r300: software fallbacking handling rewrite

Until now falling back to software rasterizer worked only for TCL enabled cards.
For non TCL cards we used to plug our rendering functions in r300InitSwtcl, and we had never restored original functions for software rasterizer.

1 files changed, 65 insertions, 28 deletions

diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c
index c0e3dbe994..397a26c3df 100644
--- a/src/mesa/drivers/dri/r300/r300_state.c
+++ b/src/mesa/drivers/dri/r300/r300_state.c
@@ -64,6 +64,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "r300_fragprog_common.h"
 #include "r300_fragprog.h"
 #include "r500_fragprog.h"
+#include "r300_render.h"
 
 #include "drirenderbuffer.h"
 
@@ -574,10 +575,26 @@ static void r300SetDepthState(GLcontext * ctx)
 	}
 }
 
+static void r300CatchStencilFallback(GLcontext *ctx)
+{
+	const unsigned back = ctx->Stencil._BackFace;
+
+	if (ctx->Stencil._Enabled && (ctx->Stencil.Ref[0] != ctx->Stencil.Ref[back]
+		|| ctx->Stencil.ValueMask[0] != ctx->Stencil.ValueMask[back]
+		|| ctx->Stencil.WriteMask[0] != ctx->Stencil.WriteMask[back])) {
+		r300SwitchFallback(ctx, R300_FALLBACK_STENCIL_TWOSIDE, GL_TRUE);
+	} else {
+		r300SwitchFallback(ctx, R300_FALLBACK_STENCIL_TWOSIDE, GL_FALSE);
+	}
+}
+
 static void r300SetStencilState(GLcontext * ctx, GLboolean state)
 {
 	r300ContextPtr r300 = R300_CONTEXT(ctx);
 	GLboolean hw_stencil = GL_FALSE;
+
+	r300CatchStencilFallback(ctx);
+
 	if (ctx->DrawBuffer) {
 		struct radeon_renderbuffer *rrbStencil
 			= radeon_get_renderbuffer(ctx->DrawBuffer, BUFFER_STENCIL);
@@ -593,10 +610,6 @@ static void r300SetStencilState(GLcontext * ctx, GLboolean state)
 			r300->hw.zs.cmd[R300_ZS_CNTL_0] &=
 			    ~R300_STENCIL_ENABLE;
 		}
-	} else {
-#if R200_MERGED
-		FALLBACK(&r300->radeon, RADEON_FALLBACK_STENCIL, state);
-#endif
 	}
 }
 
@@ -846,11 +859,14 @@ static void r300StencilFuncSeparate(GLcontext * ctx, GLenum face,
 				    GLenum func, GLint ref, GLuint mask)
 {
 	r300ContextPtr rmesa = R300_CONTEXT(ctx);
-	GLuint refmask =
-	    ((ctx->Stencil.Ref[0] & 0xff) << R300_STENCILREF_SHIFT)
-	     | ((ctx->Stencil.ValueMask[0] & 0xff) << R300_STENCILMASK_SHIFT);
-	const unsigned back = ctx->Stencil._BackFace;
+	GLuint refmask;
 	GLuint flag;
+	const unsigned back = ctx->Stencil._BackFace;
+
+	r300CatchStencilFallback(ctx);
+
+	refmask = ((ctx->Stencil.Ref[0] & 0xff) << R300_STENCILREF_SHIFT)
+	     | ((ctx->Stencil.ValueMask[0] & 0xff) << R300_STENCILMASK_SHIFT);
 
 	R300_STATECHANGE(rmesa, zs);
 	rmesa->hw.zs.cmd[R300_ZS_CNTL_0] |= R300_STENCIL_FRONT_BACK;
@@ -878,6 +894,8 @@ static void r300StencilMaskSeparate(GLcontext * ctx, GLenum face, GLuint mask)
 {
 	r300ContextPtr rmesa = R300_CONTEXT(ctx);
 
+	r300CatchStencilFallback(ctx);
+
 	R300_STATECHANGE(rmesa, zs);
 	rmesa->hw.zs.cmd[R300_ZS_CNTL_2] &=
 	    ~(R300_STENCILREF_MASK <<
@@ -894,6 +912,8 @@ static void r300StencilOpSeparate(GLcontext * ctx, GLenum face,
 	r300ContextPtr rmesa = R300_CONTEXT(ctx);
 	const unsigned back = ctx->Stencil._BackFace;
 
