Merge branch 'r345-cleanup' of git://people.freedesktop.org/~agd5f/mesa into r500test
[mesa.git] / src / mesa / drivers / dri / r300 / r300_render.c
index 63b21b9379abf5056bb47d24e0468441d8196770..fc07105c5604d319dbe90821cd27846e42f14acb 100644 (file)
@@ -25,9 +25,29 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 **************************************************************************/
 
-/*
- * Authors:
- *   Nicolai Haehnle <prefect_@gmx.net>
+/**
+ * \file
+ *
+ * \brief R300 Render (Vertex Buffer Implementation)
+ *
+ * The immediate implementation has been removed from CVS in favor of the vertex
+ * buffer implementation.
+ *
+ * The render functions are called by the pipeline manager to render a batch of
+ * primitives. They return TRUE to pass on to the next stage (i.e. software
+ * rasterization) or FALSE to indicate that the pipeline has finished after
+ * rendering something.
+ *
+ * When falling back to software TCL still attempt to use hardware
+ * rasterization.
+ *
+ * I am not sure that the cache related registers are setup correctly, but
+ * obviously this does work... Further investigation is needed.
+ *
+ * \author Nicolai Haehnle <prefect_@gmx.net>
+ *
+ * \todo Add immediate implementation back? Perhaps this is useful if there are
+ * no bugs...
  */
 
 #include "glheader.h"
@@ -38,14 +58,12 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "context.h"
 #include "dd.h"
 #include "simple_list.h"
-
 #include "api_arrayelt.h"
 #include "swrast/swrast.h"
 #include "swrast_setup/swrast_setup.h"
 #include "vbo/vbo.h"
 #include "tnl/tnl.h"
 #include "tnl/t_vp_build.h"
-
 #include "radeon_reg.h"
 #include "radeon_macros.h"
 #include "radeon_ioctl.h"
@@ -54,321 +72,252 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "r300_ioctl.h"
 #include "r300_state.h"
 #include "r300_reg.h"
-#include "r300_program.h"
 #include "r300_tex.h"
-#include "r300_maos.h"
 #include "r300_emit.h"
-
 extern int future_hw_tcl_on;
 
-/**********************************************************************
-*                     Hardware rasterization
-*
-* When we fell back to software TCL, we still try to use the
-* rasterization hardware for rendering.
-**********************************************************************/
-
-static int r300_get_primitive_type(r300ContextPtr rmesa, GLcontext *ctx, int prim)
+/**
+ * \brief Convert a OpenGL primitive type into a R300 primitive type.
+ */
+int r300PrimitiveType(r300ContextPtr rmesa, int prim)
 {
-       int type=-1;
-
        switch (prim & PRIM_MODE_MASK) {
        case GL_POINTS:
-               type=R300_VAP_VF_CNTL__PRIM_POINTS;
-               break;
+               return R300_VAP_VF_CNTL__PRIM_POINTS;
+               break;
        case GL_LINES:
-               type=R300_VAP_VF_CNTL__PRIM_LINES;
-               break;
+               return R300_VAP_VF_CNTL__PRIM_LINES;
+               break;
        case GL_LINE_STRIP:
-               type=R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
-               break;
+               return R300_VAP_VF_CNTL__PRIM_LINE_STRIP;
+               break;
        case GL_LINE_LOOP:
-               type=R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
-               break;
-       case GL_TRIANGLES:
-               type=R300_VAP_VF_CNTL__PRIM_TRIANGLES;
-               break;
-       case GL_TRIANGLE_STRIP:
-               type=R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
-               break;
-       case GL_TRIANGLE_FAN:
-               type=R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
-               break;
+               return R300_VAP_VF_CNTL__PRIM_LINE_LOOP;
+               break;
+       case GL_TRIANGLES:
+               return R300_VAP_VF_CNTL__PRIM_TRIANGLES;
+               break;
+       case GL_TRIANGLE_STRIP:
+               return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP;
+               break;
+       case GL_TRIANGLE_FAN:
+               return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN;
+               break;
        case GL_QUADS:
-               type=R300_VAP_VF_CNTL__PRIM_QUADS;
-               break;
+               return R300_VAP_VF_CNTL__PRIM_QUADS;
+               break;
        case GL_QUAD_STRIP:
-               type=R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
-               break;
+               return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP;
+               break;
        case GL_POLYGON:
-               type=R300_VAP_VF_CNTL__PRIM_POLYGON;
+               return R300_VAP_VF_CNTL__PRIM_POLYGON;
                break;
-       default:
-               fprintf(stderr, "%s:%s Do not know how to handle primitive %02x - help me !\n",
-                       __FILE__, __FUNCTION__,
-                       prim & PRIM_MODE_MASK);
+       default:
+               assert(0);
                return -1;
-               break;
-       }
-   return type;
+               break;
+       }
 }
 
