+init

1 files changed, 230 insertions, 0 deletions

diff --git a/Client/Source/Graphics/Texture.cpp b/Client/Source/Graphics/Texture.cpp
new file mode 100644
index 0000000..79dd5ea
--- /dev/null
+++ b/Client/Source/Graphics/Texture.cpp
@@ -0,0 +1,230 @@
+#include "../Math/Math.h"
+
+#include "ImageData.h"
+#include "Texture.h"
+
+Texture::Texture(TextureSetting setting, ImageData* imgData)
+{
+	Init(setting, imgData);
+	// force not keep imgData
+	m_KeepPixelData = false;
+}
+
+void Texture::Init(TextureSetting setting, ImageData* imgData)
+{
+	m_Width = imgData->width;
+	m_Height = imgData->height;
+	m_Type = setting.type;
+	m_Format = setting.format;
+	m_WrapMode = setting.wrapMode;
+	m_FilterMode = setting.filterMode;
+	m_KeepPixelData = setting.keepImageData;
+
+	glGenTextures(1, &m_GPUID);
+	glBindTexture(GL_TEXTURE_2D, m_GPUID);
+
+	CheckGLError(
+		glDeleteTextures(1, &m_GPUID);
+		glBindTexture(GL_TEXTURE_2D, 0);
+		throw TextureException(error);
+	);
+
+	switch (m_WrapMode) {
+		case ETextureWrapMode::Clamp:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+			break;
+		case ETextureWrapMode::Repeat:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+			break;
+		case ETextureWrapMode::Mirror:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
+			break;
+		default:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+			break;
+	}
+
+	CheckGLError(
+		glDeleteTextures(1, &m_GPUID);
+		glBindTexture(GL_TEXTURE_2D, 0);
+		throw TextureException(error);
+	);
+
+	switch (m_FilterMode) {
+		case ETextureFilterMode::Linear:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+			break;
+		case ETextureFilterMode::Nearest:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+			break;
+		default:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+			break;
+	}
+
+    GLint srcFormat = GL_RGB;
+    switch (imgData->format)
+    {
+        case PixelFormat_R: srcFormat = GL_RED; break;
+        case PixelFormat_RGB: srcFormat = GL_RGB; break;
+        case PixelFormat_RGBA: srcFormat = GL_RGBA; break;
+        default: Assert(false); 
+    }
+    GLint srcType = GL_UNSIGNED_BYTE;
+    switch (imgData->type)
+    {
+        case PixelType_UNSIGNED_BYTE: srcType = GL_UNSIGNED_BYTE; break;
+        default: Assert(false);
+    }
+
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, imgData->width, imgData->height, 0, srcFormat, srcType, imgData->pixels);
+
+	CheckGLError(
+		glDeleteTextures(1, &m_GPUID);
+		glBindTexture(GL_TEXTURE_2D, 0);
+		throw TextureException(error);
+	);
+}
+
+Texture::Texture(TextureSetting setting, int w, int h)
+{
+	m_KeepPixelData = false;
+
+	m_Width = w;
+	m_Height = h;
+	m_Type = setting.type;
+	m_Format = setting.format;
+	m_WrapMode = setting.wrapMode;
+	m_FilterMode = setting.filterMode;
+	m_KeepPixelData = setting.keepImageData;
+
+    WipeGLError();
+
+	glGenTextures(1, &m_GPUID);
+	glBindTexture(GL_TEXTURE_2D, m_GPUID);
+
+	CheckGLError(
+		glDeleteTextures(1, &m_GPUID);
+		glBindTexture(GL_TEXTURE_2D, 0);
+		throw TextureException(error);
+	);
+
+	switch (m_WrapMode) {
+	case ETextureWrapMode::Clamp:
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+		break;
+	case ETextureWrapMode::Repeat:
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+		break;
+	case ETextureWrapMode::Mirror:
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
+		break;
+	default:
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+		break;
+	}
+
+	CheckGLError(
+		glDeleteTextures(1, &m_GPUID);
+		glBindTexture(GL_TEXTURE_2D, 0);
+		throw TextureException(error);
+	);
+
+	switch (m_FilterMode) {
+		case ETextureFilterMode::Linear:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+			break;
+		case ETextureFilterMode::Nearest:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+			break;
+		default:
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+			glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+			break;
+	}
+	GLenum internalFormat = GL_RGB;
+	if (m_Format == ETextureFormat::R8)
+	{
+		internalFormat = GL_RED;
+		glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+	}
+
+	glTexImage2D(GL_TEXTURE_2D, 0, internalFormat, w, h, 0, GL_RED, GL_UNSIGNED_BYTE, NULL);
+
+	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+
+	CheckGLError(
+		glDeleteTextures(1, &m_GPUID);
+		glBindTexture(GL_TEXTURE_2D, 0);
+		throw TextureException(error);
+	);
+
+    glBindTexture(GL_TEXTURE_2D, 0);
+}
+
+Texture::~Texture()
+{
+    glDeleteTextures(1, &m_GPUID);
+}
+
+void Texture::UpdateSubImage(Rect rect, int format, int type, const void* data)
+{
+	glBindTexture(GL_TEXTURE_2D, m_GPUID);
+
+	CheckGLError(
+		glBindTexture(GL_TEXTURE_2D, 0);
+		throw TextureException(error);
+	);
+
+	int alignment = 4;
+	if (m_Format == ETextureFormat::R8)
+	{
+		alignment = 1;
+	}
+
+	GLenum fmt = GL_RED; 
+	switch (format)
+	{
+		case EPixelFormat::PixelFormat_BGR: fmt = GL_BGR; break;
+		case EPixelFormat::PixelFormat_BGRA:fmt = GL_BGRA; break;
+		case EPixelFormat::PixelFormat_R:  fmt = GL_RED; break;
+		case EPixelFormat::PixelFormat_RG: fmt = GL_RG; break;
+		case EPixelFormat::PixelFormat_RGB: fmt = GL_RGB; break;
+		case EPixelFormat::PixelFormat_RGBA: fmt = GL_RGBA; break;
+	}
+	GLenum t = GL_UNSIGNED_BYTE;
+	switch (type) 
+	{
+		case EPixelElementType::PixelType_UNSIGNED_BYTE: t = GL_UNSIGNED_BYTE; break;
+		case EPixelElementType::PixelType_UNSIGNED_INT: t = GL_UNSIGNED_INT; break;
+		case EPixelElementType::PixelType_BYTE: t = GL_BYTE; break;
+		case EPixelElementType::PixelType_INT: t = GL_INT; break;
+		case EPixelElementType::PixelType_FLOAT: t = GL_FLOAT; break;
+	}
+
+	glPixelStorei(GL_UNPACK_ALIGNMENT, alignment);
+
+	glTexSubImage2D(GL_TEXTURE_2D, 0, rect.x, rect.y, rect.width, rect.height, fmt, t, data);
+
+	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+
+	CheckGLError(
+		glBindTexture(GL_TEXTURE_2D, 0);
+		throw TextureException(error);
+	);
+
+	glBindTexture(GL_TEXTURE_2D, 0);
+}
\ No newline at end of file