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[cogl-material] Removes all the API made redundant by the blend strings API

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This removes the following API:
  cogl_material_set_blend_factors
  cogl_material_set_layer_combine_function
  cogl_material_set_layer_combine_arg_src
  cogl_material_set_layer_combine_arg_op

These were rather awkward to use, so since it's expected very few people are
using them at this point and it should be straight forward to switch over
to blend strings, the API is being removed before we release Clutter 1.0.
This commit is contained in:
Robert Bragg 2009-05-23 16:23:00 +01:00
parent bc8a18ebc3
commit 2dc882f685
4 changed files with 34 additions and 466 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

293
cogl-material.h
View File

@ -365,92 +365,6 @@ void cogl_material_set_alpha_test_function (CoglHandle material,
CoglMaterialAlphaFunc alpha_func,
float alpha_reference);
/**
* CoglMaterialBlendFactor:
* @COGL_MATERIAL_BLEND_FACTOR_ZERO: (0, 0, 0, 0)
* @COGL_MATERIAL_BLEND_FACTOR_ONE: (1, 1, 1, 1)
* @COGL_MATERIAL_BLEND_FACTOR_SRC_COLOR: (Rs, Gs, Bs, As)
* @COGL_MATERIAL_BLEND_FACTOR_DST_COLOR: (Rd, Gd, Bd, Ad)
* @COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_SRC_COLOR: (1-Rs, 1-Gs, 1-Bs, 1-As)
* @COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_DST_COLOR: (1-Rd, 1-Gd, 1-Bd, 1-Ad)
* @COGL_MATERIAL_BLEND_FACTOR_SRC_ALPHA: (As, As, As, As)
* @COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA: (1-As, 1-As, 1-As, 1-As)
* @COGL_MATERIAL_BLEND_FACTOR_DST_ALPHA: (Ad, Ad, Ad, Ad)
* @COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_DST_ALPHA: (1-Ad, 1-Ad, 1-Ad, 1-Ad)
* @COGL_MATERIAL_BLEND_FACTOR_CONSTANT: (Rc, Gc, Bc, Ac)
* @COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_CONSTANT: (1-Rc, 1-Gc, 1-Bc, 1-Ac)
* @COGL_MATERIAL_BLEND_FACTOR_CONSTANT_ALPHA: (Ac, Ac, Ac, Ac)
* @COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA: (1-Ac, 1-Ac, 1-Ac, 1-Ac)
* @COGL_MATERIAL_BLEND_FACTOR_SRC_ALPHA_SATURATE: (f,f,f,1) where f=MIN(As,1-Ad)
*
* <para>
* A fixed function is used to determine the blended color, which is based on
* the incoming source color of your fragment (Rs, Gs, Bs, As), a source
* factor (Sr, Sg, Sb, Sa), a destination color (Rd, Rg, Rb, Ra) and
* a destination factor (Dr, Dg, Db, Da), and is given by these equations:
* </para>
* <programlisting>
* R = Rs*Sr + Rd*Dr
* G = Gs*Sg + Gd*Dg
* B = Bs*Sb + Bd*Db
* A = As*Sa + Ad*Da
* </programlisting>
*
* All factors have a range [0, 1]
*
* The factors are selected with the following constants:
*/
typedef enum _CoglMaterialBlendFactor
{
COGL_MATERIAL_BLEND_FACTOR_ZERO = GL_ZERO,
COGL_MATERIAL_BLEND_FACTOR_ONE = GL_ONE,
COGL_MATERIAL_BLEND_FACTOR_SRC_COLOR = GL_SRC_COLOR,
COGL_MATERIAL_BLEND_FACTOR_DST_COLOR = GL_DST_COLOR,
COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_SRC_COLOR = GL_ONE_MINUS_SRC_COLOR,
COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_DST_COLOR = GL_ONE_MINUS_DST_COLOR,
COGL_MATERIAL_BLEND_FACTOR_SRC_ALPHA = GL_SRC_ALPHA,
COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA = GL_ONE_MINUS_SRC_ALPHA,
COGL_MATERIAL_BLEND_FACTOR_DST_ALPHA = GL_DST_ALPHA,
COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_DST_ALPHA = GL_ONE_MINUS_DST_ALPHA,
#ifdef HAVE_COGL_GL
COGL_MATERIAL_BLEND_FACTOR_CONSTANT = GL_CONSTANT_COLOR,
COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_CONSTANT =
GL_ONE_MINUS_CONSTANT_COLOR,
COGL_MATERIAL_BLEND_FACTOR_CONSTANT_ALPHA = GL_CONSTANT_ALPHA,
COGL_MATERIAL_BLEND_FACTOR_ONE_MINUS_CONSTANT_ALPHA =
GL_ONE_MINUS_CONSTANT_ALPHA,
#endif
COGL_MATERIAL_BLEND_FACTOR_SRC_ALPHA_SATURATE = GL_SRC_ALPHA_SATURATE,
} CoglMaterialBlendFactor;
/**
* cogl_material_set_blend_factors:
* @material: A CoglMaterial object
* @src_factor: Chooses the @CoglMaterialBlendFactor you want plugged in to
* the blend equation.
