/**
* Set the separate blend source/dest factors for all draw buffers.
*
* \param sfactorRGB RGB source factor operator.
* \param dfactorRGB RGB destination factor operator.
* \param sfactorA alpha source factor operator.
* \param dfactorA alpha destination factor operator.
*/
void GLAPIENTRY
_mesa_BlendFuncSeparate( GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA )
{
GET_CURRENT_CONTEXT(ctx);
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glBlendFuncSeparate %s %s %s %s\n",
_mesa_enum_to_string(sfactorRGB),
_mesa_enum_to_string(dfactorRGB),
_mesa_enum_to_string(sfactorA),
_mesa_enum_to_string(dfactorA));
if (skip_blend_state_update(ctx, sfactorRGB, dfactorRGB, sfactorA, dfactorA))
return;
if (!validate_blend_factors(ctx, "glBlendFuncSeparate",
sfactorRGB, dfactorRGB,
sfactorA, dfactorA)) {
return;
}
blend_func_separate(ctx, sfactorRGB, dfactorRGB, sfactorA, dfactorA);
}
/**
* Set the separate blend source/dest factors for all draw buffers.
*
* \param sfactorRGB RGB source factor operator.
* \param dfactorRGB RGB destination factor operator.
* \param sfactorA alpha source factor operator.
* \param dfactorA alpha destination factor operator.
*/
void GLAPIENTRY
_mesa_BlendFuncSeparate( GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA )
{
GLuint buf, numBuffers;
GLboolean changed;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (MESA_VERBOSE & VERBOSE_API)
_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));
if (!validate_blend_factors(ctx, "glBlendFuncSeparate",
sfactorRGB, dfactorRGB,
sfactorA, dfactorA)) {
return;
}
numBuffers = ctx->Extensions.ARB_draw_buffers_blend
? ctx->Const.MaxDrawBuffers : 1;
changed = GL_FALSE;
for (buf = 0; buf < numBuffers; buf++) {
if (ctx->Color.Blend[buf].SrcRGB != sfactorRGB ||
ctx->Color.Blend[buf].DstRGB != dfactorRGB ||
ctx->Color.Blend[buf].SrcA != sfactorA ||
ctx->Color.Blend[buf].DstA != dfactorA) {
changed = GL_TRUE;
break;
}
}
if (!changed)
return;
FLUSH_VERTICES(ctx, _NEW_COLOR);
for (buf = 0; buf < numBuffers; buf++) {
ctx->Color.Blend[buf].SrcRGB = sfactorRGB;
ctx->Color.Blend[buf].DstRGB = dfactorRGB;
ctx->Color.Blend[buf].SrcA = sfactorA;
ctx->Color.Blend[buf].DstA = dfactorA;
update_uses_dual_src(ctx, buf);
}
ctx->Color._BlendFuncPerBuffer = GL_FALSE;
if (ctx->Driver.BlendFuncSeparate) {
ctx->Driver.BlendFuncSeparate(ctx, sfactorRGB, dfactorRGB,
sfactorA, dfactorA);
}
}
/**
* Specify the blending operation.
*
* \param sfactor source factor operator.
* \param dfactor destination factor operator.
*
* \sa glBlendFunc, glBlendFuncSeparateEXT
*/
void GLAPIENTRY
_mesa_BlendFunc( GLenum sfactor, GLenum dfactor )
{
GET_CURRENT_CONTEXT(ctx);
if (skip_blend_state_update(ctx, sfactor, dfactor, sfactor, dfactor))
return;
if (!validate_blend_factors(ctx, "glBlendFunc",
sfactor, dfactor, sfactor, dfactor)) {
return;
}
blend_func_separate(ctx, sfactor, dfactor, sfactor, dfactor);
}
/**
* Set separate blend source/dest factors for one color buffer/target.
