mutter/tests/conform/test-custom-attributes.c

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#include <cogl/cogl.h>
#include <string.h>
#include "test-utils.h"
typedef struct _TestState
{
CoglPipeline *pipeline;
} TestState;
typedef struct
{
int16_t x, y;
float r, g, b, a;
} FloatVert;
typedef struct
{
int16_t x, y;
uint8_t r, g, b, a;
} ByteVert;
typedef struct
{
int16_t x, y;
int16_t r, g, b, a;
} ShortVert;
static void
test_float_verts (TestState *state, int offset_x, int offset_y)
{
CoglAttribute *attributes[2];
CoglAttributeBuffer *buffer;
CoglPrimitive *primitive;
static const FloatVert float_verts[] =
{
{ 0, 10, /**/ 1, 0, 0, 1 },
{ 10, 10, /**/ 1, 0, 0, 1 },
{ 5, 0, /**/ 1, 0, 0, 1 },
{ 10, 10, /**/ 0, 1, 0, 1 },
{ 20, 10, /**/ 0, 1, 0, 1 },
{ 15, 0, /**/ 0, 1, 0, 1 }
};
buffer = cogl_attribute_buffer_new (test_ctx,
sizeof (float_verts), float_verts);
attributes[0] = cogl_attribute_new (buffer,
"cogl_position_in",
sizeof (FloatVert),
G_STRUCT_OFFSET (FloatVert, x),
2, /* n_components */
COGL_ATTRIBUTE_TYPE_SHORT);
attributes[1] = cogl_attribute_new (buffer,
"color",
sizeof (FloatVert),
G_STRUCT_OFFSET (FloatVert, r),
4, /* n_components */
COGL_ATTRIBUTE_TYPE_FLOAT);
cogl_framebuffer_push_matrix (test_fb);
cogl_framebuffer_translate (test_fb, offset_x, offset_y, 0.0f);
primitive = cogl_primitive_new_with_attributes (COGL_VERTICES_MODE_TRIANGLES,
6, /* n_vertices */
attributes,
2); /* n_attributes */
cogl_primitive_draw (primitive, test_fb, state->pipeline);
cogl_object_unref (primitive);
cogl_framebuffer_pop_matrix (test_fb);
cogl_object_unref (attributes[1]);
cogl_object_unref (attributes[0]);
cogl_object_unref (buffer);
test_utils_check_pixel (test_fb, offset_x + 5, offset_y + 5, 0xff0000ff);
test_utils_check_pixel (test_fb, offset_x + 15, offset_y + 5, 0x00ff00ff);
}
static void
test_byte_verts (TestState *state, int offset_x, int offset_y)
{
CoglAttribute *attributes[2];
CoglAttributeBuffer *buffer, *unnorm_buffer;
CoglPrimitive *primitive;
static const ByteVert norm_verts[] =
{
{ 0, 10, /**/ 255, 0, 0, 255 },
{ 10, 10, /**/ 255, 0, 0, 255 },
{ 5, 0, /**/ 255, 0, 0, 255 },
{ 10, 10, /**/ 0, 255, 0, 255 },
{ 20, 10, /**/ 0, 255, 0, 255 },
{ 15, 0, /**/ 0, 255, 0, 255 }
};
static const ByteVert unnorm_verts[] =
{
{ 0, 0, /**/ 0, 0, 1, 1 },
{ 0, 0, /**/ 0, 0, 1, 1 },
{ 0, 0, /**/ 0, 0, 1, 1 },
};
buffer = cogl_attribute_buffer_new (test_ctx,
sizeof (norm_verts), norm_verts);
attributes[0] = cogl_attribute_new (buffer,
"cogl_position_in",
sizeof (ByteVert),
G_STRUCT_OFFSET (ByteVert, x),
2, /* n_components */
COGL_ATTRIBUTE_TYPE_SHORT);
attributes[1] = cogl_attribute_new (buffer,
"color",
sizeof (ByteVert),
G_STRUCT_OFFSET (ByteVert, r),
4, /* n_components */
COGL_ATTRIBUTE_TYPE_UNSIGNED_BYTE);
cogl_attribute_set_normalized (attributes[1], TRUE);
cogl_framebuffer_push_matrix (test_fb);
cogl_framebuffer_translate (test_fb, offset_x, offset_y, 0.0f);
primitive = cogl_primitive_new_with_attributes (COGL_VERTICES_MODE_TRIANGLES,
6, /* n_vertices */
attributes,
2); /* n_attributes */
cogl_primitive_draw (primitive, test_fb, state->pipeline);
cogl_object_unref (primitive);
cogl_object_unref (attributes[1]);
/* Test again with unnormalized attributes */
unnorm_buffer = cogl_attribute_buffer_new (test_ctx,
sizeof (unnorm_verts),
unnorm_verts);
attributes[1] = cogl_attribute_new (unnorm_buffer,
"color",
sizeof (ByteVert),
G_STRUCT_OFFSET (ByteVert, r),
4, /* n_components */
COGL_ATTRIBUTE_TYPE_BYTE);
cogl_framebuffer_translate (test_fb, 20, 0, 0);
primitive = cogl_primitive_new_with_attributes (COGL_VERTICES_MODE_TRIANGLES,
3, /* n_vertices */
attributes,
2); /* n_attributes */
cogl_primitive_draw (primitive, test_fb, state->pipeline);
cogl_object_unref (primitive);
cogl_framebuffer_pop_matrix (test_fb);
cogl_object_unref (attributes[0]);
