[Cogl] [PATCH] Remove the pipeline layer user matrix
Neil Roberts
neil at linux.intel.com
Wed Nov 21 11:04:49 PST 2012
The pipeline layer user matrix is not used very often and the way it
is currently implemented comes at a non-trivial cost. Any pipeline
layer that requires the big state needs to have a CoglMatrix added to
its state. The generated vertex shader will always multiply the
coordinates by the matrix even if it is just the identity matrix.
The same functionality can be achieved on programmable hardware using
a shader snippet. The snippet hook for the texture coordinate
transform is still available to make this convenient.
If we later decide that this is a really useful feature for fixed
function hardware then we can add it back in and try to make it work
more efficiently. In the meantime however it seems like a good idea to
get rid of the API now before Cogl 2.0 is released and the API becomes
fixed.
---
cogl/cogl-journal.c | 6 +-
cogl/cogl-pipeline-layer-private.h | 11 ---
cogl/cogl-pipeline-layer-state-private.h | 9 --
cogl/cogl-pipeline-layer-state.c | 128 ------------------------
cogl/cogl-pipeline-layer-state.h | 17 ----
cogl/cogl-pipeline-layer.c | 9 --
cogl/cogl-pipeline-private.h | 4 -
cogl/cogl-pipeline-state-private.h | 3 -
cogl/cogl-pipeline-state.c | 52 ----------
cogl/cogl-pipeline.c | 4 +-
cogl/cogl-primitives.c | 25 -----
cogl/cogl-snippet.h | 29 ++----
cogl/driver/gl/cogl-pipeline-progend-glsl.c | 36 -------
cogl/driver/gl/cogl-pipeline-vertend-fixed.c | 23 -----
cogl/driver/gl/cogl-pipeline-vertend-glsl.c | 27 ++---
doc/reference/cogl2/cogl2-sections.txt | 1 -
tests/conform/Makefile.am | 1 -
tests/conform/test-conform-main.c | 1 -
tests/conform/test-pipeline-user-matrix.c | 141 ---------------------------
tests/conform/test-snippets.c | 16 +--
20 files changed, 23 insertions(+), 520 deletions(-)
delete mode 100644 tests/conform/test-pipeline-user-matrix.c
diff --git a/cogl/cogl-journal.c b/cogl/cogl-journal.c
index 79fc016..45752fc 100644
--- a/cogl/cogl-journal.c
+++ b/cogl/cogl-journal.c
@@ -781,10 +781,10 @@ can_software_clip_entry (CoglJournalEntry *journal_entry,
entries using the same pipeline as the previous entry */
if (prev_journal_entry == NULL || pipeline != prev_journal_entry->pipeline)
{
- /* If there is a custom texture transform; either due to custom shader
- * snippets or a custom texture matrix then we can't reliably modify the
+ /* If there are any snippets then we can't reliably modify the
* texture coordinates. */
- if (_cogl_pipeline_maybe_has_custom_texture_transform (pipeline))
+ if (_cogl_pipeline_has_vertex_snippets (pipeline) ||
+ _cogl_pipeline_has_fragment_snippets (pipeline))
return FALSE;
}
diff --git a/cogl/cogl-pipeline-layer-private.h b/cogl/cogl-pipeline-layer-private.h
index 84ccd9d..90ceeab 100644
--- a/cogl/cogl-pipeline-layer-private.h
+++ b/cogl/cogl-pipeline-layer-private.h
@@ -54,7 +54,6 @@ typedef enum
COGL_PIPELINE_LAYER_STATE_SAMPLER_INDEX,
COGL_PIPELINE_LAYER_STATE_COMBINE_INDEX,
COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT_INDEX,
- COGL_PIPELINE_LAYER_STATE_USER_MATRIX_INDEX,
COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS_INDEX,
COGL_PIPELINE_LAYER_STATE_VERTEX_SNIPPETS_INDEX,
COGL_PIPELINE_LAYER_STATE_FRAGMENT_SNIPPETS_INDEX,
@@ -87,8 +86,6 @@ typedef enum
1L<<COGL_PIPELINE_LAYER_STATE_COMBINE_INDEX,
COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT =
1L<<COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT_INDEX,
- COGL_PIPELINE_LAYER_STATE_USER_MATRIX =
- 1L<<COGL_PIPELINE_LAYER_STATE_USER_MATRIX_INDEX,
COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS =
1L<<COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS_INDEX,
@@ -115,7 +112,6 @@ typedef enum
#define COGL_PIPELINE_LAYER_STATE_NEEDS_BIG_STATE \
(COGL_PIPELINE_LAYER_STATE_COMBINE | \
COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT | \
- COGL_PIPELINE_LAYER_STATE_USER_MATRIX | \
COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS | \
COGL_PIPELINE_LAYER_STATE_VERTEX_SNIPPETS | \
COGL_PIPELINE_LAYER_STATE_FRAGMENT_SNIPPETS)
@@ -176,9 +172,6 @@ typedef struct
float texture_combine_constant[4];
- /* The texture matrix dscribes how to transform texture coordinates */
- CoglMatrix matrix;
-
CoglBool point_sprite_coords;
CoglPipelineSnippetList vertex_snippets;
@@ -295,10 +288,6 @@ _cogl_pipeline_layer_prune_redundant_ancestry (CoglPipelineLayer *layer);
CoglBool
_cogl_pipeline_layer_has_alpha (CoglPipelineLayer *layer);
-CoglBool
-_cogl_pipeline_layer_has_user_matrix (CoglPipeline *pipeline,
- int layer_index);
-
/*
* Calls the pre_paint method on the layer texture if there is
* one. This will determine whether mipmaps are needed based on the
diff --git a/cogl/cogl-pipeline-layer-state-private.h b/cogl/cogl-pipeline-layer-state-private.h
index db3ae81..c4eb027 100644
--- a/cogl/cogl-pipeline-layer-state-private.h
+++ b/cogl/cogl-pipeline-layer-state-private.h
@@ -67,10 +67,6 @@ _cogl_pipeline_layer_sampler_equal (CoglPipelineLayer *authority0,
CoglPipelineLayer *authority1);
CoglBool
-_cogl_pipeline_layer_user_matrix_equal (CoglPipelineLayer *authority0,
- CoglPipelineLayer *authority1);
-
-CoglBool
_cogl_pipeline_layer_point_sprite_coords_equal (CoglPipelineLayer *authority0,
CoglPipelineLayer *authority1);
@@ -113,11 +109,6 @@ _cogl_pipeline_layer_hash_combine_constant_state (CoglPipelineLayer *authority,
CoglPipelineHashState *state);
void
-_cogl_pipeline_layer_hash_user_matrix_state (CoglPipelineLayer *authority,
- CoglPipelineLayer **authorities,
- CoglPipelineHashState *state);
-
-void
_cogl_pipeline_layer_hash_point_sprite_state (CoglPipelineLayer *authority,
CoglPipelineLayer **authorities,
CoglPipelineHashState *state);
diff --git a/cogl/cogl-pipeline-layer-state.c b/cogl/cogl-pipeline-layer-state.c
index b69ff46..5c05d16 100644
--- a/cogl/cogl-pipeline-layer-state.c
+++ b/cogl/cogl-pipeline-layer-state.c
@@ -1043,19 +1043,6 @@ _cogl_pipeline_layer_sampler_equal (CoglPipelineLayer *authority0,
}
CoglBool
-_cogl_pipeline_layer_user_matrix_equal (CoglPipelineLayer *authority0,
- CoglPipelineLayer *authority1)
-{
- CoglPipelineLayerBigState *big_state0 = authority0->big_state;
- CoglPipelineLayerBigState *big_state1 = authority1->big_state;
-
- if (!cogl_matrix_equal (&big_state0->matrix, &big_state1->matrix))
- return FALSE;
-
- return TRUE;
-}
-
-CoglBool
_cogl_pipeline_layer_point_sprite_coords_equal (CoglPipelineLayer *authority0,
CoglPipelineLayer *authority1)
{
@@ -1381,94 +1368,6 @@ _cogl_pipeline_get_layer_combine_constant (CoglPipeline *pipeline,
sizeof (float) * 4);
}
-/* We should probably make a public API version of this that has a
- matrix out-param. For an internal API it's good to be able to avoid
- copying the matrix */
-const CoglMatrix *
-_cogl_pipeline_get_layer_matrix (CoglPipeline *pipeline, int layer_index)
-{
- CoglPipelineLayerState change =
- COGL_PIPELINE_LAYER_STATE_USER_MATRIX;
- CoglPipelineLayer *layer;
- CoglPipelineLayer *authority;
-
- _COGL_RETURN_VAL_IF_FAIL (cogl_is_pipeline (pipeline), NULL);
-
- layer = _cogl_pipeline_get_layer (pipeline, layer_index);
-
- authority = _cogl_pipeline_layer_get_authority (layer, change);
- return &authority->big_state->matrix;
-}
-
-void
-cogl_pipeline_set_layer_matrix (CoglPipeline *pipeline,
- int layer_index,
- const CoglMatrix *matrix)
-{
- CoglPipelineLayerState state = COGL_PIPELINE_LAYER_STATE_USER_MATRIX;
- CoglPipelineLayer *layer;
- CoglPipelineLayer *authority;
- CoglPipelineLayer *new;
-
- _COGL_RETURN_IF_FAIL (cogl_is_pipeline (pipeline));
-
- /* Note: this will ensure that the layer exists, creating one if it
- * doesn't already.