-int r300_get_num_verts(r300ContextPtr rmesa, int num_verts, int prim)
+int r300NumVerts(r300ContextPtr rmesa, int num_verts, int prim)
 {
-       int verts_off=0;
-       char *name="UNKNOWN";
+       int verts_off = 0;
 
        switch (prim & PRIM_MODE_MASK) {
        case GL_POINTS:
-               name="P";
                verts_off = 0;
-               break;
+               break;
        case GL_LINES:
-               name="L";
                verts_off = num_verts % 2;
-               break;
+               break;
        case GL_LINE_STRIP:
-               name="LS";
-               if(num_verts < 2)
+               if (num_verts < 2)
                        verts_off = num_verts;
-               break;
+               break;
        case GL_LINE_LOOP:
-               name="LL";
-               if(num_verts < 2)
+               if (num_verts < 2)
                        verts_off = num_verts;
-               break;
-       case GL_TRIANGLES:
-               name="T";
+               break;
+       case GL_TRIANGLES:
                verts_off = num_verts % 3;
-               break;
-       case GL_TRIANGLE_STRIP:
-               name="TS";
-               if(num_verts < 3)
+               break;
+       case GL_TRIANGLE_STRIP:
+               if (num_verts < 3)
                        verts_off = num_verts;
-               break;
-       case GL_TRIANGLE_FAN:
-               name="TF";
-               if(num_verts < 3)
+               break;
+       case GL_TRIANGLE_FAN:
+               if (num_verts < 3)
                        verts_off = num_verts;
-               break;
+               break;
        case GL_QUADS:
-               name="Q";
                verts_off = num_verts % 4;
-               break;
+               break;
        case GL_QUAD_STRIP:
-               name="QS";
-               if(num_verts < 4)
+               if (num_verts < 4)
                        verts_off = num_verts;
                else
                        verts_off = num_verts % 2;
-               break;
+               break;
        case GL_POLYGON:
-               name="P";
-               if(num_verts < 3)
+               if (num_verts < 3)
                        verts_off = num_verts;
                break;
-       default:
-               fprintf(stderr, "%s:%s Do not know how to handle primitive %02x - help me !\n",
-                       __FILE__, __FUNCTION__,
-                       prim & PRIM_MODE_MASK);
+       default:
+               assert(0);
                return -1;
-               break;
-       }
-
-       if (RADEON_DEBUG & DEBUG_VERTS) {
-               if (num_verts - verts_off == 0) {
-                       WARN_ONCE("user error: Need more than %d vertices to draw primitive %s !\n", num_verts, name);
-                       return 0;
-               }
-
-               if (verts_off > 0) {
-                       WARN_ONCE("user error: %d is not a valid number of vertices for primitive %s !\n", num_verts, name);
-               }
+               break;
        }
 
        return num_verts - verts_off;
 }
 
-/* Immediate implementation has been removed from CVS. */
+static void r300EmitElts(GLcontext * ctx, void *elts, unsigned long n_elts)
+{
+       r300ContextPtr rmesa = R300_CONTEXT(ctx);
+       struct r300_dma_region *rvb = &rmesa->state.elt_dma;
+       void *out;
+
+       if (r300IsGartMemory(rmesa, elts, n_elts * 4)) {
+               rvb->address = rmesa->radeon.radeonScreen->gartTextures.map;
+               rvb->start = ((char *)elts) - rvb->address;
+               rvb->aos_offset =
+                   rmesa->radeon.radeonScreen->gart_texture_offset +
+                   rvb->start;
+               return;
+       } else if (r300IsGartMemory(rmesa, elts, 1)) {
+               WARN_ONCE("Pointer not within GART memory!\n");
+               _mesa_exit(-1);
+       }
 
