mirror of
https://github.com/brl/mutter.git
synced 2024-12-24 12:02:04 +00:00
0c732c27ae
We want to reuse the same buffers for vertends so calling them fragment_* doesn't make sense.
234 lines
7.4 KiB
C
234 lines
7.4 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2007,2008,2009 Intel Corporation.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifndef __COGL_CONTEXT_H
|
|
#define __COGL_CONTEXT_H
|
|
|
|
#include "cogl-internal.h"
|
|
|
|
#if HAVE_COGL_GL
|
|
#include "cogl-context-driver-gl.h"
|
|
#endif
|
|
|
|
#if HAVE_COGL_GLES || HAVE_COGL_GLES2
|
|
#include "cogl-context-driver-gles.h"
|
|
#endif
|
|
|
|
#include "cogl-context-winsys.h"
|
|
#include "cogl-primitives.h"
|
|
#include "cogl-clip-stack.h"
|
|
#include "cogl-matrix-stack.h"
|
|
#include "cogl-pipeline-private.h"
|
|
#include "cogl-buffer-private.h"
|
|
#include "cogl-bitmask.h"
|
|
#include "cogl-atlas.h"
|
|
|
|
typedef struct
|
|
{
|
|
GLfloat v[3];
|
|
GLfloat t[2];
|
|
GLubyte c[4];
|
|
} CoglTextureGLVertex;
|
|
|
|
typedef struct
|
|
{
|
|
/* Features cache */
|
|
CoglFeatureFlags feature_flags;
|
|
CoglFeatureFlagsPrivate feature_flags_private;
|
|
|
|
CoglHandle default_pipeline;
|
|
CoglHandle default_layer_0;
|
|
CoglHandle default_layer_n;
|
|
CoglHandle dummy_layer_dependant;
|
|
|
|
/* Enable cache */
|
|
unsigned long enable_flags;
|
|
|
|
gboolean enable_backface_culling;
|
|
CoglFrontWinding flushed_front_winding;
|
|
|
|
gboolean indirect;
|
|
|
|
/* A few handy matrix constants */
|
|
CoglMatrix identity_matrix;
|
|
CoglMatrix y_flip_matrix;
|
|
|
|
/* Client-side matrix stack or NULL if none */
|
|
CoglMatrixMode flushed_matrix_mode;
|
|
|
|
GArray *texture_units;
|
|
int active_texture_unit;
|
|
|
|
CoglPipelineFogState legacy_fog_state;
|
|
|
|
/* Pipelines */
|
|
CoglPipeline *opaque_color_pipeline; /* used for set_source_color */
|
|
CoglPipeline *blended_color_pipeline; /* used for set_source_color */
|
|
CoglPipeline *texture_pipeline; /* used for set_source_texture */
|
|
GString *codegen_header_buffer;
|
|
GString *codegen_source_buffer;
|
|
GList *source_stack;
|
|
|
|
int legacy_state_set;
|
|
|
|
#ifdef HAVE_COGL_GL
|
|
GHashTable *arbfp_cache;
|
|
#endif
|
|
|
|
/* Textures */
|
|
CoglHandle default_gl_texture_2d_tex;
|
|
CoglHandle default_gl_texture_rect_tex;
|
|
|
|
/* Batching geometry... */
|
|
/* We journal the texture rectangles we want to submit to OpenGL so
|
|
* we have an oppertunity to optimise the final order so that we
|
|
* can batch things together. */
|
|
GArray *journal;
|
|
GArray *logged_vertices;
|
|
GArray *journal_flush_attributes_array;
|
|
size_t journal_needed_vbo_len;
|
|
GArray *journal_clip_bounds;
|
|
|
|
GArray *polygon_vertices;
|
|
|
|
/* Some simple caching, to minimize state changes... */
|
|
CoglPipeline *current_pipeline;
|
|
unsigned long current_pipeline_changes_since_flush;
|
|
gboolean current_pipeline_skip_gl_color;
|
|
unsigned long current_pipeline_age;
|
|
|
|
GArray *pipeline0_nodes;
|
|
GArray *pipeline1_nodes;
|
|
|
|
/* Bitmask of texture coordinates arrays that are enabled */
|
|
CoglBitmask texcoord_arrays_enabled;
|
|
/* These are temporary bitmasks that are used when disabling
|
|
texcoord arrays. They are here just to avoid allocating new ones
|
|
each time */
|
|
CoglBitmask texcoord_arrays_to_disable;
|
|
CoglBitmask temp_bitmask;
|
|
|
|
gboolean gl_blend_enable_cache;
|
|
|
|
gboolean depth_test_enabled_cache;
|
|
CoglDepthTestFunction depth_test_function_cache;
|
|
