static void
test_replace_snippet(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
/* Test replacing a previous snippet */
pipeline = create_texture_pipeline(state);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
NULL,
"cg_color_out = vec4(0.5, 0.5, 0.5, 1.0);");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT, NULL, NULL);
cg_snippet_set_pre(snippet, "cg_color_out = vec4(1.0, 1.0, 1.0, 1.0);");
cg_snippet_set_replace(snippet,
"cg_color_out *= vec4(1.0, 0.0, 0.0, 1.0);");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
cg_framebuffer_draw_textured_rectangle(test_fb,
pipeline,
100, 0, 110, 10,
0, 0, 0, 0);
cg_object_unref(pipeline);
test_cg_check_pixel(test_fb, 105, 5, 0xff0000ff);
}
static void
shared_uniform(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
int location;
/* Snippets sharing a uniform across the vertex and fragment
hooks */
pipeline = cg_pipeline_new(test_dev);
location = cg_pipeline_get_uniform_location(pipeline, "a_value");
cg_pipeline_set_uniform_1f(pipeline, location, 0.25f);
cg_pipeline_set_color4ub(pipeline, 255, 0, 0, 255);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_VERTEX,
"uniform float a_value;",
"cg_color_out.b += a_value;");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
"uniform float a_value;",
"cg_color_out.b += a_value;");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
cg_framebuffer_draw_rectangle(test_fb,
pipeline,
20, 0, 30, 10);
cg_object_unref(pipeline);
test_cg_check_pixel(test_fb, 25, 5, 0xff0080ff);
}
static void
test_pipeline_caching(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
/* Check that the pipeline caching works when unrelated pipelines
share snippets state. It's too hard to actually assert this in
the conformance test but at least it should be possible to see by
setting CG_DEBUG=show-source to check whether this shader gets
generated twice */
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
"/* This comment should only be seen ONCE\n"
" when CG_DEBUG=show-source is true\n"
" even though it is used in two different\n"
" unrelated pipelines */",
"cg_color_out = vec4(0.0, 1.0, 0.0, 1.0);\n");
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_add_snippet(pipeline, snippet);
cg_framebuffer_draw_rectangle(test_fb, pipeline, 50, 0, 60, 10);
cg_object_unref(pipeline);
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_add_snippet(pipeline, snippet);
cg_framebuffer_draw_rectangle(test_fb, pipeline, 60, 0, 70, 10);
cg_object_unref(pipeline);
cg_object_unref(snippet);
test_cg_check_pixel(test_fb, 55, 5, 0x00ff00ff);
test_cg_check_pixel(test_fb, 65, 5, 0x00ff00ff);
}
static void
test_global_vertex_hook(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
pipeline = cg_pipeline_new(test_dev);
/* Creates a function in the global declarations hook which is used
* by a subsequent snippet. The subsequent snippets replace any
* previous snippets but this shouldn't prevent the global
* declarations from being generated */
snippet = cg_snippet_new(CG_SNIPPET_HOOK_VERTEX_GLOBALS,
/* declarations */
"float\n"
"multiply_by_two(float number)\n"
"{\n"
" return number * 2.0;\n"
"}\n",
/* post */
"This string shouldn't be used so "
"we can safely put garbage in here.");
cg_snippet_set_pre(snippet,
"This string shouldn't be used so "
"we can safely put garbage in here.");
cg_snippet_set_replace(snippet,
"This string shouldn't be used so "
"we can safely put garbage in here.");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_VERTEX,
NULL, /* declarations */
NULL /* replace */);
cg_snippet_set_replace(snippet,
"cg_color_out.r = multiply_by_two(0.5);\n"
"cg_color_out.gba = vec3(0.0, 0.0, 1.0);\n"
"cg_position_out = cg_position_in;\n");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
cg_framebuffer_draw_rectangle(test_fb,
pipeline,
-1, 1,
10.0f * 2.0f / state->fb_width - 1.0f,
