[v3 PATCH 3/3] wined3d: Use EXT_framebuffer_multisample_blit_scaled extension.

[Paul Gofman]

Signed-off-by: Paul Gofman <gofmanp at gmail.com>
---
v3:
    - don't use resolve filter in case of no scaling in texture2d_blt_fbo().

 dlls/wined3d/adapter_gl.c |  2 ++
 dlls/wined3d/surface.c    | 16 ++++++++++++----
 dlls/wined3d/wined3d_gl.h |  1 +
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/dlls/wined3d/adapter_gl.c b/dlls/wined3d/adapter_gl.c
index 6e60c5323e..ee091a9b77 100644
--- a/dlls/wined3d/adapter_gl.c
+++ b/dlls/wined3d/adapter_gl.c
@@ -206,6 +206,8 @@ static const struct wined3d_extension_map gl_extension_map[] =
     {"GL_EXT_texture_snorm",                EXT_TEXTURE_SNORM             },
     {"GL_EXT_texture_sRGB",                 EXT_TEXTURE_SRGB              },
     {"GL_EXT_texture_sRGB_decode",          EXT_TEXTURE_SRGB_DECODE       },
+    {"GL_EXT_framebuffer_multisample_blit_scaled",
+                                   EXT_FRAMEBUFFER_MULTISAMPLE_BLIT_SCALED},
     {"GL_EXT_texture_swizzle",              ARB_TEXTURE_SWIZZLE           },
     {"GL_EXT_vertex_array_bgra",            ARB_VERTEX_ARRAY_BGRA         },
 
diff --git a/dlls/wined3d/surface.c b/dlls/wined3d/surface.c
index 1e47f47841..d12a320fef 100644
--- a/dlls/wined3d/surface.c
+++ b/dlls/wined3d/surface.c
@@ -150,6 +150,7 @@ void texture2d_blt_fbo(struct wined3d_device *device, struct wined3d_context *co
     const struct wined3d_gl_info *gl_info;
     struct wined3d_context_gl *context_gl;
     unsigned int restore_idx;
+    BOOL use_resolve_filter;
     GLenum gl_filter;
     GLenum buffer;
     RECT s, d;
@@ -160,10 +161,14 @@ void texture2d_blt_fbo(struct wined3d_device *device, struct wined3d_context *co
             wined3d_debug_location(src_location), wine_dbgstr_rect(src_rect), dst_texture,
             dst_sub_resource_idx, wined3d_debug_location(dst_location), wine_dbgstr_rect(dst_rect));
 
+    use_resolve_filter = wined3d_texture_gl_is_multisample_location(wined3d_texture_gl(src_texture),
+            src_location) && (abs(src_rect->bottom - src_rect->top) != abs(dst_rect->bottom - dst_rect->top)
+            || abs(src_rect->right - src_rect->left) != abs(dst_rect->right - dst_rect->left));
+
     switch (filter)
     {
         case WINED3D_TEXF_LINEAR:
-            gl_filter = GL_LINEAR;
+            gl_filter = use_resolve_filter ? GL_SCALED_RESOLVE_NICEST_EXT : GL_LINEAR;
             break;
 
         default:
@@ -171,7 +176,7 @@ void texture2d_blt_fbo(struct wined3d_device *device, struct wined3d_context *co
             /* fall through */
         case WINED3D_TEXF_NONE:
         case WINED3D_TEXF_POINT:
-            gl_filter = GL_NEAREST;
+            gl_filter = use_resolve_filter ? GL_SCALED_RESOLVE_FASTEST_EXT : GL_NEAREST;
             break;
     }
 
@@ -896,6 +901,7 @@ static DWORD fbo_blitter_blit(struct wined3d_blitter *blitter, enum wined3d_blit
         const struct wined3d_color_key *colour_key, enum wined3d_texture_filter_type filter)
 {
     struct wined3d_context_gl *context_gl = wined3d_context_gl(context);
+    const struct wined3d_gl_info *gl_info = context_gl->gl_info;
     struct wined3d_resource *src_resource, *dst_resource;
     enum wined3d_blit_op blit_op = op;
     struct wined3d_device *device;
@@ -920,7 +926,7 @@ static DWORD fbo_blitter_blit(struct wined3d_blitter *blitter, enum wined3d_blit
             blit_op = WINED3D_BLIT_OP_COLOR_BLIT;
     }
 
-    if (!fbo_blitter_supported(blit_op, context_gl->gl_info,
+    if (!fbo_blitter_supported(blit_op, gl_info,
             src_resource, src_location, dst_resource, dst_location))
     {
         if (!(next = blitter->next))
@@ -946,7 +952,9 @@ static DWORD fbo_blitter_blit(struct wined3d_blitter *blitter, enum wined3d_blit
             if (wined3d_texture_gl_is_multisample_location(wined3d_texture_gl(dst_texture), dst_location))
                 dst_location = WINED3D_LOCATION_RB_RESOLVED;
 
-            if (wined3d_texture_gl_is_multisample_location(wined3d_texture_gl(src_texture), src_location))
+            if (wined3d_texture_gl_is_multisample_location(wined3d_texture_gl(src_texture), src_location)
+                    && (src_texture->resource.format->id != dst_texture->resource.format->id
+                    || !gl_info->supported[EXT_FRAMEBUFFER_MULTISAMPLE_BLIT_SCALED]))
                 src_location = WINED3D_LOCATION_RB_RESOLVED;
         }
 
diff --git a/dlls/wined3d/wined3d_gl.h b/dlls/wined3d/wined3d_gl.h
index 3372b4b6be..2d838d7f84 100644
--- a/dlls/wined3d/wined3d_gl.h
+++ b/dlls/wined3d/wined3d_gl.h
@@ -185,6 +185,7 @@ enum wined3d_gl_extension
     EXT_TEXTURE_SNORM,
     EXT_TEXTURE_SRGB,
     EXT_TEXTURE_SRGB_DECODE,
+    EXT_FRAMEBUFFER_MULTISAMPLE_BLIT_SCALED,
     /* NVIDIA */
     NV_FENCE,
     NV_FOG_DISTANCE,
-- 
2.24.1