-/* vertex buffer implementation */
+       r300AllocDmaRegion(rmesa, rvb, n_elts * 4, 4);
+       rvb->aos_offset = GET_START(rvb);
+
+       out = rvb->address + rvb->start;
+       memcpy(out, elts, n_elts * 4);
+}
 
-static void inline fire_EB(r300ContextPtr rmesa, unsigned long addr, int vertex_count, int type, int elt_size)
+static void r300FireEB(r300ContextPtr rmesa, unsigned long addr,
+                      int vertex_count, int type)
 {
        int cmd_reserved = 0;
        int cmd_written = 0;
        drm_radeon_cmd_header_t *cmd = NULL;
-       unsigned long addr_a;
-       unsigned long t_addr;
-       unsigned long magic_1, magic_2;
-       GLcontext *ctx;
-       ctx = rmesa->radeon.glCtx;
 
-       assert(elt_size == 2 || elt_size == 4);
+       start_packet3(CP_PACKET3(R300_PACKET3_3D_DRAW_INDX_2, 0), 0);
+       e32(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (vertex_count << 16) | type | R300_VAP_VF_CNTL__INDEX_SIZE_32bit);
 
-       if(addr & (elt_size-1)){
-               WARN_ONCE("Badly aligned buffer\n");
-               return ;
-       }
-#ifdef OPTIMIZE_ELTS
-       addr_a = 0;
+       start_packet3(CP_PACKET3(R300_PACKET3_INDX_BUFFER, 2), 2);
+       e32(R300_EB_UNK1 | (0 << 16) | R300_EB_UNK2);
+       e32(addr);
+       e32(vertex_count);
+}
 
-       magic_1 = (addr % 32) / 4;
-       t_addr = addr & (~0x1d);
-       magic_2 = (vertex_count + 1 + (t_addr & 0x2)) / 2 + magic_1;
+static void r300EmitAOS(r300ContextPtr rmesa, GLuint nr, GLuint offset)
+{
+       int sz = 1 + (nr >> 1) * 3 + (nr & 1) * 2;
+       int i;
+       int cmd_reserved = 0;
+       int cmd_written = 0;
+       drm_radeon_cmd_header_t *cmd = NULL;
 
-       check_space(6);
+       if (RADEON_DEBUG & DEBUG_VERTS)
+               fprintf(stderr, "%s: nr=%d, ofs=0x%08x\n", __FUNCTION__, nr,
+                       offset);
 
-       start_packet3(RADEON_CP_PACKET3_3D_DRAW_INDX_2, 0);
-       if(elt_size == 4){
-               e32(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (vertex_count<<16) | type | R300_VAP_VF_CNTL__INDEX_SIZE_32bit);
-       } else {
-               e32(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (vertex_count<<16) | type);
-       }
+       start_packet3(CP_PACKET3(R300_PACKET3_3D_LOAD_VBPNTR, sz - 1), sz - 1);
+       e32(nr);
 
-       start_packet3(RADEON_CP_PACKET3_INDX_BUFFER, 2);
-       if(elt_size == 4){
-               e32(R300_EB_UNK1 | (0 << 16) | R300_EB_UNK2);
-               e32(addr /*& 0xffffffe3*/);
-       } else {
-               e32(R300_EB_UNK1 | (magic_1 << 16) | R300_EB_UNK2);
-               e32(t_addr);
-       }
+       for (i = 0; i + 1 < nr; i += 2) {
+               e32((rmesa->state.aos[i].aos_size << 0) |
+                   (rmesa->state.aos[i].aos_stride << 8) |
+                   (rmesa->state.aos[i + 1].aos_size << 16) |
+                   (rmesa->state.aos[i + 1].aos_stride << 24));
 
-       if(elt_size == 4){
-               e32(vertex_count /*+ addr_a/4*/); /* Total number of dwords needed? */
-       } else {
-               e32(magic_2); /* Total number of dwords needed? */
+               e32(rmesa->state.aos[i].aos_offset + offset * 4 * rmesa->state.aos[i].aos_stride);
+               e32(rmesa->state.aos[i + 1].aos_offset + offset * 4 * rmesa->state.aos[i + 1].aos_stride);
        }
-       //cp_delay(rmesa, 1);
-#if 0
-       fprintf(stderr, "magic_1 %d\n", magic_1);
-       fprintf(stderr, "t_addr %x\n", t_addr);
-       fprintf(stderr, "magic_2 %d\n", magic_2);
-       exit(1);
-#endif
-#else
-       (void)magic_2, (void)magic_1, (void)t_addr;
-
-       addr_a = 0;
-
-       check_space(6);
 
