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material: track unit state with arbfp private state

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We are going to start tracking more per-texture unit state with arbfp
private state so this adds an internal UnitState type and we allocate an
array of these when setting up a new private state structure. The first
thing that has been moved into this is the sampled boolean to know when
a particular texture unit gets sampled from in the generated arbfp code.
This commit is contained in:
Robert Bragg 2010-09-13 21:17:30 +01:00
parent 98516061c3
commit 7f95015c6d
1 changed files with 27 additions and 9 deletions
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36
clutter/cogl/cogl/cogl-material-arbfp.c
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@ -74,6 +74,11 @@
#define GL_TEXTURE_3D 0x806F
#endif
typedef struct _UnitState
{
unsigned int sampled:1;
} UnitState;
typedef struct _CoglMaterialBackendARBfpPrivate
{
CoglMaterial *authority_cache;
@ -82,7 +87,7 @@ typedef struct _CoglMaterialBackendARBfpPrivate
CoglHandle user_program;
GString *source;
GLuint gl_program;
gboolean *sampled;
UnitState *unit_state;
int next_constant_id;
} CoglMaterialBackendARBfpPrivate;
@ -332,10 +337,19 @@ _cogl_material_backend_arbfp_start (CoglMaterial *material,
}
authority_priv = authority->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
/*
* Now we can start to prepare the authoritative arbfp state...
*/
if (!authority_priv->unit_state)
authority_priv->unit_state = g_new0 (UnitState, n_layers);
authority_priv->user_program = user_program;
if (user_program == COGL_INVALID_HANDLE && authority_priv->gl_program == 0)
{
int i;
/* We reuse a single grow-only GString for ARBfp code-gen */
g_string_set_size (ctx->arbfp_source_buffer, 0);
authority_priv->source = ctx->arbfp_source_buffer;
@ -347,7 +361,11 @@ _cogl_material_backend_arbfp_start (CoglMaterial *material,
"PARAM one = {1, 1, 1, 1};\n"
"PARAM two = {2, 2, 2, 2};\n"
"PARAM minus_one = {-1, -1, -1, -1};\n");
authority_priv->sampled = g_new0 (gboolean, n_layers);
for (i = 0; i < n_layers; i++)
{
authority_priv->unit_state[i].sampled = FALSE;
}
}
return TRUE;
@ -462,7 +480,7 @@ setup_texture_source (CoglMaterialBackendARBfpPrivate *priv,
int unit_index,
GLenum gl_target)
{
if (!priv->sampled[unit_index])
if (!priv->unit_state[unit_index].sampled)
{
g_string_append_printf (priv->source,
"TEMP texel%d;\n"
@ -473,7 +491,7 @@ setup_texture_source (CoglMaterialBackendARBfpPrivate *priv,
unit_index,
unit_index,
gl_target_to_arbfp_string (gl_target));
priv->sampled[unit_index] = TRUE;
priv->unit_state[unit_index].sampled = TRUE;
}
}
@ -981,9 +999,6 @@ _cogl_material_backend_arbfp_end (CoglMaterial *material,
}
priv->source = NULL;
g_free (priv->sampled);
priv->sampled = NULL;
}
if (priv->user_program != COGL_INVALID_HANDLE)
@ -1027,6 +1042,9 @@ _cogl_material_backend_arbfp_material_pre_change_notify (
GE (glDeletePrograms (1, &priv->gl_program));
priv->gl_program = 0;
}
g_free (priv->unit_state);
priv->unit_state = NULL;
}
static gboolean
@ -1073,8 +1091,8 @@ _cogl_material_backend_arbfp_free_priv (CoglMaterial *material)
material->backend_privs[COGL_MATERIAL_BACKEND_ARBFP];
glDeletePrograms (1, &priv->gl_program);
if (priv->sampled)
g_free (priv->sampled);
g_free (priv->unit_state);
priv->unit_state = NULL;
g_slice_free (CoglMaterialBackendARBfpPrivate, priv);
material->backend_priv_set_mask &= ~COGL_MATERIAL_BACKEND_ARBFP_MASK;
}