[Piglit] [PATCH] Fix piglit_probe_pixel_rgb on GLES2

[Rhys Perry]

GLES2 requires GL_RGBA to be used with GL_UNSIGNED_BYTE in glReadPixels
---
 tests/util/piglit-util-gl.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/tests/util/piglit-util-gl.c b/tests/util/piglit-util-gl.c
index df39c1c87..be060aae5 100644
--- a/tests/util/piglit-util-gl.c
+++ b/tests/util/piglit-util-gl.c
@@ -1017,7 +1017,7 @@ static GLfloat *
 read_pixels_float(GLint x, GLint y, GLsizei width, GLsizei height,
                  GLenum format, GLfloat *pixels)
 {
-       GLubyte *pixels_b;
+       uint8_t pixels_b[4];
        unsigned i, ncomponents;
 
        ncomponents = width * height * piglit_num_components(format);
@@ -1029,11 +1029,9 @@ read_pixels_float(GLint x, GLint y, GLsizei width, 
GLsizei height,
                return pixels;
        }
 
-       pixels_b = malloc(ncomponents * sizeof(GLubyte));
-       glReadPixels(x, y, width, height, format, GL_UNSIGNED_BYTE, pixels_b);
+       glReadPixels(x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels_b);
        for (i = 0; i < ncomponents; i++)
                pixels[i] = pixels_b[i] / 255.0;
-       free(pixels_b);
        return pixels;
 }
 
-- 
2.14.3

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