[Piglit] [PATCH 10/13] shader_runner: Add GLES workarounds

[Ian Romanick]

On 12/03/2012 09:59 PM, Chad Versace wrote:
> Since piglit-dispatch does not yet support GLES, in order to build
> shader_runner.c against GLES3 we need some workarounds.
>
> 1. Add file shader_runner_gles_workarounds.h.
>
> 2. Let shader_runner.c include it.
>
> 3. For each GLenum used by shader_runner.c that is not found in
>     <GLES3/gl3.h>, redefine it in shader_runner_gles_workarounds.h to have
>     the same values as in <GL/gl*.h>.
>
> 4. For each function used by shader_runner.c that is not found in
>     <GLES3/gl3.h>, define a macro that prints an error message and skips
>     the test, just as piglit-dispatch does for unsupported functions.
>
> Signed-off-by: Chad Versace <chad.versace at linux.intel.com>
> ---
>   tests/shaders/shader_runner.c                  |   2 +
>   tests/shaders/shader_runner_gles_workarounds.h | 145 +++++++++++++++++++++++++
>   2 files changed, 147 insertions(+)
>   create mode 100644 tests/shaders/shader_runner_gles_workarounds.h
>
> diff --git a/tests/shaders/shader_runner.c b/tests/shaders/shader_runner.c
> index 11753f0..255d88d 100644
> --- a/tests/shaders/shader_runner.c
> +++ b/tests/shaders/shader_runner.c
> @@ -36,6 +36,8 @@
>   #include "piglit-util-gl-common.h"
>   #include "piglit-vbo.h"
>
> +#include "shader_runner_gles_workarounds.h"
> +
>   static void
>   get_required_versions(const char *script_name,
>   		      struct piglit_gl_test_config *config);
> diff --git a/tests/shaders/shader_runner_gles_workarounds.h b/tests/shaders/shader_runner_gles_workarounds.h
> new file mode 100644
> index 0000000..bde115e
> --- /dev/null
> +++ b/tests/shaders/shader_runner_gles_workarounds.h
> @@ -0,0 +1,145 @@
> +/*
> + * Copyright © 2012 Intel Corporation
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice (including the next
> + * paragraph) shall be included in all copies or substantial portions of the
> + * Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
> + * DEALINGS IN THE SOFTWARE.
> + */
> +
> +/**
> + * \file
> + * \brief Workarounds for building with GLES.
> + *
> + * When building shader_runner against GLES3 and libpiglitutil_gles3, there
> + * are many macros and symbols that are not defined. This header defines such
> + * macros to have the same value found in <GL/gl*.h>, and defines such
> + * functions to print an error message and then report PIGLIT_SKIP, just as
> + * piglit-dispatch does for unsupported extension functions.
> + */
> +
> +#include <stdio.h>
> +#include "piglit-util.h"
> +
> +#define GL_CLIP_PLANE0 0x3000
> +#define GL_CLIP_PLANE1 0x3001
> +#define GL_CLIP_PLANE2 0x3002
> +#define GL_CLIP_PLANE3 0x3003
> +#define GL_CLIP_PLANE4 0x3004
> +#define GL_CLIP_PLANE5 0x3005
> +#define GL_COMPARE_R_TO_TEXTURE 0x884E
> +#define GL_DEPTH_TEXTURE_MODE 0x884B
> +#define GL_FLAT 0x1D00
> +#define GL_FRAGMENT_PROGRAM_ARB 0x8804
> +#define GL_GEOMETRY_SHADER 0x8DD9
> +#define GL_INTENSITY 0x8049
> +#define GL_MAX_CLIP_PLANES 0x0D32
> +#define GL_POLYGON 0x0009
> +#define GL_POLYGON_OFFSET_EXT 0x8037
> +#define GL_QUADS 0x0007
> +#define GL_QUAD_STRIP 0x0008
> +#define GL_SMOOTH 0x1D01
> +#define GL_TEXTURE_1D 0x0DE0
> +#define GL_TEXTURE_1D_ARRAY 0x8C18
> +#define GL_TEXTURE_1D_ARRAY_EXT 0x8C18
> +#define GL_TEXTURE_CUBE_MAP_ARRAY 0x9009
> +#define GL_TEXTURE_RECTANGLE 0x84F5
> +#define GL_VERTEX_ARRAY 0x8074
> +#define GL_VERTEX_PROGRAM_ARB 0x8620
> +#define GL_VERTEX_PROGRAM_ARB 0x8620
> +#define GL_VERTEX_PROGRAM_TWO_SIDE 0x8643
> +#define GL_WRITE_ONLY 0x88B9
> +
> +static void __attribute__((unused))
> +unsupported_function(const char *name)
> +{
> +	printf("Function \"%s\" not supported on this implementation\n", name);
> +	piglit_report_result(PIGLIT_SKIP);
> +}
> +
> +/**
> + * This macro should be sufficient for most functions. If one of the actual
> + * function's parameters causes an unused-variable warning, you must
> + * special-case the function. See glBindProgramARB for example.
> + *
> + * GLES doesn't exist on Windows. So we're free to use the GCC/Clang extension
> + * for statement expressions.
> + */
> +#define UNSUPPORTED_FUNCTION(name, return_value) \
> +	({ \
> +	 	unsupported_function(#name); \
> +	 	return_value; \
> +	 })
> +
> +#ifndef glBindProgramARB
> +#define glBindProgramARB(a, b) \
> +	({ \
> +	 	(void) a; \
> +	 	(void) b; \
> +		unsupported_function("glBindProgramARB"); \
> +	 })
> +#endif
> +
> +#ifndef glMapBuffer
> +#define glMapBuffer(...) UNSUPPORTED_FUNCTION(glMapBuffer, NULL)
> +#endif

