void
_cogl_shader_compile_real (CoglHandle handle,
CoglPipeline *pipeline)
{
CoglShader *shader = handle;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
#ifdef HAVE_COGL_GL
if (shader->language == COGL_SHADER_LANGUAGE_ARBFP)
{
#ifdef COGL_GL_DEBUG
GLenum gl_error;
#endif
if (shader->gl_handle)
return;
GE (ctx, glGenPrograms (1, &shader->gl_handle));
GE (ctx, glBindProgram (GL_FRAGMENT_PROGRAM_ARB, shader->gl_handle));
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_SHOW_SOURCE)))
g_message ("user ARBfp program:\n%s", shader->source);
#ifdef COGL_GL_DEBUG
_cogl_gl_util_clear_gl_errors (ctx);
#endif
ctx->glProgramString (GL_FRAGMENT_PROGRAM_ARB,
GL_PROGRAM_FORMAT_ASCII_ARB,
strlen (shader->source),
shader->source);
#ifdef COGL_GL_DEBUG
gl_error = _cogl_gl_util_get_error (ctx);
if (gl_error != GL_NO_ERROR)
{
g_warning ("%s: GL error (%d): Failed to compile ARBfp:\n%s\n%s",
G_STRLOC,
gl_error,
shader->source,
ctx->glGetString (GL_PROGRAM_ERROR_STRING_ARB));
}
#endif
}
else
#endif
{
GLenum gl_type;
GLint status;
if (shader->gl_handle)
{
CoglPipeline *prev = shader->compilation_pipeline;
/* XXX: currently the only things that will affect the
* boilerplate for user shaders, apart from driver features,
* are the pipeline layer-indices and texture-unit-indices
*/
if (pipeline == prev ||
_cogl_pipeline_layer_and_unit_numbers_equal (prev, pipeline))
return;
}
if (shader->gl_handle)
delete_shader (shader);
switch (shader->type)
{
case COGL_SHADER_TYPE_VERTEX:
gl_type = GL_VERTEX_SHADER;
break;
case COGL_SHADER_TYPE_FRAGMENT:
gl_type = GL_FRAGMENT_SHADER;
break;
default:
g_assert_not_reached ();
break;
}
shader->gl_handle = ctx->glCreateShader (gl_type);
_cogl_glsl_shader_set_source_with_boilerplate (ctx,
shader->gl_handle,
gl_type,
pipeline,
1,
(const char **)
&shader->source,
NULL);
GE (ctx, glCompileShader (shader->gl_handle));
shader->compilation_pipeline = cogl_object_ref (pipeline);
GE (ctx, glGetShaderiv (shader->gl_handle, GL_COMPILE_STATUS, &status));
if (!status)
{
char buffer[512];
int len = 0;
ctx->glGetShaderInfoLog (shader->gl_handle, 511, &len, buffer);
buffer[len] = '\0';
g_warning ("Failed to compile GLSL program:\n"
"src:\n%s\n"
"error:\n%s\n",
shader->source,
buffer);
}
}
}
static CoglBool
_cogl_pipeline_fragend_arbfp_end (CoglPipeline *pipeline,
unsigned long pipelines_difference)
{
CoglPipelineShaderState *shader_state = get_shader_state (pipeline);
GLuint gl_program;
UpdateConstantsState state;
_COGL_GET_CONTEXT (ctx, FALSE);
if (shader_state->source)
{
GLenum gl_error;
COGL_STATIC_COUNTER (fragend_arbfp_compile_counter,
"arbfp compile counter",
"Increments each time a new ARBfp "
"program is compiled",
0 /* no application private data */);
COGL_COUNTER_INC (_cogl_uprof_context, fragend_arbfp_compile_counter);
g_string_append (shader_state->source,
"MOV result.color,output;\n");
g_string_append (shader_state->source, "END\n");
if (G_UNLIKELY (COGL_DEBUG_ENABLED (COGL_DEBUG_SHOW_SOURCE)))
g_message ("pipeline program:\n%s", shader_state->source->str);
GE (ctx, glGenPrograms (1, &shader_state->gl_program));
GE (ctx, glBindProgram (GL_FRAGMENT_PROGRAM_ARB,
shader_state->gl_program));
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
;
ctx->glProgramString (GL_FRAGMENT_PROGRAM_ARB,
GL_PROGRAM_FORMAT_ASCII_ARB,
shader_state->source->len,
shader_state->source->str);
if (ctx->glGetError () != GL_NO_ERROR)
{
g_warning ("\n%s\n%s",
shader_state->source->str,
ctx->glGetString (GL_PROGRAM_ERROR_STRING_ARB));
}
shader_state->source = NULL;
}
gl_program = shader_state->gl_program;
GE (ctx, glBindProgram (GL_FRAGMENT_PROGRAM_ARB, gl_program));
_cogl_use_fragment_program (0, COGL_PIPELINE_PROGRAM_TYPE_ARBFP);
state.unit = 0;
state.shader_state = shader_state;
/* If this arbfp program was last used with a different pipeline
* then we need to ensure we update all program.local params */
state.update_all =
pipeline != shader_state->last_used_for_pipeline;
cogl_pipeline_foreach_layer (pipeline,
update_constants_cb,
&state);
/* We need to track what pipeline used this arbfp program last since
* we will need to update program.local params when switching
* between different pipelines. */
shader_state->last_used_for_pipeline = pipeline;
return TRUE;
}