Add arbshader stage.

3 files changed, 167 insertions, 5 deletions

diff --git a/src/mesa/swrast/s_arbshader.c b/src/mesa/swrast/s_arbshader.c
new file mode 100644
index 00000000000..7cea59ee40a
--- /dev/null
+++ b/src/mesa/swrast/s_arbshader.c
@@ -0,0 +1,117 @@
+/*

+ * Mesa 3-D graphics library

+ * Version:  6.5

+ *

+ * Copyright (C) 2006  Brian Paul   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, sublicense,

+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL

+ * BRIAN PAUL 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:

+ *    Michal Krol

+ */

+

+#include "glheader.h"

+#include "context.h"

+#include "colormac.h"

+#include "s_arbshader.h"

+#include "s_context.h"

+#include "shaderobjects.h"

+

+int _slang_fetch_vec4_f (struct gl2_fragment_shader_intf **, const char *, GLfloat *,

+	GLuint, int);

+int _slang_fetch_discard (struct gl2_fragment_shader_intf **, GLboolean *);

+void exec_fragment_shader (struct gl2_fragment_shader_intf **);

+

+static void fetch_input_vec4 (const char *name, GLfloat *vec, GLuint index,

+	struct gl2_fragment_shader_intf **fs)

+{

+	_slang_fetch_vec4_f (fs, name, vec, index, 1);

+}

+

+static void fetch_output_vec4 (const char *name, GLfloat *vec, GLuint index,

+	struct gl2_fragment_shader_intf **fs)

+{

+	_slang_fetch_vec4_f (fs, name, vec, index, 0);

+}

+

+void _swrast_exec_arbshader (GLcontext *ctx, struct sw_span *span)

+{

+	struct gl2_program_intf **prog;

+	struct gl2_fragment_shader_intf **fs = NULL;

+	GLuint count, i;

+

+	prog = ctx->ShaderObjects.CurrentProgram;

+	count = (**prog)._container.GetAttachedCount ((struct gl2_container_intf **) prog);

+	for (i = 0; i < count; i++)

+	{

+		struct gl2_generic_intf **obj;

+		struct gl2_unknown_intf **unk;

+

+		obj = (**prog)._container.GetAttached ((struct gl2_container_intf **) prog, i);

+		unk = (**obj)._unknown.QueryInterface ((struct gl2_unknown_intf **) obj, UIID_FRAGMENT_SHADER);

+		(**obj)._unknown.Release ((struct gl2_unknown_intf **) obj);

+		if (unk != NULL)

+		{

+			fs = (struct gl2_fragment_shader_intf **) unk;

+			break;

+		}

+	}

+	if (fs == NULL)

+		return;

+

+	for (i = span->start; i < span->end; i++)

+	{

+		GLfloat vec[4];

+		GLuint j;

+		GLboolean kill;

+

+		vec[0] = (GLfloat) span->x + i;

+		vec[1] = (GLfloat) span->y;

+		vec[2] = (GLfloat) span->array->z[i] / ctx->DrawBuffer->_DepthMaxF;

+		vec[3] = span->w + span->dwdx * i;

+		fetch_input_vec4 ("gl_FragCoord", vec, 0, fs);

+		vec[0] = CHAN_TO_FLOAT(span->array->rgba[i][RCOMP]);

+		vec[1] = CHAN_TO_FLOAT(span->array->rgba[i][GCOMP]);

+		vec[2] = CHAN_TO_FLOAT(span->array->rgba[i][BCOMP]);

+		vec[3] = CHAN_TO_FLOAT(span->array->rgba[i][ACOMP]);

+		fetch_input_vec4 ("gl_Color", vec, 0, fs);

+		for (j = 0; j < ctx->Const.MaxTextureCoordUnits; j++)

+		{

+			vec[0] = span->array->texcoords[j][i][0];

+			vec[1] = span->array->texcoords[j][i][1];

+			vec[2] = span->array->texcoords[j][i][2];

+			vec[3] = span->array->texcoords[j][i][3];

+			fetch_input_vec4 ("gl_TexCoord", vec, j, fs);

+		}

+

+		exec_fragment_shader (fs);

+

+		_slang_fetch_discard (fs, &kill);

+		if (kill)

+		{

+			span->array->mask[i] = GL_FALSE;

+            span->writeAll = GL_FALSE;

+		}

+		fetch_output_vec4 ("gl_FragColor", vec, 0, fs);

+		UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][RCOMP], vec[0]);

+		UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][GCOMP], vec[1]);

+		UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][BCOMP], vec[2]);

+		UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][ACOMP], vec[3]);

+	}

+}

+

diff --git a/src/mesa/swrast/s_arbshader.h b/src/mesa/swrast/s_arbshader.h
new file mode 100644
index 00000000000..7a99ad725e4
--- /dev/null
+++ b/src/mesa/swrast/s_arbshader.h
@@ -0,0 +1,34 @@
+/*

+ * Mesa 3-D graphics library

+ * Version:  6.5

+ *

+ * Copyright (C) 2006  David Airlie   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, sublicense,

+ * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL

+ * DAVID AIRLIE 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.

+ */

+

+

+#ifndef S_ARBSHADER_H

+#define S_ARBSHADER_H

+

+#include "s_context.h"

+

+extern void _swrast_exec_arbshader (GLcontext *ctx, struct sw_span *span);

+

+#endif

+

diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index 681d4eba11c..91556cae5f3 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -2,7 +2,7 @@
  * Mesa 3-D graphics library
  * Version:  6.5
  *
- * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2006  Brian Paul   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"),
@@ -37,7 +37,8 @@
 #include "imports.h"
 
 #include "s_atifragshader.h"
-#include "s_alpha.h"
+#include "s_alpha.h"

+#include "s_arbshader.h"
 #include "s_blend.h"
 #include "s_context.h"
 #include "s_depth.h"
@@ -1154,8 +1155,13 @@ _swrast_write_rgba_span( GLcontext *ctx, struct sw_span *span)
       if (span->interpMask & SPAN_FOG)
          interpolate_fog(ctx, span);
 
-      /* Compute fragment colors with fragment program or texture lookups */
-      if (ctx->FragmentProgram._Active) {
+      /* Compute fragment colors with fragment program or texture lookups */

+      if (ctx->ShaderObjects.CurrentProgram != NULL) {

+         if (span->interpMask & SPAN_Z)

+            _swrast_span_interpolate_z (ctx, span);

+         _swrast_exec_arbshader (ctx, span);

+      }
+      else if (ctx->FragmentProgram._Active) {
          /* frag prog may need Z values */
          if (span->interpMask & SPAN_Z)
             _swrast_span_interpolate_z(ctx, span);
@@ -1232,7 +1238,12 @@ _swrast_write_rgba_span( GLcontext *ctx, struct sw_span *span)
       if (span->interpMask & SPAN_FOG)
          interpolate_fog(ctx, span);
 
-      if (ctx->FragmentProgram._Active)
+      if (ctx->ShaderObjects.CurrentProgram != NULL) {

+         if (span->interpMask & SPAN_Z)

+            _swrast_span_interpolate_z (ctx, span);

+         _swrast_exec_arbshader (ctx, span);

+      }

+      else if (ctx->FragmentProgram._Active)
          _swrast_exec_fragment_program( ctx, span );
       else if (ctx->ATIFragmentShader._Enabled)
          _swrast_exec_fragment_shader( ctx, span );