cogl_object_unref (attributes[1]);
cogl_object_unref (buffer);
cogl_object_unref (unnorm_buffer);
test_utils_check_pixel (test_fb, offset_x + 5, offset_y + 5, 0xff0000ff);
test_utils_check_pixel (test_fb, offset_x + 15, offset_y + 5, 0x00ff00ff);
test_utils_check_pixel (test_fb, offset_x + 25, offset_y + 5, 0x0000ffff);
}
static void
test_short_verts (TestState *state, int offset_x, int offset_y)
{
CoglAttribute *attributes[2];
CoglAttributeBuffer *buffer;
CoglPipeline *pipeline, *pipeline2;
CoglSnippet *snippet;
CoglPrimitive *primitive;
static const ShortVert short_verts[] =
{
{ -10, -10, /**/ 0xffff, 0, 0, 0xffff },
{ -1, -10, /**/ 0xffff, 0, 0, 0xffff },
{ -5, -1, /**/ 0xffff, 0, 0, 0xffff }
};
pipeline = cogl_pipeline_copy (state->pipeline);
cogl_pipeline_set_color4ub (pipeline, 255, 0, 0, 255);
buffer = cogl_attribute_buffer_new (test_ctx,
sizeof (short_verts), short_verts);
attributes[0] = cogl_attribute_new (buffer,
"cogl_position_in",
sizeof (ShortVert),
G_STRUCT_OFFSET (ShortVert, x),
2, /* n_components */
COGL_ATTRIBUTE_TYPE_SHORT);
attributes[1] = cogl_attribute_new (buffer,
"color",
sizeof (ShortVert),
G_STRUCT_OFFSET (ShortVert, r),
4, /* n_components */
COGL_ATTRIBUTE_TYPE_UNSIGNED_SHORT);
cogl_attribute_set_normalized (attributes[1], TRUE);
cogl_framebuffer_push_matrix (test_fb);
cogl_framebuffer_translate (test_fb,
offset_x + 10.0f,
offset_y + 10.0f,
0.0f);
primitive = cogl_primitive_new_with_attributes (COGL_VERTICES_MODE_TRIANGLES,
3, /* n_vertices */
attributes,
2); /* n_attributes */
cogl_primitive_draw (primitive, test_fb, pipeline);
cogl_object_unref (primitive);
cogl_framebuffer_pop_matrix (test_fb);
cogl_object_unref (attributes[0]);
/* Test again treating the attribute as unsigned */
attributes[0] = cogl_attribute_new (buffer,
"cogl_position_in",
sizeof (ShortVert),
G_STRUCT_OFFSET (ShortVert, x),
2, /* n_components */
COGL_ATTRIBUTE_TYPE_UNSIGNED_SHORT);
/* XXX: this is a hack to force the pipeline to use the glsl backend
* because we know it's not possible to test short vertex position
* components with the legacy GL backend since which might otherwise
* be used internally... */
pipeline2 = cogl_pipeline_new (test_ctx);
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_VERTEX,
"attribute vec4 color;",
"cogl_color_out = vec4 (0.0, 1.0, 0.0, 1.0);");
cogl_pipeline_add_snippet (pipeline2, snippet);
cogl_framebuffer_push_matrix (test_fb);
cogl_framebuffer_translate (test_fb,
offset_x + 10.0f - 65525.0f,
offset_y - 65525,
0.0f);
primitive = cogl_primitive_new_with_attributes (COGL_VERTICES_MODE_TRIANGLES,
3, /* n_vertices */
attributes,
1); /* n_attributes */
cogl_primitive_draw (primitive, test_fb, pipeline2);
cogl_object_unref (primitive);
cogl_framebuffer_pop_matrix (test_fb);
cogl_object_unref (attributes[0]);
cogl_object_unref (pipeline2);
cogl_object_unref (pipeline);
cogl_object_unref (buffer);
test_utils_check_pixel (test_fb, offset_x + 5, offset_y + 5, 0xff0000ff);
test_utils_check_pixel (test_fb, offset_x + 15, offset_y + 5, 0x00ff00ff);
}
static void
paint (TestState *state)
{
cogl_framebuffer_clear4f (test_fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
test_float_verts (state, 0, 0);
test_byte_verts (state, 0, 10);
test_short_verts (state, 0, 20);
}
void
test_custom_attributes (void)
{
CoglSnippet *snippet;
TestState state;
cogl_framebuffer_orthographic (test_fb,
0, 0,
cogl_framebuffer_get_width (test_fb),
cogl_framebuffer_get_height (test_fb),
-1,
100);
state.pipeline = cogl_pipeline_new (test_ctx);
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_VERTEX,
"attribute vec4 color;",
"cogl_color_out = color;");
cogl_pipeline_add_snippet (state.pipeline, snippet);
paint (&state);
cogl_object_unref (state.pipeline);
cogl_object_unref (snippet);
if (cogl_test_verbose ())
g_print ("OK\n");
}