-       start_packet3(RADEON_CP_PACKET3_3D_DRAW_INDX_2, 0);
-       if(elt_size == 4){
-               e32(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (vertex_count<<16) | type | R300_VAP_VF_CNTL__INDEX_SIZE_32bit);
-       } else {
-               e32(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (vertex_count<<16) | type);
+       if (nr & 1) {
+               e32((rmesa->state.aos[nr - 1].aos_size << 0) |
+                   (rmesa->state.aos[nr - 1].aos_stride << 8));
+               e32(rmesa->state.aos[nr - 1].aos_offset + offset * 4 * rmesa->state.aos[nr - 1].aos_stride);
        }
+}
 
-       start_packet3(RADEON_CP_PACKET3_INDX_BUFFER, 2);
-       e32(R300_EB_UNK1 | (0 << 16) | R300_EB_UNK2);
-       e32(addr /*& 0xffffffe3*/);
+static void r300FireAOS(r300ContextPtr rmesa, int vertex_count, int type)
+{
+       int cmd_reserved = 0;
+       int cmd_written = 0;
+       drm_radeon_cmd_header_t *cmd = NULL;
 
-       if(elt_size == 4){
-               e32(vertex_count /*+ addr_a/4*/); /* Total number of dwords needed? */
-       } else {
-               e32((vertex_count+1)/2 /*+ addr_a/4*/); /* Total number of dwords needed? */
-       }
-       //cp_delay(rmesa, 1);
-#endif
+       start_packet3(CP_PACKET3(R300_PACKET3_3D_DRAW_VBUF_2, 0), 0);
+       e32(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (vertex_count << 16) | type);
 }
 
-static void r300_render_vb_primitive(r300ContextPtr rmesa,
-       GLcontext *ctx,
-       int start,
-       int end,
-       int prim)
+static void r300RunRenderPrimitive(r300ContextPtr rmesa, GLcontext * ctx,
+                                  int start, int end, int prim)
 {
-   int type, num_verts;
-
-   type=r300_get_primitive_type(rmesa, ctx, prim);
-   num_verts=r300_get_num_verts(rmesa, end-start, prim);
+       int type, num_verts;
+       TNLcontext *tnl = TNL_CONTEXT(ctx);
+       struct vertex_buffer *vb = &tnl->vb;
 
-   if(type<0 || num_verts <= 0)return;
+       type = r300PrimitiveType(rmesa, prim);
+       num_verts = r300NumVerts(rmesa, end - start, prim);
 
-   if(rmesa->state.VB.Elts){
-       r300EmitAOS(rmesa, rmesa->state.aos_count, /*0*/start);
-#if 0
-       int cmd_reserved = 0;
-       int cmd_written = 0;
-       drm_radeon_cmd_header_t *cmd = NULL;
-       int i;
-       start_index32_packet(num_verts, type);
-       for(i=0; i < num_verts; i++)
-               e32(((unsigned long *)rmesa->state.VB.Elts)[i]/*rmesa->state.Elts[start+i]*/); /* start ? */
-#else
-       if(num_verts == 1){
-               //start_index32_packet(num_verts, type);
-               //e32(rmesa->state.Elts[start]);
+       if (type < 0 || num_verts <= 0)
                return;
-       }
 