* @dst_factor: Chooses the @CoglMaterialBlendFactor you want plugged in to
* the blend equation.
*
* This function lets you control how primitives using this material will get
* blended with the contents of your framebuffer. The blended RGBA components
* are calculated like this:
*
* (RsSr+RdDr, GsSg+GdDg, BsSb+BsSb, AsSa+AdDa)
*
* Where (Rs,Gs,Bs,As) represents your source - material- color,
* (Rd,Gd,Bd,Ad) represents your destination - framebuffer - color,
* (Sr,Sg,Sb,Sa) represents your source blend factor and
* (Dr,Dg,Db,Da) represents you destination blend factor.
*
* All factors lie in the range [0,1] and incoming color components are also
* normalized to the range [0,1]
*
* Since 1.0
*/
void cogl_material_set_blend_factors (CoglHandle material,
CoglMaterialBlendFactor src_factor,
CoglMaterialBlendFactor dst_factor);
/**
* cogl_material_set_blend:
* @material: A CoglMaterial object
@ -675,212 +589,6 @@ void cogl_material_set_layer_combine_constant (CoglHandle ma
int layer_index,
CoglColor *constant);
/**
* CoglMaterialLayerCombineFunc:
* @COGL_MATERIAL_LAYER_COMBINE_FUNC_REPLACE: Arg0
* @COGL_MATERIAL_LAYER_COMBINE_FUNC_MODULATE: Arg0 x Arg1
* @COGL_MATERIAL_LAYER_COMBINE_FUNC_ADD: Arg0 + Arg1
* @COGL_MATERIAL_LAYER_COMBINE_FUNC_ADD_SIGNED: Arg0 + Arg1 - 0.5
* @COGL_MATERIAL_LAYER_COMBINE_FUNC_INTERPOLATE: Arg0 x Arg + Arg1 x (1-Arg2)
* @COGL_MATERIAL_LAYER_COMBINE_FUNC_SUBTRACT: Arg0 - Arg1
* @COGL_MATERIAL_LAYER_COMBINE_FUNC_DOT3_RGB: 4 x ((Arg0r - 0.5) x (Arg1r - 0.5)) +
* @COGL_MATERIAL_LAYER_COMBINE_FUNC_DOT3_RGBA: ((Arg0b - 0.5) x (Arg1b - 0.5)) +
*
* A material may comprise of 1 or more layers that can be combined using a
* number of different functions. By default layers are modulated, which is
* to say the components of the current source layer S are simply multipled
* together with the combined results of the previous layer P like this:
*
* <programlisting>
* (Rs*Rp, Gs*Gp, Bs*Bp, As*Ap)
* </programlisting>
*
* For more advanced techniques, Cogl exposes the fixed function texture
* combining capabilities of your GPU to give you greater control.
