gl: more animation checks

[d2df-sdl.git] / src / game / renders / opengl / r_draw.pas

diff --git a/src/game/renders/opengl/r_draw.pas b/src/game/renders/opengl/r_draw.pas
index c839936087a0754aa00405d235b32c67087422a3..324d0a2d27be2038802edc1fb9dec6f723e9fcd5 100644 (file)
--- a/src/game/renders/opengl/r_draw.pas
+++ b/src/game/renders/opengl/r_draw.pas
@@ -37,7 +37,7 @@ interface
   procedure r_Draw_Text (const text: AnsiString; x, y: Integer; r, g, b, a: Byte; f: TGLFont);
   procedure r_Draw_GetTextSize (const text: AnsiString; f: TGLFont; out w, h: Integer);
 
-  procedure r_Draw_Setup (w, h: Integer);
+  procedure r_Draw_Setup (sw, sh, gw, gh: Integer);
   procedure r_Draw_SetRect (l, t, r, b: Integer);
   procedure r_Draw_GetRect (out l, t, r, b: Integer);
 
@@ -47,11 +47,7 @@ interface
 implementation
 
   uses
-    {$IFDEF USE_GLES1}
-      GLES11,
-    {$ELSE}
-      GL, GLEXT,
-    {$ENDIF}
+    {$I ../../../nogl/noGLuses.inc}
     SysUtils, Classes, Math,
     e_log, utils
   ;
@@ -65,6 +61,7 @@ implementation
   var
     sl, st, sr, sb: Integer;
     ScreenWidth, ScreenHeight: Integer;
+    GameWidth, GameHeight: Integer;
 
     enableTexture2D: Boolean;
     curR, curG, curB, curA: Byte;
@@ -90,21 +87,23 @@ implementation
     end;
   end;
 
-  procedure r_Draw_Setup (w, h: Integer);
+  procedure r_Draw_Setup (sw, sh, gw, gh: Integer);
   begin
-    ASSERT(w >= 0);
-    ASSERT(h >= 0);
-    ScreenWidth := w;
-    ScreenHeight := h;
-    glScissor(0, 0, w, h);
-    glViewport(0, 0, w, h);
+    ASSERT((sw >= 0) and (sh >= 0)); // screen/window size
+    ASSERT((gw >= 0) and (gh >= 0)); // virtual screen size
+    ScreenWidth := sw;
+    ScreenHeight := sh;
+    GameWidth := gw;
+    GameHeight := gh;
+    glScissor(0, 0, sw, sh);
+    glViewport(0, 0, sw, sh);
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity;
-    glOrtho(0, w, h, 0, 0, 1);
+    glOrtho(0, gw, gh, 0, 0, 1);
     glMatrixMode(GL_MODELVIEW);
     glLoadIdentity;
     glEnable(GL_SCISSOR_TEST);
-    r_Draw_SetRect(0, 0, w - 1, h - 1);
+    r_Draw_SetRect(0, 0, gw - 1, gh - 1);
   end;
 
   procedure DrawQuad (x, y, w, h: Integer);
@@ -284,86 +283,96 @@ implementation
       r_Draw_MultiTextureRepeat(m, anim, backanim, x, y, w, h, flip, r, g, b, a, blend);
   end;
 
-  procedure r_Draw_Filter (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
+  procedure r_Draw_Rect (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
   begin
-    ASSERT(r >= l);
-    ASSERT(b >= t);
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_ZERO, GL_SRC_COLOR);
-    r_Draw_EnableTexture2D(false);
-    r_Draw_SetColor(rr, gg, bb, aa);
-    glBegin(GL_QUADS);
-      glVertex2i(l, t);
-      glVertex2i(r, t);
-      glVertex2i(r, b);
-      glVertex2i(l, b);
-    glEnd;
+    ASSERT(l <= r);
+    ASSERT(t <= b);
+    if (l < r) and (t < b) then
+    begin
+      glEnable(GL_BLEND);
+      glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+      r_Draw_EnableTexture2D(false);
+      r_Draw_SetColor(rr, gg, bb, aa);
+      glBegin(GL_QUADS);
+        (* top *)
+        glVertex2i(l, t);
+        glVertex2i(r, t);
+        glVertex2i(r, t+1);
+        glVertex2i(l, t+1);
+        (* bottom *)
+        glVertex2i(l, b-1);
+        glVertex2i(r, b-1);
+        glVertex2i(r, b);
+        glVertex2i(l, b);
+        (* left *)
+        glVertex2i(l,   t+1);
+        glVertex2i(l+1, t+1);
+        glVertex2i(l+1, b-1);
+        glVertex2i(l,   b-1);
+        (* right *)
+        glVertex2i(r-1, t+1);
+        glVertex2i(r,   t+1);
+        glVertex2i(r,   b-1);
+        glVertex2i(r-1, b-1);
+      glEnd;
+    end;
   end;
 