- *
- * Note: If the layer already existed it's possibly owned by another
- * pipeline. If the layer is created then it will be owned by
- * pipeline. */
- layer = _cogl_pipeline_get_layer (pipeline, layer_index);
-
- /* Now find the ancestor of the layer that is the authority for the
- * state we want to change */
- authority = _cogl_pipeline_layer_get_authority (layer, state);
-
- if (cogl_matrix_equal (matrix, &authority->big_state->matrix))
- return;
-
- new = _cogl_pipeline_layer_pre_change_notify (pipeline, layer, state);
- if (new != layer)
- layer = new;
- else
- {
- /* If the original layer we found is currently the authority on
- * the state we are changing see if we can revert to one of our
- * ancestors being the authority. */
- if (layer == authority &&
- _cogl_pipeline_layer_get_parent (authority) != NULL)
- {
- CoglPipelineLayer *parent =
- _cogl_pipeline_layer_get_parent (authority);
- CoglPipelineLayer *old_authority =
- _cogl_pipeline_layer_get_authority (parent, state);
-
- if (cogl_matrix_equal (matrix, &old_authority->big_state->matrix))
- {
- layer->differences &= ~state;
-
- g_assert (layer->owner == pipeline);
- if (layer->differences == 0)
- _cogl_pipeline_prune_empty_layer_difference (pipeline,
- layer);
- return;
- }
- }
- }
-
- layer->big_state->matrix = *matrix;
-
- /* If we weren't previously the authority on this state then we need
- * to extended our differences mask and so it's possible that some
- * of our ancestry will now become redundant, so we aim to reparent
- * ourselves if that's true... */
- if (layer != authority)
- {
- layer->differences |= state;
- _cogl_pipeline_layer_prune_redundant_ancestry (layer);
- }
-}
-
CoglTexture *
_cogl_pipeline_layer_get_texture (CoglPipelineLayer *layer)
{
@@ -1477,23 +1376,6 @@ _cogl_pipeline_layer_get_texture (CoglPipelineLayer *layer)
return _cogl_pipeline_layer_get_texture_real (layer);
}
-CoglBool
-_cogl_pipeline_layer_has_user_matrix (CoglPipeline *pipeline,
- int layer_index)
-{
- CoglPipelineLayer *layer;
- CoglPipelineLayer *authority;
-
- layer = _cogl_pipeline_get_layer (pipeline, layer_index);
-
- authority =
- _cogl_pipeline_layer_get_authority (layer,
- COGL_PIPELINE_LAYER_STATE_USER_MATRIX);
-
- /* If the authority is the default pipeline then no, otherwise yes */
- return _cogl_pipeline_layer_get_parent (authority) ? TRUE : FALSE;
-}
-
void
_cogl_pipeline_layer_get_filters (CoglPipelineLayer *layer,
CoglPipelineFilter *min_filter,
@@ -1766,16 +1648,6 @@ done:
}
void
-_cogl_pipeline_layer_hash_user_matrix_state (CoglPipelineLayer *authority,
- CoglPipelineLayer **authorities,
- CoglPipelineHashState *state)
-{
- CoglPipelineLayerBigState *big_state = authority->big_state;
- state->hash = _cogl_util_one_at_a_time_hash (state->hash, &big_state->matrix,
- sizeof (float) * 16);
-}
-
-void
_cogl_pipeline_layer_hash_point_sprite_state (CoglPipelineLayer *authority,
CoglPipelineLayer **authorities,
CoglPipelineHashState *state)
diff --git a/cogl/cogl-pipeline-layer-state.h b/cogl/cogl-pipeline-layer-state.h
index a785411..9380ddf 100644
--- a/cogl/cogl-pipeline-layer-state.h
+++ b/cogl/cogl-pipeline-layer-state.h
@@ -318,23 +318,6 @@ cogl_pipeline_set_layer_combine_constant (CoglPipeline *pipeline,
const CoglColor *constant);
/**
- * cogl_pipeline_set_layer_matrix:
- * @pipeline: A #CoglPipeline object
- * @layer_index: the index for the layer inside @pipeline
- * @matrix: the transformation matrix for the layer
- *
- * This function lets you set a matrix that can be used to e.g. translate
- * and rotate a single layer of a pipeline used to fill your geometry.
- *
- * Since: 1.10
- * Stability: unstable
- */
-void
-cogl_pipeline_set_layer_matrix (CoglPipeline *pipeline,
- int layer_index,
- const CoglMatrix *matrix);
-
-/**
* cogl_pipeline_get_n_layers:
* @pipeline: A #CoglPipeline object
*
diff --git a/cogl/cogl-pipeline-layer.c b/cogl/cogl-pipeline-layer.c
index d9590c8..a3a4545 100644
--- a/cogl/cogl-pipeline-layer.c
+++ b/cogl/cogl-pipeline-layer.c
@@ -168,7 +168,6 @@ _cogl_pipeline_layer_init_multi_property_sparse_state (
case COGL_PIPELINE_LAYER_STATE_TEXTURE_TYPE:
case COGL_PIPELINE_LAYER_STATE_TEXTURE_DATA:
case COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS:
- case COGL_PIPELINE_LAYER_STATE_USER_MATRIX:
case COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT:
case COGL_PIPELINE_LAYER_STATE_SAMPLER:
g_return_if_reached ();
@@ -593,12 +592,6 @@ _cogl_pipeline_layer_equal (CoglPipelineLayer *layer0,
_cogl_pipeline_layer_sampler_equal))
return FALSE;
- if (layers_difference & COGL_PIPELINE_LAYER_STATE_USER_MATRIX &&
- !layer_state_equal (COGL_PIPELINE_LAYER_STATE_USER_MATRIX_INDEX,
- authorities0, authorities1,
- _cogl_pipeline_layer_user_matrix_equal))
- return FALSE;
-
if (layers_difference & COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS &&
