diff options
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_atom_constbuf.c')
| -rw-r--r-- | mesalib/src/mesa/state_tracker/st_atom_constbuf.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_atom_constbuf.c b/mesalib/src/mesa/state_tracker/st_atom_constbuf.c new file mode 100644 index 000000000..5672215f7 --- /dev/null +++ b/mesalib/src/mesa/state_tracker/st_atom_constbuf.c @@ -0,0 +1,171 @@ +/**************************************************************************
+ *
+ * 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 "main/imports.h"
+#include "program/prog_parameter.h"
+#include "program/prog_print.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+
+#include "st_debug.h"
+#include "st_context.h"
+#include "st_atom.h"
+#include "st_atom_constbuf.h"
+#include "st_program.h"
+
+
+/**
+ * Pass the given program parameters to the graphics pipe as a
+ * constant buffer.
+ * \param shader_type either PIPE_SHADER_VERTEX or PIPE_SHADER_FRAGMENT
+ */
+void st_upload_constants( struct st_context *st,
+ struct gl_program_parameter_list *params,
+ unsigned shader_type)
+{
+ struct pipe_context *pipe = st->pipe;
+ struct pipe_resource **cbuf = &st->state.constants[shader_type];
+
+ assert(shader_type == PIPE_SHADER_VERTEX ||
+ shader_type == PIPE_SHADER_FRAGMENT ||
+ shader_type == PIPE_SHADER_GEOMETRY);
+
+ /* update constants */
+ if (params && params->NumParameters) {
+ const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4;
+
+ /* Update the constants which come from fixed-function state, such as
+ * transformation matrices, fog factors, etc. The rest of the values in
+ * the parameters list are explicitly set by the user with glUniform,
+ * glProgramParameter(), etc.
+ */
+ _mesa_load_state_parameters(st->ctx, params);
+
+ /* We always need to get a new buffer, to keep the drivers simple and
+ * avoid gratuitous rendering synchronization.
+ */
+ pipe_resource_reference(cbuf, NULL );
+ *cbuf = pipe_buffer_create(pipe->screen,
+ PIPE_BIND_CONSTANT_BUFFER,
+ paramBytes );
+
+ if (ST_DEBUG & DEBUG_CONSTANTS) {
+ debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
+ __FUNCTION__, shader_type, params->NumParameters,
+ params->StateFlags);
+ _mesa_print_parameter_list(params);
+ }
+
+ /* load Mesa constants into the constant buffer */
+ pipe_buffer_write(st->pipe, *cbuf,
+ 0, paramBytes,
+ params->ParameterValues);
+
+ st->pipe->set_constant_buffer(st->pipe, shader_type, 0, *cbuf);
+ }
+ else if (*cbuf) {
+ st->constants.tracked_state[shader_type].dirty.mesa = 0x0;
+
+ pipe_resource_reference(cbuf, NULL);
+ st->pipe->set_constant_buffer(st->pipe, shader_type, 0, NULL);
+ }
+}
+
+
+/**
+ * Vertex shader:
+ */
+static void update_vs_constants(struct st_context *st )
+{
+ struct st_vertex_program *vp = st->vp;
+ struct gl_program_parameter_list *params = vp->Base.Base.Parameters;
+
+ st_upload_constants( st, params, PIPE_SHADER_VERTEX );
+}
+
+
+const struct st_tracked_state st_update_vs_constants = {
+ "st_update_vs_constants", /* name */
+ { /* dirty */
+ (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS), /* mesa */
+ ST_NEW_VERTEX_PROGRAM, /* st */
+ },
+ update_vs_constants /* update */
+};
+
+
+
+/**
+ * Fragment shader:
+ */
+static void update_fs_constants(struct st_context *st )
+{
+ struct st_fragment_program *fp = st->fp;
+ struct gl_program_parameter_list *params = fp->Base.Base.Parameters;
+
+ st_upload_constants( st, params, PIPE_SHADER_FRAGMENT );
+}
+
+
+const struct st_tracked_state st_update_fs_constants = {
+ "st_update_fs_constants", /* name */
+ { /* dirty */
+ (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS), /* mesa */
+ ST_NEW_FRAGMENT_PROGRAM, /* st */
+ },
+ update_fs_constants /* update */
+};
+
+/* Geometry shader:
+ */
+static void update_gs_constants(struct st_context *st )
+{
+ struct st_geometry_program *gp = st->gp;
+ struct gl_program_parameter_list *params;
+
+ if (gp) {
+ params = gp->Base.Base.Parameters;
+ st_upload_constants( st, params, PIPE_SHADER_GEOMETRY );
+ }
+}
+
+const struct st_tracked_state st_update_gs_constants = {
+ "st_update_gs_constants", /* name */
+ { /* dirty */
+ (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS), /* mesa */
+ ST_NEW_GEOMETRY_PROGRAM, /* st */
+ },
+ update_gs_constants /* update */
+};
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