[PATCH 0/3] MR450: wined3d: Do not pause transform feedback after every draw call.

[Zebediah Figura (＠zfigura)]

test_index_buffer_offset() occasionally fails (on some machines and/or Mesa versions) due to a bug in radeonsi. Although the bug has since been fixed upstream, I ended up writing these patches for it, and since they reduce GL calls I'm inclined to believe they're a good idea regardless.

The relevant Mesa bug is https://gitlab.freedesktop.org/mesa/mesa/-/issues/6138.

[PATCH 1/3] wined3d: Pause transform feedback in wined3d_context_gl_draw_shaded_quad().

[Zebediah Figura]

From: Zebediah Figura

---
 dlls/wined3d/context_gl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/wined3d/context_gl.c b/dlls/wined3d/context_gl.c
index 5292297bb85..72e3bc6f98d 100644
--- a/dlls/wined3d/context_gl.c
+++ b/dlls/wined3d/context_gl.c
@@ -5946,6 +5946,8 @@ void wined3d_context_gl_draw_shaded_quad(struct wined3d_context_gl *context_gl,
     apply_texture_blit_state(gl_info, &texture_gl->texture_rgb, info.bind_target, level, filter);
     gl_info->gl_ops.gl.p_glTexParameteri(info.bind_target, GL_TEXTURE_MAX_LEVEL, level);

+    wined3d_context_gl_pause_transform_feedback(context_gl, FALSE);
+
     wined3d_context_gl_get_rt_size(context_gl, &dst_size);
     w = dst_size.cx;
     h = dst_size.cy;

[PATCH 2/3] wined3d: Pause transform feedback in wined3d_context_gl_draw_textured_quad().

[Zebediah Figura]

From: Zebediah Figura

---
 dlls/wined3d/context_gl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/dlls/wined3d/context_gl.c b/dlls/wined3d/context_gl.c
index 72e3bc6f98d..f512aefb709 100644
--- a/dlls/wined3d/context_gl.c
+++ b/dlls/wined3d/context_gl.c
@@ -6031,6 +6031,8 @@ void wined3d_context_gl_draw_textured_quad(struct wined3d_context_gl *context_gl
     gl_info->gl_ops.gl.p_glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
     checkGLcall("glTexEnvi");

+    wined3d_context_gl_pause_transform_feedback(context_gl, FALSE);
+
     /* Draw a quad. */
     gl_info->gl_ops.gl.p_glBegin(GL_TRIANGLE_STRIP);
     gl_info->gl_ops.gl.p_glTexCoord3fv(&info.texcoords[0].x);

[PATCH 3/3] wined3d: Do not pause transform feedback after every draw call.

[Zebediah Figura]

From: Zebediah Figura

Besides being unnecessary, this triggers a bug in radeonsi (since fixed upstream), which can cause failures in d3d10core and d3d11 tests.
---
 dlls/wined3d/context_gl.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/dlls/wined3d/context_gl.c b/dlls/wined3d/context_gl.c
index f512aefb709..721ffdc3c09 100644
--- a/dlls/wined3d/context_gl.c
+++ b/dlls/wined3d/context_gl.c
@@ -5321,8 +5321,6 @@ void draw_primitive(struct wined3d_device *device, const struct wined3d_state *s
         checkGLcall("glMemoryBarrier");
     }

-    wined3d_context_gl_pause_transform_feedback(context_gl, FALSE);
-
     if (rasterizer_discard)
     {
         glDisable(GL_RASTERIZER_DISCARD);