   intelFlush(&intel->ctx);
-
-/*    intel->vtbl.render_start(intel); */
-/*    intel->vtbl.emit_state(intel); */
-
-   LOCK_HARDWARE(intel);
-
-   if (intel->driDrawable->numClipRects) {
-      __DRIdrawablePrivate *dPriv = intel->driDrawable;
-      __DRIdrawablePrivate *dReadPriv = intel->driReadDrawable;
-      drm_clip_rect_t *box = dPriv->pClipRects;
-      drm_clip_rect_t dest_rect;
-      GLint nbox = dPriv->numClipRects;
-      GLint delta_x = 0;
-      GLint delta_y = 0;
-      GLuint i;
-
-      /* Do scissoring in GL coordinates:
-       */
-      if (ctx->Scissor.Enabled)
-      {
-        GLint x = ctx->Scissor.X;
-        GLint y = ctx->Scissor.Y;
-        GLuint w = ctx->Scissor.Width;
-        GLuint h = ctx->Scissor.Height;
-        GLint dx = dstx - srcx;
-         GLint dy = dsty - srcy;
-
-         if (!_mesa_clip_to_region(x, y, x+w-1, y+h-1, &dstx, &dsty, &width, &height))
-            goto out;
-        
-         srcx = dstx - dx;
-         srcy = dsty - dy;
-      }
-
-      /* Convert from GL to hardware coordinates:
-       */
-      dsty = dPriv->h - dsty - height;  
-      srcy = dPriv->h - srcy - height;  
-      dstx += dPriv->x;
-      dsty += dPriv->y;
-      srcx += dReadPriv->x;
-      srcy += dReadPriv->y;
-
-      /* Clip against the source region.  This is the only source
-       * clipping we do.  Dst is clipped with cliprects below.
-       */
-      {
-         delta_x = srcx - dstx;
-         delta_y = srcy - dsty;
-
-         if (!_mesa_clip_to_region(0, 0, src->pitch, src->height,
-                                   &srcx, &srcy, &width, &height))
-            goto out;
-
-         dstx = srcx - delta_x;
-         dsty = srcy - delta_y;
-      }
-
-      dest_rect.x1 = dstx;
-      dest_rect.y1 = dsty;
-      dest_rect.x2 = dstx + width;
-      dest_rect.y2 = dsty + height;
-
-/*       intel->vtbl.emit_flush(intel, 0); */
-
-      /* Could do slightly more clipping: Eg, take the intersection of
-       * the existing set of cliprects and those cliprects translated
-       * by delta_x, delta_y:
-       * 
-       * This code will not overwrite other windows, but will
-       * introduce garbage when copying from obscured window regions.
-       */
-      for (i = 0; i < nbox; i++) {
-         drm_clip_rect_t rect;
-
-         if (!intel_intersect_cliprects(&rect, &dest_rect, &box[i]))
-            continue;
-
-
-         intelEmitCopyBlit(intel, 
-                          dst->cpp, 
-                          src->pitch, src->buffer, 0, src->tiled,
-                          dst->pitch, dst->buffer, 0, dst->tiled,
-                          rect.x1 + delta_x, 
-                          rect.y1 + delta_y,       /* srcx, srcy */
-                           rect.x1, rect.y1,    /* dstx, dsty */
-                           rect.x2 - rect.x1, rect.y2 - rect.y1,
-                          ctx->Color.ColorLogicOpEnabled ?
-                          ctx->Color.LogicOp : GL_COPY);
-      }
-
-      intel->need_flush = GL_TRUE;
-   out:
-      intel_batchbuffer_flush(intel->batch);
-   }
-   UNLOCK_HARDWARE(intel);
-   return GL_TRUE;
-}
 
 void
-intelCopyPixels(GLcontext * ctx,
+intelCopyPixels(struct gl_context * ctx,
                 GLint srcx, GLint srcy,
                 GLsizei width, GLsizei height,
                 GLint destx, GLint desty, GLenum type)
 {
-   if (INTEL_DEBUG & DEBUG_PIXEL)
-      fprintf(stderr, "%s\n", __FUNCTION__);
+   DBG("%s\n", __FUNCTION__);
 
-   if (do_blit_copypixels(ctx, srcx, srcy, width, height, destx, desty, type))
+   if (!_mesa_check_conditional_render(ctx))
       return;
 
-   if (do_texture_copypixels(ctx, srcx, srcy, width, height, destx, desty, type))
+   if (do_blit_copypixels(ctx, srcx, srcy, width, height, destx, desty, type))
       return;
-   
-   if (INTEL_DEBUG & DEBUG_PIXEL)
-      _mesa_printf("fallback to _swrast_CopyPixels\n");
 
-   _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type);
+   /* this will use swrast if needed */
+   _mesa_meta_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type);
 }