Merge pull request #44 from zao/feat/render-evolve

Evolve renderer backend and API surface

Author: Wires77

.gitmodules

@@ -7,3 +7,6 @@
 [submodule "dep/imgui"]
 	path = dep/imgui
 	url = https://github.com/ocornut/imgui.git
+[submodule "dep/glm"]
+	path = dep/glm
+	url = https://github.com/g-truc/glm.git

CMakeLists.txt

@@ -18,13 +18,15 @@ include(${PROJECT_SOURCE_DIR}/vcpkg/scripts/buildsystems/vcpkg.cmake)
 
 set(CMAKE_INSTALL_SYSTEM_RUNTIME_DESTINATION ".")
 include(InstallRequiredSystemLibraries)
+add_subdirectory(dep/glm)
 
 set(SIMPLEGRAPHIC_SOURCES
     "config.h"
     "dep/stb/stb_image.h"
     "dep/stb/stb_image_resize.h"
     "dep/stb/stb_image_write.h"
     "engine/common/common.cpp"
+    "engine/common.h"
     "engine/common/console.cpp"
     "engine/common/console.h"
     "engine/common/keylist.h"
@@ -137,6 +139,7 @@ target_compile_definitions(imgui PUBLIC
 target_include_directories(imgui PUBLIC
     dep/imgui
     dep/imgui/backends
+    dep/imgui/misc/cpp
 )
 
 target_link_libraries(imgui PUBLIC
@@ -181,6 +184,7 @@ target_link_libraries(SimpleGraphic
     unofficial::angle::libGLESv2
     fmt::fmt
     glfw
+    glm::glm
     imgui
     LuaJIT::LuaJIT
     re2::re2

dep/glm

@@ -50,7 +50,7 @@ image_c::~image_c()
 
 void image_c::CopyRaw(int inType, dword inWidth, dword inHeight, const byte* inDat)
 {
-	if (dat) delete dat;
+	if (dat) delete[] dat;
 	comp = inType & 0xF;
 	type = inType;
 	width = inWidth;
@@ -61,7 +61,7 @@ void image_c::CopyRaw(int inType, dword inWidth, dword inHeight, const byte* inD
 
 void image_c::Free()
 {
-	delete dat;
+	delete[] dat;
 	dat = NULL;
 }
 
@@ -188,7 +188,7 @@ bool targa_c::Load(const char* fileName)
 				int rlen = ((rlehdr & 0x7F) + 1) * comp; 
 				if (x + rlen > rowSize) {
 					con->Warning("TGA '%s': invalid RLE coding (overlong row)", fileName);
-					delete dat;
+					delete[] dat;
 					return true;
 				}
 				if (rlehdr & 0x80) {
@@ -225,7 +225,22 @@ bool targa_c::Load(const char* fileName)
 
 bool targa_c::Save(const char* fileName)
 {
-	return true;
+	if (type != IMGTYPE_RGB && type != IMGTYPE_RGBA) {
+		return true;
+	}
+
+	// Open file
+	fileOutputStream_c out;
+	if (out.FileOpen(fileName, true)) {
+		return true;
+	}
+
+	auto rc = stbi_write_tga_to_func([](void* ctx, void* data, int size) {
+		auto out = (fileOutputStream_c*)ctx;
+		out->Write(data, size);
+		}, &out, width, height, comp, dat);
+
+	return !rc;
 }
 
 bool targa_c::ImageInfo(const char* fileName, imageInfo_s* info)
@@ -277,14 +292,14 @@ bool jpeg_c::Load(const char* fileName)
 		return true;
 	}
 	int x, y, in_comp;
-	if (!stbi_info_from_memory(fileData.data(), fileData.size(), &x, &y, &in_comp)) {
+	if (!stbi_info_from_memory(fileData.data(), (int)fileData.size(), &x, &y, &in_comp)) {
 		return true;
 	}
 	if (in_comp != 1 && in_comp != 3) {
 		con->Warning("JPEG '%s': unsupported component count '%d'", fileName, comp);
 		return true;
 	}
-	stbi_uc* data = stbi_load_from_memory(fileData.data(), fileData.size(), &x, &y, &in_comp, in_comp);
+	stbi_uc* data = stbi_load_from_memory(fileData.data(), (int)fileData.size(), &x, &y, &in_comp, in_comp);
 	if (!data) {
 		stbi_image_free(data);
 		return true;
@@ -335,7 +350,7 @@ bool jpeg_c::ImageInfo(const char* fileName, imageInfo_s* info)
 		return true;
 	}
 	int x, y, comp;
-	if (stbi_info_from_memory(fileData.data(), fileData.size(), &x, &y, &comp)) {
+	if (stbi_info_from_memory(fileData.data(), (int)fileData.size(), &x, &y, &comp)) {
 		return true;
 	}
 