+	r300CatchStencilFallback(ctx);
+
 	R300_STATECHANGE(rmesa, zs);
 	/* It is easier to mask what's left.. */
 	rmesa->hw.zs.cmd[R300_ZS_CNTL_1] &=
@@ -1934,14 +1954,31 @@ static void r300Enable(GLcontext * ctx, GLenum cap, GLboolean state)
 	case GL_CLIP_PLANE5:
 		r300SetClipPlaneState(ctx, cap, state);
 		break;
+	case GL_CULL_FACE:
+		r300UpdateCulling(ctx);
+		break;
 	case GL_DEPTH_TEST:
 		r300SetDepthState(ctx);
 		break;
-	case GL_STENCIL_TEST:
-		r300SetStencilState(ctx, state);
+	case GL_LINE_SMOOTH:
+		if (rmesa->options.conformance_mode)
+			r300SwitchFallback(ctx, R300_FALLBACK_LINE_SMOOTH, ctx->Line.SmoothFlag);
 		break;
-	case GL_CULL_FACE:
-		r300UpdateCulling(ctx);
+	case GL_LINE_STIPPLE:
+		if (rmesa->options.conformance_mode)
+			r300SwitchFallback(ctx, R300_FALLBACK_LINE_STIPPLE, ctx->Line.StippleFlag);
+		break;
+	case GL_POINT_SMOOTH:
+		if (rmesa->options.conformance_mode)
+			r300SwitchFallback(ctx, R300_FALLBACK_POINT_SMOOTH, ctx->Point.SmoothFlag);
+		break;
+	case GL_POLYGON_SMOOTH:
+		if (rmesa->options.conformance_mode)
+			r300SwitchFallback(ctx, R300_FALLBACK_POLYGON_SMOOTH, ctx->Polygon.SmoothFlag);
+		break;
+	case GL_POLYGON_STIPPLE:
+		if (rmesa->options.conformance_mode)
+			r300SwitchFallback(ctx, R300_FALLBACK_POLYGON_STIPPLE, ctx->Polygon.StippleFlag);
 		break;
 	case GL_POLYGON_OFFSET_POINT:
 	case GL_POLYGON_OFFSET_LINE:
@@ -1953,6 +1990,9 @@ static void r300Enable(GLcontext * ctx, GLenum cap, GLboolean state)
 		rmesa->radeon.state.scissor.enabled = state;
 		radeonUpdateScissor( ctx );
 		break;
+	case GL_STENCIL_TEST:
+		r300SetStencilState(ctx, state);
+		break;
 	default:
 		break;
 	}
@@ -2180,9 +2220,11 @@ void r300UpdateShaders(r300ContextPtr rmesa)
 {
 	GLcontext *ctx;
 	struct r300_vertex_program *vp;
+	struct r300_fragment_program *fp;
 	int i;
 
 	ctx = rmesa->radeon.glCtx;
+	fp = (struct r300_fragment_program *) ctx->FragmentProgram._Current;
 
 	if (rmesa->radeon.NewGLState && rmesa->options.hw_tcl_enabled) {
 		rmesa->radeon.NewGLState = 0;
@@ -2202,20 +2244,17 @@ void r300UpdateShaders(r300ContextPtr rmesa)
 		}
 
 		r300SelectVertexShader(rmesa);
-		vp = (struct r300_vertex_program *)
-		    CURRENT_VERTEX_SHADER(ctx);
-		/*if (vp->translated == GL_FALSE)
-		   r300TranslateVertexShader(vp); */
-		if (vp->translated == GL_FALSE) {
-			fprintf(stderr, "Failing back to sw-tcl\n");
-			rmesa->options.hw_tcl_enabled = 0;
-			r300ResetHwState(rmesa);
-
-			r300UpdateStateParameters(ctx, _NEW_PROGRAM |
-                                      _NEW_PROGRAM_CONSTANTS);
-			return;
-		}
+		vp = (struct r300_vertex_program *) CURRENT_VERTEX_SHADER(ctx);
+		r300SwitchFallback(ctx, R300_FALLBACK_VERTEX_PROGRAM, !vp->native);
+	}
+
+	if (fp) {
+		if (!fp->translated)
+			r300TranslateFragmentShader(ctx, ctx->FragmentProgram._Current);
+
+		r300SwitchFallback(ctx, R300_FALLBACK_FRAGMENT_PROGRAM, fp->error);
 	}
+
 	r300UpdateStateParameters(ctx, _NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS);
 }
 
@@ -2457,9 +2496,7 @@ void r300InitState(r300ContextPtr r300)
 
 static void r300RenderMode(GLcontext * ctx, GLenum mode)
 {
-	r300ContextPtr rmesa = R300_CONTEXT(ctx);
-	(void)rmesa;
-	(void)mode;
+	r300SwitchFallback(ctx, R300_FALLBACK_RENDER_MODE, ctx->RenderMode != GL_RENDER);
 }
 
 /**