mesa: Raise INVALID_VALUE from glCreateShaderProgramv if count < 0

According to OpenGL version 4.5 and OpenGL ES 3.1 standards, section 7.3:
GL_INVALID_VALUE should be generated, if count is less than 0.

V2: Changed title, eased Open GL ES 3.1 restriction and added comments.

Signed-off-by: Marta Lofstedt <[email protected]>
Reviewed-by: Timothy Arceri <[email protected]>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index f9a7d130f9c..16222747905 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -2003,6 +2003,15 @@ _mesa_create_shader_program(struct gl_context* ctx, GLboolean separate,
    const GLuint shader = create_shader(ctx, type);
    GLuint program = 0;
 
+   /*
+    * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
+    * GL_INVALID_VALUE should be generated if count < 0
+    */
+   if (count < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glCreateShaderProgram (count < 0)");
+      return program;
+   }
+
    if (shader) {
       _mesa_ShaderSource(shader, count, strings, NULL);