diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/main/blend.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/mesa/main/blend.c | 579 |
1 files changed, 0 insertions, 579 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/main/blend.c b/nx-X11/extras/Mesa/src/mesa/main/blend.c deleted file mode 100644 index 61b2b17c0..000000000 --- a/nx-X11/extras/Mesa/src/mesa/main/blend.c +++ /dev/null @@ -1,579 +0,0 @@ -/** - * \file blend.c - * Blending operations. - */ - -/* - * Mesa 3-D graphics library - * Version: 6.1 - * - * Copyright (C) 1999-2004 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 - * BRIAN PAUL 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. - */ - - - -#include "glheader.h" -#include "blend.h" -#include "colormac.h" -#include "context.h" -#include "enums.h" -#include "macros.h" -#include "mtypes.h" - - -/** - * Specify the blending operation. - * - * \param sfactor source factor operator. - * \param dfactor destination factor operator. - * - * \sa glBlendFunc, glBlendFuncSeparateEXT - * - * Swizzles the inputs and calls \c glBlendFuncSeparateEXT. This is done - * using the \c CurrentDispatch table in the context, so this same function - * can be used while compiling display lists. Therefore, there is no need - * for the display list code to save and restore this function. - */ -void GLAPIENTRY -_mesa_BlendFunc( GLenum sfactor, GLenum dfactor ) -{ - GET_CURRENT_CONTEXT(ctx); - - (*ctx->CurrentDispatch->BlendFuncSeparateEXT)( sfactor, dfactor, - sfactor, dfactor ); -} - - -/** - * Process GL_EXT_blend_func_separate(). - * - * \param sfactorRGB RGB source factor operator. - * \param dfactorRGB RGB destination factor operator. - * \param sfactorA alpha source factor operator. - * \param dfactorA alpha destination factor operator. - * - * Verifies the parameters and updates gl_colorbuffer_attrib. - * On a change, flush the vertices and notify the driver via - * dd_function_table::BlendFuncSeparate. - */ -void GLAPIENTRY -_mesa_BlendFuncSeparateEXT( GLenum sfactorRGB, GLenum dfactorRGB, - GLenum sfactorA, GLenum dfactorA ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) - _mesa_debug(ctx, "glBlendFuncSeparate %s %s %s %s\n", - _mesa_lookup_enum_by_nr(sfactorRGB), - _mesa_lookup_enum_by_nr(dfactorRGB), - _mesa_lookup_enum_by_nr(sfactorA), - _mesa_lookup_enum_by_nr(dfactorA)); - - switch (sfactorRGB) { - case GL_SRC_COLOR: - case GL_ONE_MINUS_SRC_COLOR: - if (!ctx->Extensions.NV_blend_square) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (sfactorRGB)"); - return; - } - /* fall-through */ - case GL_ZERO: - case GL_ONE: - case GL_DST_COLOR: - case GL_ONE_MINUS_DST_COLOR: - case GL_SRC_ALPHA: - case GL_ONE_MINUS_SRC_ALPHA: - case GL_DST_ALPHA: - case GL_ONE_MINUS_DST_ALPHA: - case GL_SRC_ALPHA_SATURATE: - case GL_CONSTANT_COLOR: - case GL_ONE_MINUS_CONSTANT_COLOR: - case GL_CONSTANT_ALPHA: - case GL_ONE_MINUS_CONSTANT_ALPHA: - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (sfactorRGB)"); - return; - } - - switch (dfactorRGB) { - case GL_DST_COLOR: - case GL_ONE_MINUS_DST_COLOR: - if (!ctx->Extensions.NV_blend_square) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (dfactorRGB)"); - return; - } - /* fall-through */ - case GL_ZERO: - case GL_ONE: - case GL_SRC_COLOR: - case GL_ONE_MINUS_SRC_COLOR: - case GL_SRC_ALPHA: - case GL_ONE_MINUS_SRC_ALPHA: - case GL_DST_ALPHA: - case GL_ONE_MINUS_DST_ALPHA: - case GL_CONSTANT_COLOR: - case GL_ONE_MINUS_CONSTANT_COLOR: - case GL_CONSTANT_ALPHA: - case GL_ONE_MINUS_CONSTANT_ALPHA: - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (dfactorRGB)"); - return; - } - - switch (sfactorA) { - case GL_SRC_COLOR: - case GL_ONE_MINUS_SRC_COLOR: - if (!ctx->Extensions.NV_blend_square) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (sfactorA)"); - return; - } - /* fall-through */ - case GL_ZERO: - case GL_ONE: - case GL_DST_COLOR: - case GL_ONE_MINUS_DST_COLOR: - case GL_SRC_ALPHA: - case GL_ONE_MINUS_SRC_ALPHA: - case GL_DST_ALPHA: - case GL_ONE_MINUS_DST_ALPHA: - case GL_SRC_ALPHA_SATURATE: - case GL_CONSTANT_COLOR: - case GL_ONE_MINUS_CONSTANT_COLOR: - case GL_CONSTANT_ALPHA: - case GL_ONE_MINUS_CONSTANT_ALPHA: - break; - default: - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (sfactorA)"); - return; - } - - switch (dfactorA) { - case GL_DST_COLOR: - case GL_ONE_MINUS_DST_COLOR: - if (!ctx->Extensions.NV_blend_square) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (dfactorA)"); - return; - } - /* fall-through */ - case GL_ZERO: - case GL_ONE: - case GL_SRC_COLOR: - case GL_ONE_MINUS_SRC_COLOR: - case GL_SRC_ALPHA: - case GL_ONE_MINUS_SRC_ALPHA: - case GL_DST_ALPHA: - case GL_ONE_MINUS_DST_ALPHA: - case GL_CONSTANT_COLOR: - case GL_ONE_MINUS_CONSTANT_COLOR: - case GL_CONSTANT_ALPHA: - case GL_ONE_MINUS_CONSTANT_ALPHA: - break; - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glBlendFunc or glBlendFuncSeparate (dfactorA)" ); - return; - } - - if (ctx->Color.BlendSrcRGB == sfactorRGB && - ctx->Color.BlendDstRGB == dfactorRGB && - ctx->Color.BlendSrcA == sfactorA && - ctx->Color.BlendDstA == dfactorA) - return; - - FLUSH_VERTICES(ctx, _NEW_COLOR); - - ctx->Color.BlendSrcRGB = sfactorRGB; - ctx->Color.BlendDstRGB = dfactorRGB; - ctx->Color.BlendSrcA = sfactorA; - ctx->Color.BlendDstA = dfactorA; - - if (ctx->Driver.BlendFuncSeparate) { - (*ctx->Driver.BlendFuncSeparate)( ctx, sfactorRGB, dfactorRGB, - sfactorA, dfactorA ); - } -} - - -#if _HAVE_FULL_GL - -static GLboolean -_mesa_validate_blend_equation( GLcontext *ctx, - GLenum mode, GLboolean is_separate ) -{ - switch (mode) { - case GL_FUNC_ADD: - break; - case GL_MIN: - case GL_MAX: - if (!ctx->Extensions.EXT_blend_minmax && - !ctx->Extensions.ARB_imaging) { - return GL_FALSE; - } - break; - /* glBlendEquationSeparate cannot take GL_LOGIC_OP as a parameter. - */ - case GL_LOGIC_OP: - if (!ctx->Extensions.EXT_blend_logic_op || is_separate) { - return GL_FALSE; - } - break; - case GL_FUNC_SUBTRACT: - case GL_FUNC_REVERSE_SUBTRACT: - if (!ctx->Extensions.EXT_blend_subtract && - !ctx->Extensions.ARB_imaging) { - return GL_FALSE; - } - break; - default: - return GL_FALSE; - } - - return GL_TRUE; -} - - -/* This is really an extension function! */ -void GLAPIENTRY -_mesa_BlendEquation( GLenum mode ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) - _mesa_debug(ctx, "glBlendEquation %s\n", - _mesa_lookup_enum_by_nr(mode)); - - if ( ! _mesa_validate_blend_equation( ctx, mode, GL_FALSE ) ) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquation"); - return; - } - - if ( (ctx->Color.BlendEquationRGB == mode) && - (ctx->Color.BlendEquationA == mode) ) - return; - - FLUSH_VERTICES(ctx, _NEW_COLOR); - ctx->Color.BlendEquationRGB = mode; - ctx->Color.BlendEquationA = mode; - - /* This is needed to support 1.1's RGB logic ops AND - * 1.0's blending logicops. - */ - ctx->Color._LogicOpEnabled = (ctx->Color.ColorLogicOpEnabled || - (ctx->Color.BlendEnabled && - mode == GL_LOGIC_OP)); - - if (ctx->Driver.BlendEquationSeparate) - (*ctx->Driver.BlendEquationSeparate)( ctx, mode, mode ); -} - - -void GLAPIENTRY -_mesa_BlendEquationSeparateEXT( GLenum modeRGB, GLenum modeA ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE & (VERBOSE_API|VERBOSE_TEXTURE)) - _mesa_debug(ctx, "glBlendEquationSeparateEXT %s %s\n", - _mesa_lookup_enum_by_nr(modeRGB), - _mesa_lookup_enum_by_nr(modeA)); - - if ( (modeRGB != modeA) && !ctx->Extensions.EXT_blend_equation_separate ) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glBlendEquationSeparateEXT not supported by driver"); - return; - } - - if ( ! _mesa_validate_blend_equation( ctx, modeRGB, GL_TRUE ) ) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparateEXT(modeRGB)"); - return; - } - - if ( ! _mesa_validate_blend_equation( ctx, modeA, GL_TRUE ) ) { - _mesa_error(ctx, GL_INVALID_ENUM, "glBlendEquationSeparateEXT(modeA)"); - return; - } - - - if ( (ctx->Color.BlendEquationRGB == modeRGB) && - (ctx->Color.BlendEquationA == modeA) ) - return; - - FLUSH_VERTICES(ctx, _NEW_COLOR); - ctx->Color.BlendEquationRGB = modeRGB; - ctx->Color.BlendEquationA = modeA; - - /* This is needed to support 1.1's RGB logic ops AND - * 1.0's blending logicops. This test is simplified over glBlendEquation - * because modeRGB cannot be GL_LOGIC_OP. - */ - ctx->Color._LogicOpEnabled = (ctx->Color.ColorLogicOpEnabled); - - if (ctx->Driver.BlendEquationSeparate) - (*ctx->Driver.BlendEquationSeparate)( ctx, modeRGB, modeA ); -} -#endif - - -/** - * Set the blending color. - * - * \param red red color component. - * \param green green color component. - * \param blue blue color component. - * \param alpha alpha color component. - * - * \sa glBlendColor(). - * - * Clamps the parameters and updates gl_colorbuffer_attrib::BlendColor. On a - * change, flushes the vertices and notifies the driver via - * dd_function_table::BlendColor callback. - */ -void GLAPIENTRY -_mesa_BlendColor( GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha ) -{ - GLfloat tmp[4]; - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - tmp[0] = CLAMP( red, 0.0F, 1.0F ); - tmp[1] = CLAMP( green, 0.0F, 1.0F ); - tmp[2] = CLAMP( blue, 0.0F, 1.0F ); - tmp[3] = CLAMP( alpha, 0.0F, 1.0F ); - - if (TEST_EQ_4V(tmp, ctx->Color.BlendColor)) - return; - - FLUSH_VERTICES(ctx, _NEW_COLOR); - COPY_4FV( ctx->Color.BlendColor, tmp ); - - if (ctx->Driver.BlendColor) - (*ctx->Driver.BlendColor)(ctx, tmp); -} - - -/** - * Specify the alpha test function. - * - * \param func alpha comparison function. - * \param ref reference value. - * - * Verifies the parameters and updates gl_colorbuffer_attrib. - * On a change, flushes the vertices and notifies the driver via - * dd_function_table::AlphaFunc callback. - */ -void GLAPIENTRY -_mesa_AlphaFunc( GLenum func, GLclampf ref ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - switch (func) { - case GL_NEVER: - case GL_LESS: - case GL_EQUAL: - case GL_LEQUAL: - case GL_GREATER: - case GL_NOTEQUAL: - case GL_GEQUAL: - case GL_ALWAYS: - ref = CLAMP(ref, 0.0F, 1.0F); - - if (ctx->Color.AlphaFunc == func && ctx->Color.AlphaRef == ref) - return; /* no change */ - - FLUSH_VERTICES(ctx, _NEW_COLOR); - ctx->Color.AlphaFunc = func; - ctx->Color.AlphaRef = ref; - - if (ctx->Driver.AlphaFunc) - ctx->Driver.AlphaFunc(ctx, func, ref); - return; - - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glAlphaFunc(func)" ); - return; - } -} - - -/** - * Specify a logic pixel operation for color index rendering. - * - * \param opcode operation. - * - * Verifies that \p opcode is a valid enum and updates -gl_colorbuffer_attrib::LogicOp. - * On a change, flushes the vertices and notifies the driver via the - * dd_function_table::LogicOpcode callback. - */ -void GLAPIENTRY -_mesa_LogicOp( GLenum opcode ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - switch (opcode) { - case GL_CLEAR: - case GL_SET: - case