1 files changed, 207 insertions, 0 deletions
diff --git a/src/video_core/renderer_opengl/gl_rasterizer.h b/src/video_core/renderer_opengl/gl_rasterizer.h
new file mode 100644
index 00000000..9896f8d0
--- /dev/null
+++ b/src/video_core/renderer_opengl/gl_rasterizer.h
@@ -0,0 +1,207 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "video_core/hwrasterizer_base.h"
+
+#include "gl_state.h"
+#include "gl_rasterizer_cache.h"
+
+class RasterizerOpenGL : public HWRasterizer {
+public:
+
+    RasterizerOpenGL();
+    ~RasterizerOpenGL() override;
+
+    /// Initialize API-specific GPU objects
+    void InitObjects() override;
+
+    /// Reset the rasterizer, such as flushing all caches and updating all state
+    void Reset() override;
+
+    /// Queues the primitive formed by the given vertices for rendering
+    void AddTriangle(const Pica::VertexShader::OutputVertex& v0,
+                     const Pica::VertexShader::OutputVertex& v1,
+                     const Pica::VertexShader::OutputVertex& v2) override;
+
+    /// Draw the current batch of triangles
+    void DrawTriangles() override;
+
+    /// Commit the rasterizer's framebuffer contents immediately to the current 3DS memory framebuffer
+    void CommitFramebuffer() override;
+
+    /// Notify rasterizer that the specified PICA register has been changed
+    void NotifyPicaRegisterChanged(u32 id) override;
+
+    /// Notify rasterizer that the specified 3DS memory region will be read from after this notification
+    void NotifyPreRead(PAddr addr, u32 size) override;
+
+    /// Notify rasterizer that a 3DS memory region has been changed
+    void NotifyFlush(PAddr addr, u32 size) override;
+
+private:
+    /// Structure used for managing texture environment states
+    struct TEVConfigUniforms {
+        GLuint enabled;
+        GLuint color_sources;
+        GLuint alpha_sources;
+        GLuint color_modifiers;
+        GLuint alpha_modifiers;
+        GLuint color_alpha_op;
+        GLuint color_alpha_multiplier;
+        GLuint const_color;
+        GLuint updates_combiner_buffer_color_alpha;
+    };
+
+    /// Structure used for storing information about color textures
+    struct TextureInfo {
+        OGLTexture texture;
+        GLsizei width;
+        GLsizei height;
+        Pica::Regs::ColorFormat format;
+        GLenum gl_format;
+        GLenum gl_type;
+    };
+
+    /// Structure used for storing information about depth textures
+    struct DepthTextureInfo {
+        OGLTexture texture;
+        GLsizei width;
+        GLsizei height;
+        Pica::Regs::DepthFormat format;
+        GLenum gl_format;
+        GLenum gl_type;
+    };
+
+    /// Structure that the hardware rendered vertices are composed of
+    struct HardwareVertex {
+        HardwareVertex(const Pica::VertexShader::OutputVertex& v) {
+            position[0] = v.pos.x.ToFloat32();
+            position[1] = v.pos.y.ToFloat32();
+            position[2] = v.pos.z.ToFloat32();
+            position[3] = v.pos.w.ToFloat32();
+            color[0] = v.color.x.ToFloat32();
+            color[1] = v.color.y.ToFloat32();
+            color[2] = v.color.z.ToFloat32();
+            color[3] = v.color.w.ToFloat32();
+            tex_coord0[0] = v.tc0.x.ToFloat32();
+            tex_coord0[1] = v.tc0.y.ToFloat32();
+            tex_coord1[0] = v.tc1.x.ToFloat32();
+            tex_coord1[1] = v.tc1.y.ToFloat32();
+            tex_coord2[0] = v.tc2.x.ToFloat32();
+            tex_coord2[1] = v.tc2.y.ToFloat32();
+        }
+
+        GLfloat position[4];
+        GLfloat color[4];
+        GLfloat tex_coord0[2];
+        GLfloat tex_coord1[2];
+        GLfloat tex_coord2[2];
+    };
+
+    /// Reconfigure the OpenGL color texture to use the given format and dimensions
+    void ReconfigureColorTexture(TextureInfo& texture, Pica::Regs::ColorFormat format, u32 width, u32 height);
