6400b455b8
This splits the GL header inclusion from cogl-defines.h into a separate headear called cogl-gl-header.h which we will only include internally. That way we don't leak GL declarations out of our public headers. The texture functions that were using GLenum and GLuint in the public header have now changed to just use unsigned int. Note however that if an EGL winsys is enabled then it will still publicly include an EGL header. This is a bit more awkward to fix because we have public API which returns an EGLDisplay and we can't determine what type that is. There is also a conformance test which just verifies that no GL header has been included while compiling. The test isn't added to test-conform-main because it doesn't actually test anything at runtime. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit ef5680d3fda5df929dbd0b420c8f598ded58dfee)
347 lines
12 KiB
C
347 lines
12 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) 2007,2008,2009 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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#ifndef __COGL_CONTEXT_PRIVATE_H
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#define __COGL_CONTEXT_PRIVATE_H
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#include "cogl-internal.h"
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#include "cogl-context.h"
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#include "cogl-winsys-private.h"
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#include "cogl-flags.h"
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#ifdef COGL_HAS_XLIB_SUPPORT
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#include "cogl-xlib-private.h"
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#endif
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#include "cogl-display-private.h"
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#include "cogl-primitives.h"
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#include "cogl-clip-stack.h"
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#include "cogl-matrix-stack.h"
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#include "cogl-pipeline-private.h"
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#include "cogl-buffer-private.h"
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#include "cogl-bitmask.h"
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#include "cogl-atlas.h"
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#include "cogl-driver.h"
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#include "cogl-texture-driver.h"
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#include "cogl-pipeline-cache.h"
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#include "cogl-texture-2d.h"
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#include "cogl-texture-3d.h"
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#include "cogl-texture-rectangle.h"
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#include "cogl-sampler-cache-private.h"
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#include "cogl-gpu-info-private.h"
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#include "cogl-gl-header.h"
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typedef struct
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{
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GLfloat v[3];
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GLfloat t[2];
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GLubyte c[4];
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} CoglTextureGLVertex;
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struct _CoglContext
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{
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CoglObject _parent;
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CoglDisplay *display;
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CoglDriver driver;
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/* Information about the GPU and driver which we can use to
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determine certain workarounds */
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CoglGpuInfo gpu;
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/* vtables for the driver functions */
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const CoglDriverVtable *driver_vtable;
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const CoglTextureDriver *texture_driver;
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/* Features cache */
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unsigned long features[COGL_FLAGS_N_LONGS_FOR_SIZE (_COGL_N_FEATURE_IDS)];
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CoglFeatureFlags feature_flags; /* legacy/deprecated feature flags */
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CoglPrivateFeatureFlags private_feature_flags;
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CoglPipeline *default_pipeline;
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CoglPipelineLayer *default_layer_0;
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CoglPipelineLayer *default_layer_n;
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CoglPipelineLayer *dummy_layer_dependant;
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GHashTable *attribute_name_states_hash;
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GArray *attribute_name_index_map;
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int n_attribute_names;
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CoglBitmask enabled_builtin_attributes;
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CoglBitmask enabled_texcoord_attributes;
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CoglBitmask enabled_custom_attributes;
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/* These are temporary bitmasks that are used when disabling
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* builtin,texcoord and custom attribute arrays. They are here just
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* to avoid allocating new ones each time */
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CoglBitmask enable_builtin_attributes_tmp;
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CoglBitmask enable_texcoord_attributes_tmp;
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CoglBitmask enable_custom_attributes_tmp;
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CoglBitmask changed_bits_tmp;
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gboolean legacy_backface_culling_enabled;
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/* A few handy matrix constants */
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CoglMatrix identity_matrix;
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CoglMatrix y_flip_matrix;
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/* Value that was last used when calling glMatrixMode to avoid
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calling it multiple times */
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CoglMatrixMode flushed_matrix_mode;
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/* The matrix stack that should be used for the next render */
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CoglMatrixStack *current_projection_stack;
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CoglMatrixStack *current_modelview_stack;
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/* The last matrix stack with age that was flushed to the GL matrix
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builtins */
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CoglMatrixStackCache builtin_flushed_projection;
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CoglMatrixStackCache builtin_flushed_modelview;
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GArray *texture_units;
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int active_texture_unit;
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CoglPipelineFogState legacy_fog_state;
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/* Pipelines */
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CoglPipeline *opaque_color_pipeline; /* used for set_source_color */
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CoglPipeline *blended_color_pipeline; /* used for set_source_color */
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CoglPipeline *texture_pipeline; /* used for set_source_texture */
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GString *codegen_header_buffer;
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GString *codegen_source_buffer;
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GList *source_stack;
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int legacy_state_set;
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CoglPipelineCache *pipeline_cache;
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/* Textures */
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CoglTexture2D *default_gl_texture_2d_tex;
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CoglTexture3D *default_gl_texture_3d_tex;
