[Piglit] [PATCH] Fix a couple EXT_blend_func_extended test bugs exposed by the Nvidia blob.

[Ryan Houdek]

fbo-extended-blend-pattern was using an implicit integer to float conversion
which isn't allowed in ESSL.

builtins program linker error checking was dumb, do explicit link checking instead.
---
 tests/spec/arb_blend_func_extended/api/builtins.c                    | 5 ++++-
 .../arb_blend_func_extended/execution/fbo-extended-blend-pattern.c   | 4 ++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/tests/spec/arb_blend_func_extended/api/builtins.c b/tests/spec/arb_blend_func_extended/api/builtins.c
index e0a6c6f..7525244 100644
--- a/tests/spec/arb_blend_func_extended/api/builtins.c
+++ b/tests/spec/arb_blend_func_extended/api/builtins.c
@@ -35,6 +35,7 @@ bool compile_simple_program(const char* vs_text, const char* fs_text)
 	GLuint vs;
 	GLuint fs;
 	GLuint prog;
+	bool status;
 
 	prog = glCreateProgram();
 
@@ -48,7 +49,9 @@ bool compile_simple_program(const char* vs_text, const char* fs_text)
 	glAttachShader(prog, fs);
 	glLinkProgram(prog);
 
-	return !!prog;
+	status = piglit_link_check_status(prog);
+	glDeleteProgram(prog);
+	return status;
 }
 
 enum piglit_result
diff --git a/tests/spec/arb_blend_func_extended/execution/fbo-extended-blend-pattern.c b/tests/spec/arb_blend_func_extended/execution/fbo-extended-blend-pattern.c
index 50f84af..129fe63 100644
--- a/tests/spec/arb_blend_func_extended/execution/fbo-extended-blend-pattern.c
+++ b/tests/spec/arb_blend_func_extended/execution/fbo-extended-blend-pattern.c
@@ -83,7 +83,7 @@ static const char *fs_text =
    "void main() {\n"
    "   int a = int(gl_FragCoord.x) / 10;\n"
    "   int b = int(gl_FragCoord.y) / 10;\n"
-   "   int c = int(mod(a + b, 2));\n"
+   "   int c = (a + b) % 2;\n"
    "   col0 = src0;\n"
    "   if (c == 0)\n"
    "      col1 = src1;\n"
@@ -112,7 +112,7 @@ static const char *fs_text =
    "void main() {\n"
    "   int a = int(gl_FragCoord.x) / 10;\n"
    "   int b = int(gl_FragCoord.y) / 10;\n"
-   "   int c = int(mod(a + b, 2));\n"
+   "   int c = (a + b) % 2;\n"
    "   col0 = src0;\n"
    "   if (c == 0)\n"
    "      col1 = src1;\n"
-- 
2.5.0