Support for PolygonMode. Not too far from working even though i almost gave up once...

diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h
index 60b2c8074e7243ea2bcdfe21952e9ae02b3e36b3..1f90da2a7ac7b4e41b2f2676b738adae31c32414 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_reg.h
+++ b/src/mesa/drivers/dri/r300/r300_reg.h
@@ -436,6 +436,9 @@ probably work also. --aet
 
 /* Linestipple factor. 3a088889 == 1.0, 3baaaaa9 == 10.0 */
 #define R300_RE_LINE_STIPPLE_FACTOR           0x4238
+
+#define R300_RE_POLYGON_MODE                  0x4288
+
 #define R300_RE_LINE_STIPPLE_PTRN1            0x43E0
 #define R300_RE_LINE_STIPPLE_PTRN2            0x43E4
 

diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c
index 985d0522d60f0fae3e7ac6814ea31edc8f1b7131..6952bf2b0b243f2e71ccdcedeb5ca364a610ca3a 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_state.c
+++ b/src/mesa/drivers/dri/r300/r300_state.c
@@ -671,6 +671,95 @@ static void r300LineWidth(GLcontext *ctx, GLfloat widthf)
        r300->hw.lcntl.cmd[1] |= R300_LINE_CNT_UNK1;
 }
 
+/*
+
+glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); :  00000091 (  1001 0001)
+glPolygonMode(GL_FRONT_AND_BACK, GL_POINT); : 00000001 (          1)
+
+glPolygonMode(GL_FRONT, GL_LINE); :           00000111 (1 0001 0001)
+glPolygonMode(GL_FRONT, GL_POINT); :          00000101 (1 0000 0001)
+
+glPolygonMode(GL_BACK, GL_LINE); :            000000a1 (  1010 0001)
+glPolygonMode(GL_BACK, GL_POINT); :           00000021 (    10 0001)
+
+*/
+
+/* exclusive */
+#define PM_NOT_BACK   (1<<8)
+#define PM_NOT_FRONT  (1<<5)
+
+#define PM_FRONT_LINE (1<<4)
+#define PM_BACK_LINE  (1<<7)
+
+static void r300PolygonMode(GLcontext *ctx, GLenum face, GLenum mode)
+{
+       r300ContextPtr r300 = R300_CONTEXT(ctx);
+       unsigned long hw_mode=0;
+       
+       hw_mode=r300->hw.unk4288.cmd[1];
+       hw_mode |= 1; /* enables point mode by default */
+
+       switch (face) {
+       case GL_FRONT:
+               //fprintf(stderr, "front\n");
+               hw_mode &= ~PM_NOT_FRONT;
+               switch (mode) {
+               case GL_LINE:
+                       hw_mode |= PM_FRONT_LINE;
+               break;
+               case GL_POINT:
+                       hw_mode &= ~PM_FRONT_LINE;
+               break;
+               case GL_FILL: /* No idea */
+                       hw_mode = 0;
+               break;
+               }
+       break;
+       
+       case GL_BACK:
+               //fprintf(stderr, "back\n");
+               hw_mode &= ~PM_NOT_BACK;
+               switch (mode) {
+               case GL_LINE:
+                       hw_mode |= PM_BACK_LINE;
+               break;
+               case GL_POINT:
+                       hw_mode &= ~PM_BACK_LINE;
+               break;
+               case GL_FILL: /* No idea */
+                       hw_mode = 0;
+               break;
+               }
+       break;
+       
+       case GL_FRONT_AND_BACK:
+               //fprintf(stderr, "front and back\n");
+               hw_mode &= ~PM_NOT_FRONT;
+               hw_mode &= ~PM_NOT_BACK;
+               switch (mode) {
+               case GL_LINE:
+                       hw_mode |= PM_FRONT_LINE;
+                       hw_mode |= PM_BACK_LINE;
+               break;
+               case GL_POINT:
+                       hw_mode &= ~PM_FRONT_LINE;
+                       hw_mode &= ~PM_BACK_LINE;
+               break;
+               case GL_FILL:
+                       hw_mode = 0;
+               break;
+               }
+       break;
+       }
+       
+       //if( front and back fill) hw_mode=0;
+       
+       if(r300->hw.unk4288.cmd[1] != hw_mode){
+               R300_STATECHANGE(r300, unk4288);
+               r300->hw.unk4288.cmd[1] = hw_mode;
+       }
+}
+
 /* =============================================================
  * Stencil
  */
@@ -1823,7 +1912,11 @@ void r300ResetHwState(r300ContextPtr r300)
        r300->hw.unk4274.cmd[3] = 0x00000000;
        r300->hw.unk4274.cmd[4] = 0x00000000;
 
+       r300PolygonMode(ctx, GL_FRONT, ctx->Polygon.FrontMode);
+       r300PolygonMode(ctx, GL_BACK, ctx->Polygon.BackMode);
+#if 0
        r300->hw.unk4288.cmd[1] = 0x00000000;
+#endif 
        r300->hw.unk4288.cmd[2] = 0x00000001;
        r300->hw.unk4288.cmd[3] = 0x00000000;
        r300->hw.unk4288.cmd[4] = 0x00000000;
@@ -2040,4 +2133,5 @@ void r300InitStateFuncs(struct dd_function_table* functions)
        functions->LineWidth = r300LineWidth;
        
        functions->PolygonOffset = r300PolygonOffset;
+       functions->PolygonMode = r300PolygonMode;
 }