75 lines
2.1 KiB
C
75 lines
2.1 KiB
C
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#include <cogl/cogl.h>
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#include <string.h>
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#include "test-utils.h"
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#define TEX_WIDTH 8
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#define TEX_HEIGHT 8
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static CoglTexture2D *
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make_texture (void)
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{
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uint8_t tex_data[TEX_WIDTH * TEX_HEIGHT * 2], *p = tex_data;
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int x, y;
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for (y = 0; y < TEX_HEIGHT; y++)
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for (x = 0; x < TEX_WIDTH; x++)
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{
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*(p++) = x * 256 / TEX_WIDTH;
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*(p++) = y * 256 / TEX_HEIGHT;
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}
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return cogl_texture_2d_new_from_data (test_ctx,
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TEX_WIDTH, TEX_HEIGHT,
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COGL_PIXEL_FORMAT_RG_88,
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TEX_WIDTH * 2,
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tex_data,
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NULL);
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}
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void
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test_texture_rg (void)
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{
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CoglPipeline *pipeline;
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CoglTexture2D *tex;
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int fb_width, fb_height;
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int x, y;
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fb_width = cogl_framebuffer_get_width (test_fb);
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fb_height = cogl_framebuffer_get_height (test_fb);
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tex = make_texture ();
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g_assert (cogl_texture_get_components (tex) == COGL_TEXTURE_COMPONENTS_RG);
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pipeline = cogl_pipeline_new (test_ctx);
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cogl_pipeline_set_layer_texture (pipeline, 0, tex);
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cogl_pipeline_set_layer_filters (pipeline,
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0,
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COGL_PIPELINE_FILTER_NEAREST,
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COGL_PIPELINE_FILTER_NEAREST);
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cogl_framebuffer_draw_rectangle (test_fb,
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pipeline,
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-1.0f, 1.0f,
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1.0f, -1.0f);
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for (y = 0; y < TEX_HEIGHT; y++)
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for (x = 0; x < TEX_WIDTH; x++)
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{
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test_utils_check_pixel_rgb (test_fb,
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x * fb_width / TEX_WIDTH +
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fb_width / (TEX_WIDTH * 2),
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y * fb_height / TEX_HEIGHT +
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fb_height / (TEX_HEIGHT * 2),
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x * 256 / TEX_WIDTH,
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y * 256 / TEX_HEIGHT,
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0);
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}
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cogl_object_unref (pipeline);
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cogl_object_unref (tex);
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}
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