ES2 has glMapBufferOES, and ES3 has glMapBufferRange.  Perhaps we could 
work around this one differently?  I don't recall how it's used in 
shader_runner...

> +
> +#ifndef glVertexPointer
> +#define glVertexPointer(a, b, c, d) \
> +	({ \
> +	 	(void) a; \
> +	 	(void) b; \
> +	 	(void) c; \
> +	 	(void) d; \
> +		unsupported_function("glVertexPointer"); \
> +	 })
> +#endif
> +
> +#ifndef glEnableClientState
> +#define glEnableClientState(...) UNSUPPORTED_FUNCTION(glEnableClientState, 0)
> +#endif
> +
> +#ifndef glDisableClientState
> +#define glDisableClientState(...) UNSUPPORTED_FUNCTION(glDisableClientState, 0)
> +#endif
> +
> +#ifndef glClipPlane
> +#define glClipPlane(...) UNSUPPORTED_FUNCTION(glClipPlane, 0)
> +#endif
> +
> +#ifndef glShadeModel
> +#define glShadeModel(...) UNSUPPORTED_FUNCTION(glShadeModel, 0)
> +#endif
> +
> +#ifndef glProgramEnvParameter4fvARB
> +#define glProgramEnvParameter4fvARB(...) UNSUPPORTED_FUNCTION(glProgramEnvParameter4fvARB, 0)
> +#endif
> +
> +#ifndef glProgramLocalParameter4fvARB
> +#define glProgramLocalParameter4fvARB(...) UNSUPPORTED_FUNCTION(glProgramLocalParameter4fvARB, 0)
> +#endif
> +
> +#ifndef PIGLIT_USE_OPENGL
> +
> +	#define piglit_frustum_projection(...) UNSUPPORTED_FUNCTION(piglit_frustum_projection, 0)
> +	#define piglit_gen_ortho_projection(...) UNSUPPORTED_FUNCTION(piglit_gen_ortho_projection, 0)
> +	#define piglit_miptree_texture(...) UNSUPPORTED_FUNCTION(piglit_miptree_texture, 0)
> +	#define piglit_depth_texture(...) UNSUPPORTED_FUNCTION(piglit_depth_texture, 0)
> +	#define piglit_ortho_projection(...) UNSUPPORTED_FUNCTION(piglit_ortho_projection, 0)
> +	#define piglit_compile_program(...) UNSUPPORTED_FUNCTION(piglit_compile_program, 0)
> +
> +#endif /*PIGLIT_USE_OPENGL*/
>