!layer_state_equal (COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS_INDEX,
authorities0, authorities1,
@@ -693,8 +686,6 @@ _cogl_pipeline_init_default_layers (void)
big_state->point_sprite_coords = FALSE;
- cogl_matrix_init_identity (&big_state->matrix);
-
ctx->default_layer_0 = _cogl_pipeline_layer_object_new (layer);
/* TODO: we should make default_layer_n comprise of two
diff --git a/cogl/cogl-pipeline-private.h b/cogl/cogl-pipeline-private.h
index 1a3d049..e3411a2 100644
--- a/cogl/cogl-pipeline-private.h
+++ b/cogl/cogl-pipeline-private.h
@@ -793,10 +793,6 @@ _cogl_pipeline_journal_ref (CoglPipeline *pipeline);
void
_cogl_pipeline_journal_unref (CoglPipeline *pipeline);
-const CoglMatrix *
-_cogl_pipeline_get_layer_matrix (CoglPipeline *pipeline,
- int layer_index);
-
void
_cogl_pipeline_texture_storage_change_notify (CoglTexture *texture);
diff --git a/cogl/cogl-pipeline-state-private.h b/cogl/cogl-pipeline-state-private.h
index 8c8b2b8..a4079a9 100644
--- a/cogl/cogl-pipeline-state-private.h
+++ b/cogl/cogl-pipeline-state-private.h
@@ -46,9 +46,6 @@ _cogl_pipeline_get_colorubv (CoglPipeline *pipeline,
}
CoglBool
-_cogl_pipeline_maybe_has_custom_texture_transform (CoglPipeline *pipeline);
-
-CoglBool
_cogl_pipeline_has_vertex_snippets (CoglPipeline *pipeline);
CoglBool
diff --git a/cogl/cogl-pipeline-state.c b/cogl/cogl-pipeline-state.c
index c4ec4ea..726d418 100644
--- a/cogl/cogl-pipeline-state.c
+++ b/cogl/cogl-pipeline-state.c
@@ -1252,58 +1252,6 @@ _cogl_pipeline_has_fragment_snippets (CoglPipeline *pipeline)
return found_fragment_snippet;
}
-static CoglBool
-check_maybe_has_custom_texture_transform (CoglPipelineLayer *layer,
- void *user_data)
-{
- CoglBool *maybe_has_custom_texture_transform = user_data;
- unsigned long matrix_state = COGL_PIPELINE_LAYER_STATE_USER_MATRIX;
- unsigned long frag_state = COGL_PIPELINE_LAYER_STATE_FRAGMENT_SNIPPETS;
- unsigned long vert_state = COGL_PIPELINE_LAYER_STATE_VERTEX_SNIPPETS;
- CoglPipelineLayer *matrix_authority;
- CoglPipelineLayer *frag_authority;
- CoglPipelineLayer *vert_authority;
-
- matrix_authority = _cogl_pipeline_layer_get_authority (layer, matrix_state);
- if (!_cogl_pipeline_layer_get_parent (matrix_authority))
- {
- *maybe_has_custom_texture_transform = TRUE;
- return FALSE;
- }
-
- frag_authority = _cogl_pipeline_layer_get_authority (layer, frag_state);
- if (!COGL_LIST_EMPTY (&frag_authority->big_state->fragment_snippets))
- {
- *maybe_has_custom_texture_transform = TRUE;
- return FALSE;
- }
-
- vert_authority = _cogl_pipeline_layer_get_authority (layer, vert_state);
- if (!COGL_LIST_EMPTY (&vert_authority->big_state->vertex_snippets))
- {
- *maybe_has_custom_texture_transform = TRUE;
- return FALSE;
- }
-
- return TRUE;
-}
-
-CoglBool
-_cogl_pipeline_maybe_has_custom_texture_transform (CoglPipeline *pipeline)
-{
- CoglBool maybe_has_custom_texture_transform = FALSE;
-
- if (_cogl_pipeline_has_non_layer_fragment_snippets (pipeline))
- return TRUE;
-
- _cogl_pipeline_foreach_layer_internal (
- pipeline,
- check_maybe_has_custom_texture_transform,
- &maybe_has_custom_texture_transform);
-
- return maybe_has_custom_texture_transform;
-}
-
void
_cogl_pipeline_hash_color_state (CoglPipeline *authority,
CoglPipelineHashState *state)
diff --git a/cogl/cogl-pipeline.c b/cogl/cogl-pipeline.c
index 85264ab..35d0094 100644
--- a/cogl/cogl-pipeline.c
+++ b/cogl/cogl-pipeline.c
@@ -2338,8 +2338,6 @@ _cogl_pipeline_init_layer_state_hash_functions (void)
_cogl_pipeline_layer_hash_combine_state;
layer_state_hash_functions[COGL_PIPELINE_LAYER_STATE_COMBINE_CONSTANT_INDEX] =
_cogl_pipeline_layer_hash_combine_constant_state;
- layer_state_hash_functions[COGL_PIPELINE_LAYER_STATE_USER_MATRIX_INDEX] =
- _cogl_pipeline_layer_hash_user_matrix_state;
_index = COGL_PIPELINE_LAYER_STATE_POINT_SPRITE_COORDS_INDEX;
layer_state_hash_functions[_index] =
_cogl_pipeline_layer_hash_point_sprite_state;
@@ -2352,7 +2350,7 @@ _cogl_pipeline_init_layer_state_hash_functions (void)
{
/* So we get a big error if we forget to update this code! */
- _COGL_STATIC_ASSERT (COGL_PIPELINE_LAYER_STATE_SPARSE_COUNT == 10,
+ _COGL_STATIC_ASSERT (COGL_PIPELINE_LAYER_STATE_SPARSE_COUNT == 9,
"Don't forget to install a hash function for new "
"pipeline state and update assert at end of "
"_cogl_pipeline_init_state_hash_functions");
diff --git a/cogl/cogl-primitives.c b/cogl/cogl-primitives.c
index 87ca8bc..89a7106 100644
--- a/cogl/cogl-primitives.c
+++ b/cogl/cogl-primitives.c
@@ -589,31 +589,6 @@ _cogl_rectangles_validate_layer_cb (CoglPipeline *pipeline,
}
}
-#ifdef COGL_ENABLE_DEBUG
- /* If the texture can't be repeated with the GPU (e.g. because it has
- * waste or if using GL_TEXTURE_RECTANGLE_ARB) then if a texture matrix
- * is also in use we don't know if the result will end up trying
- * to texture from the waste area.