-       if(num_verts > 65535){ /* not implemented yet */
-               WARN_ONCE("Too many elts\n");
-               return;
+       if (vb->Elts) {
+               r300EmitAOS(rmesa, rmesa->state.aos_count, start);
+               if (num_verts > 65535) {
+                       /* not implemented yet */
+                       WARN_ONCE("Too many elts\n");
+                       return;
+               }
+               r300EmitElts(ctx, vb->Elts, num_verts);
+               r300FireEB(rmesa, rmesa->state.elt_dma.aos_offset, num_verts, type);
+       } else {
+               r300EmitAOS(rmesa, rmesa->state.aos_count, start);
+               r300FireAOS(rmesa, num_verts, type);
        }
-
-       r300EmitElts(ctx, rmesa->state.VB.Elts, num_verts, rmesa->state.VB.elt_size);
-       fire_EB(rmesa, rmesa->state.elt_dma.aos_offset, num_verts, type, rmesa->state.VB.elt_size);
-#endif
-   }else{
-          r300EmitAOS(rmesa, rmesa->state.aos_count, start);
-          fire_AOS(rmesa, num_verts, type);
-   }
 }
 
-GLboolean r300_run_vb_render(GLcontext *ctx,
-                                struct tnl_pipeline_stage *stage)
+static GLboolean r300RunRender(GLcontext * ctx,
+                              struct tnl_pipeline_stage *stage)
 {
        r300ContextPtr rmesa = R300_CONTEXT(ctx);
-       struct radeon_vertex_buffer *VB = &rmesa->state.VB;
        int i;
-       int cmd_reserved = 0;
-       int cmd_written = 0;
-       drm_radeon_cmd_header_t *cmd = NULL;
+       TNLcontext *tnl = TNL_CONTEXT(ctx);
+       struct vertex_buffer *vb = &tnl->vb;
 
 
        if (RADEON_DEBUG & DEBUG_PRIMS)
                fprintf(stderr, "%s\n", __FUNCTION__);
 
-       if (stage) {
-               TNLcontext *tnl = TNL_CONTEXT(ctx);
-               radeon_vb_to_rvb(rmesa, VB, &tnl->vb);
-       }
-
        r300UpdateShaders(rmesa);
        if (r300EmitArrays(ctx))
                return GL_TRUE;
 
        r300UpdateShaderStates(rmesa);
 
-       reg_start(R300_RB3D_DSTCACHE_CTLSTAT,0);
-       e32(R300_RB3D_DSTCACHE_UNKNOWN_0A);
-
-       reg_start(R300_RB3D_ZCACHE_CTLSTAT,0);
-       e32(R300_RB3D_ZCACHE_UNKNOWN_03);
-
+       r300EmitCacheFlush(rmesa);
        r300EmitState(rmesa);
 
-       for(i=0; i < VB->PrimitiveCount; i++){
-               GLuint prim = _tnl_translate_prim(&VB->Primitive[i]);
-               GLuint start = VB->Primitive[i].start;
-               GLuint length = VB->Primitive[i].count;
-
-               r300_render_vb_primitive(rmesa, ctx, start, start + length, prim);
+       for (i = 0; i < vb->PrimitiveCount; i++) {
+               GLuint prim = _tnl_translate_prim(&vb->Primitive[i]);
+               GLuint start = vb->Primitive[i].start;
+               GLuint end = vb->Primitive[i].start + vb->Primitive[i].count;
+               r300RunRenderPrimitive(rmesa, ctx, start, end, prim);
        }
 
-       reg_start(R300_RB3D_DSTCACHE_CTLSTAT,0);
-       e32(R300_RB3D_DSTCACHE_UNKNOWN_0A /*R300_RB3D_DSTCACHE_UNKNOWN_02*/);
-
-       reg_start(R300_RB3D_ZCACHE_CTLSTAT,0);
-       e32(R300_RB3D_ZCACHE_UNKNOWN_03 /*R300_RB3D_ZCACHE_UNKNOWN_01*/);
+       r300EmitCacheFlush(rmesa);
 
 #ifdef USER_BUFFERS
        r300UseArrays(ctx);
 #endif
+
        r300ReleaseArrays(ctx);
+
        return GL_FALSE;
 }
 
@@ -382,89 +331,60 @@ GLboolean r300_run_vb_render(GLcontext *ctx,
                }                                                       \
        } while(0)
 
