GPU: Added registers for min and mag texture filters and implemented them in the hw renderer.

2 files changed, 29 insertions, 3 deletions

diff --git a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
index 2e4110a8..0e4f8e1e 100644
--- a/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
+++ b/src/video_core/renderer_opengl/gl_rasterizer_cache.cpp
@@ -31,9 +31,8 @@ void RasterizerCacheOpenGL::LoadAndBindTexture(OpenGLState &state, unsigned text
         state.texture_units[texture_unit].texture_2d = new_texture->texture.handle;
         state.Apply();
 
-        // TODO: Need to choose filters that correspond to PICA once register is declared
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, PicaToGL::TextureFilterMode(config.config.mag_filter));
+        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, PicaToGL::TextureFilterMode(config.config.min_filter));
 
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, PicaToGL::WrapMode(config.config.wrap_s));
         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, PicaToGL::WrapMode(config.config.wrap_t));
diff --git a/src/video_core/renderer_opengl/pica_to_gl.h b/src/video_core/renderer_opengl/pica_to_gl.h
index 73f63c55..3b562da8 100644
--- a/src/video_core/renderer_opengl/pica_to_gl.h
+++ b/src/video_core/renderer_opengl/pica_to_gl.h
@@ -12,6 +12,33 @@
 
 namespace PicaToGL {
 
+inline GLenum TextureFilterMode(Pica::Regs::TextureConfig::TextureFilter mode) {
+    static const GLenum filter_mode_table[] = {
+        GL_NEAREST,  // TextureFilter::Nearest
+        GL_LINEAR    // TextureFilter::Linear
+    };
+
+    // Range check table for input
+    if (mode >= ARRAY_SIZE(filter_mode_table)) {
+        LOG_CRITICAL(Render_OpenGL, "Unknown texture filtering mode %d", mode);
+        UNREACHABLE();
+
+        return GL_LINEAR;
+    }
+
+    GLenum gl_mode = filter_mode_table[mode];
+
+    // Check for dummy values indicating an unknown mode
+    if (gl_mode == 0) {
+        LOG_CRITICAL(Render_OpenGL, "Unknown texture filtering mode %d", mode);
+        UNIMPLEMENTED();
+
+        return GL_LINEAR;
+    }
+
+    return gl_mode;
+}
+
 inline GLenum WrapMode(Pica::Regs::TextureConfig::WrapMode mode) {
     static const GLenum wrap_mode_table[] = {
         GL_CLAMP_TO_EDGE,  // WrapMode::ClampToEdge