@@ -366,14 +381,14 @@ bool png_c::Load(const char* fileName)
 		return true;
 	}
 	int x, y, in_comp;
-	if (!stbi_info_from_memory(fileData.data(), fileData.size(), &x, &y, &in_comp)) {
+	if (!stbi_info_from_memory(fileData.data(), (int)fileData.size(), &x, &y, &in_comp)) {
 		return true;
 	}
 	width = x;
 	height = y;
 	comp = (in_comp == 1 || in_comp == 3) ? 3 : 4;
 	type = comp == 3 ? IMGTYPE_RGB : IMGTYPE_RGBA;
-	stbi_uc* data = stbi_load_from_memory(fileData.data(), fileData.size(), &x, &y, &in_comp, comp);
+	stbi_uc* data = stbi_load_from_memory(fileData.data(), (int)fileData.size(), &x, &y, &in_comp, comp);
 	if (!data) {
 		stbi_image_free(data);
 		return true;
@@ -420,7 +435,7 @@ bool png_c::ImageInfo(const char* fileName, imageInfo_s* info)
 		return true;
 	}
 	int x, y, comp;
-	if (stbi_info_from_memory(fileData.data(), fileData.size(), &x, &y, &comp)) {
+	if (stbi_info_from_memory(fileData.data(), (int)fileData.size(), &x, &y, &comp)) {
 		return true;
 	}
 
@@ -449,7 +464,7 @@ bool gif_c::Load(const char* fileName)
 			return true;
 		}
 		int x, y, in_comp;
-		stbi_uc* data = stbi_load_from_memory(fileData.data(), fileData.size(), &x, &y, &in_comp, 4);
+		stbi_uc* data = stbi_load_from_memory(fileData.data(), (int)fileData.size(), &x, &y, &in_comp, 4);
 		if (!data || in_comp != 4) {
 			stbi_image_free(data);
 			return true;

engine/core/core_image.cpp

@@ -46,7 +46,6 @@ class core_video_c: public core_IVideo, public conCmdHandler_c {
 	sys_IMain* sys;
 
 	conVar_c* vid_mode;
-	conVar_c* vid_display;
 	conVar_c* vid_fullscreen;
 	conVar_c* vid_resizable;
 	conVar_c* vid_last;
@@ -69,7 +68,6 @@ core_video_c::core_video_c(sys_IMain* sysHnd)
 	: conCmdHandler_c(sysHnd->con), sys(sysHnd)
 {
 	vid_mode		= sys->con->Cvar_Add("vid_mode", CV_ARCHIVE|CV_CLAMP, CFG_VID_DEFMODE, -1, VID_NUMMODES-1);
-	vid_display		= sys->con->Cvar_Add("vid_display", CV_ARCHIVE|CV_CLAMP, CFG_VID_DEFDISPLAY, -1, 15);
 	vid_fullscreen	= sys->con->Cvar_Add("vid_fullscreen", CV_ARCHIVE, CFG_VID_DEFFULLSCREEN);
 	vid_resizable	= sys->con->Cvar_Add("vid_resizable", CV_ARCHIVE|CV_CLAMP, CFG_VID_DEFRESIZABLE, 0, 3);
 	vid_last		= sys->con->Cvar_Add("vid_last", CV_ARCHIVE, "");
@@ -100,15 +98,13 @@ void core_video_c::Apply(bool shown)
 			}
 		}
 	}
-	set.display = vid_display->intVal;
 	if (vid_mode->intVal >= 0) {
 		set.mode[0] = (std::max)(vid_modeList[vid_mode->intVal][0], CFG_VID_MINWIDTH);
 		set.mode[1] = (std::max)(vid_modeList[vid_mode->intVal][1], CFG_VID_MINHEIGHT);
 	} else {
 		set.mode[0] = 0;
 		set.mode[1] = 0;
 	}
-	set.depth = 0;
 	set.minSize[0] = CFG_VID_MINWIDTH;
 	set.minSize[1] = CFG_VID_MINHEIGHT;
 	sys->video->Apply(&set);

