r300-gallium: Stubs for vertex shaders.

5 files changed, 293 insertions, 3 deletions

diff --git a/src/gallium/drivers/r300/Makefile b/src/gallium/drivers/r300/Makefile
index 0e4e115532..9330c286d2 100644
--- a/src/gallium/drivers/r300/Makefile
+++ b/src/gallium/drivers/r300/Makefile
@@ -16,6 +16,7 @@ C_SOURCES = \
 	r300_state_derived.c \
 	r300_state_invariant.c \
 	r300_state_shader.c \
+	r300_state_tcl.c \
 	r300_surface.c \
 	r300_swtcl_emit.c \
 	r300_texture.c
diff --git a/src/gallium/drivers/r300/r300_context.h b/src/gallium/drivers/r300/r300_context.h
index ed6480bea7..0ca445c091 100644
--- a/src/gallium/drivers/r300/r300_context.h
+++ b/src/gallium/drivers/r300/r300_context.h
@@ -231,6 +231,26 @@ struct r300_vertex_format {
     int tab[16];
 };
 
+struct r300_vertex_shader {
+    /* Parent class */
+    struct pipe_shader_state state;
+    struct tgsi_shader_info info;
+
+    /* Has this shader been translated yet? */
+    boolean translated;
+
+    /* Number of used instructions */
+    int instruction_count;
+
+    /* Machine instructions */
+    struct {
+        uint32_t inst0;
+        uint32_t inst1;
+        uint32_t inst2;
+        uint32_t inst3;
+    } instructions[128]; /*< XXX magic number */
+};
+
 struct r300_context {
     /* Parent class */
     struct pipe_context context;
@@ -270,6 +290,8 @@ struct r300_context {
     int vertex_buffer_count;
     /* Vertex information. */
     struct r300_vertex_format vertex_info;
+    /* Vertex shader. */
+    struct r300_vertex_shader* vs;
     /* Viewport state. */
     struct r300_viewport_state* viewport_state;
     /* Bitmask of dirty state objects. */
diff --git a/src/gallium/drivers/r300/r300_state_shader.c b/src/gallium/drivers/r300/r300_state_shader.c
index 5dc7266f9b..1b02239ee7 100644
--- a/src/gallium/drivers/r300/r300_state_shader.c
+++ b/src/gallium/drivers/r300/r300_state_shader.c
@@ -623,15 +623,14 @@ void r300_translate_fragment_shader(struct r300_context* r300,
                 }
                 break;
         }
-
     }
 
-    debug_printf("r300: %d texs and %d colors, first free reg is %d\n",
+    debug_printf("r300: fs: %d texs and %d colors, first free reg is %d\n",
             assembler->tex_count, assembler->color_count,
             assembler->tex_count + assembler->color_count);
 
