Bug 78872

System Environment:
--------------------------
Platform: Ironlake
Libdrm:	(master)libdrm-2.4.54-8-g305478ce02ebd908a75c9830ecea15f6e2469b42
Mesa:	(master)5646319f25c7880b3706bb7590e24c84fd8de0fc
Xserver:(master)xorg-server-1.15.99.902-91-g01e18af17f8dc91451fbd0902049045afd1cea7e
Xf86_video_intel:(master)2.99.911-173-gdf297e9fafe1a7de1036f3151f93de67661c2a4e
Libva:	(staging)968ade9411de9c5ae2eead0a7e8755747a32a3a2
Libva_intel_driver:		(staging)1c4d3468229797e787f4b99b0729baf90a115a1d
Kernel:	(drm-intel-nightly)f79ba79cf037eea9ee757ad37730b00f43d5ef80

Bug detailed description:
-----------------------------
It fails on Ironlake with Mesa master branch and 10.2 branch.
Following cases also fails with same bisect commit:
spec_ARB_depth_buffer_float_fbo-depthstencil-GL_DEPTH32F_STENCIL8-blit
spec_ARB_depth_buffer_float_fbo-stencil-GL_DEPTH32F_STENCIL8-blit
spec_ARB_framebuffer_object_framebuffer-blit-levels_draw_stencil
spec_ARB_framebuffer_object_framebuffer-blit-levels_read_stencil
spec_EXT_framebuffer_object_fbo-stencil-GL_STENCIL_INDEX1-blit
spec_EXT_framebuffer_object_fbo-stencil-GL_STENCIL_INDEX16-blit
spec_EXT_framebuffer_object_fbo-stencil-GL_STENCIL_INDEX4-blit
spec_EXT_framebuffer_object_fbo-stencil-GL_STENCIL_INDEX8-blit
spec_EXT_packed_depth_stencil_fbo-blit-d24s8
spec_EXT_packed_depth_stencil_fbo-depthstencil-GL_DEPTH24_STENCIL8-blit
spec_EXT_packed_depth_stencil_fbo-stencil-GL_DEPTH24_STENCIL8-blit
spec_OpenGL_1.1_depthstencil-default_fb-blit

Bisect shows:b18f6b9b86531581da567eaa400923e35e22006d is the first bad commit
commit b18f6b9b86531581da567eaa400923e35e22006d
Author:     Topi Pohjolainen <topi.pohjolainen@intel.com>
AuthorDate: Sat Apr 19 17:11:10 2014 +0300
Commit:     Topi Pohjolainen <topi.pohjolainen@intel.com>
CommitDate: Thu May 15 21:39:33 2014 +0300

    i965/fb: Use meta path for stencil blits

    This is effective only on gen8 for now as previous generations still
    go through blorp.

    Cc: "10.2" <mesa-stable@lists.freedesktop.org>
    Signed-off-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
    Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

output:
Testing GL_DEPTH32F_STENCIL8.
Testing glBlitFramebuffer(depthstencil).
Mesa 10.3.0-devel implementation error: meta program compile failed:
0:1(10): error: GLSL 1.30 is not supported. Supported versions are: 1.10, 1.20, and 1.00 ES

source:
#version 130
in vec2 position;
out vec2 tex_coords;
void main()
{
   tex_coords = (position + 1.0) / 2.0;
   gl_Position = vec4(position, 0.0, 1.0);
}


Please report at https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa
Mesa 10.3.0-devel implementation error: meta program compile failed:
0:1(10): error: GLSL 1.30 is not supported. Supported versions are: 1.10, 1.20, and 1.00 ES

source:
#version 130
uniform usampler2D texSampler;
uniform float src_x_scale;
uniform float src_y_scale;
uniform float src_x_off;
uniform float src_y_off;
uniform float dst_x_off;
uniform float dst_y_off;
uniform float draw_rect_w;
uniform float draw_rect_h;
uniform int dst_x0;
uniform int dst_x1;
uniform int dst_y0;
uniform int dst_y1;
uniform int dst_num_samples;
in vec2 tex_coords;
ivec2 txl_coords;
int sample_index;
out uvec4 out_color;