+
+    /// Reconfigure the OpenGL depth texture to use the given format and dimensions
+    void ReconfigureDepthTexture(DepthTextureInfo& texture, Pica::Regs::DepthFormat format, u32 width, u32 height);
+
+    /// Syncs the state and contents of the OpenGL framebuffer to match the current PICA framebuffer
+    void SyncFramebuffer();
+
+    /// Syncs the cull mode to match the PICA register
+    void SyncCullMode();
+
+    /// Syncs the blend enabled status to match the PICA register
+    void SyncBlendEnabled();
+
+    /// Syncs the blend functions to match the PICA register
+    void SyncBlendFuncs();
+
+    /// Syncs the blend color to match the PICA register
+    void SyncBlendColor();
+
+    /// Syncs the alpha test states to match the PICA register
+    void SyncAlphaTest();
+
+    /// Syncs the stencil test states to match the PICA register
+    void SyncStencilTest();
+
+    /// Syncs the depth test states to match the PICA register
+    void SyncDepthTest();
+
+    /// Syncs the specified TEV stage's color and alpha sources to match the PICA register
+    void SyncTevSources(unsigned stage_index, const Pica::Regs::TevStageConfig& config);
+
+    /// Syncs the specified TEV stage's color and alpha modifiers to match the PICA register
+    void SyncTevModifiers(unsigned stage_index, const Pica::Regs::TevStageConfig& config);
+
+    /// Syncs the specified TEV stage's color and alpha combiner operations to match the PICA register
+    void SyncTevOps(unsigned stage_index, const Pica::Regs::TevStageConfig& config);
+
+    /// Syncs the specified TEV stage's constant color to match the PICA register
+    void SyncTevColor(unsigned stage_index, const Pica::Regs::TevStageConfig& config);
+
+    /// Syncs the specified TEV stage's color and alpha multipliers to match the PICA register
+    void SyncTevMultipliers(unsigned stage_index, const Pica::Regs::TevStageConfig& config);
+
+    /// Syncs the TEV combiner color buffer to match the PICA register
+    void SyncCombinerColor();
+
+    /// Syncs the TEV combiner write flags to match the PICA register
+    void SyncCombinerWriteFlags();
+
+    /// Syncs the remaining OpenGL drawing state to match the current PICA state
+    void SyncDrawState();
+
+    /// Copies the 3DS color framebuffer into the OpenGL color framebuffer texture
+    void ReloadColorBuffer();
+
+    /// Copies the 3DS depth framebuffer into the OpenGL depth framebuffer texture
+    void ReloadDepthBuffer();
+
+    /**
+     * Save the current OpenGL color framebuffer to the current PICA framebuffer in 3DS memory
+     * Loads the OpenGL framebuffer textures into temporary buffers
+     * Then copies into the 3DS framebuffer using proper Morton order
+     */
+    void CommitColorBuffer();
+
+    /**
+     * Save the current OpenGL depth framebuffer to the current PICA framebuffer in 3DS memory
+     * Loads the OpenGL framebuffer textures into temporary buffers
+     * Then copies into the 3DS framebuffer using proper Morton order
+     */
+    void CommitDepthBuffer();
+
+    RasterizerCacheOpenGL res_cache;
+
+    std::vector<HardwareVertex> vertex_batch;
+
+    OpenGLState state;
+
+    PAddr last_fb_color_addr;
+    PAddr last_fb_depth_addr;
+
+    // Hardware rasterizer
+    TextureInfo fb_color_texture;
+    DepthTextureInfo fb_depth_texture;
+    OGLShader shader;
+    OGLVertexArray vertex_array;
+    OGLBuffer vertex_buffer;
+    OGLFramebuffer framebuffer;
+
+    // Hardware vertex shader
+    GLuint attrib_position;
+    GLuint attrib_color;
+    GLuint attrib_texcoords;
+
+    // Hardware fragment shader
+    GLuint uniform_alphatest_enabled;
+    GLuint uniform_alphatest_func;
+    GLuint uniform_alphatest_ref;
+    GLuint uniform_tex;
+    GLuint uniform_tev_combiner_buffer_color;
+    TEVConfigUniforms uniform_tev_cfgs[6];
+};