Actual 3D block icons

res/shaders/ui3d.glslv

@@ -6,9 +6,10 @@ out vec2 a_textureCoord;
 out vec4 a_color;
 
 uniform mat4 u_projview;
+uniform mat4 u_apply;
 
 void main(){
 	a_textureCoord = v_textureCoord;
 	a_color = v_color;
-	gl_Position = u_projview * vec4(v_position, 1.0);
+	gl_Position = u_apply * u_projview * vec4(v_position, 1.0);
 }

src/frontend/hud.cpp

@@ -15,6 +15,7 @@
 #include "../assets/Assets.h"
 #include "../graphics/Shader.h"
 #include "../graphics/Batch2D.h"
+#include "../graphics/Batch3D.h"
 #include "../graphics/Font.h"
 #include "../graphics/Atlas.h"
 #include "../graphics/Mesh.h"
@@ -36,6 +37,7 @@
 #include "ContentGfxCache.h"
 #include "screens.h"
 #include "WorldRenderer.h"
+#include "BlocksPreview.h"
 #include "../engine.h"
 #include "../core_defs.h"
 
@@ -58,11 +60,15 @@ HudRenderer::HudRenderer(Engine* engine,
 						  WorldRenderer* renderer) 
             : level(level), 
 			  assets(engine->getAssets()), 
+			  batch(new Batch2D(1024)),
 			  gui(engine->getGUI()),
 			  cache(cache),
 			  renderer(renderer) {
 	auto menu = gui->getMenu();
-	batch = new Batch2D(1024);
+	blocksPreview = new BlocksPreview(assets->getShader("ui3d"),
+									  assets->getAtlas("blocks"),
+									  cache);
+
 	uicamera = new Camera(vec3(), 1);
 	uicamera->perspective = false;
 	uicamera->flipped = true;
@@ -180,6 +186,7 @@ HudRenderer::HudRenderer(Engine* engine,
 
 HudRenderer::~HudRenderer() {
 	gui->remove(debugPanel);
+	delete blocksPreview;
 	delete batch;
 	delete uicamera;
 }
@@ -197,7 +204,7 @@ void HudRenderer::drawContentAccess(const GfxContext& ctx, Player* player) {
 
 	const Viewport& viewport = ctx.getViewport();
 	const uint width = viewport.getWidth();
-	Atlas* atlas = assets->getAtlas("blocks");
+	Shader* uiShader = assets->getShader("ui");
 
 	uint count = contentIds->countBlockDefs();
 	uint icon_size = 48;
@@ -221,9 +228,15 @@ void HudRenderer::drawContentAccess(const GfxContext& ctx, Player* player) {
 	batch->texture(nullptr);
 	batch->color = vec4(0.0f, 0.0f, 0.0f, 0.5f);
 	batch->rect(inv_x, inv_y, inv_w, inv_h);
+	batch->render();
 
 	// blocks & items
-	batch->texture(atlas->getTexture());
+	blocksPreview->begin();
+	{
+		Window::clearDepth();
+		GfxContext subctx = ctx.sub();
+		subctx.depthTest(true);
+		subctx.cullFace(true);
 		for (uint i = 0; i < count-1; i++) {
 			Block* cblock = contentIds->getBlockDef(i+1);
 			if (cblock == nullptr)
@@ -240,18 +253,10 @@ void HudRenderer::drawContentAccess(const GfxContext& ctx, Player* player) {
 			} else {
 				tint = vec4(1.0f);
 			}
-		drawBlockPreview(cblock, x, y, icon_size, icon_size, tint);
+			blocksPreview->draw(cblock, x, y, icon_size, tint);
 		}
-}
-
-void HudRenderer::drawBlockPreview(const Block* def, float x, float y, float w, float h, vec4 tint) {
-	if (def->model == BlockModel::block){
-		batch->blockSprite(x, y, w, h, &cache->getRegion(def->rt.id, 0), tint);
-	} else if (def->model == BlockModel::aabb) {
-		batch->blockSprite(x, y, w, h, &cache->getRegion(def->rt.id, 0), tint, def->hitbox.size());
-	} else if (def->model == BlockModel::xsprite){
-		batch->sprite(x, y, w, h, cache->getRegion(def->rt.id, 3), tint);
 	}
+	uiShader->use();
 }
 
 void HudRenderer::update() {
@@ -288,8 +293,6 @@ void HudRenderer::draw(const GfxContext& ctx){
 	const uint width = viewport.getWidth();
 	const uint height = viewport.getHeight();
 
-	Atlas* atlas = assets->getAtlas("blocks");
-
 	debugPanel->visible(level->player->debug);
 
 	uicamera->fov = height;
@@ -312,16 +315,25 @@ void HudRenderer::draw(const GfxContext& ctx){
 	Player* player = level->player;
 