-int r300Fallback(GLcontext *ctx)
+static int r300Fallback(GLcontext * ctx)
 {
        r300ContextPtr r300 = R300_CONTEXT(ctx);
-       struct r300_fragment_program *rp =
-               (struct r300_fragment_program *)
-               (char *)ctx->FragmentProgram._Current;
-       int i;
-
-       if (rp) {
-               if (!rp->translated)
-                       r300_translate_fragment_shader(r300, rp);
-
-               FALLBACK_IF(!rp->translated);
+       /* Do we need to use new-style shaders?
+        * Also is there a better way to do this? */
+       if (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515) {
+               struct r500_fragment_program *fp = (struct r500_fragment_program *)
+           (char *)ctx->FragmentProgram._Current;
+               if (fp) {
+                       if (!fp->translated) {
+                               r500TranslateFragmentShader(r300, fp);
+                               FALLBACK_IF(!fp->translated);
+                       }
+               }
+       } else {
+               struct r300_fragment_program *fp = (struct r300_fragment_program *)
+           (char *)ctx->FragmentProgram._Current;
+               if (fp) {
+                       if (!fp->translated) {
+                               r300TranslateFragmentShader(r300, fp);
+                               FALLBACK_IF(!fp->translated);
+                       }
+               }
        }
 
-       /* We do not do SELECT or FEEDBACK (yet ?)
-        * Is it worth doing them ?
-        */
        FALLBACK_IF(ctx->RenderMode != GL_RENDER);
 
-#if 0
-       /* These should work now.. */
-       FALLBACK_IF(ctx->Color.DitherFlag);
-       /* GL_ALPHA_TEST */
-       FALLBACK_IF(ctx->Color.AlphaEnabled);
-       /* GL_BLEND */
-       FALLBACK_IF(ctx->Color.BlendEnabled);
-       /* GL_POLYGON_OFFSET_FILL */
-       FALLBACK_IF(ctx->Polygon.OffsetFill);
-       /* FOG seems to trigger an unknown output
-        *  in vertex program.
-        */
-       FALLBACK_IF(ctx->Fog.Enabled);
-#endif
-       FALLBACK_IF(ctx->Stencil._TestTwoSide &&
-                   (ctx->Stencil.Ref[0] != ctx->Stencil.Ref[1] ||
-                    ctx->Stencil.ValueMask[0] != ctx->Stencil.ValueMask[1] ||
-                    ctx->Stencil.WriteMask[0] != ctx->Stencil.WriteMask[1]));
-
-       if(!r300->disable_lowimpact_fallback){
-               /* GL_POLYGON_OFFSET_POINT */
-               FALLBACK_IF(ctx->Polygon.OffsetPoint);
-               /* GL_POLYGON_OFFSET_LINE */
-               FALLBACK_IF(ctx->Polygon.OffsetLine);
-#if 0
-               /* GL_STENCIL_TEST */
-               FALLBACK_IF(ctx->Stencil.Enabled);
-               /* GL_POLYGON_SMOOTH disabling to get blender going */
-               FALLBACK_IF(ctx->Polygon.SmoothFlag);
-#endif
-               /* GL_POLYGON_STIPPLE */
+       FALLBACK_IF(ctx->Stencil._TestTwoSide
+                   && (ctx->Stencil.Ref[0] != ctx->Stencil.Ref[1]
+                       || ctx->Stencil.ValueMask[0] !=
+                       ctx->Stencil.ValueMask[1]
+                       || ctx->Stencil.WriteMask[0] !=
+                       ctx->Stencil.WriteMask[1]));
+
+       FALLBACK_IF(ctx->Color.ColorLogicOpEnabled);
+
+       if (ctx->Extensions.NV_point_sprite || ctx->Extensions.ARB_point_sprite)
+               FALLBACK_IF(ctx->Point.PointSprite);
+
+       if (!r300->disable_lowimpact_fallback) {
                FALLBACK_IF(ctx->Polygon.StippleFlag);
-               /* GL_MULTISAMPLE_ARB */
                FALLBACK_IF(ctx->Multisample.Enabled);
-               /* blender ? */
                FALLBACK_IF(ctx->Line.StippleFlag);
-               /* GL_LINE_SMOOTH */
                FALLBACK_IF(ctx->Line.SmoothFlag);
-               /* GL_POINT_SMOOTH */
                FALLBACK_IF(ctx->Point.SmoothFlag);
        }
 
-       /* Fallback for LOGICOP */
-       FALLBACK_IF(ctx->Color.ColorLogicOpEnabled);
-
-       /* Rest could be done with vertex fragments */
-       if (ctx->Extensions.NV_point_sprite ||
-           ctx->Extensions.ARB_point_sprite)
-               /* GL_POINT_SPRITE_NV */
-               FALLBACK_IF(ctx->Point.PointSprite);
-
        return R300_FALLBACK_NONE;
 }
 