*/
typedef enum _CoglMaterialLayerCombineFunc
{
COGL_MATERIAL_LAYER_COMBINE_FUNC_REPLACE = CGL_REPLACE,
COGL_MATERIAL_LAYER_COMBINE_FUNC_MODULATE = CGL_MODULATE,
COGL_MATERIAL_LAYER_COMBINE_FUNC_ADD = CGL_ADD,
COGL_MATERIAL_LAYER_COMBINE_FUNC_ADD_SIGNED = CGL_ADD_SIGNED,
COGL_MATERIAL_LAYER_COMBINE_FUNC_INTERPOLATE = CGL_INTERPOLATE,
COGL_MATERIAL_LAYER_COMBINE_FUNC_SUBTRACT = CGL_SUBTRACT,
COGL_MATERIAL_LAYER_COMBINE_FUNC_DOT3_RGB = CGL_DOT3_RGB,
COGL_MATERIAL_LAYER_COMBINE_FUNC_DOT3_RGBA = CGL_DOT3_RGBA
} CoglMaterialLayerCombineFunc;
/**
* CoglMaterialLayerCombineChannels:
* @COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGB: Modify the function or argument
* src/op for the RGB components of a
* layer
* @COGL_MATERIAL_LAYER_COMBINE_CHANNELS_ALPHA: Modify the function or argument
* src/op for the Alpha component of a
* layer
* @COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGBA: Modify the function or argument
* src/op for all the components of a
* layer
*
* Cogl optionally lets you describe 2 seperate combine modes for a single
* layer; 1 for the RGB components, and 1 for the Alpha component, so in this
* case you would repeat the 3 steps documented with the
* @cogl_material_set_layer_combine_function function for each channel
* selector.
*
* (Note: you can't have different modes for each channel, so if you need more
* control you will need to use a glsl fragment shader)
*/
typedef enum _CoglMaterialLayerCombineChannels
{
COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGB,
COGL_MATERIAL_LAYER_COMBINE_CHANNELS_ALPHA,
COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGBA
} CoglMaterialLayerCombineChannels;
/**
* cogl_material_set_layer_combine_function:
* @material: A CoglMaterial object
* @layer_index: Specifies the layer whos combine mode you want to modify
* @channels: Specifies which channels combine mode you want to modify
* (RGB, ALPHA, or RGBA)
* @func: Specifies the function you want to use for combining fragments
* of the specified layer with the results of previously combined
* layers.
*
* There are three basic steps to describing how a layer should be combined:
* <orderedlist>
* <listitem>
* Choose a function.
* </listitem>
* <listitem>
* Specify the source color for each argument of the chosen function. (Note
* the functions don't all take the same number of arguments)
* </listitem>
* <listitem>
* Specify an operator for each argument that can modify the corresponding
* source color before the function is applied.
* </listitem>
* </orderedlist>
*
* Cogl optionally lets you describe 2 seperate combine modes for a single
* layer; 1 for the RGB components, and 1 for the Alpha component, so in this
* case you would repeat the 3 steps for each channel selector.
*
* (Note: you can't have different modes for each channel, so if you need more
* control you will need to use a glsl fragment shader)
*
* For example here is how you could elect to use the ADD function for all
* components of layer 1 in your material:
* <programlisting>
* //Step 1: Choose a function. Note the ADD function takes 2 arguments...
* cogl_material_set_layer_combine_function (material,
* 1,
* COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGBA)
* COGL_MATERIAL_LAYER_COMBINE_FUNC_ADD);
* //Step 2: Specify the source color for the 2 ADD function arguments...
* cogl_material_set_layer_combine_arg_src (material,
* 1,//layer index
* 0,//argument index
* COGL_MATERIAL_LAYER_COMBINE_SRC_PREVIOUS);
* cogl_material_set_layer_combine_arg_src (material,
* 1,//layer index
* 1,//argument index
* COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGBA)
* COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE);
* //Step 3: Specify the operators used to modify the arguments...
