Refactor set_mvp code a bit

gfx/drivers_shader/shader_gl_cg.c

@@ -253,14 +253,18 @@ static void gl_cg_reset_attrib(void *data)
    cg->attribs_index = 0;
 }
 
-static bool gl_cg_set_mvp(void *data, void *shader_data, const math_matrix_4x4 *mat)
+static bool gl_cg_set_mvp(void *data, void *shader_data,
+      const void *mat_data)
 {
    cg_shader_data_t *cg = (cg_shader_data_t*)shader_data;
-   if (!cg || !cg->prg[cg->active_idx].mvp)
-      return false;
+   if (cg && cg->prg[cg->active_idx].mvp)
+   {
+      const math_matrix_4x4 *mat = (const math_matrix_4x4*)mat_data;
+      cgGLSetMatrixParameterfc(cg->prg[cg->active_idx].mvp, mat->data);
+      return true;
+   }
 
-   cgGLSetMatrixParameterfc(cg->prg[cg->active_idx].mvp, mat->data);
-   return true;
+   return false;
 }
 
 static bool gl_cg_set_coords(void *handle_data, void *shader_data, const struct video_coords *coords)

gfx/drivers_shader/shader_glsl.c

@@ -1434,10 +1434,10 @@ static void gl_glsl_set_params(void *data, void *shader_data,
    }
 }
 
-static bool gl_glsl_set_mvp(void *data, void *shader_data, const math_matrix_4x4 *mat)
+static bool gl_glsl_set_mvp(void *data, void *shader_data, const void *mat_data)
 {
    int loc;
-   glsl_shader_data_t *glsl = (glsl_shader_data_t*)shader_data;
+   glsl_shader_data_t *glsl   = (glsl_shader_data_t*)shader_data;
 
    (void)data;
 
@@ -1447,6 +1447,8 @@ static bool gl_glsl_set_mvp(void *data, void *shader_data, const math_matrix_4x4
    loc = glsl->uniforms[glsl->active_idx].mvp;
    if (loc >= 0)
    {
+      const math_matrix_4x4 *mat = (const math_matrix_4x4*)mat_data;
+
       if (  (glsl->current_idx != glsl->active_idx) || 
             (mat->data  != glsl->current_mat_data_pointer[glsl->active_idx]) || 
             (*mat->data != glsl->current_mat_data[glsl->active_idx]))

gfx/drivers_shader/shader_hlsl.c

@@ -497,11 +497,12 @@ static void hlsl_shader_scale(void *data, unsigned idx, struct gfx_fbo_scale *sc
       scale->valid = false;
 }
 
-static bool hlsl_set_mvp(void *data, void *shader_data, const math_matrix_4x4 *mat)
+static bool hlsl_set_mvp(void *data, void *shader_data, const void *mat_data)
 {
    d3d_video_t *d3d                = (d3d_video_t*)data;
    LPDIRECT3DDEVICE d3dr           = (LPDIRECT3DDEVICE)d3d->dev;
    hlsl_shader_data_t *hlsl_data   = (hlsl_shader_data_t*)shader_data;
+   const math_matrix_4x4 *mat      = (const math_matrix_4x4*)mat_data;
 
    if(hlsl_data && hlsl_data->prg[hlsl_data->active_idx].mvp)
    {

gfx/video_driver.c

@@ -127,7 +127,7 @@ typedef struct video_pixel_scaler
 static void (*video_driver_cb_shader_use)(void *data,
       void *shader_data, unsigned index, bool set_active);
 static bool (*video_driver_cb_shader_set_mvp)(void *data,
-      void *shader_data, const math_matrix_4x4 *mat);
+      void *shader_data, const void *mat_data);
 bool (*video_driver_cb_has_focus)(void);
 
 /* Opaque handles to currently running window.
@@ -3237,7 +3237,7 @@ static enum gfx_wrap_type video_shader_driver_wrap_type_null(
 }
 
 static bool video_shader_driver_set_mvp_null(void *data,
-      void *shader_data, const math_matrix_4x4 *mat)
+      void *shader_data, const void *mat_data)
 {
    return false;
 }
@@ -3245,9 +3245,10 @@ static bool video_shader_driver_set_mvp_null(void *data,
 #ifdef HAVE_OPENGL
 #ifndef NO_GL_FF_MATRIX
 static bool video_shader_driver_set_mvp_null_gl(void *data,
-      void *shader_data, const math_matrix_4x4 *mat)
+      void *shader_data, const void *mat_data)
 {
    math_matrix_4x4 ident;
+   const math_matrix_4x4 *mat = (const math_matrix_4x4*)mat_data;
 
    /* Fall back to fixed function-style if needed and possible. */
    glMatrixMode(GL_PROJECTION);

gfx/video_driver.h

@@ -234,7 +234,7 @@ typedef struct shader_backend
    bool (*set_coords)(void *handle_data,
          void *shader_data, const struct video_coords *coords);
    bool (*set_mvp)(void *data, void *shader_data,
-         const math_matrix_4x4 *mat);
+         const void *mat_data);
    unsigned (*get_prev_textures)(void *data);
    bool (*get_feedback_pass)(void *data, unsigned *pass);
    bool (*mipmap_input)(void *data, unsigned index);
@@ -471,7 +471,7 @@ typedef struct video_frame_info
          void *shader_data, const struct video_coords *coords);
 #endif
    bool (*cb_shader_set_mvp)(void *data, void *shader_data,
-         const math_matrix_4x4 *mat);
+         const void *mat_data);
 
    void *context_data;
    void *shader_data;