     consts->count = consts->user_count + assembler->imm_count;
-    debug_printf("r300: %d total constants, "
+    debug_printf("r300: fs: %d total constants, "
             "%d from user and %d from immediates\n", consts->count,
             consts->user_count, assembler->imm_count);
     r300_fs_finalize(fs, assembler);
diff --git a/src/gallium/drivers/r300/r300_state_tcl.c b/src/gallium/drivers/r300/r300_state_tcl.c
new file mode 100644
index 0000000000..ddf43604b9
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_state_tcl.c
@@ -0,0 +1,196 @@
+/*
+ * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
+ *
+ * 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
+ * on 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
+ * THE AUTHOR(S) AND/OR THEIR 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. */
+
+#include "r300_state_tcl.h"
+
+static void r300_vs_declare(struct r300_vs_asm* assembler,
+                            struct tgsi_full_declaration* decl)
+{
+    switch (decl->Declaration.File) {
+        case TGSI_FILE_INPUT:
+            switch (decl->Semantic.SemanticName) {
+                case TGSI_SEMANTIC_COLOR:
+                    assembler->color_count++;
+                    break;
+                case TGSI_SEMANTIC_GENERIC:
+                    assembler->tex_count++;
+                    break;
+                default:
+                    debug_printf("r300: vs: Bad semantic declaration %d\n",
+                        decl->Semantic.SemanticName);
+                    break;
+            }
+            break;
+        case TGSI_FILE_OUTPUT:
+        case TGSI_FILE_CONSTANT:
+            break;
+        case TGSI_FILE_TEMPORARY:
+            assembler->temp_count++;
+            break;
+        default:
+            debug_printf("r300: vs: Bad file %d\n", decl->Declaration.File);
+            break;
+    }
+
+    assembler->temp_offset = assembler->color_count + assembler->tex_count;
+}
+
+static INLINE unsigned r300_vs_src(struct r300_vs_asm* assembler,
+                                   struct tgsi_src_register* src)
+{
+    switch (src->File) {
+        case TGSI_FILE_NULL:
+            return 0;
+        case TGSI_FILE_INPUT:
+            /* XXX may be wrong */
+            return src->Index;
+            break;
+        case TGSI_FILE_TEMPORARY:
+            return src->Index + assembler->temp_offset;
+            break;
+        case TGSI_FILE_IMMEDIATE:
+            return (src->Index + assembler->imm_offset) | (1 << 8);
+            break;
+        case TGSI_FILE_CONSTANT:
+            /* XXX magic */
+            return src->Index | (1 << 8);
+            break;
+        default:
+            debug_printf("r300: vs: Unimplemented src %d\n", src->File);
+            break;
+    }
+    return 0;
+}
+
+static INLINE unsigned r300_vs_dst(struct r300_vs_asm* assembler,
+                                   struct tgsi_dst_register* dst)
+{
+    switch (dst->File) {
+        case TGSI_FILE_NULL:
+            /* This happens during KIL instructions. */
+            return 0;
+            break;
+        case TGSI_FILE_OUTPUT:
+            return 0;
+            break;
+        case TGSI_FILE_TEMPORARY:
+            return dst->Index + assembler->temp_offset;
+            break;
+        default:
+            debug_printf("r300: vs: Unimplemented dst %d\n", dst->File);
+            break;
+    }
+    return 0;
+}
+
+static void r300_vs_emit_inst(struct r300_vertex_shader* vs,
+                              struct r300_vs_asm* assembler,
+                              struct tgsi_full_src_register* src,
+                              struct tgsi_full_dst_register* dst)
+{
+    int i = vs->instruction_count;
+    vs->instructions[i].inst0 = R300_PVS_DST_OPCODE(R300_VE_ADD) |
+        R300_PVS_DST_REG_TYPE(R300_PVS_DST_REG_OUT) |
+        R300_PVS_DST_OFFSET(dst->DstRegister.Index);
+}
+
+static void r300_vs_instruction(struct r300_vertex_shader* vs,
+                                struct r300_vs_asm* assembler,
+                                struct tgsi_full_instruction* inst)
+{
+    switch (inst->Instruction.Opcode) {
+        case TGSI_OPCODE_MOV:
+            r300_vs_emit_inst(vs, assembler, inst->FullSrcRegisters,
+                    &inst->FullDstRegisters[0]);
+            break;
+        case TGSI_OPCODE_END:
+            break;
+        default:
+            debug_printf("r300: vs: Bad opcode %d\n",
+                    inst->Instruction.Opcode);
+            break;
+    }
+}
+
+void r300_translate_vertex_shader(struct r300_context* r300,
+                                  struct r300_vertex_shader* vs)
