X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=fishladder_resources.h;h=00cb199a780b3334f02ed0eb9201c46fc7939d0a;hb=a665a5167b297dfcf4a6d2dc5bf9f0368ae5ee23;hp=1f8c5454da860017005ac429a71fd2353df94cb3;hpb=026b67150e9bd238709a6aeab656f7d01f3765a8;p=fishladder.git

diff --git a/fishladder_resources.h b/fishladder_resources.h
index 1f8c545..00cb199 100644
--- a/fishladder_resources.h
+++ b/fishladder_resources.h
@@ -5,8 +5,9 @@ vg_tex2d tex_tile_data = 	{ .path = "textures/tileset.png" };
 vg_tex2d tex_tile_detail = { .path = "textures/tile_overlays.png" };
 vg_tex2d tex_wood = 			{ .path = "textures/wood.png" };
 vg_tex2d tex_ball = 			{ .path = "textures/ball.png", .flags = VG_TEXTURE_CLAMP };
+vg_tex2d tex_background = 	{ .path = "textures/background.png" };
 
-vg_tex2d *texture_list[] = { &tex_tile_detail, &tex_tile_data, &tex_wood, &tex_ball };
+vg_tex2d *texture_list[] = { &tex_tile_detail, &tex_tile_data, &tex_wood, &tex_ball, &tex_background };
 
 // AUDIO
 // ===========================================================================================================
@@ -209,6 +210,7 @@ SHADER_DEFINE( shader_tile_main,
 	"uniform sampler2D uTexGlyphs;"
 	"uniform sampler2D uTexWood;"
 	"uniform float uGhost;"
+	"uniform float uForeground;"
 	"uniform vec2 uMousePos;"
 	"uniform vec4 uColour;"
 	""
@@ -225,7 +227,7 @@ SHADER_DEFINE( shader_tile_main,
 		
 		"vec3 shadows = mix( vec3( 0.85, 0.7344, 0.561 ), vec3(1.0,1.0,1.0), glyph.r );"
 		
-		"vec4 output_regular = vec4( wood_comp * shadows, glyph.b );"
+		"vec4 output_regular = vec4( wood_comp * shadows, mix( glyph.a, glyph.b, uForeground ) );"
 		
 		"float ghost_dist = clamp( 1.5 - distance(uMousePos, aWorldCoords), 0.0, 1.0 );"
 		"vec4 output_ghost = vec4( 1.0, 1.0, 1.0, glyph.g * ghost_dist );"
@@ -233,7 +235,46 @@ SHADER_DEFINE( shader_tile_main,
 		"FragColor = mix( output_regular, output_ghost, uGhost ) * uColour;"
 	"}"
 	,
-	UNIFORMS({ "uPv", "uOffset", "uTexGlyphs", "uTexWood", "uSubTransform", "uGhost", "uMousePos", "uColour" })
+	UNIFORMS({ "uPv", "uOffset", "uTexGlyphs", "uTexWood", "uSubTransform", "uGhost", "uMousePos", "uColour", "uForeground" })
+)
+
+SHADER_DEFINE( shader_background,
+	// VERTEX
+	"layout (location=0) in vec2 a_co;"
+	"uniform mat3 uPv;"
+	"uniform vec3 uOffset;"
+	""
+	"out vec2 aTexCoords;"
+	""
+	"void main()"
+	"{"
+		"vec2 world_pos = a_co * uOffset.z + uOffset.xy;"
+		"gl_Position = vec4( uPv * vec3( world_pos, 1.0 ), 1.0 );"
+		"aTexCoords = world_pos * 0.25;"
+	"}",
+	
+	// FRAGMENT
+	"out vec4 FragColor;"
+	""
+	"uniform sampler2D uTexMain;"
+	""
+	"in vec2 aTexCoords;"
+	""
+	"vec2 hash22(vec2 p)"
+	"{"
+		"vec3 p3 = fract(vec3(p.xyx) * vec3(.1031, .1030, .0973));"
+		"p3 += dot(p3, p3.yzx+33.33);"
+		"return fract((p3.xx+p3.yz)*p3.zy);"
+	"}"
+	""
+	"void main()"
+	"{"
+		"vec2 random_offset = floor( hash22( floor( aTexCoords * 4.0 ) ) * 4.0 ) * 0.25;"
+		"vec4 background = texture( uTexMain, aTexCoords );"
+		"FragColor = vec4( background.rgb * (1.0+random_offset.r*0.015), 1.0 );"
+	"}"
+	,
+	UNIFORMS({ "uPv", "uOffset", "uTexMain" })
 )
 
 void vg_register(void)
@@ -241,4 +282,5 @@ void vg_register(void)
 	SHADER_INIT( shader_tile_colour );
 	SHADER_INIT( shader_tile_main );
 	SHADER_INIT( shader_ball );
+	SHADER_INIT( shader_background );
 }