engine/core/core_video.cpp

@@ -8,6 +8,11 @@
 // Classes
 // =======
 
+// Renderer feature flags
+enum r_featureFlag_e {
+	F_DPI_AWARE = 0x1, // App understands DPI, do not virtualize screen size/positions
+};
+
 // Font alignment
 enum r_fontAlign_e {
 	F_LEFT,
@@ -59,7 +64,7 @@ class r_IRenderer {
 	static r_IRenderer* GetHandle(sys_IMain* sysHnd);
 	static void FreeHandle(r_IRenderer* hnd);
 
-	virtual void	Init() = 0;
+	virtual void	Init(r_featureFlag_e features) = 0;
 	virtual void	Shutdown() = 0;
 
 	virtual void	BeginFrame() = 0;

engine/render.h

@@ -17,10 +17,10 @@
 
 // Glyph parameters
 struct f_glyph_s {
-	double	tcLeft = 0.0;
-	double	tcRight = 0.0;
-	double	tcTop = 0.0;
-	double	tcBottom = 0.0;
+	float	tcLeft = 0.0;
+	float	tcRight = 0.0;
+	float	tcTop = 0.0;
+	float	tcBottom = 0.0;
 	int		width = 0;
 	int		spLeft = 0;
 	int		spRight = 0;
@@ -32,7 +32,7 @@ struct f_fontHeight_s {
 	int		height;
 	int		numGlyph;
 	f_glyph_s glyphs[128];
-	f_glyph_s defGlyph{0.0, 0.0, 0.0, 0.0, 0, 0, 0};
+	f_glyph_s defGlyph{0.0f, 0.0f, 0.0f, 0.0f, 0, 0, 0};
 
 	f_glyph_s const& Glyph(char ch) const {
 		if ((unsigned char)ch >= numGlyph) {
@@ -84,10 +84,10 @@ r_font_c::r_font_c(r_renderer_c* renderer, const char* fontName)
 			// Add glyph
 			if (fh->numGlyph >= 128) continue;
 			f_glyph_s* glyph = &fh->glyphs[fh->numGlyph++];
-			glyph->tcLeft = (double)x / fh->tex->fileWidth;
-			glyph->tcRight = (double)(x + w) / fh->tex->fileWidth;
-			glyph->tcTop = (double)y / fh->tex->fileHeight;
-			glyph->tcBottom = (double)(y + fh->height) / fh->tex->fileHeight;
+			glyph->tcLeft = (float)x / fh->tex->fileWidth;
+			glyph->tcRight = (float)(x + w) / fh->tex->fileWidth;
+			glyph->tcTop = (float)y / fh->tex->fileHeight;
+			glyph->tcBottom = (float)(y + fh->height) / fh->tex->fileHeight;
 			glyph->width = w;
 			glyph->spLeft = sl;
 			glyph->spRight = sr;
@@ -240,14 +240,14 @@ void r_font_c::DrawTextLine(scp_t pos, int align, int height, col4_t col, const
 
 	// Find best height to use
 	f_fontHeight_s *fh = fontHeights[height > maxHeight? (numFontHeight - 1) : fontHeightMap[height]];
-	double scale = (double)height / fh->height;
+	float scale = (float)height / fh->height;
 
 	// Calculate the string position
-	double x = pos[X];
-	double y = pos[Y];
+	float x = pos[X];
+	float y = pos[Y];
 	if (align != F_LEFT) {
 		// Calculate the real width of the string
-		double width = StringWidthInternal(fh, str) * scale;
+		float width = StringWidthInternal(fh, str) * scale;
 		switch (align) {
 		case F_CENTRE:
 			x = floor((renderer->VirtualScreenWidth() - width) / 2.0f + pos[X]);
@@ -297,7 +297,7 @@ void r_font_c::DrawTextLine(scp_t pos, int align, int height, col4_t col, const
 		auto& glyph = fh->Glyph(*str++);
 		x+= glyph.spLeft * scale;
 		if (glyph.width) {
-			double w = glyph.width * scale;
+			float w = glyph.width * scale;
 			if (x + w >= 0 && x < renderer->VirtualScreenWidth()) {
 				renderer->curLayer->Quad(
 					glyph.tcLeft, glyph.tcTop, x, y,