1c449c67f6
This removes the need to maintain an array of tex_coord varyings and instead we now just emit a varying per-layer uniquely named using a layer_number infix like cogl_tex_coord0_out and cogl_tex_coord0_in. Notable this patch also had to change the journal flushing code to use pipeline layer numbers to determine the name of texture coordinate attributes. We now also break batches by using a deeper comparison of layers so such that two pipelines with the same number of layers can now cause a batch break if they use different layer numbers. This adds an internal _cogl_pipeline_layer_numbers_equal() function that takes two pipelines and returns TRUE if they have the same number of layers and all the layer numbers are the same too, otherwise it returns FALSE. Where we used to break batches based on changes to the number of layers we now break according to the status of _cogl_pipeline_layer_numbers_equal Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit e55b64a9cdc93285049d9b969bef67484c2d9fb3) Note: this will cause a temporary regression for the Cogl 1.x CoglShader api since it will break compatibility with existing shaders that reference the texture varyings from the fragment shader. The intention is to follow up with another patch to add back CoglShader compatibility.
410 lines
14 KiB
C
410 lines
14 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2010,2011,2012 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Neil Roberts <neil@linux.intel.com>
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "cogl-private.h"
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#include "cogl-pipeline-opengl-private.h"
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#include "cogl-error-private.h"
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#include "cogl-context-private.h"
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#include "cogl-attribute.h"
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#include "cogl-attribute-private.h"
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#include "cogl-attribute-gl-private.h"
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#include "cogl-pipeline-progend-glsl-private.h"
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#include "cogl-buffer-gl-private.h"
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typedef struct _ForeachChangedBitState
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{
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CoglContext *context;
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const CoglBitmask *new_bits;
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CoglPipeline *pipeline;
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} ForeachChangedBitState;
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static CoglBool
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toggle_builtin_attribute_enabled_cb (int bit_num, void *user_data)
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{
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ForeachChangedBitState *state = user_data;
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CoglContext *context = state->context;
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_COGL_RETURN_VAL_IF_FAIL ((context->private_feature_flags &
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COGL_PRIVATE_FEATURE_FIXED_FUNCTION),
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FALSE);
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#if defined (HAVE_COGL_GL) || defined (HAVE_COGL_GLES)
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{
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CoglBool enabled = _cogl_bitmask_get (state->new_bits, bit_num);
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GLenum cap;
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switch (bit_num)
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{
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case COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY:
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cap = GL_COLOR_ARRAY;
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break;
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case COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY:
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cap = GL_VERTEX_ARRAY;
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break;
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case COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY:
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cap = GL_NORMAL_ARRAY;
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break;
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}
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if (enabled)
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GE (context, glEnableClientState (cap));
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else
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GE (context, glDisableClientState (cap));
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}
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#endif
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return TRUE;
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}
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static CoglBool
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toggle_texcood_attribute_enabled_cb (int bit_num, void *user_data)
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{
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ForeachChangedBitState *state = user_data;
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CoglContext *context = state->context;
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_COGL_RETURN_VAL_IF_FAIL ((context->private_feature_flags &
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COGL_PRIVATE_FEATURE_FIXED_FUNCTION),
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FALSE);
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#if defined (HAVE_COGL_GL) || defined (HAVE_COGL_GLES)
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{
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CoglBool enabled = _cogl_bitmask_get (state->new_bits, bit_num);
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GE( context, glClientActiveTexture (GL_TEXTURE0 + bit_num) );
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if (enabled)
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GE( context, glEnableClientState (GL_TEXTURE_COORD_ARRAY) );
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else
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GE( context, glDisableClientState (GL_TEXTURE_COORD_ARRAY) );
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}
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#endif
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return TRUE;
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}
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static CoglBool
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toggle_custom_attribute_enabled_cb (int bit_num, void *user_data)
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{
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ForeachChangedBitState *state = user_data;
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CoglBool enabled = _cogl_bitmask_get (state->new_bits, bit_num);
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CoglContext *context = state->context;
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if (enabled)
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GE( context, glEnableVertexAttribArray (bit_num) );
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else
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GE( context, glDisableVertexAttribArray (bit_num) );
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return TRUE;
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}
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static void
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foreach_changed_bit_and_save (CoglContext *context,
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CoglBitmask *current_bits,
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const CoglBitmask *new_bits,
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CoglBitmaskForeachFunc callback,
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ForeachChangedBitState *state)
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{
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/* Get the list of bits that are different */
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_cogl_bitmask_clear_all (&context->changed_bits_tmp);
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_cogl_bitmask_set_bits (&context->changed_bits_tmp, current_bits);
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_cogl_bitmask_xor_bits (&context->changed_bits_tmp, new_bits);
