Exposes a bug in the i965 driver.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=82991
---
tests/shaders/glsl-deriv-varyings.c | 131 +++++++++++++++++++++++++++++++++++-
1 file changed, 130 insertions(+), 1 deletion(-)
diff --git a/tests/shaders/glsl-deriv-varyings.c
b/tests/shaders/glsl-deriv-varyings.c
index 4ce0984..fa72eec 100644
--- a/tests/shaders/glsl-deriv-varyings.c
+++ b/tests/shaders/glsl-deriv-varyings.c
@@ -37,7 +37,7 @@ PIGLIT_GL_TEST_CONFIG_BEGIN
config.supports_gl_compat_version = 10;
- config.window_width = 400;
+ config.window_width = 600;
config.window_height = 300;
config.window_visual = PIGLIT_GL_VISUAL_RGB | PIGLIT_GL_VISUAL_DOUBLE;
@@ -49,6 +49,12 @@ static GLint vs1;
static GLint fs1;
static GLint prog2;
static GLint fs2;
+static GLint prog3;
+static GLint fs3;
+static GLint prog4;
+static GLint fs4;
+static GLint prog5;
+static GLint fs5;
static GLfloat verts[12] = {175.0, 125.0, 0.0,
@@ -89,6 +95,36 @@ static const char *fragShaderText2 =
" 0.0, 1.0);\n"
"} \n";
+static const char *fragShaderText3 =
+ "uniform sampler2D tex2d;\n"
+ "varying vec2 texCoords;\n"
+ "void main()\n"
+ "{ \n"
+ " gl_FragColor = vec4(dFdx(-texCoords.x) * -40.0,\n"
+ " dFdy(-texCoords.y) * -40.0,\n"
+ " 0.0, 1.0);\n"
+ "} \n";
+
+static const char *fragShaderText4 =
+ "uniform sampler2D tex2d;\n"
+ "varying vec2 texCoords;\n"
+ "void main()\n"
+ "{ \n"
+ " gl_FragColor = vec4(dFdx(abs(-texCoords.x)) * 40.0,\n"
+ " dFdy(abs(-texCoords.y)) * 40.0,\n"
+ " 0.0, 1.0);\n"
+ "} \n";
+
+static const char *fragShaderText5 =
+ "uniform sampler2D tex2d;\n"
+ "varying vec2 texCoords;\n"
+ "void main()\n"
+ "{ \n"
+ " gl_FragColor = vec4(dFdx(-abs(texCoords.x)) * -40.0,\n"
+ " dFdy(-abs(texCoords.y) * -40.0,\n"
+ " 0.0, 1.0);\n"
+ "} \n";
+
void
@@ -116,9 +152,18 @@ compileLinkProg(void)
fs2 = glCreateShader(GL_FRAGMENT_SHADER);
+ fs3 = glCreateShader(GL_FRAGMENT_SHADER);
+
+ fs4 = glCreateShader(GL_FRAGMENT_SHADER);
+
+ fs5 = glCreateShader(GL_FRAGMENT_SHADER);
+
glShaderSource(vs1, 1, (const GLchar **) &vertShaderText, NULL);
glShaderSource(fs1, 1, (const GLchar **) &fragShaderText, NULL);
glShaderSource(fs2, 1, (const GLchar **) &fragShaderText2, NULL);
+ glShaderSource(fs3, 1, (const GLchar **) &fragShaderText3, NULL);
+ glShaderSource(fs4, 1, (const GLchar **) &fragShaderText3, NULL);
+ glShaderSource(fs5, 1, (const GLchar **) &fragShaderText3, NULL);
glCompileShader(vs1);
glGetShaderiv(vs1, GL_COMPILE_STATUS, &stat);
@@ -141,6 +186,27 @@ compileLinkProg(void)
exit(1);
}
+ glCompileShader(fs3);
+ glGetShaderiv(fs3, GL_COMPILE_STATUS, &stat);
+ if (!stat) {
+ printf("error compiling fragment shader3!\n");
+ exit(1);
+ }
+
+ glCompileShader(fs4);
+ glGetShaderiv(fs4, GL_COMPILE_STATUS, &stat);
+ if (!stat) {
+ printf("error compiling fragment shader4!\n");
+ exit(1);
+ }
+
+ glCompileShader(fs5);
+ glGetShaderiv(fs5, GL_COMPILE_STATUS, &stat);
+ if (!stat) {
+ printf("error compiling fragment shader5!\n");
+ exit(1);
+ }
+
prog1 = glCreateProgram();
glAttachShader(prog1, vs1);
@@ -170,6 +236,51 @@ compileLinkProg(void)
texCoords);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
+
+
+ prog3 = glCreateProgram();
+ glAttachShader(prog3, vs1);
+ glAttachShader(prog3, fs3);
+ glBindAttribLocation(prog3, 1, "textureCoords");
+ glLinkProgram(prog3);
+ glUseProgram(prog3);
+
+ glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat),
+ verts);
+ glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2*sizeof(GLfloat),
+ texCoords);
+ glEnableVertexAttribArray(0);
+ glEnableVertexAttribArray(1);
+
+
+ prog4 = glCreateProgram();
+ glAttachShader(prog4, vs1);
+ glAttachShader(prog4, fs4);
+ glBindAttribLocation(prog4, 1, "textureCoords");
+ glLinkProgram(prog4);
+ glUseProgram(prog4);
+
+ glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat),
+ verts);
+ glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2*sizeof(GLfloat),
+ texCoords);
+ glEnableVertexAttribArray(0);
+ glEnableVertexAttribArray(1);
+
+
+ prog5 = glCreateProgram();
+ glAttachShader(prog5, vs1);
+ glAttachShader(prog5, fs5);
+ glBindAttribLocation(prog5, 1, "textureCoords");
+ glLinkProgram(prog5);
+ glUseProgram(prog5);
+
+ glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3*sizeof(GLfloat),
+ verts);
+ glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2*sizeof(GLfloat),
+ texCoords);
+ glEnableVertexAttribArray(0);
+ glEnableVertexAttribArray(1);
}
static void
@@ -233,10 +344,28 @@ piglit_display(void)
glUseProgram(prog2);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+ glTranslatef(75.0, 0.0, 0.0);
+
+ glUseProgram(prog3);
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+ glTranslatef(75.0, 0.0, 0.0);
+
+ glUseProgram(prog4);
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
+ glTranslatef(75.0, 0.0, 0.0);
+
+ glUseProgram(prog5);
+ glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+
glPopMatrix();
pass = pass && piglit_probe_pixel_rgb(132, 125, green);
pass = pass && piglit_probe_pixel_rgb(205, 125, deriv);
+ pass = pass && piglit_probe_pixel_rgb(280, 125, deriv);
+ pass = pass && piglit_probe_pixel_rgb(355, 125, deriv);
+ pass = pass && piglit_probe_pixel_rgb(430, 125, deriv);
glFinish();
piglit_present_results();
--
1.9.1
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