Initial refactoring of gpu/.

Runs too fast - now there are ringbuffer wrapping issues.

src/xenia/gpu/draw_command.h

@@ -0,0 +1,78 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2014 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GPU_DRAW_COMMAND_H_
+#define XENIA_GPU_DRAW_COMMAND_H_
+
+#include <xenia/core.h>
+#include <xenia/gpu/buffer_resource.h>
+#include <xenia/gpu/sampler_state_resource.h>
+#include <xenia/gpu/shader_resource.h>
+#include <xenia/gpu/texture_resource.h>
+#include <xenia/gpu/xenos/xenos.h>
+
+
+namespace xe {
+namespace gpu {
+
+
+// TODO(benvanik): move more of the enums in here?
+struct DrawCommand {
+  xenos::XE_GPU_PRIMITIVE_TYPE prim_type;
+  uint32_t start_index;
+  uint32_t index_count;
+  uint32_t base_vertex;
+
+  VertexShaderResource* vertex_shader;
+  PixelShaderResource* pixel_shader;
+
+  // TODO(benvanik): dirty tracking/max ranges/etc.
+  struct {
+    float* values;
+    size_t count;
+  } float4_constants;
+  struct {
+    uint32_t* values;
+    size_t count;
+  } loop_constants;
+  struct {
+    uint32_t* values;
+    size_t count;
+  } bool_constants;
+
+  // Index buffer, if present. If index_count > 0 then auto draw.
+  IndexBufferResource* index_buffer;
+
+  // Vertex buffers.
+  struct {
+    uint32_t input_index;
+    VertexBufferResource* buffer;
+    uint32_t stride;
+    uint32_t offset;
+  } vertex_buffers[96];
+  size_t vertex_buffer_count;
+
+  // Texture samplers.
+  struct SamplerInput {
+    uint32_t input_index;
+    TextureResource* texture;
+    SamplerStateResource* sampler_state;
+  };
+  SamplerInput vertex_shader_samplers[32];
+  size_t vertex_shader_sampler_count;
+  SamplerInput pixel_shader_samplers[32];
+  size_t pixel_shader_sampler_count;
+};
+
+
+}  // namespace gpu
+}  // namespace xe
+
+
+#endif  // XENIA_GPU_DRAW_COMMAND_H_