-/**
- * Called by the pipeline manager to render a batch of primitives.
- * We can return true to pass on to the next stage (i.e. software
- * rasterization) or false to indicate that the pipeline has finished
- * after we render something.
- */
-static GLboolean r300_run_render(GLcontext *ctx,
-                                struct tnl_pipeline_stage *stage)
+static GLboolean r300RunNonTCLRender(GLcontext * ctx,
+                                    struct tnl_pipeline_stage *stage)
 {
+       r300ContextPtr rmesa = R300_CONTEXT(ctx);
 
        if (RADEON_DEBUG & DEBUG_PRIMS)
                fprintf(stderr, "%s\n", __FUNCTION__);
@@ -472,29 +392,24 @@ static GLboolean r300_run_render(GLcontext *ctx,
        if (r300Fallback(ctx) >= R300_FALLBACK_RAST)
                return GL_TRUE;
 
-       return r300_run_vb_render(ctx, stage);
-}
+       if (!(rmesa->radeon.radeonScreen->chip_flags & RADEON_CHIPSET_TCL))
+               return GL_TRUE;
 
-const struct tnl_pipeline_stage _r300_render_stage = {
-       "r300 hw rasterize",
-       NULL,
-       NULL,
-       NULL,
-       NULL,
-       r300_run_render         /* run */
-};
+       return r300RunRender(ctx, stage);
+}
 
-static GLboolean r300_run_tcl_render(GLcontext *ctx,
-                                struct tnl_pipeline_stage *stage)
+static GLboolean r300RunTCLRender(GLcontext * ctx,
+                                 struct tnl_pipeline_stage *stage)
 {
        r300ContextPtr rmesa = R300_CONTEXT(ctx);
        struct r300_vertex_program *vp;
 
-       hw_tcl_on=future_hw_tcl_on;
+       hw_tcl_on = future_hw_tcl_on;
 
        if (RADEON_DEBUG & DEBUG_PRIMS)
                fprintf(stderr, "%s\n", __FUNCTION__);
-       if(hw_tcl_on == GL_FALSE)
+
+       if (hw_tcl_on == GL_FALSE)
                return GL_TRUE;
 
        if (r300Fallback(ctx) >= R300_FALLBACK_TCL) {
@@ -505,42 +420,28 @@ static GLboolean r300_run_tcl_render(GLcontext *ctx,
        r300UpdateShaders(rmesa);
 
        vp = (struct r300_vertex_program *)CURRENT_VERTEX_SHADER(ctx);
-#if 0 /* Draw every second request with software arb vp */
-       vp->native++;
-       vp->native &= 1;
-       //vp->native = GL_FALSE;
-#endif
-
-#if 0 /* You dont want to know what this does... */
-       TNLcontext *tnl = TNL_CONTEXT(ctx);
-       struct tnl_cache *cache;
-       struct tnl_cache_item *c;
-
-       cache = tnl->vp_cache;
-       c = cache->items[0xc000cc0e % cache->size];
-
-       if(c && c->data == vp)
-               vp->native = GL_FALSE;
-
-#endif
-#if 0
-       vp->native = GL_FALSE;
-#endif
        if (vp->native == GL_FALSE) {
                hw_tcl_on = GL_FALSE;
                return GL_TRUE;
        }
-       //r300UpdateShaderStates(rmesa);
 
-       return r300_run_vb_render(ctx, stage);
+       return r300RunRender(ctx, stage);
 }
 
-const struct tnl_pipeline_stage _r300_tcl_stage = {
-       "r300 tcl",
+const struct tnl_pipeline_stage _r300_render_stage = {
+       "r300 Hardware Rasterization",
        NULL,
        NULL,
        NULL,
        NULL,
-       r300_run_tcl_render     /* run */
+       r300RunNonTCLRender
 };
 
+const struct tnl_pipeline_stage _r300_tcl_stage = {
+       "r300 Hardware Transform, Clipping and Lighting",
+       NULL,
+       NULL,
+       NULL,
+       NULL,
+       r300RunTCLRender
+};