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CoglTextureRectangle *default_gl_texture_rect_tex;
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/* Central list of all framebuffers so all journals can be flushed
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* at any time. */
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GList *framebuffers;
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/* Global journal buffers */
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GArray *journal_flush_attributes_array;
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GArray *journal_clip_bounds;
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GArray *polygon_vertices;
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/* Some simple caching, to minimize state changes... */
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CoglPipeline *current_pipeline;
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unsigned long current_pipeline_changes_since_flush;
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gboolean current_pipeline_skip_gl_color;
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unsigned long current_pipeline_age;
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gboolean gl_blend_enable_cache;
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gboolean depth_test_enabled_cache;
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CoglDepthTestFunction depth_test_function_cache;
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gboolean depth_writing_enabled_cache;
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float depth_range_near_cache;
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float depth_range_far_cache;
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gboolean legacy_depth_test_enabled;
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CoglBuffer *current_buffer[COGL_BUFFER_BIND_TARGET_COUNT];
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/* Framebuffers */
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GSList *framebuffer_stack;
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CoglHandle window_buffer;
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unsigned long current_draw_buffer_state_flushed;
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unsigned long current_draw_buffer_changes;
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CoglFramebuffer *current_draw_buffer;
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CoglFramebuffer *current_read_buffer;
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/* Primitives */
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CoglPath *current_path;
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CoglPipeline *stencil_pipeline;
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/* Pre-generated VBOs containing indices to generate GL_TRIANGLES
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out of a vertex array of quads */
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CoglHandle quad_buffer_indices_byte;
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unsigned int quad_buffer_indices_len;
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CoglHandle quad_buffer_indices;
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CoglIndices *rectangle_byte_indices;
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CoglIndices *rectangle_short_indices;
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int rectangle_short_indices_len;
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gboolean in_begin_gl_block;
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CoglPipeline *texture_download_pipeline;
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CoglPipeline *blit_texture_pipeline;
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GSList *atlases;
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GHookList atlas_reorganize_callbacks;
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/* This debugging variable is used to pick a colour for visually
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displaying the quad batches. It needs to be global so that it can
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be reset by cogl_clear. It needs to be reset to increase the
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chances of getting the same colour during an animation */
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guint8 journal_rectangles_color;
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/* Cached values for GL_MAX_TEXTURE_[IMAGE_]UNITS to avoid calling
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glGetInteger too often */
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GLint max_texture_units;
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GLint max_texture_image_units;
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GLint max_activateable_texture_units;
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/* Fragment processing programs */
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CoglHandle current_program;
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CoglPipelineProgramType current_fragment_program_type;
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CoglPipelineProgramType current_vertex_program_type;
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GLuint current_gl_program;
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gboolean current_gl_dither_enabled;
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CoglColorMask current_gl_color_mask;
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/* List of types that will be considered a subclass of CoglTexture in
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cogl_is_texture */
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GSList *texture_types;
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/* List of types that will be considered a subclass of CoglBuffer in
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cogl_is_buffer */
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GSList *buffer_types;
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/* Clipping */
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/* TRUE if we have a valid clipping stack flushed. In that case
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current_clip_stack will describe what the current state is. If
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this is FALSE then the current clip stack is completely unknown
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so it will need to be reflushed. In that case current_clip_stack
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doesn't need to be a valid pointer. We can't just use NULL in
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current_clip_stack to mark a dirty state because NULL is a valid
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stack (meaning no clipping) */
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gboolean current_clip_stack_valid;
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/* The clip state that was flushed. This isn't intended to be used
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as a stack to push and pop new entries. Instead the current stack
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that the user wants is part of the framebuffer state. This is
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just used to record the flush state so we can avoid flushing the
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same state multiple times. When the clip state is flushed this
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will hold a reference */
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CoglClipStack *current_clip_stack;
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/* Whether the stencil buffer was used as part of the current clip
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state. If TRUE then any further use of the stencil buffer (such
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as for drawing paths) would need to be merged with the existing
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stencil buffer */
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gboolean current_clip_stack_uses_stencil;
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/* This is used as a temporary buffer to fill a CoglBuffer when
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cogl_buffer_map fails and we only want to map to fill it with new
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data */
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GByteArray *buffer_map_fallback_array;
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gboolean buffer_map_fallback_in_use;
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CoglWinsysRectangleState rectangle_state;
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CoglSamplerCache *sampler_cache;
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/* FIXME: remove these when we remove the last xlib based clutter
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* backend. they should be tracked as part of the renderer but e.g.
