From 3728673bd1b974e54858fbab6ff62d3607b0d3f0 Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Tue, 29 Dec 2009 15:04:03 -0700 Subject: mesa: per-buffer blend enabled flags ctx->Color.BlendEnabled is now a GLbitfield instead of a GLboolean to indicate blend on/off status for each color/draw buffer. This is infrastructure for GL_EXT_draw_buffers2 and OpenGL 3.x New functions include _mesa_EnableIndexed(), _mesa_DisableIndexed(), and _mesa_IsEnabledIndexed(). The enable function corresponds to glEnableIndexedEXT() for GL_EXT_draw_buffers2 or glEnablei() for GL3. Note that there's quite a few tests for ctx->Color.BlendEnabled != 0 in drivers, etc. Those tests can remain as-is since the mask will be 0 or ~0 unless GL_EXT_draw_buffers2 is enabled. --- src/mesa/drivers/common/meta.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) (limited to 'src/mesa/drivers/common/meta.c') diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c index cd9075b393..da2c06677a 100644 --- a/src/mesa/drivers/common/meta.c +++ b/src/mesa/drivers/common/meta.c @@ -107,7 +107,7 @@ struct save_state GLboolean AlphaEnabled; /** META_BLEND */ - GLboolean BlendEnabled; + GLbitfield BlendEnabled; GLboolean ColorLogicOpEnabled; /** META_COLOR_MASK */ @@ -335,8 +335,12 @@ _mesa_meta_begin(GLcontext *ctx, GLbitfield state) if (state & META_BLEND) { save->BlendEnabled = ctx->Color.BlendEnabled; - if (ctx->Color.BlendEnabled) - _mesa_set_enable(ctx, GL_BLEND, GL_FALSE); + if (ctx->Color.BlendEnabled) { + GLuint i; + for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { + _mesa_set_enablei(ctx, GL_BLEND, i, GL_FALSE); + } + } save->ColorLogicOpEnabled = ctx->Color.ColorLogicOpEnabled; if (ctx->Color.ColorLogicOpEnabled) _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, GL_FALSE); @@ -566,8 +570,12 @@ _mesa_meta_end(GLcontext *ctx) } if (state & META_BLEND) { - if (ctx->Color.BlendEnabled != save->BlendEnabled) - _mesa_set_enable(ctx, GL_BLEND, save->BlendEnabled); + if (ctx->Color.BlendEnabled != save->BlendEnabled) { + GLuint i; + for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) { + _mesa_set_enablei(ctx, GL_BLEND, i, (save->BlendEnabled >> i) & 1); + } + } if (ctx->Color.ColorLogicOpEnabled != save->ColorLogicOpEnabled) _mesa_set_enable(ctx, GL_COLOR_LOGIC_OP, save->ColorLogicOpEnabled); } -- cgit v1.2.3