mutter/clutter/cogl/common/cogl-material-private.h
Robert Bragg 377f114046 [cogl-material] improvements for cogl_material_rectangle
The API has been changed to take an explicit length for the number of
texture coordinates passed, and it's now documented that if there are
more layers to the current material than the number of texture coords
passed, then default coordinates will be generated for the other
layers.

cogl_material_rectangle should now handle the case where a single
sliced texture is supplied as a material layer by falling back to
cogl_texture_rectangle. We are nearly at the point that
cogl_texture_rectangle could be deprecated. A few issues remain
though, such as not considering waste in cogl_material_rectangle.
2008-12-24 01:35:33 +00:00

77 lines
2.0 KiB
C

#ifndef __COGL_MATERIAL_PRIVATE_H
#define __COGL_MATERIAL_PRIVATE_H
#include "cogl-material.h"
#include "cogl-matrix.h"
#include <glib.h>
typedef struct _CoglMaterial CoglMaterial;
typedef struct _CoglMaterialLayer CoglMaterialLayer;
typedef enum _CoglMaterialLayerFlags
{
COGL_MATERIAL_LAYER_FLAG_USER_MATRIX = 1L<<0,
} CoglMaterialLayerFlags;
struct _CoglMaterialLayer
{
guint ref_count;
guint index; /*!< lowest index is blended first then others
on top */
gulong flags;
CoglHandle texture; /*!< The texture for this layer, or COGL_INVALID_HANDLE
for an empty layer */
/* Determines how the color of individual texture fragments
* are calculated. */
CoglMaterialLayerCombineFunc texture_combine_rgb_func;
CoglMaterialLayerCombineSrc texture_combine_rgb_src[3];
CoglMaterialLayerCombineOp texture_combine_rgb_op[3];
CoglMaterialLayerCombineFunc texture_combine_alpha_func;
CoglMaterialLayerCombineSrc texture_combine_alpha_src[3];
CoglMaterialLayerCombineOp texture_combine_alpha_op[3];
/* TODO: Support purely GLSL based material layers */
CoglMatrix matrix;
};
typedef enum _CoglMaterialFlags
{
COGL_MATERIAL_FLAG_ENABLE_BLEND = 1L<<0,
COGL_MATERIAL_FLAG_SHOWN_SAMPLER_WARNING = 1L<<1,
COGL_MATERIAL_FLAG_DIRTY = 1L<<2
} CoglMaterialFlags;
struct _CoglMaterial
{
guint ref_count;
gulong flags;
/* If no lighting is enabled; this is the basic material color */
GLfloat unlit[4];
/* Standard OpenGL lighting model attributes */
GLfloat ambient[4];
GLfloat diffuse[4];
GLfloat specular[4];
GLfloat emission[4];
GLfloat shininess;
/* Determines what fragments are discarded based on their alpha */
CoglMaterialAlphaFunc alpha_func;
GLfloat alpha_func_reference;
/* Determines how this material is blended with other primitives */
CoglMaterialBlendFactor blend_src_factor;
CoglMaterialBlendFactor blend_dst_factor;
GList *layers;
};
#endif /* __COGL_MATERIAL_PRIVATE_H */