* cogl_material_set_layer_combine_arg_op (material,
* 1,//layer index
* 0,//argument index
* COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGBA,
* COGL_MATERIAL_LAYER_COMBINE_OP_SRC_COLOR);
* cogl_material_set_layer_combine_arg_op (material,
* 1,//layer index
* 1,//argument index
* COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGBA,
* COGL_MATERIAL_LAYER_COMBINE_OP_SRC_COLOR);
* </programlisting>
*/
void cogl_material_set_layer_combine_function (CoglHandle material,
int layer_index,
CoglMaterialLayerCombineChannels channels,
CoglMaterialLayerCombineFunc func);
/**
* CoglMaterialLayerCombineSrc:
* @COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE: The fragment color of the current texture layer
* @COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE0: The fragment color of texture unit 0
* @COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE1: The fragment color of texture unit 1
* @COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE2: The fragment color of texture unit 2..7
* @COGL_MATERIAL_LAYER_COMBINE_SRC_CONSTANT: A fixed constant color (TODO: no API yet to specify the actual color!)
* @COGL_MATERIAL_LAYER_COMBINE_SRC_PRIMARY_COLOR: The basic color of the primitive ignoring texturing
* @COGL_MATERIAL_LAYER_COMBINE_SRC_PREVIOUS: The result of combining all previous layers
*
* Note for the constants @COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE0..n the
* numbers may not correspond to the indices you choose for your layers since
* your layer indices don't need to be contiguous. If you need to use these
* it would probably be sensible to ensure the layer indices do infact
* correspond.
*/
typedef enum _CoglMaterialLayerCombineSrc
{
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE = GL_TEXTURE,
/* Can we find a nicer way... */
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE0 = GL_TEXTURE0,
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE1 = GL_TEXTURE1,
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE2 = GL_TEXTURE2,
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE3 = GL_TEXTURE3,
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE4 = GL_TEXTURE4,
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE5 = GL_TEXTURE5,
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE6 = GL_TEXTURE6,
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE7 = GL_TEXTURE7,
/* .. who would ever need more than 8 texture layers.. :-) */
COGL_MATERIAL_LAYER_COMBINE_SRC_CONSTANT = CGL_CONSTANT,
COGL_MATERIAL_LAYER_COMBINE_SRC_PRIMARY_COLOR = CGL_PRIMARY_COLOR,
COGL_MATERIAL_LAYER_COMBINE_SRC_PREVIOUS = CGL_PREVIOUS
} CoglMaterialLayerCombineSrc;
/**
* cogl_material_set_layer_combine_arg_src:
* @material: A CoglMaterial object
* @layer_index:
* @argument:
* @channels:
* @src:
*
*/
void cogl_material_set_layer_combine_arg_src (CoglHandle material,
int layer_index,
int argument,
CoglMaterialLayerCombineChannels channels,
CoglMaterialLayerCombineSrc src);
typedef enum _CoglMaterialLayerCombineOp
{
COGL_MATERIAL_LAYER_COMBINE_OP_SRC_COLOR = GL_SRC_COLOR,
COGL_MATERIAL_LAYER_COMBINE_OP_ONE_MINUS_SRC_COLOR = GL_ONE_MINUS_SRC_COLOR,
COGL_MATERIAL_LAYER_COMBINE_OP_SRC_ALPHA = GL_SRC_ALPHA,
COGL_MATERIAL_LAYER_COMBINE_OP_ONE_MINUS_SRC_ALPHA = GL_ONE_MINUS_SRC_ALPHA
