Previously the sampler uniform declarations such as cogl_sampler0 were
generated by walking the list of layers in the shader state. This had
two problems. Firstly it would only generate the declarations for
layers that have been referenced. If a layer has a combine mode of
replace then the samplers from previous layers couldn't be used by
custom snippets. Secondly it meant that the samplers couldn't be
referenced by functions in the declarations sections because the
samplers are declared too late.
This patch fixes it to generate the layer declarations in the backend
start function using all of the layers on the pipeline instead. In
addition it adds the sampler declarations to the vertex shader as they
were previously missing.
Reviewed-by: Robert Bragg <robert@linux.intel.com>
(cherry picked from commit 1824df902bbb9995cae6ffb7a413913f2df35eef)
Conflicts:
cogl/driver/gl/cogl-pipeline-fragend-glsl.c
cogl/driver/gl/cogl-pipeline-vertend-glsl.c
This remove cogl-internal.h in favour of using cogl-private.h. Some
things in cogl-internal.h were moved to driver/gl/cogl-util-gl-private.h
and the _cogl_gl_error_to_string function whose prototype was moved from
cogl-internal.h to cogl-util-gl-private.h has had its implementation
moved from cogl.c to cogl-util-gl.c
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 01cc82ece091aa3bec4c07fdd6bc9e5135fca573)
This makes Cogl explicitly check for out-of-memory errors reported by
the opengl driver in cogl_texture_2d_new_with_size() calls. This allows
us to throw a COGL_SYSTEM_ERROR_NO_MEMORY error and return NULL so
applications may gracefully handle this condition.
This patch only affects the cogl_texture_2d_new_with_size() api not
_new_from_data() or _new_from_bitmap().
Reviewed-by: Neil Roberts <neil@linux.intel.com>
(cherry picked from commit 0283423dad59ba3d3e4cde400c29ac8e7803f888)