*/
void GLAPIENTRY
_mesa_BlendFuncSeparateiARB(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA)
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (!ctx->Extensions.ARB_draw_buffers_blend) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glBlendFunc[Separate]i()");
return;
}
if (buf >= ctx->Const.MaxDrawBuffers) {
_mesa_error(ctx, GL_INVALID_VALUE, "glBlendFuncSeparatei(buffer=%u)",
buf);
return;
}
if (!validate_blend_factors(ctx, "glBlendFuncSeparatei",
sfactorRGB, dfactorRGB,
sfactorA, dfactorA)) {
return;
}
if (ctx->Color.Blend[buf].SrcRGB == sfactorRGB &&
ctx->Color.Blend[buf].DstRGB == dfactorRGB &&
ctx->Color.Blend[buf].SrcA == sfactorA &&
ctx->Color.Blend[buf].DstA == dfactorA)
return; /* no change */
FLUSH_VERTICES(ctx, _NEW_COLOR);
ctx->Color.Blend[buf].SrcRGB = sfactorRGB;
ctx->Color.Blend[buf].DstRGB = dfactorRGB;
ctx->Color.Blend[buf].SrcA = sfactorA;
ctx->Color.Blend[buf].DstA = dfactorA;
update_uses_dual_src(ctx, buf);
ctx->Color._BlendFuncPerBuffer = GL_TRUE;
if (ctx->Driver.BlendFuncSeparatei) {
ctx->Driver.BlendFuncSeparatei(ctx, buf, sfactorRGB, dfactorRGB,
sfactorA, dfactorA);
}
}
static ALWAYS_INLINE void
blend_func_separatei(GLuint buf, GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA, bool no_error)
{
GET_CURRENT_CONTEXT(ctx);
if (!no_error) {
if (!ctx->Extensions.ARB_draw_buffers_blend) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glBlendFunc[Separate]i()");
return;
}
if (buf >= ctx->Const.MaxDrawBuffers) {
_mesa_error(ctx, GL_INVALID_VALUE, "glBlendFuncSeparatei(buffer=%u)",
buf);
return;
}
}
if (ctx->Color.Blend[buf].SrcRGB == sfactorRGB &&
ctx->Color.Blend[buf].DstRGB == dfactorRGB &&
ctx->Color.Blend[buf].SrcA == sfactorA &&
ctx->Color.Blend[buf].DstA == dfactorA)
return; /* no change */
if (!no_error && !validate_blend_factors(ctx, "glBlendFuncSeparatei",
sfactorRGB, dfactorRGB,
sfactorA, dfactorA)) {
return;
}
FLUSH_VERTICES(ctx, ctx->DriverFlags.NewBlend ? 0 : _NEW_COLOR);
ctx->NewDriverState |= ctx->DriverFlags.NewBlend;
ctx->Color.Blend[buf].SrcRGB = sfactorRGB;
ctx->Color.Blend[buf].DstRGB = dfactorRGB;
ctx->Color.Blend[buf].SrcA = sfactorA;
ctx->Color.Blend[buf].DstA = dfactorA;
update_uses_dual_src(ctx, buf);
ctx->Color._BlendFuncPerBuffer = GL_TRUE;
}
/**
* Set the separate blend source/dest factors for all draw buffers.
*
* \param sfactorRGB RGB source factor operator.
* \param dfactorRGB RGB destination factor operator.
* \param sfactorA alpha source factor operator.
* \param dfactorA alpha destination factor operator.
*/
void GLAPIENTRY
_mesa_BlendFuncSeparate( GLenum sfactorRGB, GLenum dfactorRGB,
GLenum sfactorA, GLenum dfactorA )
{
GET_CURRENT_CONTEXT(ctx);
const unsigned numBuffers = num_buffers(ctx);
unsigned buf;
bool changed = false;
if (MESA_VERBOSE & VERBOSE_API)
_mesa_debug(ctx, "glBlendFuncSeparate %s %s %s %s\n",
_mesa_enum_to_string(sfactorRGB),
_mesa_enum_to_string(dfactorRGB),
_mesa_enum_to_string(sfactorA),
_mesa_enum_to_string(dfactorA));
/* Check if we're really changing any state. If not, return early. */
if (ctx->Color._BlendFuncPerBuffer) {
/* Check all per-buffer states */
for (buf = 0; buf < numBuffers; buf++) {
if (ctx->Color.Blend[buf].SrcRGB != sfactorRGB ||
ctx->Color.Blend[buf].DstRGB != dfactorRGB ||
ctx->Color.Blend[buf].SrcA != sfactorA ||
ctx->Color.Blend[buf].DstA != dfactorA) {
changed = true;
break;
}
}
}
else {
/* only need to check 0th per-buffer state */
if (ctx->Color.Blend[0].SrcRGB != sfactorRGB ||
ctx->Color.Blend[0].DstRGB != dfactorRGB ||
ctx->Color.Blend[0].SrcA != sfactorA ||
ctx->Color.Blend[0].DstA != dfactorA) {
changed = true;
}
}
if (!changed)
return;
if (!validate_blend_factors(ctx, "glBlendFuncSeparate",
sfactorRGB, dfactorRGB,
sfactorA, dfactorA)) {
return;
}
FLUSH_VERTICES(ctx, _NEW_COLOR);
for (buf = 0; buf < numBuffers; buf++) {
ctx->Color.Blend[buf].SrcRGB = sfactorRGB;
ctx->Color.Blend[buf].DstRGB = dfactorRGB;
ctx->Color.Blend[buf].SrcA = sfactorA;
ctx->Color.Blend[buf].DstA = dfactorA;
}
update_uses_dual_src(ctx, 0);
for (buf = 1; buf < numBuffers; buf++) {
ctx->Color.Blend[buf]._UsesDualSrc = ctx->Color.Blend[0]._UsesDualSrc;
}
ctx->Color._BlendFuncPerBuffer = GL_FALSE;
if (ctx->Driver.BlendFuncSeparate) {
ctx->Driver.BlendFuncSeparate(ctx, sfactorRGB, dfactorRGB,
sfactorA, dfactorA);
}
}