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* the eglx backend doesn't yet have a corresponding Cogl winsys
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* and so we wont have a renderer in that case. */
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#ifdef COGL_HAS_XLIB_SUPPORT
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int damage_base;
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/* List of callback functions that will be given every Xlib event */
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GSList *event_filters;
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/* Current top of the XError trap state stack. The actual memory for
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these is expected to be allocated on the stack by the caller */
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CoglXlibTrapState *trap_state;
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#endif
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unsigned long winsys_features
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[COGL_FLAGS_N_LONGS_FOR_SIZE (COGL_WINSYS_FEATURE_N_FEATURES)];
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void *winsys;
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/* Array of names of uniforms. These are used like quarks to give a
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unique number to each uniform name except that we ensure that
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they increase sequentially so that we can use the id as an index
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into a bitfield representing the uniforms that a pipeline
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overrides from its parent. */
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GPtrArray *uniform_names;
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/* A hash table to quickly get an index given an existing name. The
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name strings are owned by the uniform_names array. The values are
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the uniform location cast to a pointer. */
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GHashTable *uniform_name_hash;
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int n_uniform_names;
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/* This defines a list of function pointers that Cogl uses from
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either GL or GLES. All functions are accessed indirectly through
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these pointers rather than linking to them directly */
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#ifndef APIENTRY
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#define APIENTRY
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#endif
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#define COGL_EXT_BEGIN(name, \
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min_gl_major, min_gl_minor, \
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gles_availability, \
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extension_suffixes, extension_names)
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#define COGL_EXT_FUNCTION(ret, name, args) \
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ret (APIENTRY * name) args;
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#define COGL_EXT_END()
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#include "gl-prototypes/cogl-all-functions.h"
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#undef COGL_EXT_BEGIN
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#undef COGL_EXT_FUNCTION
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#undef COGL_EXT_END
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};
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CoglContext *
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_cogl_context_get_default ();
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const CoglWinsysVtable *
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_cogl_context_get_winsys (CoglContext *context);
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/* Query the GL extensions and lookup the corresponding function
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* pointers. Theoretically the list of extensions can change for
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* different GL contexts so it is the winsys backend's responsiblity
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* to know when to re-query the GL extensions. The backend should also
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* check whether the GL context is supported by Cogl. If not it should
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* return FALSE and set @error */
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gboolean
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_cogl_context_update_features (CoglContext *context,
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GError **error);
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/* Obtains the context and returns retval if NULL */
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#define _COGL_GET_CONTEXT(ctxvar, retval) \
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CoglContext *ctxvar = _cogl_context_get_default (); \
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if (ctxvar == NULL) return retval;
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#define NO_RETVAL
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void
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_cogl_context_set_current_projection (CoglContext *context,
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CoglMatrixStack *stack);
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void
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_cogl_context_set_current_modelview (CoglContext *context,
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CoglMatrixStack *stack);
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#endif /* __COGL_CONTEXT_PRIVATE_H */
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