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#include <cogl/cogl.h>
#include <string.h>
#include "test-utils.h"
typedef struct _TestState
{
int paddiing;
} TestState;
static CoglTexture *
create_dummy_texture (void)
{
/* Create a dummy 1x1 green texture to replace the color from the
vertex shader */
static const uint8_t data[4] = { 0x00, 0xff, 0x00, 0xff };
return test_utils_texture_new_from_data (test_ctx,
1, 1, /* size */
TEST_UTILS_TEXTURE_NONE,
COGL_PIXEL_FORMAT_RGB_888,
COGL_PIXEL_FORMAT_ANY,
4, /* rowstride */
data);
}
static void
paint (TestState *state)
{
CoglPipeline *pipeline = cogl_pipeline_new (test_ctx);
CoglTexture *tex;
CoglError *error = NULL;
CoglSnippet *snippet;
cogl_framebuffer_clear4f (test_fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
/* Set the primary vertex color as red */
cogl_pipeline_set_color4f (pipeline, 1, 0, 0, 1);
/* Override the vertex color in the texture environment with a
constant green color provided by a texture */
tex = create_dummy_texture ();
cogl_pipeline_set_layer_texture (pipeline, 0, tex);
cogl_object_unref (tex);
if (!cogl_pipeline_set_layer_combine (pipeline, 0,
"RGBA=REPLACE(TEXTURE)",
&error))
{
g_warning ("Error setting layer combine: %s", error->message);
g_assert_not_reached ();
}
/* Set up a dummy vertex shader that does nothing but the usual
modelview-projection transform */
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_VERTEX,
NULL, /* no declarations */
NULL); /* no "post" code */
cogl_snippet_set_replace (snippet,
" cogl_position_out = "
"cogl_modelview_projection_matrix * "
"cogl_position_in;\n"
" cogl_color_out = cogl_color_in;\n"
" cogl_tex_coord0_out = cogl_tex_coord_in;\n");
/* Draw something without the snippet */
cogl_framebuffer_draw_rectangle (test_fb, pipeline, 0, 0, 50, 50);
/* Draw it again using the snippet. It should look exactly the same */
cogl_pipeline_add_snippet (pipeline, snippet);
cogl_object_unref (snippet);
cogl_framebuffer_draw_rectangle (test_fb, pipeline, 50, 0, 100, 50);
cogl_object_unref (pipeline);
}
static void
validate_result (CoglFramebuffer *framebuffer)
{
/* Non-shader version */
test_utils_check_pixel (framebuffer, 25, 25, 0x00ff0000);
/* Shader version */
test_utils_check_pixel (framebuffer, 75, 25, 0x00ff0000);
}
void
test_just_vertex_shader (void)
{
TestState state;
cogl_framebuffer_orthographic (test_fb,
0, 0,
cogl_framebuffer_get_width (test_fb),
cogl_framebuffer_get_height (test_fb),
-1,
100);
paint (&state);
validate_result (test_fb);
if (cogl_test_verbose ())
g_print ("OK\n");
}
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