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/* Iterate over each bit to change */
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state->new_bits = new_bits;
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_cogl_bitmask_foreach (&context->changed_bits_tmp,
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callback,
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state);
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/* Store the new values */
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_cogl_bitmask_clear_all (current_bits);
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_cogl_bitmask_set_bits (current_bits, new_bits);
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}
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#ifdef COGL_PIPELINE_PROGEND_GLSL
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static void
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setup_generic_attribute (CoglContext *context,
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CoglPipeline *pipeline,
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CoglAttribute *attribute,
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uint8_t *base)
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{
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int name_index = attribute->name_state->name_index;
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int attrib_location =
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_cogl_pipeline_progend_glsl_get_attrib_location (pipeline, name_index);
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if (attrib_location != -1)
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{
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GE( context, glVertexAttribPointer (attrib_location,
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attribute->n_components,
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attribute->type,
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attribute->normalized,
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attribute->stride,
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base + attribute->offset) );
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_cogl_bitmask_set (&context->enable_custom_attributes_tmp,
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attrib_location, TRUE);
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}
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}
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#endif /* COGL_PIPELINE_PROGEND_GLSL */
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static void
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apply_attribute_enable_updates (CoglContext *context,
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CoglPipeline *pipeline)
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{
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ForeachChangedBitState changed_bits_state;
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changed_bits_state.context = context;
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changed_bits_state.new_bits = &context->enable_builtin_attributes_tmp;
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changed_bits_state.pipeline = pipeline;
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foreach_changed_bit_and_save (context,
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&context->enabled_builtin_attributes,
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&context->enable_builtin_attributes_tmp,
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toggle_builtin_attribute_enabled_cb,
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&changed_bits_state);
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changed_bits_state.new_bits = &context->enable_texcoord_attributes_tmp;
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foreach_changed_bit_and_save (context,
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&context->enabled_texcoord_attributes,
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&context->enable_texcoord_attributes_tmp,
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toggle_texcood_attribute_enabled_cb,
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&changed_bits_state);
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changed_bits_state.new_bits = &context->enable_custom_attributes_tmp;
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foreach_changed_bit_and_save (context,
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&context->enabled_custom_attributes,
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&context->enable_custom_attributes_tmp,
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toggle_custom_attribute_enabled_cb,
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&changed_bits_state);
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}
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void
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_cogl_gl_flush_attributes_state (CoglFramebuffer *framebuffer,
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CoglPipeline *pipeline,
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CoglFlushLayerState *layers_state,
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CoglDrawFlags flags,
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CoglAttribute **attributes,
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int n_attributes)
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{
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CoglContext *ctx = framebuffer->context;
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int i;
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CoglBool skip_gl_color = FALSE;
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CoglPipeline *copy = NULL;
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/* Iterate the attributes to work out whether blending needs to be
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enabled and how many texture coords there are. We need to do this
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before flushing the pipeline. */
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for (i = 0; i < n_attributes; i++)
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switch (attributes[i]->name_state->name_id)
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{
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case COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY:
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if ((flags & COGL_DRAW_COLOR_ATTRIBUTE_IS_OPAQUE) == 0 &&
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!_cogl_pipeline_get_real_blend_enabled (pipeline))
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{
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CoglPipelineBlendEnable blend_enable =
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COGL_PIPELINE_BLEND_ENABLE_ENABLED;
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copy = cogl_pipeline_copy (pipeline);
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_cogl_pipeline_set_blend_enabled (copy, blend_enable);
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pipeline = copy;
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}
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skip_gl_color = TRUE;
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break;
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default:
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break;
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}
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if (G_UNLIKELY (layers_state->options.flags))
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{
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/* If we haven't already created a derived pipeline... */
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if (!copy)
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{
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copy = cogl_pipeline_copy (pipeline);
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pipeline = copy;
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}
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_cogl_pipeline_apply_overrides (pipeline, &layers_state->options);
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/* TODO:
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* overrides = cogl_pipeline_get_data (pipeline,
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* last_overrides_key);
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* if (overrides)
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* {
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* age = cogl_pipeline_get_age (pipeline);
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* XXX: actually we also need to check for legacy_state
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* and blending overrides for use of glColorPointer...
