init commit

2025-06-11 22:45:11 +08:00
commit 71307f3e53
115 changed files with 13922 additions and 0 deletions
@@ -0,0 +1,185 @@
+#include "adapter_texture.h"
+#include <SDL3/SDL_opengl.h>
+
+#include "device/dvc_render_target.h"
+#include "math/dvc_math_util.h"
+
+AdapterTexture::AdapterTexture()
+	: m_canvasTexture(0)
+	, m_canvasWidth(0)
+	, m_canvasHeight(0)
+	, m_textureWidth(0)
+	, m_textureHeight(0)
+	, m_textureBuff(nullptr)
+{
+}
+
+AdapterTexture::~AdapterTexture()
+{
+	if (m_textureBuff != nullptr)
+	{
+		delete[] m_textureBuff;
+		m_textureBuff = nullptr;
+	}
+}
+
+void AdapterTexture::init(int32_t canvasWidth, int32_t canvasHeight)
+{
+	// load and create a texture 
+	glGenTextures(1, &m_canvasTexture);
+	glBindTexture(GL_TEXTURE_2D, m_canvasTexture);
+
+	// set texture filtering parameters
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+	//create texture buff
+	resize(canvasWidth, canvasHeight);
+}
+
+void AdapterTexture::resize(int32_t canvasWidth, int32_t canvasHeight)
+{
+	m_canvasWidth = canvasWidth;
+	m_canvasHeight = canvasHeight;
+
+	//upbound to 4
+	int32_t textureWidth = canvasWidth;
+	if ((textureWidth & 3) != 0) {
+		textureWidth = (textureWidth & (~3)) + 4;
+	}
+	int32_t textureHeight = canvasHeight;
+	if ((textureHeight & 3) != 0) {
+		textureHeight = (textureHeight & (~3)) + 4;
+	}
+
+	//same texture size?
+	if (m_textureWidth == textureWidth && m_textureHeight == textureHeight)
+	{
+		return;
+	}
+	m_textureWidth = textureWidth;
+	m_textureHeight = textureHeight;
+
+	if (m_textureBuff != nullptr)
+	{
+		delete[] m_textureBuff;
+	}
+
+	//alloc new texture memory buf
+	m_textureBuff = new uint8_t[textureWidth * textureHeight * 3];
+	memset(m_textureBuff, 0, textureWidth * textureHeight * 3);
+}
+
+void AdapterTexture::updateTexture(void)
+{
+	if (m_textureBuff == nullptr || m_textureWidth == 0 || m_textureHeight == 0)
+	{
+		//not ready?
+		return;
+	}
+
+	//fill as blank texture
+	const int32_t BLOCK_SIZE = 10;
+	for (int32_t i = 0; i < m_canvasHeight; i++)
+	{
+		uint8_t* p = m_textureBuff + i * m_textureWidth * 3;
+		for (int32_t j = 0; j < m_canvasWidth; j++)
+		{
+			int ii = i / BLOCK_SIZE;
+			int jj = j / BLOCK_SIZE;
+			bool i_odd = (ii & 1) != 0;
+			bool j_odd = (jj & 1) != 0;
+
+			if (i_odd != j_odd)
+			{
+				*p++ = (uint8_t)(1 * 255);
+				*p++ = (uint8_t)(1 * 255);
+				*p++ = (uint8_t)(1 * 255);
+			}
+			else
+			{
+				*p++ = (uint8_t)(1 * 220);
+				*p++ = (uint8_t)(1 * 220);
+				*p++ = (uint8_t)(1 * 220);
+			}
+		}
+	}
+
+	glBindTexture(GL_TEXTURE_2D, m_canvasTexture);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_textureWidth, m_textureHeight, 0, GL_RGB, GL_UNSIGNED_BYTE, m_textureBuff);
+}
+
+void AdapterTexture::updateTexture(int32_t start_x, int32_t start_y, const davinci::PixelBuffer<davinci::fVector4>& buffer)
+{
+	int32_t width = buffer.getWidth();
+	int32_t height = buffer.getHeight();
+
+	for (int32_t i = 0; i < height; i++)
+	{
+		int32_t y = start_y + i;
+		if (y >= m_canvasHeight) break;
+
+		uint8_t* ps = m_textureBuff + y * m_textureWidth * 3;
+		for (int32_t j = 0; j < width; j++)
+		{
+			int32_t x = start_x + j;
+			if (x >= m_canvasWidth) break;
+
+			uint8_t* p = ps + 3 * x;
+
+			const davinci::fVector4 color = buffer.getPixel(j, i);
+
+			*p++ = (uint8_t)(255 * color.x);
+			*p++ = (uint8_t)(255 * color.y);
+			*p++ = (uint8_t)(255 * color.z);
+		}
+		
+	}
+	glBindTexture(GL_TEXTURE_2D, m_canvasTexture);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_textureWidth, m_textureHeight, 0, GL_RGB, GL_UNSIGNED_BYTE, m_textureBuff);
+}
+
+void AdapterTexture::updateTexture(int32_t start_x, int32_t start_y, const davinci::PixelBuffer<float32_t>& buffer)
+{
+	int32_t width = buffer.getWidth();
+	int32_t height = buffer.getHeight();
+
+	for (int32_t i = 0; i < height; i++)
+	{
+		int32_t y = start_y + i;
+		if (y >= m_canvasHeight) break;
+
+		uint8_t* ps = m_textureBuff + y * m_textureWidth * 3;
+		for (int32_t j = 0; j < width; j++)
+		{
+			int32_t x = start_x + j;
+			if (x >= m_canvasWidth) break;
+
+			uint8_t* p = ps + 3 * x;
+
+			const float32_t color = davinci::MathUtil::saturate(buffer.getPixel(j, i));
+
+			*p++ = (uint8_t)(255 * color);
+			*p++ = (uint8_t)(255 * color);
+			*p++ = (uint8_t)(255 * color);
+		}
+
+	}
+	glBindTexture(GL_TEXTURE_2D, m_canvasTexture);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, m_textureWidth, m_textureHeight, 0, GL_RGB, GL_UNSIGNED_BYTE, m_textureBuff);
+}
+
+void AdapterTexture::draw(void)
+{
+	glBindTexture(GL_TEXTURE_2D, getTextureID());
+	glBegin(GL_QUADS);
+
+	float top_pos = (float)m_textureHeight*2.0f / (float)m_canvasHeight-1.0f;
+	float right_pos = (float)m_textureWidth*2.0f / (float)m_canvasWidth-1.0f;
+
+	glTexCoord2f(0.0, 0.0); glVertex3f(-1.0f,		-1.0f,		0);
+	glTexCoord2f(1.0, 0.0); glVertex3f(right_pos,	-1.0f,		0);
+	glTexCoord2f(1.0, 1.0); glVertex3f(right_pos,	top_pos,	0);
+	glTexCoord2f(0.0, 1.0); glVertex3f(-1.0f,		top_pos,	0);
+	glEnd();
+}