#include "glheader.h"
#include "blend.h"
#include "colormac.h"
#include "context.h"
#include "enums.h"
#include "macros.h"
#include "mtypes.h"
void GLAPIENTRY
_mesa_BlendFunc( GLenum sfactor, GLenum dfactor )
{
GET_CURRENT_CONTEXT(ctx);
(*ctx->CurrentDispatch->BlendFuncSeparateEXT)( sfactor, dfactor,
sfactor, dfactor );
}
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;
}
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;
}
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;
}
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;
}
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;
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;
}
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;
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;
if (ctx->Driver.BlendEquationSeparate)
(*ctx->Driver.BlendEquationSeparate)( ctx, modeRGB, modeA );
}
#endif
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);
}
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;
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;
}
}
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
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);
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 );
}
extern void GLAPIENTRY
_mesa_ClampColorARB(GLenum target, GLenum clamp)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (clamp != GL_TRUE && clamp != GL_FALSE && clamp != GL_FIXED_ONLY_ARB) {
_mesa_error(ctx, GL_INVALID_ENUM, "glClampColorARB(clamp)");
return;
}
switch (target) {
case GL_CLAMP_VERTEX_COLOR_ARB:
ctx->Light.ClampVertexColor = clamp;
break;
case GL_CLAMP_FRAGMENT_COLOR_ARB:
ctx->Color.ClampFragmentColor = clamp;
break;
case GL_CLAMP_READ_COLOR_ARB:
ctx->Color.ClampReadColor = clamp;
break;
default:
_mesa_error(ctx, GL_INVALID_ENUM, "glClampColorARB(target)");
return;
}
}
void _mesa_init_color( GLcontext * ctx )
{
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;
}
ctx->Color.ClampFragmentColor = GL_FIXED_ONLY_ARB;
ctx->Color.ClampReadColor = GL_FIXED_ONLY_ARB;
}