10.0f * 2.0f / state->fb_height - 1.0f);
cg_object_unref(pipeline);
test_cg_check_pixel(test_fb, 5, 5, 0xff0000ff);
}
static void
test_replace_string(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
/* Check the replace string */
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT, NULL, NULL);
cg_snippet_set_pre(snippet,
"cg_color_out = vec4(0.0, 0.5, 0.0, 1.0);");
/* Remove the generated output. If the replace string isn't working
then the code from the pre string would get overwritten with
white */
cg_snippet_set_replace(snippet, "/* do nothing */");
cg_snippet_set_post(snippet,
"cg_color_out += vec4(0.5, 0.0, 0.0, 1.0);");
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_add_snippet(pipeline, snippet);
cg_framebuffer_draw_rectangle(test_fb, pipeline, 70, 0, 80, 10);
cg_object_unref(pipeline);
cg_object_unref(snippet);
test_cg_check_pixel(test_fb, 75, 5, 0x808000ff);
}
static void
shared_variable_pre_post(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
/* Test that the pre string can declare variables used by the post
string */
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_set_color4ub(pipeline, 255, 255, 255, 255);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
NULL, /* declarations */
"cg_color_out = redvec;");
cg_snippet_set_pre(snippet, "vec4 redvec = vec4(1.0, 0.0, 0.0, 1.0);");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
cg_framebuffer_draw_rectangle(test_fb, pipeline, 40, 0, 50, 10);
cg_object_unref(pipeline);
test_cg_check_pixel(test_fb, 45, 5, 0xff0000ff);
}
static void
create_pipelines(cg_pipeline_t **pipelines, int n_pipelines)
{
int i;
for (i = 0; i < n_pipelines; i++) {
char *source = c_strdup_printf(" cg_color_out = "
"vec4 (%f, 0.0, 0.0, 1.0);\n",
i / 255.0f);
cg_snippet_t *snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
NULL, /* declarations */
source);
c_free(source);
pipelines[i] = cg_pipeline_new(test_dev);
cg_pipeline_add_snippet(pipelines[i], snippet);
cg_object_unref(snippet);
}
/* Test that drawing with them works. This should create the entries
* in the cache */
for (i = 0; i < n_pipelines; i++) {
cg_framebuffer_draw_rectangle(test_fb, pipelines[i], i, 0, i + 1, 1);
test_cg_check_pixel_rgb(test_fb, i, 0, i, 0, 0);
}
}
static void
test_snippet_order(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
/* Verify that the snippets are executed in the right order. We'll
replace the r component of the color in the pre sections of the
snippets and the g component in the post. The pre sections should
be executed in the reverse order they were added and the post
sections in the same order as they were added. Therefore the r
component should be taken from the the second snippet and the g
component from the first */
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_set_color4ub(pipeline, 0, 0, 0, 255);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
NULL,
"cg_color_out.g = 0.5;\n");
cg_snippet_set_pre(snippet, "cg_color_out.r = 0.5;\n");
cg_snippet_set_replace(snippet, "cg_color_out.ba = vec2(0.0, 1.0);");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
NULL,
"cg_color_out.g = 1.0;\n");
cg_snippet_set_pre(snippet, "cg_color_out.r = 1.0;\n");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
cg_framebuffer_draw_rectangle(test_fb, pipeline, 160, 0, 170, 10);
cg_object_unref(pipeline);
test_cg_check_pixel(test_fb, 165, 5, 0x80ff00ff);
}
static void
test_vertex_transform_hook(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
c_matrix_t identity_matrix;
c_matrix_t matrix;
int location;
/* Test the vertex transform hook */
c_matrix_init_identity(&identity_matrix);
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_set_color4ub(pipeline, 255, 0, 255, 255);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_VERTEX_TRANSFORM,
"uniform mat4 pmat;",