} CoglMaterialLayerCombineOp;
/**
* cogl_material_set_layer_combine_arg_op:
* @material: A CoglMaterial object
* @layer_index:
* @argument:
* @channels:
* @op:
*
*/
void cogl_material_set_layer_combine_arg_op (CoglHandle material,
int layer_index,
int argument,
CoglMaterialLayerCombineChannels channels,
CoglMaterialLayerCombineOp op);
/**
* cogl_material_set_layer_matrix:
* @material: A CoglMaterial object
@ -892,7 +600,6 @@ void cogl_material_set_layer_matrix (CoglHandle material,
int layer_index,
CoglMatrix *matrix);
/**
* SECTION:cogl-material-internals
* @short_description: Functions for creating custom primitives that make use

20
common/cogl-material-private.h
View File

@ -70,13 +70,13 @@ struct _CoglMaterialLayer
/* 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];
GLint texture_combine_rgb_func;
GLint texture_combine_rgb_src[3];
GLint texture_combine_rgb_op[3];
CoglMaterialLayerCombineFunc texture_combine_alpha_func;
CoglMaterialLayerCombineSrc texture_combine_alpha_src[3];
CoglMaterialLayerCombineOp texture_combine_alpha_op[3];
GLint texture_combine_alpha_func;
GLint texture_combine_alpha_src[3];
GLint texture_combine_alpha_op[3];
GLfloat texture_combine_constant[4];
@ -119,12 +119,12 @@ struct _CoglMaterial
#ifndef HAVE_COGL_GLES
GLenum blend_equation_rgb;
GLenum blend_equation_alpha;
CoglMaterialBlendFactor blend_dst_factor_alpha;
CoglMaterialBlendFactor blend_src_factor_alpha;
GLint blend_src_factor_alpha;
GLint blend_dst_factor_alpha;
GLfloat blend_constant[4];
#endif
CoglMaterialBlendFactor blend_src_factor_rgb;
CoglMaterialBlendFactor blend_dst_factor_rgb;
GLint blend_src_factor_rgb;
GLint blend_dst_factor_rgb;
GList *layers;
};

176
common/cogl-material.c
View File

@ -500,8 +500,8 @@ arg_to_gl_blend_factor (CoglBlendStringArgument *arg)
void
setup_blend_state (CoglBlendStringStatement *statement,
GLenum *blend_equation,
CoglMaterialBlendFactor *blend_src_factor,
CoglMaterialBlendFactor *blend_dst_factor)
GLint *blend_src_factor,
GLint *blend_dst_factor)
{
#ifndef HAVE_COGL_GLES
switch (statement->function->type)
@ -600,26 +600,6 @@ cogl_material_set_blend_constant (CoglHandle handle,
#endif
}
void
cogl_material_set_blend_factors (CoglHandle handle,
CoglMaterialBlendFactor src_factor,
CoglMaterialBlendFactor dst_factor)
{
CoglMaterial *material;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
material->blend_src_factor_rgb = src_factor;
material->blend_dst_factor_rgb = dst_factor;
#ifndef HAVE_COGL_GLES
material->blend_src_factor_alpha = src_factor;
material->blend_dst_factor_alpha = dst_factor;
#endif
material->flags &= ~COGL_MATERIAL_FLAG_DEFAULT_BLEND_FUNC;
}
/* Asserts that a layer corresponding to the given index exists. If no
* match is found, then a new empty layer is added.
*/
@ -659,21 +639,16 @@ _cogl_material_get_layer (CoglMaterial *material,
/* Choose the same default combine mode as OpenGL:
* MODULATE(PREVIOUS[RGBA],TEXTURE[RGBA]) */
layer->texture_combine_rgb_func = COGL_MATERIAL_LAYER_COMBINE_FUNC_MODULATE;
layer->texture_combine_rgb_src[0] = COGL_MATERIAL_LAYER_COMBINE_SRC_PREVIOUS;
layer->texture_combine_rgb_src[1] = COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE;
layer->texture_combine_rgb_op[0] = COGL_MATERIAL_LAYER_COMBINE_OP_SRC_COLOR;
