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db7f087953
This test wasn't actually explicitly clearing the background to black it was simply a fluke that some drivers clear the background when allocating a new framebuffer. Reviewed-by: Neil Roberts <neil@linux.intel.com>
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
#include <cogl/cogl.h>
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#include <glib.h>
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#include <stdio.h>
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CoglColor black;
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int
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main (int argc, char **argv)
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{
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CoglContext *ctx;
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CoglOnscreen *onscreen;
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CoglFramebuffer *fb;
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GError *error = NULL;
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CoglVertexP2C4 triangle_vertices[] = {
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{0, 0.7, 0xff, 0x00, 0x00, 0x80},
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{-0.7, -0.7, 0x00, 0xff, 0x00, 0xff},
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{0.7, -0.7, 0x00, 0x00, 0xff, 0xff}
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};
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CoglPrimitive *triangle;
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ctx = cogl_context_new (NULL, &error);
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if (!ctx) {
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fprintf (stderr, "Failed to create context: %s\n", error->message);
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return 1;
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}
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onscreen = cogl_onscreen_new (ctx, 640, 480);
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/* Eventually there will be an implicit allocate on first use so this
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* will become optional... */
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fb = COGL_FRAMEBUFFER (onscreen);
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if (!cogl_framebuffer_allocate (fb, &error)) {
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fprintf (stderr, "Failed to allocate framebuffer: %s\n", error->message);
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return 1;
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}
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cogl_onscreen_show (onscreen);
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cogl_push_framebuffer (fb);
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triangle = cogl_primitive_new_p2c4 (COGL_VERTICES_MODE_TRIANGLES,
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3, triangle_vertices);
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for (;;) {
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cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
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cogl_primitive_draw (triangle);
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cogl_framebuffer_swap_buffers (fb);
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}
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return 0;
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}
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