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* if (overrides->ags != age ||
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* memcmp (&overrides->options, &options,
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* sizeof (options) != 0)
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* {
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* cogl_object_unref (overrides->weak_pipeline);
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* g_slice_free (Overrides, overrides);
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* overrides = NULL;
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* }
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* }
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* if (!overrides)
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* {
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* overrides = g_slice_new (Overrides);
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* overrides->weak_pipeline =
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* cogl_pipeline_weak_copy (pipeline);
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* _cogl_pipeline_apply_overrides (overrides->weak_pipeline,
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* &options);
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*
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* cogl_pipeline_set_data (pipeline, last_overrides_key,
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* weak_overrides,
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* free_overrides_cb,
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* NULL);
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* }
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* pipeline = overrides->weak_pipeline;
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*/
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}
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_cogl_pipeline_flush_gl_state (pipeline,
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framebuffer,
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skip_gl_color);
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_cogl_bitmask_clear_all (&ctx->enable_builtin_attributes_tmp);
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_cogl_bitmask_clear_all (&ctx->enable_texcoord_attributes_tmp);
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_cogl_bitmask_clear_all (&ctx->enable_custom_attributes_tmp);
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/* Bind the attribute pointers. We need to do this after the
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* pipeline is flushed because when using GLSL that is the only
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* point when we can determine the attribute locations */
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for (i = 0; i < n_attributes; i++)
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{
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CoglAttribute *attribute = attributes[i];
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CoglAttributeBuffer *attribute_buffer;
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CoglBuffer *buffer;
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uint8_t *base;
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attribute_buffer = cogl_attribute_get_buffer (attribute);
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buffer = COGL_BUFFER (attribute_buffer);
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base = _cogl_buffer_gl_bind (buffer, COGL_BUFFER_BIND_TARGET_ATTRIBUTE_BUFFER);
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switch (attribute->name_state->name_id)
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{
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case COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY:
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#ifdef COGL_PIPELINE_PROGEND_GLSL
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if (pipeline->progend == COGL_PIPELINE_PROGEND_GLSL)
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setup_generic_attribute (ctx, pipeline, attribute, base);
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else
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#endif
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{
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_cogl_bitmask_set (&ctx->enable_builtin_attributes_tmp,
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COGL_ATTRIBUTE_NAME_ID_COLOR_ARRAY, TRUE);
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GE (ctx, glColorPointer (attribute->n_components,
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attribute->type,
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attribute->stride,
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base + attribute->offset));
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}
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break;
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case COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY:
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#ifdef COGL_PIPELINE_PROGEND_GLSL
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if (pipeline->progend == COGL_PIPELINE_PROGEND_GLSL)
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setup_generic_attribute (ctx, pipeline, attribute, base);
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else
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#endif
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{
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_cogl_bitmask_set (&ctx->enable_builtin_attributes_tmp,
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COGL_ATTRIBUTE_NAME_ID_NORMAL_ARRAY, TRUE);
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GE (ctx, glNormalPointer (attribute->type,
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attribute->stride,
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base + attribute->offset));
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}
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break;
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case COGL_ATTRIBUTE_NAME_ID_TEXTURE_COORD_ARRAY:
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#ifdef COGL_PIPELINE_PROGEND_GLSL
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if (pipeline->progend == COGL_PIPELINE_PROGEND_GLSL)
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setup_generic_attribute (ctx, pipeline, attribute, base);
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else
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#endif
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{
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int layer_number = attribute->name_state->layer_number;
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CoglPipelineLayer *layer =
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_cogl_pipeline_get_layer (pipeline, layer_number);
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int unit = _cogl_pipeline_layer_get_unit_index (layer);
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_cogl_bitmask_set (&ctx->enable_texcoord_attributes_tmp,
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unit, TRUE);
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GE (ctx, glClientActiveTexture (GL_TEXTURE0 + unit));
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GE (ctx, glTexCoordPointer (attribute->n_components,
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attribute->type,
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attribute->stride,
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base + attribute->offset));
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}
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break;
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case COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY:
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#ifdef COGL_PIPELINE_PROGEND_GLSL
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if (pipeline->progend == COGL_PIPELINE_PROGEND_GLSL)
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setup_generic_attribute (ctx, pipeline, attribute, base);
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else
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#endif
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{
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_cogl_bitmask_set (&ctx->enable_builtin_attributes_tmp,
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COGL_ATTRIBUTE_NAME_ID_POSITION_ARRAY, TRUE);
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GE (ctx, glVertexPointer (attribute->n_components,
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attribute->type,
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attribute->stride,
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base + attribute->offset));
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}
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break;
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case COGL_ATTRIBUTE_NAME_ID_CUSTOM_ARRAY:
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#ifdef COGL_PIPELINE_PROGEND_GLSL
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if (pipeline->progend == COGL_PIPELINE_PROGEND_GLSL)
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setup_generic_attribute (ctx, pipeline, attribute, base);
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#endif
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break;
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default:
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g_warning ("Unrecognised attribute type 0x%08x", attribute->type);
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}
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_cogl_buffer_gl_unbind (buffer);
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}
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apply_attribute_enable_updates (ctx, pipeline);
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if (copy)
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cogl_object_unref (copy);
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}
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void
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_cogl_gl_disable_all_attributes (CoglContext *ctx)
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{
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_cogl_bitmask_clear_all (&ctx->enable_builtin_attributes_tmp);
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_cogl_bitmask_clear_all (&ctx->enable_texcoord_attributes_tmp);
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_cogl_bitmask_clear_all (&ctx->enable_custom_attributes_tmp);
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/* XXX: we can pass a NULL source pipeline here because we know a
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* source pipeline only needs to be referenced when enabling
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* attributes. */
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apply_attribute_enable_updates (ctx, NULL);
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}
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