layer->texture_combine_rgb_op[1] = COGL_MATERIAL_LAYER_COMBINE_OP_SRC_COLOR;
layer->texture_combine_alpha_func =
COGL_MATERIAL_LAYER_COMBINE_FUNC_MODULATE;
layer->texture_combine_alpha_src[0] =
COGL_MATERIAL_LAYER_COMBINE_SRC_PREVIOUS;
layer->texture_combine_alpha_src[1] =
COGL_MATERIAL_LAYER_COMBINE_SRC_TEXTURE;
layer->texture_combine_alpha_op[0] =
COGL_MATERIAL_LAYER_COMBINE_OP_SRC_ALPHA;
layer->texture_combine_alpha_op[1] =
COGL_MATERIAL_LAYER_COMBINE_OP_SRC_ALPHA;
layer->texture_combine_rgb_func = GL_MODULATE;
layer->texture_combine_rgb_src[0] = GL_PREVIOUS;
layer->texture_combine_rgb_src[1] = GL_TEXTURE;
layer->texture_combine_rgb_op[0] = GL_SRC_COLOR;
layer->texture_combine_rgb_op[1] = GL_SRC_COLOR;
layer->texture_combine_alpha_func = GL_MODULATE;
layer->texture_combine_alpha_src[0] = GL_PREVIOUS;
layer->texture_combine_alpha_src[1] = GL_TEXTURE;
layer->texture_combine_alpha_op[0] = GL_SRC_ALPHA;
layer->texture_combine_alpha_op[1] = GL_SRC_ALPHA;
cogl_matrix_init_identity (&layer->matrix);
@ -728,9 +703,9 @@ cogl_material_set_layer (CoglHandle material_handle,
static void
setup_texture_combine_state (CoglBlendStringStatement *statement,
CoglMaterialLayerCombineFunc *texture_combine_func,
CoglMaterialLayerCombineSrc *texture_combine_src,
CoglMaterialLayerCombineOp *texture_combine_op)
GLint *texture_combine_func,
GLint *texture_combine_src,
GLint *texture_combine_op)
{
int i;
@ -889,109 +864,6 @@ cogl_material_set_layer_combine_constant (CoglHandle handle,
layer->flags &= ~COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE;
}
void
cogl_material_set_layer_combine_function (
CoglHandle handle,
gint layer_index,
CoglMaterialLayerCombineChannels channels,
CoglMaterialLayerCombineFunc func)
{
CoglMaterial *material;
CoglMaterialLayer *layer;
gboolean set_alpha_func = FALSE;
gboolean set_rgb_func = FALSE;
g_return_if_fail (cogl_is_material (handle));
material = _cogl_material_pointer_from_handle (handle);
layer = _cogl_material_get_layer (material, layer_index, TRUE);
if (channels == COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGBA)
set_alpha_func = set_rgb_func = TRUE;
else if (channels == COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGB)
set_rgb_func = TRUE;
else if (channels == COGL_MATERIAL_LAYER_COMBINE_CHANNELS_ALPHA)
set_alpha_func = TRUE;
if (set_rgb_func)
layer->texture_combine_rgb_func = func;
if (set_alpha_func)
layer->texture_combine_alpha_func = func;
layer->flags |= COGL_MATERIAL_LAYER_FLAG_DIRTY;
layer->flags &= ~COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE;
}
void
cogl_material_set_layer_combine_arg_src (
CoglHandle handle,
gint layer_index,
gint argument,
CoglMaterialLayerCombineChannels channels,
CoglMaterialLayerCombineSrc src)
{
CoglMaterial *material;
CoglMaterialLayer *layer;
gboolean set_arg_alpha_src = FALSE;
gboolean set_arg_rgb_src = FALSE;
g_return_if_fail (cogl_is_material (handle));
g_return_if_fail (argument >=0 && argument <= 3);
material = _cogl_material_pointer_from_handle (handle);
layer = _cogl_material_get_layer (material, layer_index, TRUE);
if (channels == COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGBA)
set_arg_alpha_src = set_arg_rgb_src = TRUE;
else if (channels == COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGB)
set_arg_rgb_src = TRUE;
