/*
* State functions
*/
+ void (*set_alpha_test_state)( struct pipe_context *,
+ const struct pipe_alpha_test_state * );
+
void (*set_blend_state)( struct pipe_context *,
const struct pipe_blend_state * );
- void (*set_framebuffer_state)( struct pipe_context *,
- const struct pipe_framebuffer_state * );
-
void (*set_cbuf_state)( struct pipe_context *,
const struct pipe_surface * );
void (*set_depth_state)( struct pipe_context *,
const struct pipe_depth_state * );
+ void (*set_framebuffer_state)( struct pipe_context *,
+ const struct pipe_framebuffer_state * );
+
void (*set_fs_state)( struct pipe_context *,
const struct pipe_fs_state * );
{
GLuint enabled:1; /**< depth test enabled? */
GLuint writemask:1; /**< allow depth buffer writes? */
- GLuint func:3; /**< depth test func */
+ GLuint func:3; /**< depth test func (PIPE_FUNC_x) */
GLfloat clear; /**< Clear value in [0,1] (XXX correct place?) */
};
+struct pipe_alpha_test_state {
+ GLuint enable:1;
+ GLuint func:3; /**< PIPE_FUNC_x */
+ GLfloat ref; /**< reference value */
+};
-struct pipe_blend_state {
- GLuint blend_enable:1;
+struct pipe_blend_state {
+ GLuint blend_enable:1;
- GLuint rgb_func:3;
- GLuint rgb_src_factor:5;
- GLuint rgb_dst_factor:5;
+ GLuint rgb_func:3;
+ GLuint rgb_src_factor:5;
+ GLuint rgb_dst_factor:5;
GLuint alpha_func:3;
GLuint alpha_src_factor:5;
GLuint alpha_dst_factor:5;
- GLuint logicop_enable:1;
+ GLuint logicop_enable:1;
GLuint logicop_func:4;
};
struct pipe_blend_color {
- GLfloat color[4];
+ GLfloat color[4];
};
struct pipe_stencil_state {
GLuint front_enabled:1;
- GLuint front_func:3; /**< PIPE_STENCIL_FUNC_x */
+ GLuint front_func:3; /**< PIPE_FUNC_x */
GLuint front_fail_op:3; /**< PIPE_STENCIL_OP_x */
GLuint front_zpass_op:3; /**< PIPE_STENCIL_OP_x */
GLuint front_zfail_op:3; /**< PIPE_STENCIL_OP_x */
GLfloat max_anisotropy;
GLuint compare:1; /**< shadow/depth compare enabled? */
GLenum compare_mode:1; /**< PIPE_TEX_COMPARE_x */
- GLenum compare_func:3; /**< PIPE_DEPTH_FUNC_x */
+ GLenum compare_func:3; /**< PIPE_FUNC_x */
GLfloat shadow_ambient; /**< shadow test fail color/intensity */
};
#define G_NEW_SCISSOR 0x40
#define G_NEW_STIPPLE 0x80
#define G_NEW_FRAMEBUFFER 0x100
+#define G_NEW_ALPHA_TEST 0x200
struct softpipe_context {
struct pipe_setup_state setup;
struct pipe_fs_state fs;
struct pipe_blend_state blend;
+ struct pipe_alpha_test_state alpha_test;
struct pipe_surface cbuf;
struct pipe_clip_state clip;
struct pipe_scissor_rect scissor;
STATETRACKER_SOURCES = \
state_tracker/st_atom.c \
+ state_tracker/st_atom_alphatest.c \
state_tracker/st_atom_blend.c \
state_tracker/st_atom_cbuf.c \
state_tracker/st_atom_clip.c \
drivers/x11/xm_glide.c \
drivers/x11/xm_line.c \
drivers/x11/xm_span.c \
+ drivers/x11/xm_surface.c \
drivers/x11/xm_tri.c
OSMESA_DRIVER_SOURCES = \
--- /dev/null
+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+ /*
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ * Brian Paul
+ */
+
+
+#include "st_context.h"
+#include "st_atom.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+
+
+/**
+ * Convert GLenum stencil func tokens to pipe tokens.
+ */
+static GLuint
+gl_alpha_func_to_sp(GLenum func)
+{
+ /* Same values, just biased */
+ assert(PIPE_FUNC_NEVER == GL_NEVER - GL_NEVER);
+ assert(PIPE_FUNC_LESS == GL_LESS - GL_NEVER);
+ assert(PIPE_FUNC_EQUAL == GL_EQUAL - GL_NEVER);
+ assert(PIPE_FUNC_LEQUAL == GL_LEQUAL - GL_NEVER);
+ assert(PIPE_FUNC_GREATER == GL_GREATER - GL_NEVER);
+ assert(PIPE_FUNC_NOTEQUAL == GL_NOTEQUAL - GL_NEVER);
+ assert(PIPE_FUNC_GEQUAL == GL_GEQUAL - GL_NEVER);
+ assert(PIPE_FUNC_ALWAYS == GL_ALWAYS - GL_NEVER);
+ assert(func >= GL_NEVER);
+ assert(func <= GL_ALWAYS);
+ return func - GL_NEVER;
+}
+
+
+static void
+update_alpha_test( struct st_context *st )
+{
+ struct pipe_alpha_test_state alpha;
+
+ memset(&alpha, 0, sizeof(alpha));
+
+ if (st->ctx->Color.AlphaEnabled) {
+ alpha.enable = 1;
+ alpha.func = gl_alpha_func_to_sp(st->ctx->Color.AlphaFunc);
+ alpha.ref = st->ctx->Color.AlphaRef;
+ }
+
+ if (memcmp(&alpha, &st->state.alpha_test, sizeof(alpha)) != 0) {
+ /* state has changed */
+ st->state.alpha_test = alpha; /* struct copy */
+ st->pipe->set_alpha_test_state(st->pipe, &alpha); /* set new state */
+ }
+}
+
+
+const struct st_tracked_state st_update_alpha_test = {
+ .dirty = {
+ .mesa = (_NEW_COLOR),
+ .st = 0,
+ },
+ .update = update_alpha_test
+};
+
+
+
+
+
struct pipe_viewport viewport;
struct pipe_setup_state setup;
struct pipe_fs_state fs;
+ struct pipe_alpha_test_state alpha_test;
struct pipe_blend_state blend;
struct pipe_surface cbuf;
struct pipe_clip_state clip;
projects / mesa.git / commitdiff