- *
- * Note: we check can_hardware_repeat() first since it's cheaper.
- *
- * Note: cases where the texture coordinates will require repeating
- * will be caught by later validation.
- */
- if (!_cogl_texture_can_hardware_repeat (texture) &&
- _cogl_pipeline_layer_has_user_matrix (pipeline, layer_index))
- {
- static CoglBool warning_seen = FALSE;
- if (!warning_seen)
- g_warning ("layer %d of your pipeline uses a custom "
- "texture matrix but because the texture doesn't "
- "support hardware repeating you may see artefacts "
- "due to sampling beyond the texture's bounds.",
- state->i);
- warning_seen = TRUE;
- }
-#endif
-
return TRUE;
}
diff --git a/cogl/cogl-snippet.h b/cogl/cogl-snippet.h
index b9b97f3..5348363 100644
--- a/cogl/cogl-snippet.h
+++ b/cogl/cogl-snippet.h
@@ -144,14 +144,6 @@ G_BEGIN_DECLS
* equivalent to #gl_ModelViewProjectionMatrix.
* </para></glossdef>
* </glossentry>
- * <glossentry>
- * <glossterm>uniform mat4
- * <emphasis>cogl_texture_matrix</emphasis>[]</glossterm>
- * <glossdef><para>
- * An array of matrices for transforming the texture
- * coordinates. This is equivalent to #gl_TextureMatrix.
- * </para></glossdef>
- * </glossentry>
* </glosslist>
*
* In a vertex shader, the following are also available:
@@ -317,8 +309,8 @@ typedef struct _CoglSnippet CoglSnippet;
* @COGL_SNIPPET_HOOK_VERTEX_TRANSFORM: A hook for the vertex transformation.
* @COGL_SNIPPET_HOOK_FRAGMENT: A hook for the entire fragment
* processing stage of the pipeline.
- * @COGL_SNIPPET_HOOK_TEXTURE_COORD_TRANSFORM: A hook for applying the
- * layer matrix to a texture coordinate for a layer.
+ * @COGL_SNIPPET_HOOK_TEXTURE_COORD_TRANSFORM: A hook for transforming
+ * the texture coordinates for a layer.
* @COGL_SNIPPET_HOOK_LAYER_FRAGMENT: A hook for the fragment
* processing of a particular layer.
* @COGL_SNIPPET_HOOK_TEXTURE_LOOKUP: A hook for the texture lookup
@@ -433,16 +425,13 @@ typedef struct _CoglSnippet CoglSnippet;
* the processing for a layer or to modify the results.
* </para>
* <para>
- * Within the snippet code for this hook there are two extra
- * variables. The first is a mat4 called cogl_matrix which represents
- * the user matrix for this layer. The second is called cogl_tex_coord
- * and represents the incoming and outgoing texture coordinate. On
- * entry to the hook, cogl_tex_coord contains the value of the
- * corresponding texture coordinate attribute for this layer. The hook
- * is expected to modify this variable. The output will be passed as a
- * varying to the fragment processing stage. The default code will
- * just multiply cogl_matrix by cogl_tex_coord and store the result in
- * cogl_tex_coord.
+ * Within the snippet code for this hook there is an extra variable
+ * called cogl_tex_coord and represents the incoming and outgoing
+ * texture coordinate. On entry to the hook, cogl_tex_coord contains
+ * the value of the corresponding texture coordinate attribute for
+ * this layer. The hook is expected to modify this variable. The
+ * output will be passed as a varying to the fragment processing
+ * stage. The default code will leave cogl_tex_coord untouched.