+{
+    struct tgsi_parse_context parser;
+    int i;
+    struct r300_constant_buffer* consts =
+        &r300->shader_constants[PIPE_SHADER_VERTEX];
+
+    struct r300_vs_asm* assembler = CALLOC_STRUCT(r300_vs_asm);
+    if (assembler == NULL) {
+        return;
+    }
+    /* Setup starting offset for immediates. */
+    assembler->imm_offset = consts->user_count;
+
+    tgsi_parse_init(&parser, vs->state.tokens);
+
+    while (!tgsi_parse_end_of_tokens(&parser)) {
+        tgsi_parse_token(&parser);
+
+        /* This is seriously the lamest way to create fragment programs ever.
+         * I blame TGSI. */
+        switch (parser.FullToken.Token.Type) {
+            case TGSI_TOKEN_TYPE_DECLARATION:
+                /* Allocated registers sitting at the beginning
+                 * of the program. */
+                r300_vs_declare(assembler, &parser.FullToken.FullDeclaration);
+                break;
+            case TGSI_TOKEN_TYPE_IMMEDIATE:
+                debug_printf("r300: Emitting immediate to constant buffer, "
+                        "position %d\n",
+                        assembler->imm_offset + assembler->imm_count);
+                /* I am not amused by the length of these. */
+                for (i = 0; i < 4; i++) {
+                    consts->constants[assembler->imm_offset +
+                        assembler->imm_count][i] =
+                        parser.FullToken.FullImmediate.u.ImmediateFloat32[i]
+                        .Float;
+                }
+                assembler->imm_count++;
+                break;
+            case TGSI_TOKEN_TYPE_INSTRUCTION:
+                r300_vs_instruction(vs, assembler,
+                        &parser.FullToken.FullInstruction);
+                break;
+        }
+    }
+
+    debug_printf("r300: vs: %d texs and %d colors, first free reg is %d\n",
+            assembler->tex_count, assembler->color_count,
+            assembler->tex_count + assembler->color_count);
+
+    consts->count = consts->user_count + assembler->imm_count;
+    debug_printf("r300: vs: %d total constants, "
+            "%d from user and %d from immediates\n", consts->count,
+            consts->user_count, assembler->imm_count);
+
+    tgsi_dump(vs->state.tokens);
+    /* XXX finish r300 vertex shader dumper */
+
+    tgsi_parse_free(&parser);
+    FREE(assembler);
+}
diff --git a/src/gallium/drivers/r300/r300_state_tcl.h b/src/gallium/drivers/r300/r300_state_tcl.h
new file mode 100644
index 0000000000..54900cc191
--- /dev/null
+++ b/src/gallium/drivers/r300/r300_state_tcl.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
+ *
+ * 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
+ * on 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
+ * THE AUTHOR(S) AND/OR THEIR 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. */
+
+#ifndef R300_STATE_TCL_H
+#define R300_STATE_TCL_H
+
+#include "tgsi/tgsi_parse.h"
+
+#include "r300_context.h"
+#include "r300_debug.h"
+#include "r300_reg.h"
+#include "r300_screen.h"
+
+/* XXX get these to r300_reg */
+#define R300_PVS_DST_OPCODE(x)   ((x) << 0)
+#   define R300_VE_ADD                    3
+#define R300_PVS_DST_REG_TYPE(x) ((x) << 8)
+#   define R300_PVS_DST_REG_TEMPORARY     0
+#   define R300_PVS_DST_REG_A0            1
+#   define R300_PVS_DST_REG_OUT           2
+#   define R300_PVS_DST_REG_OUT_REPL_X    3
+#   define R300_PVS_DST_REG_ALT_TEMPORARY 4
+#   define R300_PVS_DST_REG_INPUT         5
+#define R300_PVS_DST_OFFSET(x)   ((x) << 13)
+#define R300_PVS_DST_WE_SHIFT    20
+
+/* Temporary struct used to hold assembly state while putting together
+ * fragment programs. */
+struct r300_vs_asm {
+    /* Pipe context. */
+    struct r300_context* r300;
+    /* Number of colors. */
+    unsigned color_count;
+    /* Number of texcoords. */
+    unsigned tex_count;
+    /* Offset for temporary registers. Inputs and temporaries have no
+     * distinguishing markings, so inputs start at 0 and the first usable
+     * temporary register is after all inputs. */
+    unsigned temp_offset;
+    /* Number of requested temporary registers. */
+    unsigned temp_count;
+    /* Offset for immediate constants. Neither R300 nor R500 can do four
+     * inline constants per source, so instead we copy immediates into the
+     * constant buffer. */
+    unsigned imm_offset;
+    /* Number of immediate constants. */
+    unsigned imm_count;
+};
+
+void r300_translate_vertex_shader(struct r300_context* r300,
+                                  struct r300_vertex_shader* vs);
+
+#endif /* R300_STATE_TCL_H */