 
-	batch->color = vec4(0.0f, 0.0f, 0.0f, 0.5f);
+	batch->color = vec4(0.0f, 0.0f, 0.0f, 0.75f);
 	batch->rect(width - 68, height - 68, 68, 68);
-
 	batch->color = vec4(1.0f);
-	batch->texture(atlas->getTexture());
+	batch->render();
+
+	blocksPreview->begin();
 	{
+		Window::clearDepth();
+		GfxContext subctx = ctx.sub();
+		subctx.depthTest(true);
+		subctx.cullFace(true);
+		
 		Block* cblock = contentIds->getBlockDef(player->choosenBlock);
 		assert(cblock != nullptr);
-		drawBlockPreview(cblock, width - 56, uicamera->fov - 56, 48, 48, vec4(1.0f));
+		blocksPreview->draw(cblock, width - 56, uicamera->fov - 56, 48, vec4(1.0f));
+		//drawBlockPreview(cblock, width - 56, uicamera->fov - 56, 48, 48, vec4(1.0f));
 	}
+	uishader->use();
+	batch->begin();
 
 	if (pause) {
 		batch->texture(nullptr);

src/frontend/hud.h

@@ -18,6 +18,7 @@ class Level;
 class Engine;
 class ContentGfxCache;
 class WorldRenderer;
+class BlocksPreview;
 
 namespace gui {
 	class GUI;
@@ -29,6 +30,7 @@ class HudRenderer {
     Assets* assets;
 	Batch2D* batch;
 	Camera* uicamera;
+	BlocksPreview* blocksPreview;
 
 	int fps = 60;
 	int fpsMin = 60;
@@ -42,7 +44,6 @@ class HudRenderer {
 	const ContentGfxCache* const cache;
 	WorldRenderer* renderer;
 
-	void drawBlockPreview(const Block* def, float x, float y, float w, float h, glm::vec4 tint);
 public:
 	HudRenderer(Engine* engine, 
 				Level* level, 

src/graphics/Batch3D.cpp

@@ -14,8 +14,7 @@ using glm::vec4;
 
 Batch3D::Batch3D(size_t capacity) 
 	: capacity(capacity), 
-	  offset(0), 
+	  offset(0) {
-	  color(1.0f, 1.0f, 1.0f, 1.0f) {
 	const vattr attrs[] = {
 		{3}, {2}, {4}, {0}
 	};
@@ -86,7 +85,7 @@ void Batch3D::face(const vec3& coord, float w, float h,
 	const UVRegion& region,
 	const vec4& tint) {
 	if (index + VERTEX_SIZE * 4 > capacity) {
-		render();
+		flush();
 	}
 	vertex(coord, region.u1, region.v1, 
 		   tint.r, tint.g, tint.b, tint.a);
@@ -106,7 +105,7 @@ void Batch3D::face(const vec3& coord, float w, float h,
 void Batch3D::texture(Texture* new_texture){
 	if (_texture == new_texture)
 		return;
-	render();
+	flush();
 	_texture = new_texture;
 	if (new_texture == nullptr)
 		blank->bind();
@@ -114,48 +113,49 @@ void Batch3D::texture(Texture* new_texture){
 		new_texture->bind();
 }
 
-void Batch3D::sprite(vec3 pos, vec3 up, vec3 right, float w, float h){
+void Batch3D::sprite(vec3 pos, vec3 up, vec3 right, float w, float h, const UVRegion& uv, vec4 color){
 	const float r = color.r;
 	const float g = color.g;
 	const float b = color.b;
 	const float a = color.a;
-	if (index + 6*VERTEX_SIZE >= capacity)
+	if (index + 6*VERTEX_SIZE >= capacity) {
-		render();
+		flush();
+	}
 
 	vertex(pos.x - right.x * w - up.x * h,
 			pos.y - right.y * w - up.y * h,
 			pos.z - right.z * w - up.z * h,
-			0, 0,
+			uv.u1, uv.v1,
 			r,g,b,a);
 
 	vertex(pos.x + right.x * w + up.x * h,
 			pos.y + right.y * w + up.y * h,
 			pos.z + right.z * w + up.z * h,
-			1, 1,
+			uv.u2, uv.v2,
 			r,g,b,a);
 
 	vertex(pos.x - right.x * w - up.x * h,
 			pos.y + right.y * w + up.y * h,
 			pos.z - right.z * w - up.z * h,
-			0, 1,
+			uv.u1, uv.v2,
 			r,g,b,a);
 
 	vertex(pos.x - right.x * w - up.x * h,
 			pos.y - right.y * w - up.y * h,
 			pos.z - right.z * w - up.z * h,
-			0, 0,
+			uv.u1, uv.v1,
 			r,g,b,a);
 
 	vertex(pos.x + right.x * w + up.x * h,
 			pos.y - right.y * w - up.y * h,
 			pos.z + right.z * w + up.z * h,
-			1, 0,
+			uv.u2, uv.v1,
 			r,g,b,a);
 
 	vertex(pos.x + right.x * w + up.x * h,
 			pos.y + right.y * w + up.y * h,
 			pos.z + right.z * w + up.z * h,
-			1, 1,
+			uv.u2, uv.v2,
 			r,g,b,a);
 }
 