* </para>
* <para>
* The ‘declarations’ string in @snippet will be inserted in the
diff --git a/cogl/driver/gl/cogl-pipeline-progend-glsl.c b/cogl/driver/gl/cogl-pipeline-progend-glsl.c
index 245ed7f..484e356 100644
--- a/cogl/driver/gl/cogl-pipeline-progend-glsl.c
+++ b/cogl/driver/gl/cogl-pipeline-progend-glsl.c
@@ -91,11 +91,8 @@ const CoglPipelineProgend _cogl_pipeline_glsl_progend;
typedef struct _UnitState
{
unsigned int dirty_combine_constant:1;
- unsigned int dirty_texture_matrix:1;
GLint combine_constant_uniform;
-
- GLint texture_matrix_uniform;
} UnitState;
typedef struct
@@ -370,16 +367,6 @@ get_uniform_cb (CoglPipeline *pipeline,
unit_state->combine_constant_uniform = uniform_location;
- g_string_set_size (ctx->codegen_source_buffer, 0);
- g_string_append_printf (ctx->codegen_source_buffer,
- "cogl_texture_matrix%i", layer_index);
-
- GE_RET( uniform_location,
- ctx, glGetUniformLocation (state->gl_program,
- ctx->codegen_source_buffer->str) );
-
- unit_state->texture_matrix_uniform = uniform_location;
-
state->unit++;
return TRUE;
@@ -408,19 +395,6 @@ update_constants_cb (CoglPipeline *pipeline,
unit_state->dirty_combine_constant = FALSE;
}
- if (unit_state->texture_matrix_uniform != -1 &&
- (state->update_all || unit_state->dirty_texture_matrix))
- {
- const CoglMatrix *matrix;
- const float *array;
-
- matrix = _cogl_pipeline_get_layer_matrix (pipeline, layer_index);
- array = cogl_matrix_get_array (matrix);
- GE (ctx, glUniformMatrix4fv (unit_state->texture_matrix_uniform,
- 1, FALSE, array));
- unit_state->dirty_texture_matrix = FALSE;
- }
-
return TRUE;
}
@@ -833,16 +807,6 @@ _cogl_pipeline_progend_glsl_layer_pre_change_notify (
program_state->unit_state[unit_index].dirty_combine_constant = TRUE;
}
}
-
- if (change & COGL_PIPELINE_LAYER_STATE_USER_MATRIX)
- {
- CoglPipelineProgramState *program_state = get_program_state (owner);
- if (program_state)
- {
- int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
- program_state->unit_state[unit_index].dirty_texture_matrix = TRUE;
- }
- }
}
static void
diff --git a/cogl/driver/gl/cogl-pipeline-vertend-fixed.c b/cogl/driver/gl/cogl-pipeline-vertend-fixed.c
index 606cb41..61d9eba 100644
--- a/cogl/driver/gl/cogl-pipeline-vertend-fixed.c
+++ b/cogl/driver/gl/cogl-pipeline-vertend-fixed.c
@@ -57,29 +57,6 @@ _cogl_pipeline_vertend_fixed_add_layer (CoglPipeline *pipeline,
unsigned long layers_difference,
CoglFramebuffer *framebuffer)
{
- CoglContext *ctx = framebuffer->context;
- int unit_index = _cogl_pipeline_layer_get_unit_index (layer);
- CoglTextureUnit *unit = _cogl_get_texture_unit (unit_index);
-
- if (layers_difference & COGL_PIPELINE_LAYER_STATE_USER_MATRIX)
- {
- CoglPipelineLayerState state = COGL_PIPELINE_LAYER_STATE_USER_MATRIX;
- CoglPipelineLayer *authority =
- _cogl_pipeline_layer_get_authority (layer, state);
- CoglMatrixEntry *matrix_entry;
-
- _cogl_matrix_stack_set (unit->matrix_stack,
- &authority->big_state->matrix);
-
- _cogl_set_active_texture_unit (unit_index);
-
- matrix_entry = unit->matrix_stack->last_entry;
- _cogl_matrix_entry_flush_to_gl_builtins (ctx, matrix_entry,
- COGL_MATRIX_TEXTURE,
- framebuffer,
- FALSE /* enable flip */);
- }
-
return TRUE;
}
diff --git a/cogl/driver/gl/cogl-pipeline-vertend-glsl.c b/cogl/driver/gl/cogl-pipeline-vertend-glsl.c
index 6387473..13759ab 100644
--- a/cogl/driver/gl/cogl-pipeline-vertend-glsl.c
+++ b/cogl/driver/gl/cogl-pipeline-vertend-glsl.c
@@ -249,33 +249,23 @@ _cogl_pipeline_vertend_glsl_add_layer (CoglPipeline *pipeline,
return TRUE;
g_string_append_printf (shader_state->header,
- "uniform mat4 cogl_texture_matrix%i;\n"
"attribute vec4 cogl_tex_coord%i_in;\n"
"varying vec4 _cogl_tex_coord%i;\n"
"#define cogl_tex_coord%i_out _cogl_tex_coord%i\n",
layer_index,
layer_index,
layer_index,
- layer_index,
layer_index);
- /* Transform the texture coordinates by the layer's user matrix.
- *
- * FIXME: this should avoid doing the transform if there is no user
- * matrix set. This might need a separate layer state flag for
- * whether there is a user matrix
- *
- * FIXME: we could be more clever here and try to detect if the
- * fragment program is going to use the texture coordinates and
- * avoid setting them if not
+ /* Hook to transform the texture coordinates. By default this just
+ * directly uses the texture coordinates.
