| /** |
| * \file blend.h |
| * Blending functions operations. |
| */ |
| |
| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| |
| |
| #ifndef BLEND_H |
| #define BLEND_H |
| |
| |
| #include "glheader.h" |
| #include "context.h" |
| #include "formats.h" |
| #include "extensions.h" |
| |
| struct gl_context; |
| struct gl_framebuffer; |
| |
| |
| extern void GLAPIENTRY |
| _mesa_BlendFunc( GLenum sfactor, GLenum dfactor ); |
| |
| extern void GLAPIENTRY |
| _mesa_BlendFunc_no_error(GLenum sfactor, GLenum dfactor); |
| |
| extern void GLAPIENTRY |
| _mesa_BlendFuncSeparate( GLenum sfactorRGB, GLenum dfactorRGB, |
| GLenum sfactorA, GLenum dfactorA ); |
| |
| extern void GLAPIENTRY |
| _mesa_BlendFuncSeparate_no_error(GLenum sfactorRGB, GLenum dfactorRGB, |
| GLenum sfactorA, GLenum dfactorA); |
| |
| extern void GLAPIENTRY |
| _mesa_BlendFunciARB_no_error(GLuint buf, GLenum sfactor, GLenum dfactor); |
| extern void GLAPIENTRY |
| _mesa_BlendFunciARB(GLuint buf, GLenum sfactor, GLenum dfactor); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_BlendFuncSeparateiARB_no_error(GLuint buf, GLenum sfactorRGB, |
| GLenum dfactorRGB, GLenum sfactorA, |
| GLenum dfactorA); |
| extern void GLAPIENTRY |
| _mesa_BlendFuncSeparateiARB(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB, |
| GLenum sfactorA, GLenum dfactorA); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_BlendEquation( GLenum mode ); |
| |
| |
| void GLAPIENTRY |
| _mesa_BlendEquationiARB_no_error(GLuint buf, GLenum mode); |
| |
| extern void GLAPIENTRY |
| _mesa_BlendEquationiARB(GLuint buf, GLenum mode); |
| |
| |
| void GLAPIENTRY |
| _mesa_BlendEquationSeparate_no_error(GLenum modeRGB, GLenum modeA); |
| |
| extern void GLAPIENTRY |
| _mesa_BlendEquationSeparate( GLenum modeRGB, GLenum modeA ); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_BlendEquationSeparateiARB_no_error(GLuint buf, GLenum modeRGB, |
| GLenum modeA); |
| extern void GLAPIENTRY |
| _mesa_BlendEquationSeparateiARB(GLuint buf, GLenum modeRGB, GLenum modeA); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_BlendColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_AlphaFunc( GLenum func, GLclampf ref ); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_LogicOp( GLenum opcode ); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_LogicOp_no_error(GLenum opcode); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_IndexMask( GLuint mask ); |
| |
| extern void GLAPIENTRY |
| _mesa_ColorMask( GLboolean red, GLboolean green, |
| GLboolean blue, GLboolean alpha ); |
| |
| extern void GLAPIENTRY |
| _mesa_ColorMaski( GLuint buf, GLboolean red, GLboolean green, |
| GLboolean blue, GLboolean alpha ); |
| |
| |
| extern void GLAPIENTRY |
| _mesa_ClampColor(GLenum target, GLenum clamp); |
| |
| extern GLboolean |
| _mesa_get_clamp_fragment_color(const struct gl_context *ctx, |
| const struct gl_framebuffer *drawFb); |
| |
| extern GLboolean |
| _mesa_get_clamp_vertex_color(const struct gl_context *ctx, |
| const struct gl_framebuffer *drawFb); |
| |
| extern GLboolean |
| _mesa_get_clamp_read_color(const struct gl_context *ctx, |
| const struct gl_framebuffer *readFb); |
| |
| extern void |
| _mesa_update_clamp_fragment_color(struct gl_context *ctx, |
| const struct gl_framebuffer *drawFb); |
| |
| extern void |
| _mesa_update_clamp_vertex_color(struct gl_context *ctx, |
| const struct gl_framebuffer *drawFb); |
| |
| extern mesa_format |
| _mesa_get_render_format(const struct gl_context *ctx, mesa_format format); |
| |
| extern void |
| _mesa_init_color( struct gl_context * ctx ); |
| |
| |
| static inline enum gl_advanced_blend_mode |
| _mesa_get_advanced_blend_sh_constant(GLbitfield blend_enabled, |
| enum gl_advanced_blend_mode mode) |
| { |
| return blend_enabled ? mode : BLEND_NONE; |
| } |
| |
| static inline bool |
| _mesa_advanded_blend_sh_constant_changed(struct gl_context *ctx, |
| GLbitfield new_blend_enabled, |
| enum gl_advanced_blend_mode new_mode) |
| { |
| return _mesa_get_advanced_blend_sh_constant(new_blend_enabled, new_mode) != |
| _mesa_get_advanced_blend_sh_constant(ctx->Color.BlendEnabled, |
| ctx->Color._AdvancedBlendMode); |
| } |
| |
| static inline void |
| _mesa_flush_vertices_for_blend_state(struct gl_context *ctx) |
| { |
| if (!ctx->DriverFlags.NewBlend) { |
| FLUSH_VERTICES(ctx, _NEW_COLOR); |
| } else { |
| FLUSH_VERTICES(ctx, 0); |
| ctx->NewDriverState |= ctx->DriverFlags.NewBlend; |
| } |
| } |
| |
| static inline void |
| _mesa_flush_vertices_for_blend_adv(struct gl_context *ctx, |
| GLbitfield new_blend_enabled, |
| enum gl_advanced_blend_mode new_mode) |
| { |
| /* The advanced blend mode needs _NEW_COLOR to update the state constant. */ |
| if (_mesa_has_KHR_blend_equation_advanced(ctx) && |
| _mesa_advanded_blend_sh_constant_changed(ctx, new_blend_enabled, |
| new_mode)) { |
| FLUSH_VERTICES(ctx, _NEW_COLOR); |
| ctx->NewDriverState |= ctx->DriverFlags.NewBlend; |
| return; |
| } |
| _mesa_flush_vertices_for_blend_state(ctx); |
| } |
| |
| static inline GLbitfield |
| _mesa_replicate_colormask(GLbitfield mask0, unsigned num_buffers) |
| { |
| GLbitfield mask = mask0; |
| |
| for (unsigned i = 1; i < num_buffers; i++) |
| mask |= mask0 << (i * 4); |
| return mask; |
| } |
| |
| #endif |