gboolean depth_writing_enabled_cache;
|
|
float depth_range_near_cache;
|
|
float depth_range_far_cache;
|
|
|
|
gboolean legacy_depth_test_enabled;
|
|
|
|
float point_size_cache;
|
|
|
|
CoglBuffer *current_buffer[COGL_BUFFER_BIND_TARGET_COUNT];
|
|
|
|
/* Framebuffers */
|
|
GSList *framebuffer_stack;
|
|
CoglHandle window_buffer;
|
|
gboolean dirty_bound_framebuffer;
|
|
gboolean dirty_gl_viewport;
|
|
|
|
/* Primitives */
|
|
CoglPath *current_path;
|
|
CoglPipeline *stencil_pipeline;
|
|
|
|
/* Pre-generated VBOs containing indices to generate GL_TRIANGLES
|
|
out of a vertex array of quads */
|
|
CoglHandle quad_buffer_indices_byte;
|
|
unsigned int quad_buffer_indices_len;
|
|
CoglHandle quad_buffer_indices;
|
|
|
|
CoglIndices *rectangle_byte_indices;
|
|
CoglIndices *rectangle_short_indices;
|
|
int rectangle_short_indices_len;
|
|
|
|
gboolean in_begin_gl_block;
|
|
|
|
CoglPipeline *texture_download_pipeline;
|
|
|
|
CoglAtlas *atlas;
|
|
|
|
/* This debugging variable is used to pick a colour for visually
|
|
displaying the quad batches. It needs to be global so that it can
|
|
be reset by cogl_clear. It needs to be reset to increase the
|
|
chances of getting the same colour during an animation */
|
|
guint8 journal_rectangles_color;
|
|
|
|
/* Cached values for GL_MAX_TEXTURE_[IMAGE_]UNITS to avoid calling
|
|
glGetInteger too often */
|
|
GLint max_texture_units;
|
|
GLint max_texture_image_units;
|
|
GLint max_activateable_texture_units;
|
|
|
|
/* Fragment processing programs */
|
|
CoglHandle current_program;
|
|
|
|
CoglPipelineProgramType current_use_program_type;
|
|
GLuint current_gl_program;
|
|
|
|
/* List of types that will be considered a subclass of CoglTexture in
|
|
cogl_is_texture */
|
|
GSList *texture_types;
|
|
|
|
/* List of types that will be considered a subclass of CoglBuffer in
|
|
cogl_is_buffer */
|
|
GSList *buffer_types;
|
|
|
|
/* Clipping */
|
|
/* TRUE if we have a valid clipping stack flushed. In that case
|
|
current_clip_stack will describe what the current state is. If
|
|
this is FALSE then the current clip stack is completely unknown
|
|
so it will need to be reflushed. In that case current_clip_stack
|
|
doesn't need to be a valid pointer. We can't just use NULL in
|
|
current_clip_stack to mark a dirty state because NULL is a valid
|
|
stack (meaning no clipping) */
|
|
gboolean current_clip_stack_valid;
|
|
/* The clip state that was flushed. This isn't intended to be used
|
|
as a stack to push and pop new entries. Instead the current stack
|
|
that the user wants is part of the framebuffer state. This is
|
|
just used to record the flush state so we can avoid flushing the
|
|
same state multiple times. When the clip state is flushed this
|
|
will hold a reference */
|
|
CoglClipStack *current_clip_stack;
|
|
/* Whether the stencil buffer was used as part of the current clip
|
|
state. If TRUE then any further use of the stencil buffer (such
|
|
as for drawing paths) would need to be merged with the existing
|
|
stencil buffer */
|
|
gboolean current_clip_stack_uses_stencil;
|
|
|
|
CoglContextDriver drv;
|
|
CoglContextWinsys winsys;
|
|
} CoglContext;
|
|
|
|
CoglContext *
|
|
_cogl_context_get_default ();
|
|
|
|
/* Obtains the context and returns retval if NULL */
|
|
#define _COGL_GET_CONTEXT(ctxvar, retval) \
|
|
CoglContext *ctxvar = _cogl_context_get_default (); \
|
|
if (ctxvar == NULL) return retval;
|
|
|
|
#define NO_RETVAL
|
|
|
|
#endif /* __COGL_CONTEXT_H */
|