*/
g_string_append_printf (shader_state->header,
"vec4\n"
- "cogl_real_transform_layer%i (mat4 matrix, "
- "vec4 tex_coord)\n"
+ "cogl_real_transform_layer%i (vec4 tex_coord)\n"
"{\n"
- " return matrix * tex_coord;\n"
+ " return tex_coord;\n"
"}\n",
layer_index);
@@ -292,8 +282,8 @@ _cogl_pipeline_vertend_glsl_add_layer (CoglPipeline *pipeline,
snippet_data.return_type = "vec4";
snippet_data.return_variable = "cogl_tex_coord";
snippet_data.return_variable_is_argument = TRUE;
- snippet_data.arguments = "cogl_matrix, cogl_tex_coord";
- snippet_data.argument_declarations = "mat4 cogl_matrix, vec4 cogl_tex_coord";
+ snippet_data.arguments = "cogl_tex_coord";
+ snippet_data.argument_declarations = "vec4 cogl_tex_coord";
snippet_data.source_buf = shader_state->header;
_cogl_pipeline_snippet_generate_code (&snippet_data);
@@ -304,10 +294,7 @@ _cogl_pipeline_vertend_glsl_add_layer (CoglPipeline *pipeline,
g_string_append_printf (shader_state->source,
" cogl_tex_coord%i_out = "
- "cogl_transform_layer%i (cogl_texture_matrix%i,\n"
- " "
- " cogl_tex_coord%i_in);\n",
- layer_index,
+ "cogl_transform_layer%i (cogl_tex_coord%i_in);\n",
layer_index,
layer_index,
layer_index);
diff --git a/doc/reference/cogl2/cogl2-sections.txt b/doc/reference/cogl2/cogl2-sections.txt
index ba43264..004c0c0 100644
--- a/doc/reference/cogl2/cogl2-sections.txt
+++ b/doc/reference/cogl2/cogl2-sections.txt
@@ -617,7 +617,6 @@ cogl_pipeline_set_layer_wrap_mode_t
cogl_pipeline_set_layer_wrap_mode_p
cogl_pipeline_set_layer_combine
cogl_pipeline_set_layer_combine_constant
-cogl_pipeline_set_layer_matrix
cogl_pipeline_set_layer_point_sprite_coords_enabled
cogl_pipeline_get_layer_point_sprite_coords_enabled
diff --git a/tests/conform/Makefile.am b/tests/conform/Makefile.am
index b6430e2..3645f14 100644
--- a/tests/conform/Makefile.am
+++ b/tests/conform/Makefile.am
@@ -35,7 +35,6 @@ test_sources = \
test-backface-culling.c \
test-just-vertex-shader.c \
test-path.c \
- test-pipeline-user-matrix.c \
test-pipeline-uniforms.c \
test-pixel-buffer.c \
test-premult.c \
diff --git a/tests/conform/test-conform-main.c b/tests/conform/test-conform-main.c
index b510543..5b89870 100644
--- a/tests/conform/test-conform-main.c
+++ b/tests/conform/test-conform-main.c
@@ -52,7 +52,6 @@ main (int argc, char **argv)
UNPORTED_TEST (test_object);
UNPORTED_TEST (test_fixed);
UNPORTED_TEST (test_materials);
- ADD_TEST (test_pipeline_user_matrix, 0, 0);
ADD_TEST (test_blend_strings, 0, 0);
ADD_TEST (test_premult, 0, 0);
UNPORTED_TEST (test_readpixels);
diff --git a/tests/conform/test-pipeline-user-matrix.c b/tests/conform/test-pipeline-user-matrix.c
deleted file mode 100644
index 9a7beea..0000000
--- a/tests/conform/test-pipeline-user-matrix.c
+++ /dev/null
@@ -1,141 +0,0 @@
-#include <cogl/cogl.h>
-
-#include <string.h>
-
-#include "test-utils.h"
-
-typedef struct _TestState
-{
- int width;
- int height;
-} TestState;
-
-static void
-validate_result (TestState *state)
-{
- uint32_t *pixels, *p;
- char *screen_pixel;
- const char *intended_pixel = "#ffffff";
-
- /* The textures are setup so that when added together with the
- correct matrices then all of the pixels should be white. We can
- verify this by reading back the entire stage */
- pixels = g_malloc (state->width * state->height * 4);
-
- cogl_framebuffer_read_pixels (test_fb,
- 0, 0, state->width, state->height,
- COGL_PIXEL_FORMAT_RGBA_8888_PRE,
- (uint8_t *)pixels);
-
- for (p = pixels; p < pixels + state->width * state->height; p++)
- {
- screen_pixel = g_strdup_printf ("#%06x", GUINT32_FROM_BE (*p) >> 8);
- g_assert_cmpstr (screen_pixel, ==, intended_pixel);
- g_free (screen_pixel);
- }
-}
-
-static void
-paint (TestState *state)
-{
- /* This texture is painted mirrored around the x-axis */
- uint8_t data0[] = {
- 0xff, 0x00, 0x00, /* red -> becomes bottom left */
- 0x00, 0xff, 0x00, /* green -> becomes bottom right */
- 0x00, 0x00, 0xff, /* blue -> becomes top left */
- 0xff, 0x00, 0xff /* magenta -> becomes top right */
- };
- /* This texture is painted mirrored about the y-axis */
- uint8_t data1[] = {
- 0x00, 0xff, 0x00, /* green -> becomes top right */
- 0xff, 0xff, 0x00, /* yellow -> becomes top left */
- 0xff, 0x00, 0xff, /* magenta -> becomes bottom right */
- 0x00, 0xff, 0xff /* cyan -> becomes bottom left */