else if (channels == COGL_MATERIAL_LAYER_COMBINE_CHANNELS_ALPHA)
set_arg_alpha_src = TRUE;
if (set_arg_rgb_src)
layer->texture_combine_rgb_src[argument] = src;
if (set_arg_alpha_src)
layer->texture_combine_alpha_src[argument] = src;
layer->flags |= COGL_MATERIAL_LAYER_FLAG_DIRTY;
layer->flags &= ~COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE;
}
void
cogl_material_set_layer_combine_arg_op (
CoglHandle material_handle,
gint layer_index,
gint argument,
CoglMaterialLayerCombineChannels channels,
CoglMaterialLayerCombineOp op)
{
CoglMaterial *material;
CoglMaterialLayer *layer;
gboolean set_arg_alpha_op = FALSE;
gboolean set_arg_rgb_op = FALSE;
g_return_if_fail (cogl_is_material (material_handle));
g_return_if_fail (argument >=0 && argument <= 3);
material = _cogl_material_pointer_from_handle (material_handle);
layer = _cogl_material_get_layer (material, layer_index, TRUE);
if (channels == COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGBA)
set_arg_alpha_op = set_arg_rgb_op = TRUE;
else if (channels == COGL_MATERIAL_LAYER_COMBINE_CHANNELS_RGB)
set_arg_rgb_op = TRUE;
else if (channels == COGL_MATERIAL_LAYER_COMBINE_CHANNELS_ALPHA)
set_arg_alpha_op = TRUE;
if (set_arg_rgb_op)
layer->texture_combine_rgb_op[argument] = op;
if (set_arg_alpha_op)
layer->texture_combine_alpha_op[argument] = op;
layer->flags |= COGL_MATERIAL_LAYER_FLAG_DIRTY;
layer->flags &= ~COGL_MATERIAL_LAYER_FLAG_DEFAULT_COMBINE;
}
void
cogl_material_set_layer_matrix (CoglHandle material_handle,
gint layer_index,
@ -1119,20 +991,20 @@ cogl_material_layer_get_flags (CoglHandle layer_handle)
}
static guint
get_n_args_for_combine_func (CoglMaterialLayerCombineFunc func)
get_n_args_for_combine_func (GLint func)
{
switch (func)
{
case COGL_MATERIAL_LAYER_COMBINE_FUNC_REPLACE:
case GL_REPLACE:
return 1;
case COGL_MATERIAL_LAYER_COMBINE_FUNC_MODULATE:
case COGL_MATERIAL_LAYER_COMBINE_FUNC_ADD:
case COGL_MATERIAL_LAYER_COMBINE_FUNC_ADD_SIGNED:
case COGL_MATERIAL_LAYER_COMBINE_FUNC_SUBTRACT:
case COGL_MATERIAL_LAYER_COMBINE_FUNC_DOT3_RGB:
case COGL_MATERIAL_LAYER_COMBINE_FUNC_DOT3_RGBA:
case GL_MODULATE:
case GL_ADD:
case GL_ADD_SIGNED:
case GL_SUBTRACT:
case GL_DOT3_RGB:
case GL_DOT3_RGBA:
return 2;
case COGL_MATERIAL_LAYER_COMBINE_FUNC_INTERPOLATE:
case GL_INTERPOLATE:
return 3;
}
return 0;

11
doc/reference/cogl/cogl-sections.txt
View File

@ -349,22 +349,13 @@ cogl_material_set_specular
cogl_material_get_specular
cogl_material_set_shininess
cogl_material_get_shininess
<SUBSECTION Advanced Blending>
CoglMaterialAlphaFunc
cogl_material_set_alpha_test_function
CoglMaterialBlendFactor
cogl_material_set_blend_factors
cogl_material_set_blend
cogl_material_set_blend_constant
cogl_material_set_layer
cogl_material_remove_layer
CoglMaterialLayerCombineFunc
cogl_material_set_layer_combine_function
CoglMaterialLayerCombineChannels
CoglMaterialLayerCombineSrc
cogl_material_set_layer_combine_arg_src
CoglMaterialLayerCombineOp
cogl_material_set_layer_combine_arg_op
cogl_material_set_layer_combine
cogl_material_set_layer_combine_constant
cogl_material_set_layer_matrix
@ -372,8 +363,6 @@ cogl_material_set_layer_matrix
CoglMaterial
CoglMaterialFlags
CoglMaterialLayerPrivFlags
cogl_material_set_layer_alpha_combine
cogl_material_set_layer_rgb_combine
</SECTION>
<SECTION>