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6d51a18e7c
This adds a new function to enable per-vertex point size on a pipeline. This can be set with cogl_pipeline_set_per_vertex_point_size(). Once enabled the point size can be set either by drawing with an attribute named 'cogl_point_size_in' or by writing to the 'cogl_point_size_out' builtin from a snippet. There is a feature flag which must be checked for before using per-vertex point sizes. This will only be set on GL >= 2.0 or on GLES 2.0. GL will only let you set a per-vertex point size from GLSL by writing to gl_PointSize. This is only available in GL2 and not in the older GLSL extensions. The per-vertex point size has its own pipeline state flag so that it can be part of the state that affects vertex shader generation. Having to enable the per vertex point size with a separate function is a bit awkward. Ideally it would work like the color attribute where you can just set it for every vertex in your primitive with cogl_pipeline_set_color or set it per-vertex by just using the attribute. This is harder to get working with the point size because we need to generate a different vertex shader depending on what attributes are bound. I think if we wanted to make this work transparently we would still want to internally have a pipeline property describing whether the shader was generated with per-vertex support so that it would work with the shader cache correctly. Potentially we could make the per-vertex property internal and automatically make a weak pipeline whenever the attribute is bound. However we would then also need to automatically detect when an application is writing to cogl_point_size_out from a snippet. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 8495d9c1c15ce389885a9356d965eabd97758115) Conflicts: cogl/cogl-context.c cogl/cogl-pipeline-private.h cogl/cogl-pipeline.c cogl/cogl-private.h cogl/driver/gl/cogl-pipeline-progend-fixed.c cogl/driver/gl/gl/cogl-pipeline-progend-fixed-arbfp.c
158 lines
5.2 KiB
C
158 lines
5.2 KiB
C
#ifndef _TEST_UTILS_H_
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#define _TEST_UTILS_H_
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#include <cogl/cogl.h>
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#include <glib.h>
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/* We don't really care about functions that are defined without a
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header for the unit tests so we can just disable it here */
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#ifdef __GNUC__
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#pragma GCC diagnostic ignored "-Wmissing-declarations"
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#endif
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typedef enum _TestFlags
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{
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TEST_KNOWN_FAILURE = 1<<0,
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TEST_REQUIREMENT_GL = 1<<1,
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TEST_REQUIREMENT_NPOT = 1<<2,
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TEST_REQUIREMENT_TEXTURE_3D = 1<<3,
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TEST_REQUIREMENT_TEXTURE_RECTANGLE = 1<<4,
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TEST_REQUIREMENT_POINT_SPRITE = 1<<5,
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TEST_REQUIREMENT_GLES2_CONTEXT = 1<<6,
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TEST_REQUIREMENT_MAP_WRITE = 1<<7,
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TEST_REQUIREMENT_GLSL = 1<<8,
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TEST_REQUIREMENT_OFFSCREEN = 1<<9,
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TEST_REQUIREMENT_FENCE = 1<<10,
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TEST_REQUIREMENT_PER_VERTEX_POINT_SIZE = 1<<11
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} TestFlags;
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extern CoglContext *test_ctx;
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extern CoglFramebuffer *test_fb;
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void
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test_utils_init (TestFlags requirement_flags,
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TestFlags known_failure_flags);
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void
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test_utils_fini (void);
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/*
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* test_utils_check_pixel:
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* @framebuffer: The #CoglFramebuffer to read from
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* @x: x co-ordinate of the pixel to test
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* @y: y co-ordinate of the pixel to test
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* @pixel: An integer of the form 0xRRGGBBAA representing the expected
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* pixel value
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*
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* This performs reads a pixel on the given cogl @framebuffer and
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* asserts that it matches the given color. The alpha channel of the
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* color is ignored. The pixels are converted to a string and compared
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* with g_assert_cmpstr so that if the comparison fails then the
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* assert will display a meaningful message
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*/
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void
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test_utils_check_pixel (CoglFramebuffer *framebuffer,
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int x, int y, uint32_t expected_pixel);
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/**
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* @framebuffer: The #CoglFramebuffer to read from
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* @x: x co-ordinate of the pixel to test
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* @y: y co-ordinate of the pixel to test
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* @pixel: An integer of the form 0xRRGGBBAA representing the expected
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* pixel value
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*
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* This performs reads a pixel on the given cogl @framebuffer and
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* asserts that it matches the given color. The alpha channel is also
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* checked unlike with test_utils_check_pixel(). The pixels are
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* converted to a string and compared with g_assert_cmpstr so that if
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* the comparison fails then the assert will display a meaningful
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* message.
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*/
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void
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test_utils_check_pixel_and_alpha (CoglFramebuffer *fb,
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int x, int y, uint32_t expected_pixel);
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/*
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* test_utils_check_pixel:
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* @framebuffer: The #CoglFramebuffer to read from
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* @x: x co-ordinate of the pixel to test
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* @y: y co-ordinate of the pixel to test
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* @pixel: An integer of the form 0xrrggbb representing the expected pixel value
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*
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* This performs reads a pixel on the given cogl @framebuffer and
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* asserts that it matches the given color. The alpha channel of the
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* color is ignored. The pixels are converted to a string and compared
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* with g_assert_cmpstr so that if the comparison fails then the
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* assert will display a meaningful message
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*/
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void
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test_utils_check_pixel_rgb (CoglFramebuffer *framebuffer,
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int x, int y, int r, int g, int b);
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/*
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* test_utils_check_region:
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* @framebuffer: The #CoglFramebuffer to read from
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* @x: x co-ordinate of the region to test
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* @y: y co-ordinate of the region to test
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* @width: width of the region to test
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* @height: height of the region to test
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* @pixel: An integer of the form 0xrrggbb representing the expected region color
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*
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* Performs a read pixel on the specified region of the given cogl
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* @framebuffer and asserts that it matches the given color. The alpha
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* channel of the color is ignored. The pixels are converted to a
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* string and compared with g_assert_cmpstr so that if the comparison
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* fails then the assert will display a meaningful message
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*/
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void
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test_utils_check_region (CoglFramebuffer *framebuffer,
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int x, int y,
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int width, int height,
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uint32_t expected_rgba);
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/*
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* test_utils_compare_pixel:
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* @screen_pixel: A pixel stored in memory
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* @expected_pixel: The expected RGBA value
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*
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* Compares a pixel from a buffer to an expected value. The pixels are
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* converted to a string and compared with g_assert_cmpstr so that if
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* the comparison fails then the assert will display a meaningful
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* message.
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*/
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void
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test_utils_compare_pixel (const uint8_t *screen_pixel, uint32_t expected_pixel);
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/*
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* test_utils_compare_pixel_and_alpha:
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* @screen_pixel: A pixel stored in memory
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* @expected_pixel: The expected RGBA value
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*
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* Compares a pixel from a buffer to an expected value. This is
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* similar to test_utils_compare_pixel() except that it doesn't ignore
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* the alpha component.
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*/
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void
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test_utils_compare_pixel_and_alpha (const uint8_t *screen_pixel,
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uint32_t expected_pixel);
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/*
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* test_utils_create_color_texture:
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* @context: A #CoglContext
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* @color: A color to put in the texture
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*
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* Creates a 1x1-pixel RGBA texture filled with the given color.
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*/
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CoglTexture *
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test_utils_create_color_texture (CoglContext *context,
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uint32_t color);
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/* cogl_test_verbose:
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*
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* Queries if the user asked for verbose output or not.
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*/
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CoglBool
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cogl_test_verbose (void);
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#endif /* _TEST_UTILS_H_ */
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