void get_unorm_target_coords()
{
   txl_coords.x = int(tex_coords.x * draw_rect_w + dst_x_off);
   txl_coords.y = int(tex_coords.y * draw_rect_h + dst_y_off);
}

void translate_dst_to_src()
{
   txl_coords.x = int(float(txl_coords.x) * src_x_scale + src_x_off);
   txl_coords.y = int(float(txl_coords.y) * src_y_scale + src_y_off);
}

void translate_y_to_w_tiling()
{
   int X = txl_coords.x;
   int Y = txl_coords.y;
   txl_coords.x = (X & int(0xfff4)) >> 1;
   txl_coords.x |= ((Y & int(0x1)) << 2);
   txl_coords.x |= (X & int(0x1));
   txl_coords.y = (Y & int(0xfffe)) << 1;
   txl_coords.y |= ((X & int(0x8)) >> 2);
   txl_coords.y |= ((X & int(0x2)) >> 1);
}

void decode_msaa()
{
   int X = txl_coords.x;
   int Y = txl_coords.y;
   switch (dst_num_samples) {
   case 0:
      sample_index = 0;
      break;
   case 2:
      txl_coords.x = ((X & int(0xfffc)) >> 1) | (X & int(0x1));
      sample_index = (X & 0x2) >> 1;
      break;
   case 4:
      txl_coords.x = ((X & int(0xfffc)) >> 1) | (X & int(0x1));
      txl_coords.y = ((Y & int(0xfffc)) >> 1) | (Y & int(0x1));
      sample_index = (Y & 0x2) | ((X & 0x2) >> 1);
      break;
   case 8:
      txl_coords.x = ((X & int(0xfff8)) >> 2) | (X & int(0x1));
      txl_coords.y = ((Y & int(0xfffc)) >> 1) | (Y & int(0x1));
      sample_index = (X & 0x4) | (Y & 0x2) | ((X & 0x2) >> 1);
   }
}

void discard_outside_bounding_rect()
{
   int X = txl_coords.x;
   int Y = txl_coords.y;
   if (X >= dst_x1 || X < dst_x0 || Y >= dst_y1 || Y < dst_y0)
      discard;
}

void main()
{
   get_unorm_target_coords();
   translate_y_to_w_tiling();
   decode_msaa();   discard_outside_bounding_rect();
   translate_dst_to_src();
      out_color = texelFetch(texSampler, txl_coords, 0);
}


Please report at https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa
Stencil at 0,0   Expected: 0x33   Observed: 0xfe
Stencil at 1,0   Expected: 0x33   Observed: 0xfe
Stencil at 2,0   Expected: 0x33   Observed: 0xfe
Stencil at 3,0   Expected: 0x33   Observed: 0xfe
Stencil at 4,0   Expected: 0x33   Observed: 0xfe
Stencil at 5,0   Expected: 0x33   Observed: 0xfe
Stencil at 6,0   Expected: 0x33   Observed: 0xfe
Stencil at 7,0   Expected: 0x33   Observed: 0xfe
Stencil at 8,0   Expected: 0x33   Observed: 0xfe
Stencil at 9,0   Expected: 0x33   Observed: 0xfe
Stencil at 10,0   Expected: 0x33   Observed: 0xfe
Stencil at 11,0   Expected: 0x33   Observed: 0xfe
Stencil at 12,0   Expected: 0x33   Observed: 0xfe
Stencil at 13,0   Expected: 0x33   Observed: 0xfe
Stencil at 14,0   Expected: 0x33   Observed: 0xfe
Stencil at 15,0   Expected: 0x33   Observed: 0xfe
Stencil at 16,0   Expected: 0x33   Observed: 0xfe
Stencil at 17,0   Expected: 0x33   Observed: 0xfe
Stencil at 18,0   Expected: 0x33   Observed: 0xfe
...
Total failures: 3721
fbo-depthstencil: /GFX/Test/Piglit/piglit/tests/fbo/fbo-depthstencil.c:483: piglit_display: Assertion `piglit_dispatch_glGetError() == 0' failed.
Aborted (core dumped)

Reproduce steps:
---------------------------- 
1. xinit
2. bin/fbo-depthstencil blit GL_DEPTH32F_STENCIL8 -fbo -auto