- };
- CoglTexture *tex0, *tex1;
- CoglPipeline *pipeline;
- CoglMatrix matrix;
- CoglError *error = NULL;
-
- cogl_framebuffer_orthographic (test_fb,
- 0, 0,
- state->width,
- state->height,
- -1,
- 100);
-
- cogl_framebuffer_clear4f (test_fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
-
- cogl_matrix_init_identity (&matrix);
- cogl_framebuffer_set_modelview_matrix (test_fb, &matrix);
-
- tex0 = cogl_texture_new_from_data (2, 2,
- COGL_TEXTURE_NO_ATLAS,
- COGL_PIXEL_FORMAT_RGB_888,
- COGL_PIXEL_FORMAT_ANY,
- 6,
- data0);
- tex1 = cogl_texture_new_from_data (2, 2,
- COGL_TEXTURE_NO_ATLAS,
- COGL_PIXEL_FORMAT_RGB_888,
- COGL_PIXEL_FORMAT_ANY,
- 6,
- data1);
-
- pipeline = cogl_pipeline_new (test_ctx);
-
- /* Set the two textures as layers */
- cogl_pipeline_set_layer_texture (pipeline, 0, tex0);
- cogl_pipeline_set_layer_filters (pipeline, 0,
- COGL_PIPELINE_FILTER_NEAREST,
- COGL_PIPELINE_FILTER_NEAREST);
- cogl_pipeline_set_layer_texture (pipeline, 1, tex1);
- cogl_pipeline_set_layer_filters (pipeline, 1,
- COGL_PIPELINE_FILTER_NEAREST,
- COGL_PIPELINE_FILTER_NEAREST);
-
- /* Set a combine mode so that the two textures get added together */
- if (!cogl_pipeline_set_layer_combine (pipeline, 1,
- "RGBA=ADD(PREVIOUS, TEXTURE)",
- &error))
- {
- g_warning ("Error setting blend string: %s", error->message);
- g_assert_not_reached ();
- }
-
- /* Set a matrix on the first layer so that it will mirror about the y-axis */
- cogl_matrix_init_identity (&matrix);
- cogl_matrix_translate (&matrix, 0.0f, 1.0f, 0.0f);
- cogl_matrix_scale (&matrix, 1.0f, -1.0f, 1.0f);
- cogl_pipeline_set_layer_matrix (pipeline, 0, &matrix);
-
- /* Set a matrix on the second layer so that it will mirror about the x-axis */
- cogl_matrix_init_identity (&matrix);
- cogl_matrix_translate (&matrix, 1.0f, 0.0f, 0.0f);
- cogl_matrix_scale (&matrix, -1.0f, 1.0f, 1.0f);
- cogl_pipeline_set_layer_matrix (pipeline, 1, &matrix);
-
- cogl_framebuffer_draw_rectangle (test_fb,
- pipeline,
- 0, 0,
- state->width, state->height);
-
- cogl_object_unref (tex1);
- cogl_object_unref (tex0);
- cogl_object_unref (pipeline);
-}
-
-void
-test_pipeline_user_matrix (void)
-{
- TestState state;
-
- state.width = cogl_framebuffer_get_width (test_fb);
- state.height = cogl_framebuffer_get_height (test_fb);
-
- paint (&state);
- validate_result (&state);
-
- if (cogl_test_verbose ())
- g_print ("OK\n");
-}
diff --git a/tests/conform/test-snippets.c b/tests/conform/test-snippets.c
index 51bd090..eeb1cdb 100644
--- a/tests/conform/test-snippets.c
+++ b/tests/conform/test-snippets.c
@@ -430,15 +430,10 @@ test_modify_vertex_layer (TestState *state)
{
CoglPipeline *pipeline;
CoglSnippet *snippet;
- CoglMatrix matrix;
/* Test modifying the vertex layer code */
pipeline = create_texture_pipeline (state);
- cogl_matrix_init_identity (&matrix);
- cogl_matrix_translate (&matrix, 0.0f, 1.0f, 0.0f);
- cogl_pipeline_set_layer_matrix (pipeline, 0, &matrix);
-
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_TEXTURE_COORD_TRANSFORM,
NULL,
"cogl_tex_coord.x = 1.0;");
@@ -448,7 +443,7 @@ test_modify_vertex_layer (TestState *state)
cogl_framebuffer_draw_textured_rectangle (test_fb,
pipeline,
130, 0, 140, 10,
- 0, 0, 0, 0);
+ 0, 1, 0, 1);
cogl_object_unref (pipeline);
test_utils_check_pixel (test_fb, 135, 5, 0xffff00ff);
@@ -459,26 +454,21 @@ test_replace_vertex_layer (TestState *state)
{
CoglPipeline *pipeline;
CoglSnippet *snippet;
- CoglMatrix matrix;
/* Test replacing the vertex layer code */
pipeline = create_texture_pipeline (state);
- cogl_matrix_init_identity (&matrix);
- cogl_matrix_translate (&matrix, 0.0f, 1.0f, 0.0f);
- cogl_pipeline_set_layer_matrix (pipeline, 0, &matrix);
-
snippet = cogl_snippet_new (COGL_SNIPPET_HOOK_TEXTURE_COORD_TRANSFORM,
NULL,
NULL);
- cogl_snippet_set_replace (snippet, "cogl_tex_coord.x = 1.0;\n");
+ cogl_snippet_set_replace (snippet, "cogl_tex_coord.xy = vec2 (1.0, 0.0);\n");
cogl_pipeline_add_layer_snippet (pipeline, 0, snippet);
cogl_object_unref (snippet);
cogl_framebuffer_draw_textured_rectangle (test_fb,
pipeline,
140, 0, 150, 10,
- 0, 0, 0, 0);
+ 1, 1, 1, 1);
cogl_object_unref (pipeline);
test_utils_check_pixel (test_fb, 145, 5, 0x00ff00ff);
--
1.7.11.3.g3c3efa5
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