@@ -163,16 +163,22 @@ inline vec4 do_tint(float value) {
 	return vec4(value, value, value, 1.0f);
 }
 
-void Batch3D::blockCube(const vec3& size, const UVRegion(&texfaces)[6], ubyte group) {
+void Batch3D::xSprite(float w, float h, const UVRegion& uv, const vec4 tint, bool shading) {
-	face(vec3(0.0f, 0.0f, 0.0f), size.x, size.y, vec3(1, 0, 0), vec3(0, 1, 0), texfaces[5], do_tint(1.0));
+	face(vec3(-w *0.25f, 0.0f, 0.0f - w *0.25f), w, h, vec3(1, 0, 0), vec3(0, 1, 0), uv, (shading ? do_tint(1.0f)*tint : tint));
-	face(vec3(size.x, 0.0f, -size.z), size.x, size.y, vec3(-1, 0, 0), vec3(0, 1, 0), texfaces[4], vec4(1.0f));
+	face(vec3(w * 0.25f, 0.0f, w * 0.5f - w *0.25f), w, h, vec3(0, 0, -1), vec3(0, 1, 0), uv, (shading ? do_tint(0.9f)*tint : tint));
-	face(vec3(0.0f, size.y, 0.0f), size.x, size.z, vec3(1, 0, 0), vec3(0, 0, -1), texfaces[3], vec4(1.0f));
-	face(vec3(0.0f, 0.0f, -size.z), size.x, size.z, vec3(1, 0, 0), vec3(0, 0, 1), texfaces[2], vec4(1.0f));
-	face(vec3(0.0f, 0.0f, -size.z), size.z, size.y, vec3(0, 0, 1), vec3(0, 1, 0), texfaces[0], vec4(1.0f));
-	face(vec3(size.x, 0.0f, 0.0f), size.z, size.y, vec3(0, 0, -1), vec3(0, 1, 0), texfaces[1], vec4(1.0f));
 }
 
-void Batch3D::render() {
+void Batch3D::blockCube(const vec3 size, const UVRegion(&texfaces)[6], const vec4 tint, bool shading) {
+	vec3 coord = (1.0f - size) * -0.45f;
+	face(coord+vec3(0.0f, 0.0f, 0.0f), size.x, size.y, vec3(1, 0, 0), vec3(0, 1, 0), texfaces[5], (shading ? do_tint(0.8)*tint : tint));
+	face(coord+vec3(size.x, 0.0f, -size.z), size.x, size.y, vec3(-1, 0, 0), vec3(0, 1, 0), texfaces[4], (shading ? do_tint(0.8f)*tint : tint));
+	face(coord+vec3(0.0f, size.y, 0.0f), size.x, size.z, vec3(1, 0, 0), vec3(0, 0, -1), texfaces[3], (shading ? do_tint(1.0f)*tint : tint));
+	face(coord+vec3(0.0f, 0.0f, -size.z), size.x, size.z, vec3(1, 0, 0), vec3(0, 0, 1), texfaces[2], (shading ? do_tint(0.7f)*tint : tint));
+	face(coord+vec3(0.0f, 0.0f, -size.z), size.z, size.y, vec3(0, 0, 1), vec3(0, 1, 0), texfaces[0], (shading ? do_tint(0.9f)*tint : tint));
+	face(coord+vec3(size.x, 0.0f, 0.0f), size.z, size.y, vec3(0, 0, -1), vec3(0, 1, 0), texfaces[1], (shading ? do_tint(0.9f)*tint : tint));
+}
+
+void Batch3D::flush() {
 	mesh->reload(buffer, index / VERTEX_SIZE);
 	mesh->draw();
 	index = 0;

src/graphics/Batch3D.h

@@ -13,7 +13,6 @@ class Batch3D {
 	float* buffer;
 	size_t capacity;
 	size_t offset;
-	glm::vec4 color;
 	Mesh* mesh;
 	size_t index;
 
@@ -41,9 +40,10 @@ public:
 
 	void begin();
 	void texture(Texture* texture);
-	void sprite(glm::vec3 pos, glm::vec3 up, glm::vec3 right, float w, float h);
+	void sprite(glm::vec3 pos, glm::vec3 up, glm::vec3 right, float w, float h, const UVRegion& uv, glm::vec4 tint);
-	void blockCube(const glm::vec3& size, const UVRegion(&texfaces)[6], ubyte group);
+	void xSprite(float w, float h, const UVRegion& uv, const glm::vec4 tint, bool shading=true);
-	void render();
+	void blockCube(const glm::vec3 size, const UVRegion(&texfaces)[6], const glm::vec4 tint, bool shading=true);
+	void flush();
 };
 
 #endif /* GRAPHICS_BATCH3D_H_ */