GL_COPY: - case GL_COPY_INVERTED: - case GL_NOOP: - case GL_INVERT: - case GL_AND: - case GL_NAND: - case GL_OR: - case GL_NOR: - case GL_XOR: - case GL_EQUIV: - case GL_AND_REVERSE: - case GL_AND_INVERTED: - case GL_OR_REVERSE: - case GL_OR_INVERTED: - break; - default: - _mesa_error( ctx, GL_INVALID_ENUM, "glLogicOp" ); - return; - } - - if (ctx->Color.LogicOp == opcode) - return; - - FLUSH_VERTICES(ctx, _NEW_COLOR); - ctx->Color.LogicOp = opcode; - - if (ctx->Driver.LogicOpcode) - ctx->Driver.LogicOpcode( ctx, opcode ); -} - -#if _HAVE_FULL_GL -void GLAPIENTRY -_mesa_IndexMask( GLuint mask ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (ctx->Color.IndexMask == mask) - return; - - FLUSH_VERTICES(ctx, _NEW_COLOR); - ctx->Color.IndexMask = mask; - - if (ctx->Driver.IndexMask) - ctx->Driver.IndexMask( ctx, mask ); -} -#endif - - -/** - * Enable or disable writing of frame buffer color components. - * - * \param red whether to mask writing of the red color component. - * \param green whether to mask writing of the green color component. - * \param blue whether to mask writing of the blue color component. - * \param alpha whether to mask writing of the alpha color component. - * - * \sa glColorMask(). - * - * Sets the appropriate value of gl_colorbuffer_attrib::ColorMask. On a - * change, flushes the vertices and notifies the driver via the - * dd_function_table::ColorMask callback. - */ -void GLAPIENTRY -_mesa_ColorMask( GLboolean red, GLboolean green, - GLboolean blue, GLboolean alpha ) -{ - GET_CURRENT_CONTEXT(ctx); - GLubyte tmp[4]; - ASSERT_OUTSIDE_BEGIN_END(ctx); - - if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glColorMask %d %d %d %d\n", red, green, blue, alpha); - - /* Shouldn't have any information about channel depth in core mesa - * -- should probably store these as the native booleans: - */ - tmp[RCOMP] = red ? 0xff : 0x0; - tmp[GCOMP] = green ? 0xff : 0x0; - tmp[BCOMP] = blue ? 0xff : 0x0; - tmp[ACOMP] = alpha ? 0xff : 0x0; - - if (TEST_EQ_4UBV(tmp, ctx->Color.ColorMask)) - return; - - FLUSH_VERTICES(ctx, _NEW_COLOR); - COPY_4UBV(ctx->Color.ColorMask, tmp); - - if (ctx->Driver.ColorMask) - ctx->Driver.ColorMask( ctx, red, green, blue, alpha ); -} - - -/**********************************************************************/ -/** \name Initialization */ -/*@{*/ - -/** - * Initialization of the context's Color attribute group. - * - * \param ctx GL context. - * - * Initializes the related fields in the context color attribute group, - * __GLcontextRec::Color. - */ -void _mesa_init_color( GLcontext * ctx ) -{ - /* Color buffer group */ - ctx->Color.IndexMask = ~0u; - ctx->Color.ColorMask[0] = 0xff; - ctx->Color.ColorMask[1] = 0xff; - ctx->Color.ColorMask[2] = 0xff; - ctx->Color.ColorMask[3] = 0xff; - ctx->Color.ClearIndex = 0; - ASSIGN_4V( ctx->Color.ClearColor, 0, 0, 0, 0 ); - ctx->Color.AlphaEnabled = GL_FALSE; - ctx->Color.AlphaFunc = GL_ALWAYS; - ctx->Color.AlphaRef = 0; - ctx->Color.BlendEnabled = GL_FALSE; - ctx->Color.BlendSrcRGB = GL_ONE; - ctx->Color.BlendDstRGB = GL_ZERO; - ctx->Color.BlendSrcA = GL_ONE; - ctx->Color.BlendDstA = GL_ZERO; - ctx->Color.BlendEquationRGB = GL_FUNC_ADD; - ctx->Color.BlendEquationA = GL_FUNC_ADD; - ASSIGN_4V( ctx->Color.BlendColor, 0.0, 0.0, 0.0, 0.0 ); - ctx->Color.IndexLogicOpEnabled = GL_FALSE; - ctx->Color.ColorLogicOpEnabled = GL_FALSE; - ctx->Color._LogicOpEnabled = GL_FALSE; - ctx->Color.LogicOp = GL_COPY; - ctx->Color.DitherFlag = GL_TRUE; - - if (ctx->Visual.doubleBufferMode) { - ctx->Color.DrawBuffer[0] = GL_BACK; - } - else { - ctx->Color.DrawBuffer[0] = GL_FRONT; - } -} - -/*@}*/ |