NULL);
cg_snippet_set_replace(snippet, "cg_position_out = "
"pmat * cg_position_in;");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
/* Copy the current projection matrix to a uniform */
cg_framebuffer_get_projection_matrix(test_fb, &matrix);
location = cg_pipeline_get_uniform_location(pipeline, "pmat");
cg_pipeline_set_uniform_matrix(pipeline,
location,
4, /* dimensions */
1, /* count */
false, /* don't transpose */
c_matrix_get_array(&matrix));
/* Replace the real projection matrix with the identity. This should
mess up the drawing unless the snippet replacement is working */
cg_framebuffer_set_projection_matrix(test_fb, &identity_matrix);
cg_framebuffer_draw_rectangle(test_fb, pipeline, 150, 0, 160, 10);
cg_object_unref(pipeline);
/* Restore the projection matrix */
cg_framebuffer_set_projection_matrix(test_fb, &matrix);
test_cg_check_pixel(test_fb, 155, 5, 0xff00ffff);
}
static void
lots_snippets(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
int location;
int i;
/* Lots of snippets on one pipeline */
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_set_color4ub(pipeline, 0, 0, 0, 255);
for(i = 0; i < 3; i++) {
char letter = 'x' + i;
char *uniform_name = c_strdup_printf("%c_value", letter);
char *declarations = c_strdup_printf("uniform float %s;\n",
uniform_name);
char *code = c_strdup_printf("cg_color_out.%c = %s;\n",
letter,
uniform_name);
location = cg_pipeline_get_uniform_location(pipeline, uniform_name);
cg_pipeline_set_uniform_1f(pipeline, location,(i + 1) * 0.1f);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
declarations,
code);
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
c_free(code);
c_free(uniform_name);
c_free(declarations);
}
cg_framebuffer_draw_rectangle(test_fb, pipeline, 30, 0, 40, 10);
cg_object_unref(pipeline);
test_cg_check_pixel(test_fb, 35, 5, 0x19334cff);
}
static void
simple_vertex_snippet(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
/* Simple vertex snippet */
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_set_color4ub(pipeline, 255, 0, 0, 255);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_VERTEX,
NULL,
"cg_color_out.b += 1.0;");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
cg_framebuffer_draw_rectangle(test_fb, pipeline, 10, 0, 20, 10);
cg_object_unref(pipeline);
test_cg_check_pixel(test_fb, 15, 5, 0xff00ffff);
}
static void
simple_fragment_snippet(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
/* Simple fragment snippet */
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_set_color4ub(pipeline, 255, 0, 0, 255);
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
NULL, /* declarations */
"cg_color_out.g += 1.0;");
cg_pipeline_add_snippet(pipeline, snippet);
cg_object_unref(snippet);
cg_framebuffer_draw_rectangle(test_fb, pipeline, 0, 0, 10, 10);
cg_object_unref(pipeline);
test_cg_check_pixel(test_fb, 5, 5, 0xffff00ff);
}
static void
test_naming_texture_units(TestState *state)
{
cg_pipeline_t *pipeline;
cg_snippet_t *snippet;
cg_texture_t *tex1, *tex2;
/* Test that we can sample from an arbitrary texture unit by naming
its layer number */
snippet = cg_snippet_new(CG_SNIPPET_HOOK_FRAGMENT,
NULL,
NULL);
cg_snippet_set_replace(snippet,
"cg_color_out = "
"texture2D(cg_sampler100, vec2(0.0, 0.0)) + "
"texture2D(cg_sampler200, vec2(0.0, 0.0));");
tex1 = test_cg_create_color_texture(test_dev, 0xff0000ff);
tex2 = test_cg_create_color_texture(test_dev, 0x00ff00ff);
pipeline = cg_pipeline_new(test_dev);
cg_pipeline_set_layer_texture(pipeline, 100, tex1);
cg_pipeline_set_layer_texture(pipeline, 200, tex2);
cg_pipeline_add_snippet(pipeline, snippet);
cg_framebuffer_draw_rectangle(test_fb, pipeline, 0, 0, 10, 10);
cg_object_unref(pipeline);
cg_object_unref(snippet);
cg_object_unref(tex1);
cg_object_unref(tex2);
test_cg_check_pixel(test_fb, 5, 5, 0xffff00ff);
}