-  procedure r_Draw_Rect (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
+  procedure r_Draw_FillRect (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
   begin
-    ASSERT(r >= l);
-    ASSERT(b >= t);
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-    r_Draw_EnableTexture2D(false);
-    r_Draw_SetColor(rr, gg, bb, aa);
-    glBegin(GL_LINE_LOOP);
-{
-      glVertex2i(l, t);
-      glVertex2i(r, t);
-      glVertex2i(r, b);
-      glVertex2i(l, b);
-}
-      glVertex2f(l + 0.5, t + 0.5);
-      glVertex2f(r - 0.5, t + 0.5);
-      glVertex2f(r - 0.5, b - 0.5);
-      glVertex2f(l + 0.5, b - 0.5);
-    glEnd;
+    ASSERT(l <= r);
+    ASSERT(t <= b);
+    if (l < r) and (t < b) then
+    begin
+      glEnable(GL_BLEND);
+      glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+      r_Draw_EnableTexture2D(false);
+      r_Draw_SetColor(rr, gg, bb, aa);
+      glBegin(GL_QUADS);
+        glVertex2i(l, t);
+        glVertex2i(r, t);
+        glVertex2i(r, b);
+        glVertex2i(l, b);
+      glEnd;
+    end;
   end;
 
-  procedure r_Draw_FillRect (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
+  procedure r_Draw_Filter (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
   begin
-    ASSERT(r >= l);
-    ASSERT(b >= t);
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-    r_Draw_EnableTexture2D(false);
-    r_Draw_SetColor(rr, gg, bb, aa);
-    glBegin(GL_QUADS);
-{
-      glVertex2i(l, t);
-      glVertex2i(r, t);
-      glVertex2i(r, b);
-      glVertex2i(l, b);
-}
-{
-      glVertex2f(l + 0.5, t + 0.5);
-      glVertex2f(r - 0.5, t + 0.5);
-      glVertex2f(r - 0.5, b - 0.5);
-      glVertex2f(l + 0.5, b - 0.5);
-}
-      glVertex2f(l + 0, t + 0);
-      glVertex2f(r + 0.75, t + 0);
-      glVertex2f(r + 0.75, b + 0.75);
-      glVertex2f(l + 0, b + 0.75);
-    glEnd;
+    ASSERT(l <= r);
+    ASSERT(t <= b);
+    if (l < r) and (t < b) then
+    begin
+      glEnable(GL_BLEND);
+      glBlendFunc(GL_ZERO, GL_SRC_COLOR);
+      r_Draw_EnableTexture2D(false);
+      r_Draw_SetColor(rr, gg, bb, aa);
+      glBegin(GL_QUADS);
+        glVertex2i(l, t);
+        glVertex2i(r, t);
+        glVertex2i(r, b);
+        glVertex2i(l, b);
+      glEnd;
+    end;
   end;
 
   procedure r_Draw_InvertRect (l, t, r, b: Integer; rr, gg, bb, aa: Byte);
   begin
-    ASSERT(r >= l);
-    ASSERT(b >= t);
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
-    r_Draw_EnableTexture2D(false);
-    r_Draw_SetColor(rr, gg, bb, aa);
-    glBegin(GL_QUADS);
-      glVertex2i(l, t);
-      glVertex2i(r, t);
-      glVertex2i(r, b);
-      glVertex2i(l, b);
-    glEnd;
+    ASSERT(l <= r);
+    ASSERT(t <= b);
+    if (l < r) and (t < b) then
+    begin
+      glEnable(GL_BLEND);
+      glBlendFunc(GL_ONE_MINUS_DST_COLOR, GL_ZERO);
+      r_Draw_EnableTexture2D(false);
+      r_Draw_SetColor(rr, gg, bb, aa);
+      glBegin(GL_QUADS);
+        glVertex2i(l, t);
+        glVertex2i(r, t);
+        glVertex2i(r, b);
+        glVertex2i(l, b);
+      glEnd;
+    end;
   end;
 
   procedure r_Draw_Text (const text: AnsiString; x, y: Integer; r, g, b, a: Byte; f: TGLFont);
@@ -396,13 +405,15 @@ implementation
   end;
 
   procedure r_Draw_SetRect (l, t, r, b: Integer);
-    var w, h: Integer;
+    var x, y, w, h: Integer;
   begin
     ASSERT(l <= r);
     ASSERT(t <= b);
-    w := r - l + 1;
-    h := b - t + 1;
-    glScissor(l, ScreenHeight - h - t, w, h);
+    x := l * ScreenWidth div GameWidth;
+    y := t * ScreenHeight div GameHeight;
+    w := (r - l + 1) * ScreenWidth div GameWidth;
+    h := (b - t + 1) * ScreenHeight div GameHeight;
+    glScissor(x, ScreenHeight - h - y, w, h);
     sl := l; st := t; sr := r; sb := b;
   end;